Extrusion die for CPVC pipe

Abstract

This utility model discloses a CPVC pipe extrusion mold, including a discharge pipe with an extrusion head fixedly connected to its outer side. A temperature detection mechanism is provided at the top of the discharge pipe, comprising a rotating plate with a connecting plate fixedly connected to its top. A motor is fixedly connected to the outer side of the connecting plate, and a lead screw is fixedly connected to the output end of the motor. In this CPVC pipe extrusion mold, the temperature detection mechanism drives the lead screw to rotate via the motor, causing a moving block to move along the lead screw, which in turn moves the connecting rod and the detection cover above the discharge pipe, thereby detecting the temperature at different positions on the discharge pipe. The sensor transmits the detected temperature signal through a wire. When the temperature is abnormal, an alarm light illuminates, promptly reminding the operator to make adjustments to avoid affecting the extrusion quality of the CPVC pipe due to unsuitable temperature, effectively preventing defects such as deformation and cracking of the pipe due to temperature issues, and ensuring the product qualification rate.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to CPVC pipe extrusion molds. Background Technology

[0002] In modern industry and construction, chlorinated polyvinyl chloride (CPVC) pipes are widely used in power cable protection, chemical fluid transportation, and building water supply and drainage due to their excellent chemical corrosion resistance, flame retardancy, and high-temperature stability. With the continued growth in market demand for CPVC pipes and the increasing demands of industry standards for pipe wall thickness uniformity, surface finish, and dimensional accuracy, the extrusion die, as the core equipment for CPVC pipe forming, directly determines product quality and production efficiency through its technological level.

[0003] Based on the authorized patent "CN202180587U" for high-speed CPVC pipe extrusion molds, the invention includes a flange and a die head connector mounted on the extruder head. A die is installed inside the opening of the die head connector, and a die pressure plate is installed outside the die. The die pressure plate is fixed to the die head connector with screws. A mandrel is installed inside the die, forming an extrusion cavity between the mandrel and the die. The invention is characterized by a flow divider plate installed in the die head connector, with flow divider holes formed in the flow divider plate. A flow divider cone is connected inside the flow divider plate, and the mandrel is connected to the flow divider cone via studs. A flow divider cavity is formed between the flow divider cone and the die head connector. The flow divider cavity, flow divider holes, and extrusion cavity are interconnected. The extrusion cavity is funnel-shaped, gradually narrowing from a large opening. This design's funnel-shaped extrusion cavity, with its gradually narrowing cavity, creates high-pressure extrusion, resulting in faster pipe extrusion speeds and improved production efficiency.

[0004] The above-mentioned technical solutions have several shortcomings in temperature monitoring and control technology during traditional CPVC pipe extrusion production. On the one hand, most companies use manual timed measurement of the discharge pipe temperature. This method is not only inefficient but also highly susceptible to human factors, making it difficult to guarantee the accuracy of the measurement results. Furthermore, it cannot achieve real-time continuous temperature monitoring, easily leading to blind spots and failing to detect abnormal temperature changes in a timely manner. On the other hand, some companies use fixed temperature sensors that can only detect the temperature at specific locations in the discharge pipe, failing to comprehensively reflect the temperature distribution throughout the entire discharge pipe. Once a local temperature anomaly occurs in the discharge pipe, it cannot be detected in time, resulting in a large number of defective products, causing waste of raw materials and increased production costs. In addition, traditional temperature monitoring systems lack intelligent alarm functions. When the temperature exceeds the appropriate range, operators find it difficult to detect it in time and take measures to adjust, seriously affecting the production quality and efficiency of CPVC pipes.

[0005] Therefore, this utility model provides a CPVC pipe extrusion die. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model provides a CPVC pipe extrusion die to solve the above problems.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a CPVC pipe extrusion mold, including a discharge pipe, an extrusion head fixedly connected to the outside of the discharge pipe, and a temperature detection mechanism provided at the top of the discharge pipe;

[0008] The temperature detection mechanism includes a rotating plate, a connecting plate fixedly connected to the top of the rotating plate, a motor fixedly connected to the outer side of the connecting plate, a lead screw fixedly connected to the output end of the motor, a moving block threadedly connected to the outer side of the lead screw, a sliding groove opened inside the rotating plate, a connecting rod fixedly connected to the bottom of the moving block, a detection cover fixedly connected to the bottom of the connecting rod, a sensor fixedly connected to the outer side of the rotating plate, a wire fixedly connected to the outer side of the sensor, and an alarm light fixedly connected to the outer side of the sensor.

