Detachable breathable charging barrel of plastic machine
By designing T-shaped breathable parts and connecting grooves in the plastic barrel, the problem of plastic flow out in the traditional plastic barrel is solved, which improves the dehumidification effect and production efficiency and reduces costs.
Patent Information
- Application Number
- CN202420878672.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The open exhaust holes of traditional plastic machine barrels cause plastics to easily flow out during transmission, causing problems such as waste of raw materials and waste of production time.
A detachable breathable barrel is designed, using a hollow barrel body with an internal cavity, equipped with breathable parts and a connecting groove. The cross-section of the breathable parts is T-shaped, the screw is fixed to the barrel through a threaded hole, and the breathable parts and screw side are Arc shape ensures that steam is discharged through the exhaust hole, reduces plastic outflow, and improves dehumidification effect.
It effectively reduces the possibility of plastic flowing out through the exhaust hole, improves the dehumidification effect, facilitates the replacement and installation of breathable parts, and reduces production costs and waste.
Smart Images
Figure CN222135843U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic machines, in particular to a detachable air-permeable barrel of a plastic machine. Background Art
[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes of thermoplastics or thermosetting materials. With the acceleration of the pace of modernization, plastic machines have been widely used in various sectors of the national economy and various fields of people's lives, such as construction, packaging, electrical and electronic equipment, agriculture, automobiles, transportation, light industry, petrochemical industry, machinery industry, and national defense industry, showing an extremely important role.
[0003] Injection molding and extrusion molding are important plastic processing methods. During the molding process, plastic particles or powders are usually put into the barrel from the hopper. The outer wall of the traditional barrel is provided with a heating plate, and the barrel is provided with a screw that can slide along the barrel. The screw transports the plastic particles to the front section of the barrel by rotation, and the barrel is heated by the heating plate to raise its temperature to the melting temperature of the plastic. The rotation of the screw continuously delivers the molten plastic to the head of the barrel. The pressure of the head makes the screw move backward. When the screw retreats to a certain distance, the backward thrust reaches the back pressure set by the hydraulic cylinder, and the screw stops rotating. Then the hydraulic cylinder drives the screw, and the screw acts as a plunger to inject the molten plastic in the barrel into the mold cavity of the mold.
[0004] Under conditions of high temperature and high pressure, the moisture in the plastic particles is converted into gas during the transmission process. In recent years, the exhaust barrels developed by the plastic machinery industry have all been equipped with open exhaust holes. However, in actual production, open exhaust holes are prone to cause plastic to flow out of the exhaust holes, resulting in waste of raw materials and factory production time. Utility Model Content
[0005] 1. Technical issues to be solved
[0006] In view of the deficiencies in the prior art, the utility model provides a detachable breathable barrel for a plastic machine, which solves the problem that during the transmission process of the prior barrel, plastic flows out from the open exhaust holes, thereby reducing the dehumidification effect of the structure.
[0007] (II) Technical solution
[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detachable breathable barrel of a plastic machine, comprising a barrel body with a hollow inner cavity, a mounting seat fixed at one end of the barrel body, and a nozzle connected to the inner cavity of the barrel body fixed at the other end, a discharge port connected to the inner cavity of the barrel body radially opened at one end of the barrel body close to the mounting seat, a screw adapted to the inner cavity of the barrel body and used for conveying materials is rotatably connected to the middle position of the inner cavity of the barrel body, two connecting grooves arranged oppositely and connected to the inner cavity of the barrel body are opened on the outer wall of the barrel body for discharging steam from the inner cavity of the barrel body, and a breathable member is placed in the connecting groove.
[0009] Through the above technical solution, the plastic raw material enters the inner cavity of the barrel body from the feeding port, and the screw transmits and feeds the plastic raw material while rotating, so that the plastic raw material moves toward the nozzle. During the transmission process, the steam in the inner cavity of the barrel body passes through the air permeable part and is discharged from the barrel body, and the plastic raw material is injected into the mold through the nozzle to form a plastic product. By setting the air permeable part, the plastic raw material cannot pass through the air permeable part because the structural diameter is larger than the air hole diameter of the air permeable part, thereby reducing the possibility that the plastic raw material is discharged from the barrel body through the connecting groove and affects the dehumidification effect of the device.
[0010] Preferably, the cross section of the air permeable member is T-shaped, the side of the air permeable member facing the screw is arc-shaped, and the side of the air permeable member facing the screw is flush with the inner cavity groove wall of the barrel body.
