Efficient plastic pipe fitting injection molding device easy to discharge

Abstract

The invention provides an efficient plastic pipe injection molding device facilitating discharging. A material extruding mechanism is used for extruding materials into an injection mold, a reset mechanism is arranged between a first mold body and a second mold body, a demolding plate is arranged in an injection molding cavity in a sliding mode, a rotating mechanism is arranged on one side of the material extruding mechanism, and the injection mold is arranged on the rotating mechanism. According to the injection molding device, the multiple injection molding molds are arranged to be matched with the rotating mechanism, so that the different injection molding molds are sequentially communicated with the material extruding mechanism, then when one injection molding mold is demolded, the other injection molding mold conducts injection molding, and the injection molding efficiency is greatly improved; wherein the first mold body is connected with the demolding plate, so that the demolding action is completed while the injection molding cavity is opened by the first mold body, the demolding efficiency is improved, the demolding time is shortened, and the injection molding efficiency is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding equipment, and more specifically, relates to a high-efficiency injection molding device for plastic pipes which is easy to unload. Background Art

[0002] Injection molding is a method of manufacturing plastic products. Molten plastic is injected into a plastic product mold under pressure and cooled to form various plastic parts.

[0003] In actual production, the injection mold needs to retreat to the demolding station after completing the injection of the material, and then the demolding motor pushes the injection molded parts in the injection mold for demolding. After the demolding mechanism is reset, the injection mold returns to the injection molding station for the next round of injection molding.

[0004] As described above, after one injection is completed, the injection mold needs to perform multiple actions such as retreat, demoulding, demoulding reset, and mold reset. In order to complete the demoulding, the efficiency of injection is greatly reduced. Summary of the invention

[0005] The object of the present invention is to provide a high-efficiency plastic pipe injection molding device which is easy to unload, so as to improve the injection molding efficiency.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a high-efficiency injection molding device for plastic pipe fittings that is easy to unload, including an extrusion mechanism, multiple injection molds, a reset mechanism, a stripping plate and a rotating mechanism, wherein the extrusion mechanism is used to heat the material to a molten state and extrude it from the discharge end of the extrusion mechanism; the injection mold includes a first mold body and a second mold body, the interior of the second mold body is provided with an injection cavity, one end of the injection cavity is arranged with an opening, after the first mold body and the second mold body are buckled together, the open end of the injection cavity is sealed, and the first mold body is provided with a feed port, which is connected to the injection cavity; the reset mechanism is arranged between the first mold body and the second mold body, and under the action of an external force, when the first mold body and the second mold body are buckled together, the first mold body is , the reset mechanism stores energy; when the external force is removed, the reset mechanism releases energy and drives the first mold body to separate from the second mold body; the stripping plate is slidably arranged in the injection cavity, the side wall of the stripping plate is slidably and sealedly connected with the side wall of the injection cavity, and the stripping plate is connected to the first mold body, when the reset mechanism is in a natural state, the top of the stripping plate is flush with the top of the second mold body; when the first mold body and the second mold body are buckled with each other, the top of the stripping plate constitutes the bottom surface of the injection cavity; the rotating mechanism is arranged on one side of the extrusion mechanism, and the injection mold is arranged on the rotating mechanism, and the rotating mechanism is used to drive the injection mold to rotate, so that the feed port of the injection mold is sequentially connected with the discharge end of the extrusion mechanism.

[0007] In one possible implementation, the extrusion mechanism includes a silo, a feed pipe, a heating element and a pushing assembly. The feed pipe is arranged horizontally, the silo is arranged above the feed pipe, the silo is communicated with the feed pipe, and the material in the silo can enter the feed pipe under the action of gravity. The heating element is arranged in a spiral shape around the outside of the feed pipe, and the heating element is arranged downstream of the silo. The pushing assembly is arranged at one end of the feed pipe, and the pushing assembly is used to push the material along the feed pipe and discharge it from the discharge end of the feed pipe.