[0009] Preferably, the discharge pipe is provided with an adjustment mechanism, which includes a movable pipe, a rotating rod is movably connected inside the movable pipe, a rotating ball is fixedly connected to the outside of the rotating rod, a through hole is opened inside the rotating ball, an extension plate is fixedly connected to the outside of the rotating rod, a threaded pipe is fixedly connected to the outside of the extension plate, a screw is threadedly connected inside the threaded pipe, and a first positioning hole and a second positioning hole are opened in the side wall of the discharge pipe.

[0010] Preferably, the operating plate is fixedly connected to the top of the discharge pipe, and the connecting plates are symmetrically distributed on the top of the operating plate.

[0011] Preferably, the lead screw is rotatably connected between two connecting plates, and the moving block is slidably connected to the top of the operating plate.

[0012] Preferably, the connecting rod is slidably connected inside the chute, and the detection cover is movably connected above the discharge pipe via the connecting rod.

[0013] Preferably, the end of the wire furthest from the sensor is fixedly connected to the outside of the detection cover, and the sensor and the alarm light are electrically connected.

[0014] Preferably, the movable tube is fixedly connected to the outside of the discharge tube, and the rotating ball is rotatably connected to the inside of the discharge tube via a rotating rod, with the outside of the rotating ball tightly attached to the inner wall of the discharge tube.

[0015] Preferably, the screw is adapted to the first positioning hole and the second positioning hole, and the first positioning hole and the second positioning hole form a 90-degree angle.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] (1) The temperature detection mechanism of the CPVC pipe extrusion die is driven by a motor to rotate the lead screw, which causes the moving block to move along the lead screw, thereby driving the connecting rod and the detection cover to move above the discharge pipe, so as to detect the temperature at different positions of the discharge pipe. The sensor transmits the detected temperature signal through the wire. When the temperature is abnormal, the alarm light will light up, which can remind the operator to make adjustments in time, so as to avoid the extrusion quality of CPVC pipe being affected by unsuitable temperature, effectively prevent the pipe from deforming, cracking and other defects due to temperature problems, and ensure the product qualification rate.

[0019] (2) In the adjustment mechanism of the CPVC pipe extrusion die, the rotating rod drives the rotating ball to rotate in the discharge pipe. The through hole on the rotating ball can change the shape and size of the discharge channel. With the extension plate, threaded pipe, screw and No. 1 positioning hole and No. 2 positioning hole, the extrusion shape and size of the pipe can be precisely adjusted according to production needs. For example, by fixing the screw in different positioning holes, the different cross-sectional shapes of the pipe can be adjusted, which improves the versatility and production flexibility of the die and meets the diverse product production needs. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the external structure of the temperature detection mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the outer structure of the adjustment mechanism of this utility model;

[0023] Figure 4 This is a utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0024] In the diagram: 1. Discharge pipe; 2. Extrusion head; 3. Temperature detection mechanism; 31. Rotating plate; 32. Connecting plate; 33. Motor; 34. Lead screw; 35. Moving block; 36. Slide groove; 37. Connecting rod; 38. Detection cover; 39. Sensor; 310. Wire; 311. Alarm light; 4. Adjustment mechanism; 41. Movable tube; 42. Rotating rod; 43. Ball bearing; 44. Through hole; 45. Extension plate; 46. Threaded tube; 47. Screw; 48. Positioning hole No. 1; 49. Positioning hole No. 2. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-4 CPVC pipe extrusion mold, including discharge pipe 1, extrusion head 2 fixedly connected to the outside of discharge pipe 1, and temperature detection mechanism 3 provided at the top of discharge pipe 1;

[0027] The temperature detection mechanism 3 includes a rotating plate 31, a connecting plate 32 fixedly connected to the top of the rotating plate 31, a motor 33 fixedly connected to the outside of the connecting plate 32, a lead screw 34 fixedly connected to the output end of the motor 33, a moving block 35 threadedly connected to the outside of the lead screw 34, a sliding groove 36 opened inside the rotating plate 31, a connecting rod 37 fixedly connected to the bottom of the moving block 35, a detection cover 38 fixedly connected to the bottom of the connecting rod 37, a sensor 39 fixedly connected to the outside of the rotating plate 31, a wire 310 fixedly connected to the outside of the sensor 39, and an alarm light 311 fixedly connected to the outside of the sensor 39.