[0011] Through the above technical solution, the cross-section of the air-permeable piece is T-shaped. After the air-permeable piece is inserted into the connecting groove, it will not fall off the connecting groove, and the air-permeable piece is flush with the inner cavity groove wall of the barrel body facing the screw side, which does not affect the transmission of the plastic raw material passing through the air-permeable piece.
[0012] Preferably, a mounting groove connected to the connecting groove is provided on the circumferential outer wall of the barrel body, the center line of the mounting groove coincides with the center line of the connecting groove, the size of the mounting groove is larger than the size of the air permeable groove, a cover plate for closing the mounting groove is placed on the mounting groove, the cover plate is in contact with the end of the air permeable member, and an exhaust hole connected to the connecting groove for exhausting gas is provided in the middle position of the cover plate.
[0013] Through the above technical solution, by placing a cover plate on the installation groove, the possibility of the air-permeable member escaping from the barrel body is reduced, while the discharge of steam through the exhaust hole after passing through the air-permeable member is not affected.
[0014] Preferably, a ventilation groove communicating with the exhaust hole is provided on the side of the ventilation member facing the exhaust hole.
[0015] Through the above technical solution, by providing the air permeable groove, the steam passing through the air permeable member is concentrated in the air permeable groove and discharged from the barrel body through the exhaust hole.
[0016] Preferably, a plurality of threaded holes are evenly arranged at the bottom of the mounting groove, and a socket adapted to the threaded hole is arranged on the cover plate, a screw is passed through the socket, one end of the screw passes through the cover plate, and one end of the screw passing through the cover plate enters the threaded hole and is threadedly connected to the barrel body.
[0017] Through the above technical solution, the cover plate and the barrel body are detachably fixedly connected through the cooperation of screws and threaded holes, thereby reducing the possibility of the air-permeable part falling off the barrel body and facilitating the assembly and replacement of the air-permeable part.
[0018] Preferably, one end of the screw passes through the barrel body and is rotatably connected to the barrel body, the part of the screw passing through the barrel body passes through the mounting seat and is rotatably connected to the mounting seat, the part of the screw passing through the mounting seat is coaxially fixed with a mounting handle, the nozzle is fixed to the barrel body through a flange, and a rocket head is coaxially fixed to the other end of the screw, the rocket head passes through the flange and enters the nozzle, and the outer side wall of the rocket head is provided with a sealing ring and a sealing pad for closing the gap between the outer side wall of the rocket head and the inner cavity of the barrel body.
[0019] Through the above technical solution, the rotation of the screw provides power to convey the plastic raw material. By setting the rocket head, the plastic raw material can be easily moved from the gap between the rocket head and the screw toward the nozzle. By setting the sealing ring and the sealing pad, the leakage of the plastic raw material from the gap between the rocket head and the barrel body can be reduced.
[0020] Preferably, a cooling water ring is sleeved on the circumferential outer wall of the barrel body, wherein one connecting groove is close to the cooling water ring and the other is located in the middle section of the barrel body.
[0021] Through the above technical solution, the moisture in the plastic raw material entering the barrel body is converted into steam after being subjected to high temperature and high pressure. After passing through the first connecting groove, part of the steam passes through the air permeable part and is discharged from the barrel body. The plastic raw material moves toward the second connecting groove. The screw has a larger feeding space in the middle, which can release the compressed moisture in the plastic for a second time and discharge it through the second air permeable part, and then compress and homogenize it again. By setting a secondary moisture evaporation and exhaust structure, the dehumidification effect of the device is improved.
[0022] (III) Beneficial effects
[0023] The utility model provides a detachable air-permeable barrel for a plastic machine, which has the following beneficial effects:
[0024] (1) In the detachable breathable barrel of the plastic machine, the plastic raw material enters the inner cavity of the barrel body from the feeding port, and the screw is rotated to transport and feed the plastic raw material, so that the plastic raw material moves toward the nozzle. During the transmission process, the steam in the inner cavity of the barrel body passes through the breathable part and is discharged from the barrel body, and the plastic raw material is injected into the mold through the nozzle to form a plastic product. By setting the breathable part, the plastic raw material cannot pass through the breathable part because the structural diameter is larger than the diameter of the breathable hole of the breathable part, thereby reducing the possibility that the plastic raw material is discharged from the barrel body through the connecting groove and affects the dehumidification effect of the device.
