Injection molding raw material filtering device

Abstract

The utility model provides an injection molding raw material filtering device, which relates to the technical field of plastic processing, and comprises a shell, the shell is fixedly arranged, an inclined filtering cavity is arranged in the shell, the higher end and the lower end of the filtering cavity are respectively provided with a feed port and a discharge port which are communicated with the inside and the outside of the shell, and the filtering cavity is communicated with the discharge port through a blanking pipe. A filter cartridge is rotatably arranged in the filter cavity, an air blowing mechanism is arranged on one side of the discharging pipe, and a slag outlet hole is formed in the side, opposite to the discharging pipe, of the air blowing mechanism. Large-size impurities can continuously move towards the bottom end of the filter cartridge under the impact action of the gravity of the impurities and the plastic particles and are finally separated from the filter holes, so that a self-blockage-clearing function is realized, the problems that the filtering device is easily blocked and the filtering effect is influenced are solved, the working efficiency is greatly improved, and the practicability is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, in particular to an injection molding raw material filtering device. Background Art

[0002] In the process of plastic product processing, the plastic raw materials are usually melted by an injection molding machine, and then high pressure is applied to the molten plastic to fill the mold, thereby making plastic products of various shapes. The raw materials of plastic products are generally plastic particles, which are usually purchased from outside. During the transportation, handling and storage process, some impurities will inevitably be mixed into the plastic particles. If these impurities are not treated, the impurities will have a huge impact on the final quality of the plastic products.

[0003] The existing method for dealing with impurities in plastic particles is usually to set up a metal mesh or other filtering device at the feed port of the injection molding machine to perform preliminary screening of the impurities. This preliminary screening is not fine enough and can only block impurities with a diameter larger than the plastic particles. However, for smaller impurities, the expected filtering effect cannot be achieved. When these smaller impurities enter the injection molding machine, black spots, bubbles or other defects will appear on the product surface.

[0004] The Chinese utility model patent with document number CN220548533U discloses a plastic particle screening filter, including a base, an upper surface of the base is fixedly mounted with an inclined material conveying sleeve, the feed end of the conveying sleeve is fixedly connected with a delivery bucket, a screening and filtering mechanism is arranged above the material conveying sleeve, and the screening and filtering mechanism includes a vacuum suction pump. When the plastic particles roll into the inside of the material conveying sleeve through the delivery bucket under the action of their own gravity, the plastic particles are screened and filtered by the vacuum suction pump. The plastic particle screening filter has the effect of achieving double screening and filtering of impurities in the plastic particles by setting the screening and filtering mechanism, and has the effect of thoroughly filtering the impurities in the plastic particles. At the same time, through the cooperation of the collection box and the impurity collecting frame of the collection frame, the screened impurities are automatically collected, thereby greatly improving the screening efficiency and accuracy, and reducing the labor intensity of the operator.

[0005] However, when the above-mentioned device is working, the plastic particles roll to the bottom of the feed sleeve under the action of their own gravity, and then are extracted by the vacuum pump to achieve screening and filtering of the plastic particles. However, the filter sleeve and the receiving frame are connected, and the plastic particles can freely enter the receiving frame, blocking the filter sleeve. When the vacuum pump extracts the plastic particles, it cannot effectively extract the plastic particles in the filter sleeve that are lower than the extraction pipe. The blockage will affect the falling effect of impurities and ultimately destroy the screening and separation effect. At the same time, although the arc filter can filter impurities smaller than plastic particles, the vacuum pump may still extract larger and lighter impurities, such as hair, paper scraps, etc., to one side of the arc filter, thereby clogging the filter and ultimately affecting the filtering effect. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides an injection molding raw material filtering device, which solves the problem that the filtering device in the prior art is prone to clogging, thereby affecting the filtering effect.