[0008] In one possible implementation, the connection between the silo and the feed pipe is a feed port, and the pushing assembly includes a pushing rod, a driving rod, a driving disk and a first motor. The pushing rod is slidably and sealed in the feed pipe, and the driving disk is arranged at the power output end of the first motor. One end of the driving rod is hinged to the pushing rod, and the other end of the driving rod is hinged to the end surface of the driving disk. The connection between the driving rod and the driving disk and the center of the driving disk are arranged at intervals. The end of the pushing rod that contacts the material can be arranged upstream of the feed port under the drive of the driving rod, and the end of the pushing rod that contacts the material can be arranged downstream of the feed port under the drive of the driving rod, and the end of the pushing rod that does not contact the material is arranged upstream of the feed port.

[0009] In a possible implementation, the length of the driving rod is not less than the length of the conveying pipe, a slide rail is provided upstream of the conveying pipe, an output shaft is provided at the power output end of the first motor, the driving disk is provided on the output shaft, and the output shaft is rotatably provided on two mounting plates, the bottom of the mounting plate is provided on an n-shaped mounting frame, two rollers are provided on the mounting frame, the rollers are adapted to the slide rail, the rollers are rotatably provided on the slide rail, a driving plate is provided on the mounting frame, fixed plates are provided at both ends of the slide rail, a lead screw is rotatably provided between the two fixed plates, the lead screw is screwed on the driving plate, a second motor is provided on the fixed plate, the power output end of the second motor is connected with the lead screw, when the mounting frame is provided at the end of the slide rail away from the conveying pipe, the push rod is below the feed port; when the mounting frame is provided at the end of the slide rail close to the conveying pipe, the end of the push rod in contact with the material is flush with the end of the conveying pipe close to the injection mold.

[0010] In a possible implementation, the second mold body is cylindrical, and one end of the second mold body is open, a molding column is provided inside the second mold body, and the gap between the molding column and the second mold body is an injection cavity, a through hole is provided at the bottom end of the second mold body, one end of a U-shaped connecting rod passes through the through hole and is connected to the stripping plate, the other end of the connecting rod is connected to the first mold body, and when the top end of the stripping plate is flush with the top end of the second mold body, the bending part of the connecting rod is spaced apart from the second mold body.

[0011] In a possible implementation, the reset mechanism includes a first reset plate, a second reset plate and a reset spring, the first reset plate is arranged on the side wall of the first mold body, the second reset plate is arranged on the side wall of the second mold body, the reset spring is arranged between the first reset plate and the second reset plate, and when the reset spring is in a natural state, the first mold body and the second mold body are arranged at intervals, and the top of the stripping plate is flush with the top of the second mold body.

[0012] In a possible implementation, the rotating mechanism includes a rotating plate, a third motor, a rotating shaft and multiple rotating sub-shafts, the rotating plate is arranged on one side of the conveying pipe, the third motor is arranged on the rotating plate, the rotating shaft is arranged at the power output end of the third motor, the rotating sub-shaft is L-shaped, the rotating sub-shaft corresponds to the injection mold one by one, one end of the rotating sub-shaft is connected to the corresponding injection mold, and the other end of the rotating sub-shaft is connected to the rotating shaft.

[0013] In a possible implementation, there are four injection molds, which are arranged in a cross shape. The rotating mechanism also includes a support ring, which is sleeved on the outside of the four injection molds, and the injection mold can slide relative to the support ring. A first leg is provided at the bottom of the support ring. The reset mechanism is provided on one side of the injection mold close to the center of the support ring. Two connecting rods are provided on each of the injection molds, and the two connecting rods are provided on opposite sides of the injection mold, and the connecting rods are spaced apart from the inner wall of the support ring.

[0014] In a possible implementation, the rotating mechanism also includes a pushing member, one end of which is provided with a pushing end face, the pushing end face is arranged to be inclined from high to low from away from the silo to close to the silo, and the first mold body of each injection mold is in contact with the pushing end face, and the difference between the distance from the highest point of the pushing end face to the silo and the distance from the lowest point of the pushing end face to the silo is equal to the length of the injection cavity.

[0015] In one possible implementation, when the injection mold rotates to the lowest point, the connecting rod is arranged on both sides of the injection mold, a second leg is arranged at the bottom of the pushing member, and an injection hole is arranged on the pushing member, the feed pipe is inserted into the injection hole, and when the injection mold rotates to the highest point, the feed port is connected to the discharge end of the feed pipe, and a third leg is arranged at the bottom of the feed pipe.