[0025] (2) The detachable breathable barrel of the plastic machine is provided with a cover plate on the mounting groove, thereby reducing the possibility of the breathable part falling out of the barrel body, while not affecting the discharge of steam through the exhaust hole after passing through the breathable part. The cover plate and the barrel body are detachably fixedly connected by screws and threaded holes, which facilitates the assembly and replacement of the breathable part and reduces costs.
[0026] (3) The detachable breathable barrel of the plastic machine has two breathable parts arranged along the moving direction of the plastic raw material. The plastic raw material entering the barrel body is compressed and homogenized by the screw. The moisture in the plastic raw material is converted into steam after being subjected to high temperature and high pressure. After passing through the first breathable part, the steam passes through the breathable part and is discharged from the barrel body. The plastic raw material continues to move toward the second breathable part and is compressed and homogenized again. The converted steam is discharged through the second breathable part, thereby improving the dehumidification effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0028] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;
[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of the ventilation member of the utility model in side view.
[0030] In the figure: 1. barrel body; 2. mounting seat; 3. nozzle; 4. discharge port; 5. screw; 6. connecting groove; 7. breathable part; 8. mounting groove; 9. cover plate; 10. exhaust hole; 11. breathable groove; 12. threaded hole; 13. screw; 14. mounting handle; 15. flange; 16. rocket head; 17. sealing ring; 18. sealing pad; 19. cooling water ring. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] like Figure 1-3 As shown, the utility model provides a technical solution: a detachable breathable barrel of a plastic machine, comprising a barrel body 1 with a hollow inner cavity, a mounting seat 2 is fixed at one end of the barrel body 1, and a nozzle 3 connected to the inner cavity of the barrel body 1 is fixed at the other end, a discharge port 4 connected to the inner cavity of the barrel body 1 is radially opened at one end of the barrel body 1 close to the mounting seat 2, a screw 5 adapted to the inner cavity of the barrel body 1 and used for transmitting materials is rotatably connected to the middle position of the inner cavity of the barrel body 1, one end of the screw 5 passes through the barrel body 1 and is rotatably connected to the barrel body 1, the part of the screw 5 passing through the barrel body 1 passes through the mounting seat 2 and is rotatably connected to the mounting seat 2, the part of the screw 5 passing through the mounting seat 2 is coaxially fixed with a mounting handle 14, and an electronic component for driving the screw 5 to rotate is provided on the injection molding machine. This is a prior art, so it will not be described in detail here.
[0033] like Figure 1 and Figure 2 The nozzle 3 is fixed to the barrel body 1 through a flange 15, and a rocket head 16 is coaxially fixed to the other end of the screw 5. The rocket head 16 passes through the flange 15 and enters the nozzle 3. The rocket head 16 is rotatably connected to the barrel body 1. The outer wall of the rocket head 16 is provided with a sealing ring 17 and a sealing pad 18 for sealing the gap between the outer wall of the rocket head 16 and the inner cavity of the barrel body 1.
[0034] like Figure 1 and Figure 2 The plastic raw material enters the inner cavity of the barrel body 1 from the discharge port 4, and the power element provides power to drive the screw 5 to rotate. While the screw 5 rotates, it will transport and feed the plastic raw material, so that the plastic raw material moves toward the nozzle 3. During the transmission process, the steam in the inner cavity of the barrel body 1 passes through the air permeable member 7 and is discharged from the barrel body 1. The plastic raw material moves toward the nozzle 3 through the gap between the rocket head 16 and the screw 5, and is injected into the mold through the nozzle 3 to form a plastic product. By setting the air permeable member 7, the plastic raw material cannot pass through the air permeable member 7 because the structural diameter is larger than the air permeable hole diameter of the air permeable member 7, thereby reducing the possibility that the plastic raw material is discharged from the barrel body 1 through the connecting groove 6 and affects the dehumidification effect of the device. By setting the sealing ring 17 and the sealing pad 18, the sealing performance of the device is improved.
[0035] like Figure 1 and Figure 2 and Figure 3The air-permeable member 7 is specifically made of air-permeable steel, air-permeable copper or other porous materials that allow water to pass through but do not allow plastic raw materials to pass through.