[0028] Furthermore: the operating plate 31 is fixedly connected to the top of the discharge pipe 1, the connecting plates 32 are symmetrically distributed on the top of the operating plate 31, the lead screw 34 is rotatably connected between the two connecting plates 32, the moving block 35 is slidably connected to the top of the operating plate 31, the connecting rod 37 is slidably connected inside the slide groove 36, the detection cover 38 is movably connected to the top of the discharge pipe 1 through the connecting rod 37, the end of the wire 310 away from the sensor 39 is fixedly connected to the outside of the detection cover 38, and the sensor 39 is electrically connected to the alarm light 311.

[0029] It should be noted that in the temperature detection mechanism 3, the motor 33 drives the lead screw 34 to rotate, which drives the moving block 35 to slide along the operating plate 31. Through the connecting rod 37, the detection cover 38 reciprocates above the discharge pipe 1. Compared with the traditional fixed detection, it can achieve full coverage detection of the surface temperature of the discharge pipe 1, avoiding pipe quality problems caused by the failure to detect local temperature abnormalities.

[0030] Specifically, the temperature data collected by the detection cover 38 is transmitted to the sensor 39 via the wire 310. When the temperature exceeds the preset range, the sensor 39 immediately triggers the alarm light 311 to illuminate. This system achieves integrated intelligent linkage of temperature data acquisition, analysis, and alarm, with a short response time, effectively ensuring the temperature stability of the production process.

[0031] As a further improvement of this utility model, the discharge pipe 1 is provided with an adjustment mechanism 4. The adjustment mechanism 4 includes a movable pipe 41, a rotating rod 42 is movably connected inside the movable pipe 41, a rotating ball 43 is fixedly connected to the outside of the rotating rod 42, a through hole 44 is opened inside the rotating ball 43, an extension plate 45 is fixedly connected to the outside of the rotating rod 42, a threaded pipe 46 is fixedly connected to the outside of the extension plate 45, a screw 47 is threadedly connected inside the threaded pipe 46, and a first positioning hole 48 and a second positioning hole 49 are opened in the side wall of the discharge pipe 1.

[0032] Furthermore: the movable tube 41 is fixedly connected to the outside of the discharge tube 1, the rotating ball 43 is rotatably connected to the inside of the discharge tube 1 through the rotating rod 42, and the outside of the rotating ball 43 is tightly attached to the inner wall of the discharge tube 1. The screw 47 is adapted to the first positioning hole 48 and the second positioning hole 49, and the first positioning hole 48 and the second positioning hole 49 form a 90-degree angle.

[0033] It should be noted that the rotating rod 42 drives the rotating ball 43 to rotate inside the discharge pipe 1. Through the cooperation of the extension plate 45, the threaded pipe 46, and the screw 47 with the first positioning hole 48 and the second positioning hole 49, the rotating ball 43 can be fixed in two positions that are 90 degrees apart. This design allows the internal channel structure of the discharge pipe 1 to switch quickly between two different states, meeting the requirements of material flow path and discharge port shape during the production of pipes of different specifications.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] Working principle: In the CPVC pipe extrusion process, temperature is a key factor affecting pipe quality. The temperature detection mechanism 3, through a series of precisely matched components, realizes real-time monitoring and abnormal alarm of the temperature of the discharge pipe 4.

[0036] Once the mold starts working, the motor 33 starts, and the output end of the motor 33 drives the lead screw 34 to rotate between the two connecting plates 32. Since the lead screw 34 is threadedly connected to the moving block 35, the rotation of the lead screw 34 is converted into the linear sliding of the moving block 35 on the top of the operating plate 31. The connecting rod 37 fixed at the bottom of the moving block 35 then slides in the groove 36 inside the operating plate 31, thereby driving the detection cover 38 to move horizontally above the discharge pipe 1.

[0037] During its movement, the detection hood 38 detects the temperature at different locations on the discharge pipe 1 and transmits the temperature data to the sensor 39 via the wire 310. The sensor 39 analyzes and processes the received temperature data. When the detected temperature exceeds the preset normal range, the sensor 39 immediately triggers the alarm light 311 to illuminate via electrical connection, alerting the operator so that the temperature can be adjusted in time to ensure the temperature stability of the CPVC pipe extrusion process.