[0016] The beneficial effect of the easy-to-unload plastic pipe high-efficiency injection molding device provided by the present invention is that: compared with the prior art, the present invention arranges multiple injection molds to cooperate with the rotating mechanism, so that different injection molds are connected to the extrusion mechanism in turn, and then when one injection mold is demolded, another injection mold is performing injection molding, which greatly improves the injection molding efficiency. In addition, by arranging the injection mold to include a first mold body and a second mold body, wherein the first mold body is connected to the demolding plate, the demolding action is completed while the first mold body opens the injection cavity, thereby improving the demolding efficiency, reducing the demolding time, and further improving the injection molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of the high-efficiency injection molding device for plastic pipes that is easy to unload provided by an embodiment of the present invention during operation; Figure 2 A cross-sectional view of an injection mold in an initial state provided by an embodiment of the present invention; Figure 3 A cross-sectional view of an injection mold during demoulding provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a front view of an injection mold provided by an embodiment of the present invention; Figure 5 A cross-sectional view of a push rod provided in an embodiment of the present invention when pushing materials; Figure 6 A cross-sectional view of a feed pipe during feeding provided by an embodiment of the present invention.

[0019] Among them, the reference numerals in the figures are as follows: 1. Extrusion mechanism; 2. Injection mold; 3. Reset mechanism; 4. Stripping plate; 5. Rotation mechanism; 101, silo; 102, feed pipe; 103, heating element; 104, pusher assembly; 105, drive rod; 106, drive plate; 107, first motor; 108, feed inlet; 109, pusher rod; 110, slide rail; 111, output shaft; 112, mounting plate; 113, mounting frame; 114, roller; 115, fixing plate; 116, second motor; 117, lead screw; 118, third leg; 201, first mold body; 202, second mold body; 203, injection cavity; 204, molding column; 301, first reset plate; 302, second reset plate; 303, reset spring; 501, rotating plate; 502, third motor; 503, rotating shaft; 504, rotating sub-shaft; 505, supporting ring; 506, first leg; 507, pushing member; 508, pushing end surface; 509, second leg. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0022] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0023] The directions or positional relationships indicated by terms such as “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0025] The easy-to-discharge high-efficiency injection molding device for plastic pipes provided by the present invention is now described.

[0026] Please also read Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The high-efficiency injection molding device for plastic pipe fittings that is easy to unload comprises an extrusion mechanism 1, a plurality of injection molds 2, a reset mechanism 3, a stripping plate 4 and a rotating mechanism 5, wherein the extrusion mechanism 1 is used to heat the material to a molten state and extrude the material from the discharge end of the extrusion mechanism 1, the injection mold 2 comprises a first mold body 201 and a second mold body 202, an injection cavity 203 is arranged inside the second mold body 202, and one end of the injection cavity 203 is arranged with an opening, after the first mold body 201 and the second mold body 202 are buckled with each other, the open end of the injection cavity is sealed, a feed port 108 is arranged on the first mold body 201, and the feed port 108 is connected to the injection cavity 203, the reset mechanism 3 is arranged between the first mold body 201 and the second mold body 202, and under the action of external force, the first mold body 201 and the second mold body 202 are mutually connected. When they are interlocked, the reset mechanism 3 stores energy. When the external force is removed, the reset mechanism 3 releases energy and drives the first mold body 201 to separate from the second mold body 202. The stripper plate 4 is slidably arranged in the injection cavity 203. The side wall of the stripper plate 4 is slidably and sealedly connected to the side wall of the injection cavity 203, and the stripper plate 4 is connected to the first mold body 201. When the reset mechanism 3 is in a natural state, the top of the stripper plate 4 is flush with the top of the second mold body 202. When the first mold body 201 and the second mold body 202 are interlocked, the top of the stripper plate 4 constitutes the bottom surface of the injection cavity 203. The rotating mechanism 5 is arranged on one side of the extrusion mechanism 1, and the injection mold 2 is arranged on the rotating mechanism 5. The rotating mechanism 5 is used to drive the injection mold 2 to rotate so that the feed port 108 of the injection mold 2 is sequentially connected to the discharge end of the extrusion mechanism 1.