[0036] like Figure 3 The cross section of the air-permeable member 7 is T-shaped, and the side of the air-permeable member 7 facing the screw 5 is arc-shaped. The side of the air-permeable member 7 facing the screw 5 is flush with the inner cavity groove wall of the barrel body 1. The cross section of the air-permeable member 7 is T-shaped. After the air-permeable member 7 is inserted into the connecting groove 6, it will not fall off the connecting groove 6, which is convenient for positioning the air-permeable member 7. The side of the air-permeable member 7 facing the screw 5 is flush with the inner cavity groove wall of the barrel body 1, which does not affect the transmission of the plastic raw material passing through the air-permeable member 7. At the same time, the screw teeth of the screw 5 can continuously rub the inner wall of the air-permeable member 7 during rotation, which can effectively improve the water permeability in the plastic raw material.
[0037] like Figure 1 and Figure 2 and Figure 3 The size of the air-permeable member 7 is determined by the size of the barrel body 1 , and the design parameters of the air-permeable member 7 are determined by the requirement for water to pass through the air-permeable member 7 .
[0038] like Figure 1 and Figure 2 A mounting groove 8 connected to the connecting groove 6 is provided on the circumferential outer wall of the barrel body 1. The center line of the mounting groove 8 coincides with the center line of the connecting groove 6. The size of the mounting groove 8 is larger than the size of the air-permeable groove 11. A cover plate 9 for closing the mounting groove 8 is placed on the mounting groove 8. The cover plate 9 is in conflict with the end of the air-permeable member 7. An exhaust hole 10 connected to the connecting groove 6 for exhausting gas is provided in the middle of the cover plate 9.
[0039] like Figure 2 and Figure 3 By placing the cover plate 9 on the mounting groove 8, the possibility of the air-permeable member 7 falling out of the barrel body 1 is reduced, while the discharge of steam through the air-permeable member 7 and through the exhaust hole 10 is not affected.
[0040] like Figure 1 and Figure 2 The exhaust hole 10 is connected to a vacuum pump or other exhaust gas treatment equipment to improve the dehumidification effect.
[0041] like Figure 3 A ventilation groove 11 connected to the exhaust hole 10 is provided on the side of the ventilation member 7 facing the exhaust hole 10. By providing the ventilation groove 11, the steam passing through the ventilation member 7 is concentrated in the ventilation groove 11 and then discharged from the barrel body 1 through the exhaust hole 10, thereby improving the dehumidification effect of the device.
[0042] like Figure 1 and Figure 2As shown in the figure, a plurality of threaded holes 12 are evenly arranged at the bottom of the mounting groove 8, and a socket adapted to the threaded hole 12 is arranged on the cover plate 9, and a screw 13 is passed through the socket, and one end of the screw 13 passes through the cover plate 9, and one end of the screw 13 passes through the cover plate 9 and enters the threaded hole 12 and is threadedly connected to the barrel body 1. The cover plate 9 and the barrel body 1 are detachably fixedly connected through the cooperation of the screw 13 and the threaded hole 12, thereby reducing the possibility of the air permeable part 7 falling off from the barrel body 1, and facilitating the assembly and replacement of the air permeable part 7.
[0043] like Figure 1 and Figure 2 A cooling water ring 19 is sleeved on the circumferential outer wall of the barrel body 1, one of the connecting grooves 6 is close to the cooling water ring 19, and the other is located in the middle section of the barrel body 1. Along the moving direction of the plastic raw material, the air permeable member 7 close to the cooling water ring 19 is the first air permeable member 7, and the first air permeable member 7 is located on the side of the cooling water ring away from the mounting seat 2.
[0044] like Figure 1 The moisture in the plastic raw material entering the barrel body 1 is transformed into steam after being subjected to high temperature and high pressure. After passing through the first connecting groove 6, the steam passes through the air-permeable member 7 and is discharged from the barrel body 1. The plastic raw material moves toward the second connecting groove 6, and is compressed and homogenized again. The converted steam is discharged through the second air-permeable member 7. The two air-permeable members 7 are arranged along the moving direction of the plastic raw material, which improves the dehumidification effect of the device and indirectly reduces the number of replacement cycles of the air-permeable member 7, thereby achieving the purpose of improving production efficiency.
[0045] When in use, the power is turned on, the switch is turned on, and the plastic raw material enters the inner cavity of the barrel body 1 from the feed port 4. The power is provided by a power element such as a servo motor to drive the screw 5 to rotate. The rotation of the screw 5 will drive the plastic raw material to move toward the nozzle 3. The plastic raw material passes through the rocket head 16 and enters the nozzle 3. It is injected into the mold through the nozzle 3 to form a plastic product.