[0007] According to an embodiment of the utility model, an injection molding raw material filtering device comprises a housing, the housing is fixedly arranged, an inclined filtering chamber is arranged in the housing, a feed port and a discharge port communicating with the inside and outside of the housing are respectively arranged at the higher end and the lower end of the filtering chamber, and the filtering chamber and the discharge port are also connected through a feeding pipe;

[0008] A filter cartridge, wherein a plurality of filter holes are arranged on the wall of the filter cartridge, the filter cartridge is rotatably arranged in the filter cavity, and both ends of the filter cartridge are connected with the feed port and the discharge port;

[0009] The blower mechanism is arranged on one side of the material discharge pipe, a slag discharge hole is arranged on the opposite side of the material discharge pipe of the blower mechanism, and a slag collecting cavity is connected to the outside of the slag discharge hole.

[0010] The technical principle of the utility model is: when plastic particles enter the filter cartridge from the feed inlet, due to the inclined setting of the filter cartridge, as the bottom surface of the filter cartridge rolls downward, impurities with a diameter smaller than the aperture of the filter hole will fall out of the filter cartridge to achieve preliminary separation; as the filter cartridge continues to rotate, impurities with a diameter larger than the aperture of the filter hole will continue to move toward the bottom of the filter cartridge under the impact of their own gravity and the plastic particles, and eventually detach from the filter hole to achieve self-clearing function; impurities with larger volume and lighter mass that fall into the discharge pipe will be blown into the slag discharge hole on the opposite side by the blower mechanism to achieve secondary separation, thereby efficiently completing the separation and filtration action of impurities of different volumes; the device is not easy to be blocked and can be automatically cleared, thereby solving the problem that the filter device in the prior art is prone to blockage, thereby affecting the filtering effect.

[0011] Furthermore, the two ends of the filter cartridge are respectively surrounded by a protruding first limiting ring and a second limiting ring, and the higher end and the lower end of the filter cavity are respectively surrounded by a first installation groove and a second installation groove for the first limiting ring and the second limiting ring to be embedded.

[0012] Furthermore, an inclined slag guiding groove is provided at the bottom of the filter chamber, and the bottom end of the slag guiding groove is communicated with the slag collecting chamber.

[0013] Furthermore, a brush is provided in the filter cavity, and a plurality of bristles are provided at one end of the brush close to the filter cartridge, and the bristles extend toward the filter cartridge into the filter hole.

[0014] Furthermore, a driving assembly is arranged on the shell, a driving gear is rotatably connected to the driving assembly, the driving gear is meshed with a driven gear, and the driven gear is arranged around the outer wall of the filter cartridge.

[0015] Furthermore, the driving assembly includes a driving motor, a driving shaft of the driving motor is inserted into the housing, and a terminal end of the driving shaft is fixedly connected to the driving gear.

[0016] Furthermore, the blowing mechanism includes a blower, and an air outlet pipe of the blower is directly opposite to the slag discharge hole.

[0017] Furthermore, a baffle plate with a convex curved surface extends from the lower edge of the slag discharge hole toward the slag collecting chamber.

[0018] Furthermore, the shell is provided with an opening at one side of the slag collecting chamber, a slag collecting box is slidably arranged in the opening, and a handle is fixed on the outer side of the slag collecting box.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. By setting an inclined filter cartridge, the filter cartridge wall is provided with a number of filter holes with a smaller aperture than the plastic particles. During the feeding process of the plastic particles, it can efficiently filter the impurities with a smaller volume, thereby completing the preliminary separation of the plastic particles and the small-volume impurities.

[0021] 2. By rotating the filter cartridge, some impurities with a volume equal to or larger than the filter hole diameter can be gradually moved to the bottom of the filter cartridge. When impurities block the filter holes, the impurities will continue to switch in the process of being affected by their own gravity and the impact of plastic particles as the filter cartridge rotates, and finally detach from the filter holes, realizing the self-clearing function, which solves the problem in the prior art that the filter device is prone to blockage, thereby affecting the filtering effect.

[0022] 3. By setting a blower mechanism in the discharge pipe, the plastic particles and impurities can be blown into the slag discharge hole on the opposite side when they fall, thereby completing the secondary separation of the plastic particles and the impurities with larger volume and lighter mass. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0024] Figure 2 It is a schematic diagram of the side sectional structure of the shell of an embodiment of the utility model.

