Injection molding equipment for plastic production

Abstract

The injection molding equipment for plastic production comprises a machine body, a discharging nozzle and a mounting frame are fixedly mounted at the left end and the right end of the machine body correspondingly, a feeding pipe communicates with the side, close to the mounting frame, of the upper surface of the machine body, a hopper is fixedly connected to the end, away from the machine body, of the feeding pipe, and a pushing structure is mounted at the upper end of the hopper; a mounting shell is fixedly connected to the peripheral side surface of the hopper in a penetrating manner; a fan is fixed in the mounting shell; a heater and a first connecting flange are fixedly arranged on the peripheral side face of the machine body in a sleeving mode, the left end of the first connecting flange is fixedly connected with a first shell and a second shell through bolts, and the heater is located in a cylindrical structure composed of the first shell and the second shell; the first shell is fixedly connected with a gas conveying pipe, and the other end of the gas conveying pipe is arranged at an inlet of the mounting shell in a sleeving mode. According to the injection molding machine, injection molding raw materials in the machine body can be heated and melted through heat generated by the heater, and the injection molding raw materials in the hopper are preheated, so that the injection molding raw materials can be rapidly heated and melted after entering the machine body.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and in particular to an injection molding device for plastic production. Background Technology

[0002] Injection molding machines are the main molding equipment used to form various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. An injection molding machine mainly includes a machine body, a feeding screw located inside the machine body, a hopper on the machine body for feeding material, a heater for heating the molten material inside the machine body, and a nozzle. The heater is located on the outside of the machine body. When the heater is heating, its surface emits heat due to thermal radiation, which is wasted and poses operational safety risks. Furthermore, the material in the hopper falls into the machine body naturally, which can easily lead to blockages and insufficient material flow, resulting in long material flow times and low injection efficiency. Therefore, we propose an injection molding device for plastic production. Summary of the Invention

[0003] The main objective of this invention is to provide an injection molding device for plastic production, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A plastic injection molding machine includes a body, which is a tubular structure. A discharge nozzle and a mounting frame are fixedly installed at the left and right ends of the body, respectively. A feed pipe is connected to the upper surface of the body near the mounting frame. A hopper is fixedly connected to the end of the feed pipe furthest from the body, and a pusher structure is installed at the upper end of the hopper. A mounting shell is inserted and fixedly connected to the circumferential side of the hopper, and a fan is fixed inside the mounting shell, blowing air into the inner cavity of the hopper. A heater and a first connecting flange are fixedly sleeved on the circumferential side of the body. Both the heater and the first connecting flange are located on the left side of the feed pipe, with the first connecting flange positioned between the heater and the feed pipe. Between; the left end of the No. 1 connecting flange is fixedly connected to the No. 1 housing and the No. 2 housing by bolts, and the No. 1 housing and the No. 2 housing together form a cylindrical structure; the heater is located inside the cylindrical structure composed of the No. 1 housing and the No. 2 housing; the lead wire of the heater passes through the contact point of the No. 1 housing and the No. 2 housing; an air supply pipe is fixedly connected to the No. 1 housing, and the other end of the air supply pipe is sleeved at the inlet of the mounting shell; a feeding screw is set in the machine body, and a drive structure is installed in the mounting frame. The output end of the drive structure moves through the left end face of the mounting frame and is connected to the feeding screw for transmission. The feeding screw pushes the injection molding material to the discharge nozzle.

[0006] Preferably, the drive structure includes a No. 1 motor fixed to the right end of the mounting frame and a hydraulic cylinder fixed to the upper end of the mounting frame; the output end of the No. 1 motor extends movably through the inner side of the mounting frame and is fixedly connected to a transmission sleeve; a transmission column is inserted through the left end of the transmission sleeve; a drive ring is fixedly connected to the left end of the transmission column; a connecting column is coaxially fixed to the middle of the left end of the drive ring; a baffle is fixedly connected to the left end of the connecting column; and a feeding screw is fixed to the left end of the baffle; a push-pull bracket is fixedly connected to the output end of the hydraulic cylinder; the push-pull bracket extends into the mounting frame and is movably sleeved on the drive ring.