[0027] The beneficial effect of the easy-to-unload efficient injection molding device for plastic pipe fittings provided in the present embodiment is as follows: compared with the prior art, the easy-to-unload efficient injection molding device for plastic pipe fittings provided in the present embodiment cooperates with the rotating mechanism 5 by setting a plurality of injection molds 2, so that different injection molds 2 are connected to the extrusion mechanism 1 in turn, and then when one injection mold 2 is demolding, another injection mold 2 is performing injection molding, which greatly improves the injection molding efficiency. In addition, by setting the injection mold 2 to include a first mold body 201 and a second mold body 202, wherein the first mold body 201 is connected to the demolding plate 4, the demolding action is completed while the first mold body 201 opens the injection cavity 203, thereby improving the demolding efficiency, reducing the demolding time, and further improving the injection molding efficiency.

[0028] Specifically in this embodiment, the extrusion mechanism 1 includes a silo 101, a feed pipe 102, a heating element 103 and a pushing assembly 104. The feed pipe 102 is arranged horizontally, the silo 101 is arranged above the feed pipe 102, the silo 101 is connected to the feed pipe 102, and the material in the silo 101 can enter the feed pipe 102 under the action of gravity. The heating element 103 is arranged in a spiral shape around the outside of the feed pipe 102, and the heating element 103 is arranged downstream of the silo 101. The pushing assembly 104 is arranged at one end of the feed pipe, and the pushing assembly 104 is used to push the material along the feed pipe 102 and discharge it from the discharge end of the feed pipe 102. The arrangement of the silo 101 allows the material to enter the feed pipe 102 by gravity without driving.

[0029] Combination Figure 5 and Figure 6 As shown, the connection between the silo 101 and the feeding pipe 102 is a feeding port 108, and the pushing assembly 104 includes a pushing rod 109, a driving rod 105, a driving disc 106 and a first motor 107. The pushing rod 109 is slidably and sealedly arranged in the feeding pipe 102, and the driving disc 106 is arranged at the power output end of the first motor 107. One end of the driving rod 105 is hinged to the pushing rod 109, and the other end of the driving rod 105 is hinged to the end face of the driving disc 106. The connection between the driving rod 105 and the driving disc 106 and the center of the driving disc 106 are arranged at intervals. In the process of the first motor 107 driving the driving disc 106 to rotate, the driving disc 106 can drive the pushing rod 109 to do reciprocating motion through the driving rod 105.

[0030] The end of the push rod 109 that contacts the material can be located upstream of the feed port 108 under the drive of the drive rod 105. At this time, the material can enter the feed pipe 102 under the action of gravity, and the end of the push rod 109 that contacts the material can be located downstream of the feed port 108 under the drive of the drive rod 105. This process is the process in which the push rod 109 pushes the material to the discharge end of the feed pipe 102, and the material is pushed in sections, with sufficient time to be heated to a molten state in the feed pipe 102, so as to be extruded from the discharge end. The end of the push rod 109 that does not contact the material is located upstream of the feed port 108, so that the material will not enter the upstream of the push pipe, thereby preventing material waste.

[0031] As a preferred technical solution, the length of the driving rod 105 is not less than the length of the feeding pipe 102, a slide rail 110 is provided upstream of the feeding pipe 102, an output shaft 111 is provided at the power output end of the first motor 107, a driving disc 106 is provided on the output shaft 111, the output shaft 111 is rotatably provided on two mounting plates 112, the bottom of the mounting plate 112 is provided on an n-shaped mounting frame 113, two rollers 114 are provided on the mounting frame 113, the rollers 114 are adapted to the slide rail 110, the rollers 114 are rotatably provided on the slide rail 110, and a driving plate 113 is provided on the mounting frame 113 , fixed plates 115 are provided at both ends of the slide rail 110, and a lead screw 117 is rotatably provided between the two fixed plates 115, and the lead screw 117 is screwed on the driving plate, and a second motor 116 is provided on the fixed plate 115, and the power output end of the second motor 116 is connected to the lead screw 117, when the mounting frame 113 is provided at the end of the slide rail away from the feeding pipe 102, the push rod 109 is below the feed port 108, and when the mounting frame 113 is provided at the end of the slide rail close to the feeding pipe 102, the end of the push rod 109 in contact with the material is flush with the end of the feeding pipe 102 close to the injection mold 2. When the injection molding work is completed, the driving rod 105 is suspended in a horizontal state, and at this time, the second motor 116 is turned on to drive the mounting frame 113 to move toward the feeding pipe 102 until the push rod 109 is flush with the top of the feeding pipe 102, and all the materials in the feeding pipe 102 will be squeezed out to keep the feeding pipe 102 clean.