[0038] The adjustment mechanism 4 is mainly used to adjust the channel structure inside the discharge pipe 1 to meet the extrusion requirements of CPVC pipes of different specifications.

[0039] The movable tube 41 is fixed to the outside of the discharge tube 1. The rotating rod 42 drives the rotating ball 43 to rotate inside the discharge tube 1. The outer side of the rotating ball 43 is in close contact with the inner wall of the discharge tube 1, which can ensure the stability and sealing of the rotation process. The through hole 44 inside the rotating ball 43 is used for material to pass through. By rotating the rotating rod 42, the relative position of the through hole 44 and the internal channel of the discharge tube 1 can be adjusted, thereby changing the flow path of the material.

[0040] The extension plate 45, threaded tube 46, and screw 47 constitute the positioning and adjustment assembly. When it is necessary to adjust the position of the rotating ball 43, the screw 47 is turned to rotate and move within the threaded tube 46. Since the screw 47 is compatible with the first positioning hole 48 and the second positioning hole 49, and the two positioning holes are at a 90-degree angle, the screw 47 can be screwed into the first positioning hole 48 or the second positioning hole 49 respectively, fixing the rotating ball 43 at different angle positions, thereby achieving precise adjustment of the internal channel structure of the discharge pipe 1 to extrude CPVC pipes of different specifications.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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 CPVC pipe extrusion die, including an outlet pipe (1), characterized in that: An extrusion head (2) is fixedly connected to the outside of the discharge pipe (1), and a temperature detection mechanism (3) is provided at the top of the discharge pipe (1). The temperature detection mechanism (3) includes a rotating plate (31), a connecting plate (32) is fixedly connected to the top of the rotating plate (31), a motor (33) is fixedly connected to the outside of the connecting plate (32), a lead screw (34) is fixedly connected to the output end of the motor (33), a moving block (35) is threadedly connected to the outside of the lead screw (34), a sliding groove (36) is provided inside the rotating plate (31), a connecting rod (37) is fixedly connected to the bottom of the moving block (35), a detection cover (38) is fixedly connected to the bottom of the connecting rod (37), a sensor (39) is fixedly connected to the outside of the rotating plate (31), a wire (310) is fixedly connected to the outside of the sensor (39), and an alarm light (311) is fixedly connected to the outside of the sensor (39).

2. The CPVC pipe extrusion die according to claim 1, characterized in that: The discharge pipe (1) is provided with an adjustment mechanism (4). The adjustment mechanism (4) includes a movable pipe (41). A rotating rod (42) is movably connected inside the movable pipe (41). A ball bearing (43) is fixedly connected to the outside of the rotating rod (42). A through hole (44) is opened inside the ball bearing (43). An extension plate (45) is fixedly connected to the outside of the rotating rod (42). A threaded pipe (46) is fixedly connected to the outside of the extension plate (45). A screw (47) is threaded inside the threaded pipe (46). A first positioning hole (48) and a second positioning hole (49) are opened in the side wall of the discharge pipe (1).

3. The CPVC pipe extrusion die according to claim 1, characterized in that: The operating plate (31) is fixedly connected to the top of the discharge pipe (1), and the connecting plate (32) is symmetrically distributed on the top of the operating plate (31).

4. The CPVC pipe extrusion die according to claim 1, characterized in that: The lead screw (34) is rotatably connected between two connecting plates (32), and the moving block (35) is slidably connected to the top of the operating plate (31).

5. The CPVC pipe extrusion die according to claim 1, characterized in that: The connecting rod (37) is slidably connected inside the chute (36), and the detection cover (38) is movably connected above the discharge pipe (1) via the connecting rod (37).

6. The CPVC pipe extrusion die according to claim 1, characterized in that: The end of the wire (310) away from the sensor (39) is fixedly connected to the outside of the detection cover (38), and the sensor (39) is electrically connected to the alarm light (311).

7. The CPVC pipe extrusion die according to claim 2, characterized in that: The movable tube (41) is fixedly connected to the outside of the discharge tube (1), and the rotating ball (43) is rotatably connected to the inside of the discharge tube (1) through the rotating rod (42), with the outside of the rotating ball (43) closely attached to the inner wall of the discharge tube (1).

8. The CPVC pipe extrusion die according to claim 2, characterized in that: The screw (47) is adapted to the first positioning hole (48) and the second positioning hole (49), and the first positioning hole (48) and the second positioning hole (49) form a 90-degree angle.

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