[0007] Preferably, the transmission sleeve and the transmission column form an interlocking structure. The transmission column rotates coaxially with the rotation of the transmission sleeve. The transmission column moves left and right relative to the transmission sleeve as the push-pull frame moves left and right. The baffle is movably embedded in the left end of the mounting frame. The baffle is a circular plate with a diameter consistent with the inner diameter of the machine body.

[0008] Preferably, the feeding structure includes a guide hopper, a base is fixedly connected to the inner side of the guide hopper, a second motor is fixedly connected to the upper middle part of the base, the output end of the second motor extends movably to the lower part of the base and is fixedly connected to a drive shaft, a stirring shaft is inserted and fixedly connected to the drive shaft, the stirring shaft is horizontally arranged, two first stirring plates are inserted and fixedly connected to the stirring shaft, the two first stirring plates are located on both sides of the drive shaft; a pusher plate is fixedly connected to the lower end of the drive shaft, the pusher plate is inclined.

[0009] Preferably, two sleeves are movably sleeved on the stirring shaft, with the two sleeves located on both sides of the drive shaft respectively. The outer surfaces of the two sleeves abut against the inner surfaces of the two No. 1 stirring plates respectively. A No. 2 stirring plate is inserted and fixedly connected to the circumferential surfaces of the two sleeves. A No. 2 bevel gear is fixedly connected to the inner surfaces of the two sleeves. A No. 1 bevel gear is sleeved on the drive shaft, and the No. 1 bevel gear meshes with the upper surfaces of the two No. 2 bevel gears.

[0010] Preferably, a connecting pipe is fixedly connected to the upper end of the first bevel gear, and the connecting pipe is fixed to the lower end of the machine base. Both second bevel gears are movably sleeved on the stirring shaft.

[0011] Preferably, the connecting pipe is sleeved on the drive shaft, and both the connecting pipe and the first bevel gear are spaced apart from the drive shaft.

[0012] Preferably, a No. 2 connecting flange is fixedly connected to the upper part of the circumferential side of the hopper, and a No. 3 connecting flange is fixedly connected to the circumferential side of the guide hopper. The No. 3 connecting flange is fixed to the upper end of the No. 2 connecting flange by bolts.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The No. 1 housing and the No. 2 housing are connected and installed via the No. 1 connecting flange on the machine body. The No. 1 housing and the No. 2 housing together form a cylindrical structure. The heater is located inside the cylindrical structure composed of the No. 1 housing and the No. 2 housing. When the heater heats and melts the injection molding material in the machine body, it heats the air inside the cylindrical structure through thermal radiation. At this time, the No. 1 housing and the No. 2 housing are heated and their temperature is lower than that of the heater surface. The No. 1 housing and the No. 2 housing form an isolation and protection for the heater, which improves the operational safety to a certain extent. The heated air is sent into the hopper through the air supply pipe, the mounting shell and the fan inside the mounting shell, heating the injection molding material in the hopper and preheating the injection molding material. This allows the injection molding material to heat up and melt more quickly after entering the machine body, improving injection molding efficiency. At the same time, the heat generated by the heater can be further utilized to reduce heat waste and achieve energy saving.