[0032] It has to be said here that the diameter of the top end of the push rod 109 gradually decreases to cater to the gradually decreasing diameter of the conveying pipe 102, so that the reducing section of the push rod 109 can perfectly fit with the reducing section of the conveying pipe 102, so as to completely discharge the material in the conveying pipe 102.

[0033] like Figure 2 and Figure 3The second mold body 202 is shown in a cylindrical shape, and one end of the second mold body 202 is open. A molding column 204 is provided inside the second mold body 202. The gap between the molding column 204 and the second mold body 202 is an injection cavity 203. A through hole is provided at the bottom end of the second mold body 202. One end of a U-shaped connecting rod passes through the through hole and is connected to the stripping plate 4. The other end of the connecting rod is connected to the first mold body 201. When the top of the stripping plate 4 is flush with the top of the second mold body 202, the bending part of the connecting rod is spaced from the second mold body 202. The arrangement of the connecting rod allows the stripping plate 4 to be perfectly linked with the first mold body 201 without affecting the injection cavity 203, which is convenient for injection and demoulding.

[0034] In a possible implementation, the reset mechanism 3 includes a first reset plate 301, a second reset plate 302 and a reset spring 303, the first reset plate 301 is arranged on the side wall of the first mold body 201, the second reset plate 302 is arranged on the side wall of the second mold body 202, the reset spring 303 is arranged between the first reset plate 301 and the second reset plate 302, and when the reset spring 303 is in a natural state, the first mold body 201 and the second mold body 202 are arranged at intervals, and the top of the stripping plate 4 is flush with the top of the second mold body 202.

[0035] like Figure 1 As shown, the rotating mechanism 5 includes a rotating plate 501, a third motor 502, a rotating shaft 503 and a plurality of rotating sub-shafts 504. The rotating plate 501 is arranged at one side of the feeding pipe 102, the third motor 502 is arranged on the rotating plate 501, the rotating shaft 503 is arranged at the power output end of the third motor 502, and the rotating sub-shaft 504 is L-shaped. The rotating sub-shaft 504 corresponds to the injection mold 2 one by one. One end of the rotating sub-shaft 504 is connected to the corresponding injection mold 2, and the other end of the rotating sub-shaft 504 is connected to the rotating shaft 503. The rotating mechanism 5 thus arranged has a simple structure and is easy to use. By driving multiple molds to rotate, the injection mold 2 can be switched between the demoulding station and the injection station without affecting each other, thereby greatly improving the injection efficiency.

[0036] Specifically, in this embodiment, there are four injection molds 2, which are arranged in a cross shape, and the rotating mechanism 5 also includes a support ring 505, which is sleeved on the outside of the four injection molds 2, and the injection mold 2 can slide relative to the support ring 505, and the bottom of the support ring 505 is provided with a first leg 506, and the reset mechanism 3 is provided on one side of the injection mold 2 close to the center of the support ring 505, and each injection mold 2 is provided with two connecting rods, which are arranged on opposite sides of the injection mold 2, and the connecting rods are arranged at intervals from the inner wall of the support ring 505. The provision of the support ring 505 can play a role in auxiliary support for the injection mold 2.

[0037] In addition, the rotating mechanism 5 further includes a pusher 507, one end of which is provided with a pusher end face 508, which is arranged tilted from high to low from far away from the silo 101 to close to the silo 101, and the first mold body 201 of each injection mold 2 abuts against the pusher end face 508, and the difference between the distance from the highest point of the pusher end face 508 to the silo 101 and the distance from the lowest point of the pusher end face 508 to the silo 101 is equal to the length of the injection cavity 203. The setting of the pusher 507 enables the injection mold 2 to realize the mutual engagement or separation of the first mold body 201 and the second mold body 202 during the rotation process, and when they are mutually engaged, injection molding can be performed, and when they are separated, the injection molded part can be demoulded, and the position switching of the injection mold 2, the relative movement of the first mold body 201 and the second mold body 202, and demoulding are performed simultaneously, which greatly improves the injection molding efficiency.