[0025] Figure 3 This is a schematic diagram of the structure of location A of an embodiment of the utility model.

[0026] Figure 4 It is a schematic diagram of the overall structure of the external structure of an embodiment of the utility model.

[0027] Figure 5 This is a schematic diagram of the structure of location B of an embodiment of the utility model.

[0028] Figure 6 This is a schematic diagram of the structure of location C of an embodiment of the present utility model.

[0029] In the above drawings: 1. shell; 11. feed port; 12. filter chamber; 121. first mounting slot; 122. second mounting slot; 123. slag chamber; 124. slag guide slot; 125. slag collecting chamber; 126. reduced diameter duct; 13. feed pipe; 131. slag discharge hole; 132. air outlet; 133. baffle plate; 14. support seat; 15. base; 16. feed seat; 17. feed port; 18. reinforcing rib; 19. blast chamber; 191. air inlet; 2. filter cartridge; 21. first limiting ring; 22. second limiting ring; 23. filter hole; 24. driven gear; 3. drive motor; 31. drive shaft; 32. drive gear; 4. blower; 41. blower motor; 42. air outlet pipe; 5. slag collecting box; 51. handle; 6. brush; 61. bristles. DETAILED DESCRIPTION

[0030] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 As shown, an embodiment of the utility model proposes an injection molding raw material filtering device, including a shell 1, the shell 1 is in an inclined cylindrical shape, the shell 1 is fixedly arranged, a base 15 is arranged at the bottom of the shell 1, the shell 1 and the base 15 are fixedly connected by a support seat 14, and a plurality of triangular reinforcing ribs 18 are fixedly arranged at the connection between the support seat 14 and the base 15.

[0032] like Figure 2 As shown, an inclined filter chamber 12 is provided in the housing 1, and the filter chamber 12 is preferably cylindrical. The higher end and the lower end of the filter chamber 12 are respectively provided with a feed port 11 and a discharge port 17 communicating with the inside and outside of the housing 1. The filter chamber 12 is connected to the discharge port 17 through a vertically arranged feed pipe 13. In order to better gather and collect the plastic particles, the diameter of the feed pipe 13 is smaller than that of the filter chamber 12, so a reduction conduit 126 for transition is provided between the two, and the reduction conduit 126 is provided between the two. The outside of the diameter conduit 126 is wrapped by the discharge seat 16, and the discharge port 17 adopts a pipe diameter consistent with the lower end of the discharge pipe 13 and is horizontally arranged to facilitate the collection of plastic particles. The filter chamber 12 also includes a lower slag chamber 123, which runs through the lower part of the filter chamber 12, and an inclined slag guide groove 124 is arranged at the bottom of the lower slag chamber 123. The bottom end of the slag guide groove 124 is connected to the slag collecting chamber 125, so that small-volume impurities filtered out by the filter cartridge 2 can be concentrated in the slag collecting chamber 125 for unified treatment.

[0033] like Figure 2 , 4 and Figure 5As shown, an injection molding raw material filtering device proposed by the utility model also includes a filter cartridge 2, on which a plurality of filter holes 23 with diameters smaller than those of the plastic particles are arranged, the filter cartridge 2 is rotatably arranged in the filter chamber 12, and the two ends of the filter cartridge 2 are connected with the feed port 11 and the discharge port 17. In order to better fix the filter cartridge 2, the two ends of the filter cartridge 2 are respectively surrounded by a protruding first limiting ring 21 and a second limiting ring 22, and the higher end and the lower end of the filter chamber 12 are respectively surrounded by a first mounting groove 121 and a second mounting groove 122 for the first limiting ring 21 and the second limiting ring 22 to be embedded, and the first limiting ring 21 and the second limiting ring 22 can be inserted in the first limiting ring 21 and the second limiting ring 22. A mounting groove 121 and a second mounting groove 122 can rotate freely but cannot move up and down. At the same time, a driving assembly is arranged on the outer shell 1. A driving gear 32 is rotatably connected to the driving assembly. The driving gear 32 is meshed with a driven gear 24. The driven gear 24 is fixedly arranged on the outer wall of the filter cartridge 2. The driving gear 32 and the driven gear 24 can be selected as bevel gears or spur gears. In the present embodiment, spur gears are selected. The driving assembly includes a driving motor 3, so the direction of the driving motor 3 is parallel to the filter cartridge 2. The driving shaft 31 of the driving motor 3 is inserted and fixed on the outer shell 1, and the end of the driving shaft 31 is fixedly connected to the driving gear 32. According to another embodiment, in order to further prevent the filter cartridge 2 from being blocked, a brush 6 is provided in the filter chamber 12. The brush 6 can be provided at the top of the filter chamber 12. A plurality of bristles 61 are provided at one end of the brush 6 close to the filter cartridge 2. The bristles 61 extend into the filter hole 23 toward the filter cartridge 2. When the filter cartridge 2 rotates, the bristles 61 can clear the blockage of the filter cartridge 2.