[0015] 2. Through the pushing structure on the hopper, as the injection molding material falls into the machine body, the No. 2 motor drives the stirring shaft, No. 1 stirring plate, No. 2 stirring plate, and pushing plate to rotate around the Z-axis via the transmission shaft. The stirring shaft, No. 1 stirring plate, and No. 2 stirring plate rotate and stir the injection molding material, keeping it in a loose state to prevent clumping and blockage. The rotating pushing plate pushes the injection molding material into the feed pipe, promoting the falling of the injection molding material, thereby accelerating the falling of the injection molding material, ensuring the amount of injection molding material falling, shortening the feeding time, and improving injection molding efficiency. In addition, during the rotation of the stirring shaft, the sleeve and No. 2 bevel gear rotate around the Z-axis. The No. 2 bevel gear meshes with the No. 1 bevel gear, so that the No. 2 bevel gear rotates around the X-axis at the same time as it rotates around the Z-axis, allowing the No. 2 stirring plate to fully stir the injection molding material in the hopper and improve the stirring effect. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of an injection molding equipment for plastic production according to the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of an injection molding equipment for plastic production according to the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of an injection molding equipment for plastic production according to the present invention;

[0019] Figure 4 This is a schematic diagram of the drive structure of an injection molding equipment for plastic production according to the present invention;

[0020] Figure 5 This is a structural schematic diagram of the transmission sleeve and transmission column;

[0021] Figure 6 This is a cross-sectional schematic diagram of the material pushing structure of an injection molding equipment for plastic production according to the present invention.

[0022] In the diagram: 1. Machine body; 101. No. 1 connecting flange; 2. Feed pipe; 3. Hopper; 31. No. 2 connecting flange; 4. Heater; 5. Discharge nozzle; 6. Feeding screw; 7. Mounting frame; 8. Drive structure; 9. Pushing structure; 10. No. 1 housing; 11. No. 2 housing; 12. Air supply pipe; 13. Mounting shell; 81. No. 1 motor; 82. Hydraulic cylinder; 83. Connecting column; 831. Drive ring; 832. Baffle; 84. Transmission sleeve; 85. Transmission column; 86. Push-pull frame; 91. Guide hopper; 911. No. 3 connecting flange; 92. Machine base; 93. No. 2 motor; 931. Transmission shaft; 94. Stirring shaft; 95. Connecting pipe; 951. No. 1 bevel gear; 96. Sleeve; 961. No. 2 bevel gear; 97. No. 1 stirring plate; 98. No. 2 stirring plate; 99. Pushing plate. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figure 1-6As shown, an injection molding machine for plastic production includes a body 1, which is a tubular structure. A discharge nozzle 5 and a mounting frame 7 are fixedly installed at the left and right ends of the body 1, respectively. A feed pipe 2 is connected to the upper surface of the body 1 near the mounting frame 7. A hopper 3 is fixedly connected to the end of the feed pipe 2 away from the body 1. The hopper 3 is used to hold injection molding raw materials. A pushing structure 9 is installed at the upper end of the hopper 3, which pushes the injection molding raw materials in the hopper 3 into the body 1 through the feed pipe 2. A mounting shell 13 is inserted and fixedly connected to the peripheral side of the hopper 3. A fan is fixed inside the mounting shell 13 and blows air into the inner cavity of the hopper 3. A heater 4 and a first connecting flange 101 are fixedly sleeved on the peripheral side of the body 1. Both the heater 4 and the first connecting flange 101 are located on the left side of the feed pipe 2. The first connecting flange 101 is located between the heater 4 and the feed pipe 2; the left end of the first connecting flange 101 is fixedly connected to the first housing 10 and the second housing 11 by bolts, and the first housing 10 and the second housing 11 together form a cylindrical structure; the heater 4 is located inside the cylindrical structure formed by the first housing 10 and the second housing 11; the lead wire of the heater 4 passes through the contact point between the first housing 10 and the second housing 11; the first housing 10 is fixedly connected to the air supply pipe 12, and the other end of the air supply pipe 12 is sleeved at the inlet of the mounting shell 13; the machine body 1 is provided with a feeding screw 6, and the mounting frame 7 is installed with a drive structure 8. The output end of the drive structure 8 moves through the left end face of the mounting frame 7 and is connected to the feeding screw 6 for transmission. The feeding screw 6 pushes the injection molding material to the discharge nozzle 5.