[0046] The plastic raw material is constantly pressurized during the transmission process, and the water content of the plastic raw material is converted into steam under high temperature and high pressure. When the steam passes through the first air-permeable member 7, it enters the air-permeable groove 11 through the air-permeable member 7, and then is discharged from the barrel body 1 through the exhaust groove. The plastic raw material cannot pass through the air-permeable member 7 because its structural diameter is larger than the air hole diameter of the air-permeable member 7. The plastic raw material moves toward the second air-permeable member 7, and is compressed and homogenized again. The converted steam is discharged through the second air-permeable member 7. The two air-permeable members 7 are arranged along the moving direction of the plastic raw material, thereby improving the dehumidification effect of the device.
[0047] After the device has been used for a period of time, the screws 13 are removed, the cover plate 9 is taken out, and the breathable part 7 is replaced and cleaned to increase the service life of the device and save costs. This is the use process of the detachable breathable barrel of the plastic machine. At the same time, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A detachable air-permeable barrel for a plastic machine, comprising a barrel body (1) with a hollow inner cavity, characterized in that: A mounting seat (2) is fixed at one end of the barrel body (1), and a nozzle (3) connected to the inner cavity of the barrel body (1) is fixed at the other end. A discharge port (4) connected to the inner cavity of the barrel body (1) is radially opened at one end of the barrel body (1) close to the mounting seat (2). A screw (5) adapted to the inner cavity of the barrel body (1) and used for conveying materials is rotatably connected to the middle position of the inner cavity of the barrel body (1). Two connecting grooves (6) arranged opposite to each other and connected to the inner cavity of the barrel body (1) are opened on the outer wall of the barrel body (1) for discharging steam from the inner cavity of the barrel body (1). A breathable member (7) is placed in the connecting groove (6).
2. A detachable air-permeable barrel for a plastic machine according to claim 1, characterized in that: The cross section of the air permeable member (7) is T-shaped, the side of the air permeable member (7) facing the screw (5) is arc-shaped, and the side of the air permeable member (7) facing the screw (5) is flush with the inner cavity groove wall of the barrel body (1).
3. A detachable air-permeable barrel for a plastic machine according to claim 1, characterized in that: The barrel body (1) has a mounting groove (8) on its circumferential outer wall, the mounting groove (8) being larger than the vent groove (11). A cover plate (9) is placed on the mounting groove (8) to close the mounting groove (8). The cover plate (9) contacts the end of the vent member (7). An exhaust hole (10) is provided in the middle of the cover plate (9) and is connected to the connecting groove (6) for exhausting gas.
4. A detachable air-permeable barrel for a plastic machine according to claim 3, characterized in that: The air permeable member (7) is provided with an air permeable groove (11) on the side facing the air exhaust hole (10) and communicating with the air exhaust hole (10).
5. A detachable air-permeable barrel for a plastic machine according to claim 3, characterized in that: The bottom of the mounting groove (8) is evenly provided with a plurality of threaded holes (12); the cover plate (9) is provided with a socket adapted to the threaded hole (12); a screw (13) is inserted into the socket; one end of the screw (13) passes through the cover plate (9); one end of the screw (13) passes through the cover plate (9) and enters the threaded hole (12) and is threadedly connected to the barrel body (1).
6. A detachable air-permeable barrel for a plastic machine according to claim 1, characterized in that: One end of the screw rod (5) passes through the barrel body (1) and is rotatably connected to the barrel body (1); the portion of the screw rod (5) passing through the barrel body (1) passes through the mounting seat (2) and is rotatably connected to the mounting seat (2); the portion of the screw rod (5) passing through the mounting seat (2) is coaxially fixed with a mounting handle (14); the nozzle (3) is fixed to the barrel body (1) via a flange (15); a rocket head (16) is coaxially fixed to the other end of the screw rod (5); the rocket head (16) passes through the flange (15) and enters the nozzle (3); the outer wall of the rocket head (16) is provided with a sealing ring (17) and a sealing pad (18) for sealing the gap between the outer wall of the rocket head (16) and the inner cavity of the barrel body (1).
7. A detachable air-permeable barrel for a plastic machine according to claim 1, characterized in that: The outer circumferential wall of the barrel body (1) is sleeved with a cooling water ring (19), one of the connecting grooves (6) is close to the cooling water ring (19), and the other is located in the middle section of the barrel body (1).