[0034] like Figure 2 , 3 and Figure 6 As shown, the injection molding raw material filtering device proposed by the utility model also includes a blower mechanism, which is arranged on one side of the feed pipe 13. To facilitate the collection of impurities, a slag discharge hole 131 is preferably arranged on the side away from the slag collecting chamber 125. The slag discharge hole 131 is connected to the slag collecting chamber 125. Impurities with larger volume and lighter weight can be blown into the slag collecting chamber 125 through the slag discharge hole 131 by the blower mechanism, so that the impurities separated initially and secondarily are concentrated in the slag collecting chamber 125 for unified treatment. Preferably, the blower mechanism includes a blower 4, which includes a body, a blower motor 41, an air inlet pipe and an air outlet pipe 42, as shown in FIG. Figure 2As shown, the unloading seat 16 is provided with a blast chamber 19 of the same shape as the blower 4, which is used for installing and fixing the blower 4. An air inlet hole 191 is provided on one side of the blast chamber 19, which is used for embedding and fixing the air inlet pipe of the blower 4. An opening for fixing and dissipating heat for the blower motor 41 is provided on the other side of the blast chamber 19. The blast chamber 19 is provided with an air outlet hole 132 at a position directly opposite to the slag discharge hole 131. The air outlet pipe 42 of the blower 4 is fixed in the air outlet hole 132 to ensure that the air outlet pipe 42 is directly opposite to the slag discharge hole 131, thereby ensuring a better blowing effect. In order to prevent the plastic particles from being accidentally blown into the slag collection chamber 125, a convex curved baffle plate 133 is extended from the lower edge of the slag discharge hole 131 toward one side of the slag collection chamber 125, which can effectively block the plastic particles and make them roll back into the unloading pipe 13.

[0035] like Figure 1 , Figure 2 and Figure 6 As shown, the shell 1 is further provided with an opening on one side of the slag collecting chamber 125, and a slag collecting box 5 is slidably arranged in the opening. A handle 51 is fixed to the outer side of the slag collecting box 5, and the slag collecting box 5 can be taken out by pulling the handle 51 to clean the impurities in the box.

[0036] The detailed working process of this embodiment is as follows: when the plastic particles enter the filter cartridge 2 from the feed port 11, due to the inclination angle of the filter cartridge 2, as the bottom surface of the filter cartridge 2 rolls downward, impurities with a diameter smaller than the aperture size of the filter hole 23 will fall into the slag guide groove 124 and slide into the slag collecting box 5 in the slag collecting chamber 125 to achieve preliminary separation. As the filter cartridge 2 continues to rotate, impurities with a diameter larger than the aperture size of the filter hole 23 will continue to move toward the bottom end of the filter cartridge 2 and enter the discharge pipe 13 under the action of its own gravity, the impact of the plastic particles and the sweeping of the brush 6 regardless of the rotation of the filter cartridge 2. The blowing mechanism in the discharge pipe 13 will blow the impurities with larger volume and lighter mass into the slag discharge hole 131 on the opposite side, and enter the slag collecting box 5 in the slag collecting chamber 125 for unified treatment to achieve secondary separation.