[0038] Finally, when the injection mold 2 rotates to the bottom, the connecting rods are arranged on both sides of the injection mold 2, the bottom of the pusher 507 is provided with a second leg 509, and the pusher 507 is provided with an injection hole, the feed pipe 102 is inserted into the injection hole, and when the injection mold 2 rotates to the highest point, the feed inlet 108 is connected to the discharge end of the feed pipe 102, and the bottom of the feed pipe 102 is provided with a third leg 118. In this way, the setting of the connecting rod will not affect the separation of the injection molded part from the second mold body 202, and the effect of avoidance is achieved.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient plastic pipe injection molding device that is easy to unload, characterized in that: include: An extrusion mechanism (1) is used to heat the material to a molten state and extrude the material from a discharge end of the extrusion mechanism (1); A plurality of injection molds (2), comprising a first mold body (201) and a second mold body (202), wherein an injection cavity (203) is provided inside the second mold body (202), and one end of the injection cavity (203) is open; after the first mold body (201) and the second mold body (202) are fastened to each other, the open end of the injection cavity is sealed; a feed port (108) is provided on the first mold body (201), and the feed port (108) is in communication with the injection cavity (203); A reset mechanism (3) is provided between the first mold body (201) and the second mold body (202); when the first mold body (201) and the second mold body (202) are locked together under the action of an external force, the reset mechanism (3) stores energy; when the external force is removed, the reset mechanism (3) releases energy and drives the first mold body (201) to separate from the second mold body (202); a stripper plate (4) slidably disposed in the injection cavity (203); a side wall of the stripper plate (4) is slidably and sealingly connected to a side wall of the injection cavity (203); and the stripper plate (4) is connected to the first mold body (201); when the reset mechanism (3) is in a natural state, the top of the stripper plate (4) is flush with the top of the second mold body (202); when the first mold body (201) and the second mold body (202) are mutually buckled, the top of the stripper plate (4) constitutes the bottom surface of the injection cavity (203); The rotating mechanism (5) is arranged on one side of the extrusion mechanism (1), and the injection mold (2) is arranged on the rotating mechanism (5). The rotating mechanism (5) is used to drive the injection mold (2) to rotate so that the feed port (108) of the injection mold (2) is connected to the discharge end of the extrusion mechanism (1) in sequence.

2. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 1, characterized in that: The extrusion mechanism (1) comprises a material bin (101), a material delivery pipe (102), a heating element (103) and a material pushing assembly (104); the material delivery pipe (102) is arranged horizontally, the material bin (101) is arranged above the material delivery pipe (102), the material bin (101) is connected to the material delivery pipe (102), and the material in the material bin (101) can enter the material delivery pipe (102) under the action of gravity; the heating element (103) is arranged in a spiral shape around the outside of the material delivery pipe (102), and the heating element (103) is arranged downstream of the material bin (101); the material pushing assembly (104) is arranged at one end of the material delivery pipe, and the material pushing assembly (104) is used to push the material along the material delivery pipe (102) and discharge it from the discharge end of the material delivery pipe (102).

3. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 2, characterized in that: The connection point between the silo (101) and the feed pipe (102) is a feed inlet (108). The push assembly (104) comprises a push rod (109), a drive rod (105), a drive disk (106) and a first motor (107). The push rod (109) is slidably and sealedly arranged in the feed pipe (102). The drive disk (106) is arranged at the power output end of the first motor (107). One end of the drive rod (105) is hinged to the push rod (109), and the other end of the drive rod (105) is hinged to the drive disk (106). ), the connection between the driving rod (105) and the driving disk (106) and the center of the driving disk (106) are arranged at intervals, the end of the pushing rod (109) in contact with the material can be arranged upstream of the feed port (108) under the drive of the driving rod (105), and the end of the pushing rod (109) in contact with the material can be arranged downstream of the feed port (108) under the drive of the driving rod (105), and the end of the pushing rod (109) not in contact with the material is arranged upstream of the feed port (108).

4. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 3, characterized in that: The length of the driving rod (105) is not less than the length of the conveying pipe (102); a slide rail (110) is provided upstream of the conveying pipe (102); an output shaft (111) is provided at the power output end of the first motor (107); the driving disc (106) is provided on the output shaft (111); the output shaft (111) is rotatably provided on two mounting plates (112); the bottom of the mounting plate (112) is provided on an n-shaped mounting frame (113); two rollers (114) are provided on the mounting frame (113); the rollers (114) are adapted to the slide rail (110); the rollers (114) are rotatably provided on the slide rail (110); a driving plate is provided on the mounting frame (113); the slide rail (110) is provided with a driving plate; A fixing plate (115) is provided at both ends of the slide rail (10), a lead screw (117) is rotatably provided between the two fixing plates (115), the lead screw (117) is screwed to the driving plate, a second motor (116) is provided on the fixing plate (115), a power output end of the second motor (116) is connected to the lead screw (117), when the mounting frame (113) is provided at the end of the slide rail away from the feed pipe (102), the push rod (109) is located below the feed port (108); when the mounting frame (113) is provided at the end of the slide rail close to the feed pipe (102), the end of the push rod (109) in contact with the material is flush with the end of the feed pipe (102) close to the injection mold (2).

5. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 4, characterized in that: The second mold body (202) is cylindrical, and one end of the second mold body (202) is arranged with an opening. A molding column (204) is provided inside the second mold body (202). The gap between the molding column (204) and the second mold body (202) is an injection cavity (203). A through hole is provided at the bottom end of the second mold body (202). One end of a U-shaped connecting rod passes through the through hole and is connected to the stripping plate (4). The other end of the connecting rod is connected to the first mold body (201). When the top end of the stripping plate (4) is flush with the top end of the second mold body (202), the bending part of the connecting rod is spaced apart from the second mold body (202).

6. The high-efficiency injection molding device for plastic pipes that is easy to unload as claimed in claim 5, characterized in that: The reset mechanism (3) comprises a first reset plate (301), a second reset plate (302) and a reset spring (303); the first reset plate (301) is arranged on the side wall of the first mold body (201); the second reset plate (302) is arranged on the side wall of the second mold body (202); the reset spring (303) is arranged between the first reset plate (301) and the second reset plate (302); and when the reset spring (303) is in a natural state, the first mold body (201) and the second mold body (202) are arranged at a distance, and the top end of the stripping plate (4) is flush with the top end of the second mold body (202).

7. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 6, characterized in that: The rotating mechanism (5) comprises a rotating plate (501), a third motor (502), a rotating shaft (503) and a plurality of rotating sub-shafts (504); the rotating plate (501) is arranged on one side of the feeding pipe (102); the third motor (502) is arranged on the rotating plate (501); the rotating shaft (503) is arranged at a power output end of the third motor (502); the rotating sub-shaft (504) is L-shaped; the rotating sub-shaft (504) corresponds to the injection mold (2) one by one; one end of the rotating sub-shaft (504) is connected to the corresponding injection mold (2); and the other end of the rotating sub-shaft (504) is connected to the rotating shaft (503).

8. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 7, characterized in that: Four injection molds (2) are provided, and the four injection molds (2) are arranged in a cross shape. The rotating mechanism (5) further comprises a support ring (505), the support ring (505) is sleeved on the outside of the four injection molds (2), and the injection mold (2) can slide relative to the support ring (505), and a first leg (506) is provided at the bottom of the support ring (505). The reset mechanism (3) is provided on one side of the injection mold (2) close to the center of the support ring (505), and each of the injection molds (2) is provided with two connecting rods, and the two connecting rods are provided on opposite sides of the injection mold (2), and the connecting rods are spaced apart from the inner wall of the support ring (505).

9. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 8, characterized in that: The rotating mechanism (5) further comprises a pushing member (507), one end of which is provided with a pushing end face (508), the pushing end face (508) being arranged tilted from high to low, from away from the material bin (101) to close to the material bin (101), and the first mold body (201) of each of the injection molds (2) is in contact with the pushing end face (508), and the difference between the distance from the highest point of the pushing end face (508) to the material bin (101) and the distance from the lowest point of the pushing end face (508) to the material bin (101) is equal to the length of the injection cavity (203).

10. The easy-to-discharge plastic pipe high-efficiency injection molding device according to claim 9, characterized in that: When the injection mold (2) rotates to the lowest position, the connecting rods are arranged on both sides of the injection mold (2), a second leg (509) is arranged at the bottom of the pushing member (507), and an injection hole is arranged on the pushing member (507), the feed pipe (102) is inserted into the injection hole, and when the injection mold (2) rotates to the highest point, the feed port (108) is connected to the discharge end of the feed pipe (102), and a third leg (118) is arranged at the bottom of the feed pipe (102).

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