Heating device used before engineering plastic injection molding

Abstract

The utility model belongs to the technical field of engineering plastics, and particularly relates to a heating device used before injection molding of engineering plastics, which comprises a heating barrel, a wear-resistant layer is fixedly arranged on the inner wall of the heating barrel, a plurality of heating pipes are fixedly arranged between the heating barrel and the wear-resistant layer, and an upper mounting plate is fixedly arranged at the upper part in the heating barrel. A waste gas filter screen is arranged in the upper mounting plate in a sliding manner; a lower mounting plate is fixedly arranged in the bottom of the heating barrel, and a baffle is slidably arranged in the lower mounting plate; according to the heating device used before engineering plastic injection molding, a motor and an air blower are fixedly arranged at the top of a heating barrel, the motor fixes a rotating shaft into the heating barrel, a stirring rod is fixed outside the rotating shaft, and the air blower connects a connecting pipe to the upper portion of a waste gas filter screen, so that plastic raw materials can be comprehensively heated and melted; and when the air blower is used for blow-drying the plastic raw materials, the waste gas filter screen can filter impurities, and the waste gas filter screen arranged in a sliding mode can be conveniently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering plastics, in particular to a heating device used before injection molding of engineering plastics. Background Art

[0002] Engineering plastics are plastics that can be used as engineering materials and can replace metals to manufacture machine parts. Engineering plastics have excellent comprehensive properties. Generally, before injection molding, engineering plastics need to be heated and softened to make them melt before subsequent injection molding can be carried out.

[0003] In the prior art, a patent document with publication number: CN218519063U discloses a heating device for engineering plastics before injection molding, which relates to the technical field of engineering plastics. The utility model includes a base; a heating shell is installed on the top of the base; a stirring barrel is arranged inside the heating shell; heating tubes are arranged in a circular array between the inner walls of the cavity relative to each other; a servo motor is installed on one side of the heating shell; a mounting plate is fixedly connected to the edge of the other end of the heating shell; an air extractor is fixedly connected to the top of the mounting plate; stirring rods are arranged in a circular array on the side surface of the rotating shaft; and a scraper is fixedly connected to the end of the stirring rod. The utility model can stir and break up the plastic raw materials by starting the servo motor to drive the rotating shaft and the stirring rod to rotate at a high speed, so that the plastic raw materials are heated more evenly, thereby making the drying more thorough and increasing the speed of air drying. Then, the hydraulic cylinder arranged on the top of the bottom plate can tilt one end of the heating shell upward, and the tilt angle is 45°, so that the plastic raw materials are discharged from one end of the discharge pipe, which is convenient for unloading.

[0004] However, the above-mentioned heating device for engineering plastics before injection molding is provided with an exhaust gas filter inside the heating shell, which can prevent foreign matter in the air from being brought into the heating shell when the blower is drying the internal plastic raw materials. Moreover, since the exhaust gas filter is sleeved inside the heating shell, it is inconvenient to replace the mesh of the exhaust gas filter when it is blocked by foreign matter, which will result in a poor subsequent drying effect. Utility Model Content

[0005] Based on the existing technical problems of engineering plastics, the utility model proposes a heating device for engineering plastics before injection molding.

[0006] The utility model proposes a heating device for engineering plastics before injection molding, comprising a heating barrel, an inner wall of the heating barrel is fixedly provided with a wear-resistant layer, and a plurality of heating tubes are fixedly provided between the heating barrel and the wear-resistant layer, an upper mounting plate is fixedly provided on the upper part of the interior of the heating barrel, and an exhaust gas filter is slidably provided inside the upper mounting plate; a lower mounting plate is fixedly provided on the bottom of the heating barrel, and a baffle is slidably provided inside the lower mounting plate.

[0007] Preferably, second empty grooves are opened on both sides of the upper mounting plate, the second empty grooves pass through the upper mounting plate, and a first sliding groove passing through the upper mounting plate is opened on one side of the middle part of the upper mounting plate, and a third sliding groove is opened on the side of the heating barrel, and the two third sliding grooves are connected with the opposite first sliding grooves.

[0008] Through the above technical solution, the second empty slot can be easily installed with an exhaust gas filter.

[0009] Preferably, an electric telescopic rod is fixed between the two third sliding grooves on the outer wall of the heating barrel, a second connecting rod is fixed to the output end of the electric telescopic rod, first connecting rods are fixed to both ends of the side of the second connecting rod facing the heating barrel, fixed plates matching the first sliding grooves are fixed to the ends of the two first connecting rods, and sliding plates matching the third sliding grooves are fixed to the middle parts of the two first connecting rods; an empty groove is opened in the middle part of the fixed plate, and the empty groove in the middle part of the fixed plate is clamped and fixed to the exhaust gas filter.