[0037] The utility model can efficiently separate and filter impurities of different volumes by setting a two-level separation, and can clean some impurities that block the filter holes 23 through the rotation cooperation of the brush 6 and the filter cartridge 2. As the filter cartridge 2 rotates continuously, impurities with a diameter larger than the aperture of the filter holes 23 will be continuously moved toward the bottom of the filter cartridge 2 and enter the discharge pipe 13 by the effects of their own gravity, the impact of plastic particles and the sweeping of the brush 6, and finally detach from the filter holes 23 to realize the self-clearing function. The device is not easy to be blocked and can be automatically cleared, which solves the problem that the filter device in the prior art is prone to blockage, thereby affecting the filtering effect, and finally all impurities are collected in the slag collecting box 5 and can be easily cleaned, thereby greatly improving work efficiency and having high practicality.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An injection molding raw material filtering device, characterized in that: include: A housing (1), wherein the housing (1) is fixedly arranged, and an inclined filter chamber (12) is arranged inside the housing (1); a feed inlet (11) and a discharge outlet (17) communicating with the inside and outside of the housing (1) are respectively arranged at the higher end and the lower end of the filter chamber (12); and the filter chamber (12) and the discharge outlet (17) are also communicated with each other via a feed pipe (13); A filter cartridge (2), wherein a plurality of filter holes (23) are distributed on the cartridge wall of the filter cartridge (2), the filter cartridge (2) is rotatably disposed in the filter cavity (12), and two ends of the filter cartridge (2) are connected to the feed port (11) and the discharge port (17); A blower mechanism is provided on one side of the feed tube (13); a slag discharge hole (131) is provided on the opposite side of the feed tube (13) of the blower mechanism; and a slag collecting chamber (125) is connected to the outside of the slag discharge hole (131).

2. The device for filtering injection molding raw materials according to claim 1, characterized in that: The two ends of the filter cartridge (2) are respectively surrounded by a protruding first limiting ring (21) and a second limiting ring (22), and the higher end and the lower end of the filter cavity (12) are respectively surrounded by a first installation groove (121) and a second installation groove (122) for the first limiting ring (21) and the second limiting ring (22) to be embedded.

3. The injection molding material filtering device according to claim 1, characterized in that: An inclined slag guiding groove (124) is provided at the bottom of the filter cavity (12), and the bottom end of the slag guiding groove (124) is connected to the slag collecting cavity (125).

4. The device for filtering injection molding raw materials according to claim 1, characterized in that: A brush (6) is arranged in the filter cavity (12); a plurality of bristles (61) are arranged at one end of the brush (6) close to the filter cartridge (2); and the bristles (61) extend toward the filter cartridge (2) and into the filter hole (23).

5. The device for filtering injection molding raw materials according to claim 1, characterized in that: The housing (1) is provided with a driving assembly, the driving assembly is rotatably connected with a driving gear (32), the driving gear (32) is meshed with a driven gear (24), and the driven gear (24) is arranged around the outer wall of the filter cartridge (2).

6. The device for filtering injection molding raw materials according to claim 5, characterized in that: The driving assembly comprises a driving motor (3), a driving shaft (31) of the driving motor (3) is inserted into the housing (1), and a distal end of the driving shaft (31) is fixedly connected to the driving gear (32).

7. The device for filtering injection molding raw materials according to claim 1, characterized in that: The air blowing mechanism comprises a blower (4), and an air outlet pipe (42) of the blower (4) is directly opposite to the slag discharge hole (131).

8. The device for filtering injection molding raw materials according to claim 1, characterized in that: A material blocking plate (133) with an outwardly convex curved surface extends from the lower edge of the slag discharge hole (131) toward one side of the slag collecting chamber (125).

9. The injection molding material filtering device according to claim 1, characterized in that: The housing (1) is provided with an opening on one side of the slag collecting chamber (125), a slag collecting box (5) is slidably arranged in the opening, and a handle (51) is fixed on the outer side of the slag collecting box (5).

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