[0027] As a further explanation of the above technical solution, the drive structure 8 is used to drive the feeding screw 6 to rotate and move the feeding screw 6 left and right, pushing the molten injection molding material into the discharge nozzle 5, so that the molten injection molding material can flow out smoothly from the discharge nozzle 5. The drive structure 8 includes a primary motor 81 fixed to the right end of the mounting frame 7 and a hydraulic cylinder 82 fixed to the upper end of the mounting frame 7. The output end of the primary motor 81 extends movably through the inner side of the mounting frame 7 and is fixedly connected to a transmission sleeve 84. A transmission column 85 is inserted through the left end of the transmission sleeve 84. A drive ring 831 is fixedly connected to the left end of the transmission column 85. A connecting column 83 is coaxially fixed to the middle of the left end of the drive ring 831. A baffle 832 is fixedly connected to the left end of the connecting column 83. The feeding screw 6 is fixed to the left end of the baffle 832. The primary motor 81 drives the transmission sleeve 84, transmission column 85, drive ring 831, connecting column 83, and baffle 832 to rotate, thereby realizing the rotation of the feeding screw 6. A push-pull frame 86 is fixedly connected to the output end of the hydraulic cylinder 82. The push-pull frame 86 extends into the mounting frame 7 and is movably sleeved on the drive ring 831. The hydraulic cylinder 82 pushes the push-pull frame 86 to move left and right, thereby allowing the drive ring 831 to move left and right.

[0028] The transmission sleeve 84 and the transmission column 85 form an interlocking structure. The transmission column 85 rotates coaxially with the rotation of the transmission sleeve 84. The transmission column 85 moves left and right relative to the transmission sleeve 84 as the push-pull frame 86 moves left and right. This allows the drive ring 831 to move left and right and rotate synchronously when the hydraulic cylinder 82 pushes the push-pull frame 86 to move left and right. This allows the feeding screw 6 to be driven left and right by the hydraulic cylinder 82 while rotating. The baffle 832 is movably embedded in the left end of the mounting frame 7. The baffle 832 is a circular plate with a diameter that matches the inner diameter of the machine body 1. This allows the baffle 832 to move into the machine body 1 and abut against the inner wall of the machine body 1 during the left and right movement of the feeding screw 6, preventing molten injection molding material from leaking from the right side of the equipment.

[0029] As a further explanation of the above technical solution, the pusher structure 9 is used to stir the injection molding raw material and promote its fall, thereby improving the feeding efficiency and effect. The pusher structure 9 includes a guide hopper 91, a base 92 is fixedly connected to the inner side of the guide hopper 91, a second motor 93 is fixedly connected to the upper middle part of the base 92, the output end of the second motor 93 extends movably to the lower part of the base 92 and is fixedly connected to a drive shaft 931, a stirring shaft 94 is fixedly connected to the drive shaft 931, the stirring shaft 94 is horizontally set, and two first stirring plates 97 are fixedly connected to the stirring shaft 94, which are located on both sides of the drive shaft 931; a pusher plate 99 is fixedly connected to the lower end of the drive shaft 931, the pusher plate 99 is inclined, and during the feeding process, by rotating the pusher plate 99 in both directions, the pusher plate 99 can press down the injection molding raw material, promote its fall, or stir the injection molding raw material.

[0030] A first bevel gear 951 is fitted onto the drive shaft 931. Two sleeves 96 are movably fitted onto the stirring shaft 94, located on opposite sides of the drive shaft 931. Second bevel gears 961 are fixedly connected to the inner surfaces of both sleeves 96. The first bevel gear 951 meshes with the upper surfaces of the two second bevel gears 961. The outer surfaces of the two sleeves 96 abut against the inner surfaces of two first stirring plates 97. This maintains the first bevel gear 951 meshing with the two second bevel gears 961. After removing the first stirring plate 97 from the stirring shaft 94, the sleeves 96 and second bevel gears 961 can be directly removed from the stirring shaft 94, facilitating their assembly and disassembly. Second stirring plates 98 are inserted and fixedly connected to the circumferential surfaces of both sleeves 96.