[0010] Through the above technical solution, the electric telescopic rod can easily drive the discarded filter to the outside of the heating barrel, thereby facilitating the replacement of the exhaust gas filter.

[0011] Preferably, a motor is fixedly provided at the middle part of the top of the heating barrel, the motor drive shaft is coaxially fixed to the rotating shaft through a coupling, and the rotating shaft bearing passes through the top of the heating barrel and the upper mounting plate to the inside of the heating barrel; a first empty groove is opened between the inner top wall of the heating barrel and the top of the upper mounting plate; a plurality of stirring rods are fixedly provided on the outer wall of the rotating shaft; a blower is fixedly provided on the top of the heating barrel on one side of the motor, a connecting pipe is connected to the output end of the blower, and the connecting pipe passes through the top of the heating barrel to the inside of the stirring rod, and a heating wire is installed inside the connecting pipe.

[0012] Through the above technical solution, the plastic raw material can be stirred by arranging the stirring rod, thereby facilitating the heating of the plastic raw material and making the heating of the plastic raw material more comprehensive.

[0013] Preferably, a third empty groove is opened in the middle of the lower mounting plate, a second sliding groove is opened on one side of the third empty groove, and the second sliding groove passes through to the outside of the lower mounting plate; a baffle is slidably provided inside the second sliding groove, and the baffle is adapted to the third empty groove, and a third connecting rod is fixedly provided at one end of the baffle, the third connecting rod slides through to the outside of the heating barrel, and a pull block is fixedly provided at one end of the third connecting rod outside the heating barrel.

[0014] Through the above technical solution, the baffle plate can be pulled into the third slot by the provided pulling block, so that the plastic raw material in the third slot can be easily discharged after heating.

[0015] Preferably, a feed pipe is provided on the side of the heating barrel, and the feed pipe passes through the lower part of the upper mounting plate inside the heating barrel; an air outlet pipe is fixedly provided on the side of the heating barrel on the side opposite to the electric telescopic rod, and the air outlet pipe passes through the lower part of the upper mounting plate inside the heating barrel.

[0016] Through the above technical solution, the plastic original can be transported to the interior of the heating barrel by providing a feeding pipe.

[0017] Preferably, a discharge barrel is fixedly provided in the middle of the bottom of the heating barrel, and support columns are fixedly provided around the discharge barrel at the bottom of the heating barrel.

[0018] Through the above technical solution, the support column is provided so that the material can be easily recovered after the material is discharged from the discharge barrel.

[0019] The beneficial effects of the present invention are:

[0020] 1. By arranging a blower, a first empty slot, a second empty slot, an exhaust gas filter, an upper mounting plate, a first sliding slot, an electric telescopic rod, a first connecting rod, a second connecting rod, a sliding plate, a third sliding slot, and a fixed plate, when the blower blows air to the inside of the heating barrel to accelerate drying, the exhaust gas filter can block debris in the air from entering the inside of the heating barrel to prevent the plastic raw materials from being affected. When there are too many debris filtered out by the exhaust gas filter, starting the electric telescopic rod can drive the fixed plate to the outside of the heating barrel, thereby facilitating the removal of the exhaust gas filter fixed to the inside of the fixed plate, making it convenient to replace the exhaust gas filter, thereby ensuring the drying effect of subsequent blower blowing.

[0021] 2. By setting the lower mounting plate, the baffle, the pull block, the third connecting rod, the third empty slot, and the second sliding slot, when the plastic raw material inside the heating barrel is heated, the pull block can be pulled to pull the baffle out of the third empty slot, thereby facilitating the discharge of the heated plastic raw material.

[0022] 3. By arranging a motor, a rotating shaft and a stirring rod, the motor can drive the rotating shaft to rotate, thereby driving the stirring rod to rotate, thereby stirring the plastic raw materials, making the plastic raw materials more comprehensively heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall appearance of a heating device for engineering plastics before injection molding proposed by the utility model;

[0024] Figure 2 This is an internal cross-sectional view of a heating device for engineering plastics before injection molding proposed by the utility model;

[0025] Figure 3 This is a top view of the installation of an exhaust gas filter for a heating device before injection molding of engineering plastics proposed by the utility model;

[0026] Figure 4 This is a top view of the installation of an upper mounting plate for a heating device before injection molding of engineering plastics proposed by the utility model;

[0027] Figure 5 This is a top view of the installation of a heating pipe for a heating device before injection molding of engineering plastics proposed by the utility model;

[0028] Figure 6 This is an overall top view of a heating device for engineering plastics before injection molding proposed by the utility model;

[0029] Figure 7 This is an overall bottom view of a heating device for engineering plastics before injection molding proposed by the utility model;

[0030] Figure 8 This is a schematic diagram of the fixing position of a baffle for a heating device before injection molding of engineering plastics proposed by the utility model;

[0031] Fig. 9 This is a schematic diagram of the appearance of a lower mounting plate for a heating device before injection molding of engineering plastics proposed by the utility model;

[0032] Fig.10 The utility model provides a schematic diagram of the installation of a fixing plate for a heating device before injection molding of engineering plastics.