[0031] A connecting pipe 95 is fixedly connected to the upper end of the first bevel gear 951. The connecting pipe 95 is fixed to the lower end of the base 92. Both second bevel gears 961 are movably sleeved on the stirring shaft 94.

[0032] The connecting pipe 95 is sleeved on the drive shaft 931, and both the connecting pipe 95 and the first bevel gear 951 are spaced apart from the drive shaft 931.

[0033] The operating principle and beneficial effects of the pusher structure 9 are as follows: During the process of the injection molding material falling from the hopper 3 into the machine body 1, the second motor 93 starts and drives the stirring shaft 94, the first stirring plate 97, the second stirring plate 98, and the pusher plate 99 to rotate around the Z-axis via the transmission shaft 931. The stirring shaft 94, the first stirring plate 97, and the second stirring plate 98 rotate and stir the injection molding material, keeping it in a loose state to prevent clumping and blockage. The pusher plate 99 rotates and pushes the injection molding material into the feed pipe 2, promoting the injection molding material... The falling material accelerates the descent of the injection molding material, ensuring the amount of material falling, shortening the feeding time, and improving injection molding efficiency. In addition, during the rotation of the stirring shaft 94, the sleeve 96 and the second bevel gear 961 are driven to rotate around the Z-axis. The second bevel gear 961 meshes with the first bevel gear 951, so that the second bevel gear 961 rotates around the X-axis while rotating around the Z-axis. This causes the second stirring plate 98 to rotate around both the Z-axis and the X-axis simultaneously, allowing the second stirring plate 98 to fully stir the injection molding material in the hopper 3 and improve the stirring effect.

[0034] It should be noted that a second connecting flange 31 is fixedly connected to the upper part of the peripheral side of the hopper 3, and a third connecting flange 911 is fixedly connected to the peripheral side of the guide hopper 91. The third connecting flange 911 is fixed to the upper end of the second connecting flange 31 by bolts, which facilitates the installation of the pushing structure 9 on the hopper 3. When the third connecting flange 911 abuts against the second connecting flange 31, the lower end of the guide hopper 91 abuts against the upper end of the hopper 3.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine for plastic production, comprising a machine body (1), characterized in that: The machine body (1) is a tubular structure. A discharge nozzle (5) and a mounting bracket (7) are fixedly installed at the left and right ends of the machine body (1), respectively. A feed pipe (2) is connected to the side of the upper surface of the machine body (1) near the mounting bracket (7). A hopper (3) is fixedly connected to the end of the feed pipe (2) away from the machine body (1). A pusher structure (9) is installed at the upper end of the hopper (3). A mounting shell (13) is fixedly connected to the periphery of the hopper (3). A fan is fixed inside the mounting shell (13). The fan blows air into the cavity of the hopper (3). A heater (4) and a first connecting flange (101) are fixedly sleeved on the periphery of the machine body (1). The heater (4) and the first connecting flange (101) are both located on the left side of the feed pipe (2), and the first connecting flange (101) is located between the heater (4) and the feed pipe (2). The left end of the flange (101) is fixedly connected to the first housing (10) and the second housing (11) by bolts. The first housing (10) and the second housing (11) together form a cylindrical structure. The heater (4) is located inside the cylindrical structure formed by the first housing (10) and the second housing (11). The lead wire of the heater (4) passes through the contact point between the first housing (10) and the second housing (11). A gas supply pipe (12) is fixedly connected to the first housing (10). The other end of the gas supply pipe (12) is sleeved at the inlet of the mounting shell (13). A feeding screw (6) is provided inside the machine body (1). A drive structure (8) is installed inside the mounting frame (7). The output end of the drive structure (8) movably passes through the left end face of the mounting frame (7) and is connected to the feeding screw (6) for transmission. The feeding screw (6) pushes the injection molding material to the outlet (5).

2. The injection molding equipment for plastic production according to claim 1, characterized in that: The drive structure (8) includes a No. 1 motor (81) fixed to the right end of the mounting frame (7) and a hydraulic cylinder (82) fixed to the upper end of the mounting frame (7); the output end of the No. 1 motor (81) extends movably through the inner side of the mounting frame (7) and is fixedly connected to a transmission sleeve (84); the left end of the transmission sleeve (84) is inserted and connected to a transmission column (85); the left end of the transmission column (85) is fixedly connected to a drive ring (831); the middle of the left end of the drive ring (831) is coaxially fixed to a connecting column (83); the left end of the connecting column (83) is fixedly connected to a baffle (832); the feeding screw (6) is fixed to the left end of the baffle (832); the output end of the hydraulic cylinder (82) is fixedly connected to a push-pull bracket (86); the push-pull bracket (86) extends into the mounting frame (7) and is movably sleeved on the drive ring (831).

3. The injection molding equipment for plastic production according to claim 2, characterized in that: The transmission sleeve (84) and the transmission column (85) form an interlocking structure. The transmission column (85) rotates coaxially with the rotation of the transmission sleeve (84). The transmission column (85) moves left and right relative to the transmission sleeve (84) as the push-pull frame (86) moves left and right. The baffle (832) is movably embedded in the left end of the mounting frame (7). The baffle (832) is a circular plate, and the diameter of the baffle (832) is consistent with the inner diameter of the machine body (1).

4. The injection molding equipment for plastic production according to claim 3, characterized in that: The feeding structure (9) includes a feeding hopper (91), a base (92) is fixedly connected to the inner side of the feeding hopper (91), a second motor (93) is fixedly connected to the upper middle part of the base (92), the output end of the second motor (93) extends movably through to the lower part of the base (92) and is fixedly connected to a drive shaft (931), a stirring shaft (94) is inserted and fixedly connected to the drive shaft (931), the stirring shaft (94) is horizontally arranged, and two first stirring plates (97) are inserted and fixedly connected to the stirring shaft (94), the two first stirring plates (97) are respectively located on both sides of the drive shaft (931); a feeding plate (99) is fixedly connected to the lower end of the drive shaft (931), and the feeding plate (99) is inclined.

5. The injection molding equipment for plastic production according to claim 4, characterized in that: Two sleeves (96) are movably sleeved on the stirring shaft (94). The two sleeves (96) are located on both sides of the transmission shaft (931). The outer sides of the two sleeves (96) abut against the inner sides of the two first stirring plates (97). Second stirring plates (98) are inserted and fixedly connected to the circumferential sides of the two sleeves (96). Second bevel gears (961) are fixedly connected to the inner sides of the two sleeves (96). A first bevel gear (951) is sleeved on the transmission shaft (931). The first bevel gear (951) meshes with the upper sides of the two second bevel gears (961).

6. The injection molding equipment for plastic production according to claim 5, characterized in that: The upper end of the first bevel gear (951) is fixedly connected to a connecting pipe (95), which is fixed to the lower end of the base (92). Both second bevel gears (961) are movably sleeved on the stirring shaft (94).

7. The injection molding equipment for plastic production according to claim 6, characterized in that: The connecting pipe (95) is sleeved on the transmission shaft (931), and both the connecting pipe (95) and the first bevel gear (951) are spaced apart from the transmission shaft (931).

8. The injection molding equipment for plastic production according to claim 7, characterized in that: A second connecting flange (31) is fixedly connected to the upper part of the peripheral side of the hopper (3), and a third connecting flange (911) is fixedly connected to the peripheral side of the guide hopper (91). The third connecting flange (911) is fixed to the upper end of the second connecting flange (31) by bolts.

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