[0033] In the figure: 1. heating barrel; 2. support column; 3. motor; 4. blower; 5. feed pipe; 6. exhaust pipe; 7. first empty slot; 8. rotating shaft; 9. second empty slot; 10. exhaust gas filter; 11. wear-resistant layer; 12. heating pipe; 13. stirring rod; 14. first sliding slot; 15. discharge barrel; 16. electric telescopic rod; 17. first connecting rod; 18. second connecting rod; 19. lower mounting plate; 20. baffle; 21. pull block; 22. third connecting rod; 23. third empty slot; 24. second sliding slot; 25. connecting pipe; 26. heating wire; 27. upper mounting plate; 28. sliding plate; 29. ​​third sliding slot; 30. fixed plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] Embodiment 1:

[0036] Reference Figure 1-Figure 10, a heating device for engineering plastics before injection molding, comprising a heating barrel 1, wherein a wear-resistant layer 11 is fixedly arranged on the inner wall of the heating barrel 1, and a plurality of heating tubes 12 are fixedly arranged between the heating barrel 1 and the wear-resistant layer 11, and heating is performed by the heating tubes 12, so that the temperature of the wear-resistant layer 11 is increased, so that the plastic raw material inside the heating barrel 1 is conveniently heated and melted; an upper mounting plate 27 is fixedly arranged on the upper part of the interior of the heating barrel 1, and an exhaust gas filter 10 is slidably arranged inside the upper mounting plate 27; a lower mounting plate 19 is fixedly arranged on the bottom of the heating barrel 1, and a baffle 20 is slidably arranged inside the lower mounting plate 19; second empty grooves 9 are provided on both sides of the upper mounting plate 27, and the second empty grooves 9 penetrate the upper mounting plate 27, and a first sliding groove 14 penetrating the upper mounting plate 27 is provided on one side of the middle part of the interior of the upper mounting plate 27, and a third sliding groove 29 is provided on the side of the heating barrel 1, and the two third sliding grooves 29 are opposite to each other. The first sliding groove 14 is set through; an electric telescopic rod 16 is fixed between the two third sliding grooves 29 on the outer wall of the heating barrel 1, and a second connecting rod 18 is fixed at the output end of the electric telescopic rod 16. The first connecting rod 17 is fixed at both ends of the side of the second connecting rod 18 facing the heating barrel 1, and the ends of the two first connecting rods 17 are fixed with a fixing plate 30 adapted to the first sliding groove 14, and the middle parts of the two first connecting rods 17 are fixed with a sliding plate 28 adapted to the third sliding groove 29; an empty groove is opened in the middle of the fixing plate 30, and the empty groove in the middle of the fixing plate 30 is clamped and fixed to the exhaust gas filter 10, and the exhaust gas filter 10 is not tangent to the top surface of the fixing plate 30 after being clamped and fixed, so that when the exhaust gas filter 10 needs to be replaced, the electric telescopic rod 16 is started to make the fixing plate 30 slide to the outside of the heating barrel 1, thereby facilitating the replacement of the exhaust gas filter 10.

[0037] Embodiment 2:

[0038] Reference Figure 7 , Figure 8 and Fig. 9On the basis of implementation 1, a third slot 23 is provided in the middle of the lower mounting plate 19, and a second sliding slot 24 is provided on one side of the third slot 23, and the second sliding slot 24 passes through to the outside of the lower mounting plate 19; a scraper is fixedly provided on one side of the second sliding slot 24 at the lower part of the third slot 23, a baffle 20 is slidably provided inside the second sliding slot 24, and the baffle 20 is adapted to the third slot 23, and a third connecting rod 22 is fixedly provided at one end of the baffle 20, and the third connecting rod 22 slides through the outside of the heating barrel 1, and a pull block 21 is fixedly provided at one end of the third connecting rod 22 outside the heating barrel 1; so that when it is necessary to discharge the plastic raw material inside the heating barrel 1, the pull block 21 is pulled to make the baffle 20 away from the third slot 23, so that the plastic raw material is discharged from the inside of the third slot 23, and the scraper can scrape the plastic raw material on the baffle 20 cleanly, thereby preventing the plastic raw material remaining on the baffle 20 from affecting the baffle 20.

[0039] Embodiment 3:

[0040] Reference Figure 1-10 On the basis of implementation 1, a motor 3 is fixedly provided at the middle of the top of the heating barrel 1, and the transmission shaft of the motor 3 is coaxially fixed to the rotating shaft 8 through a coupling, and the bearing of the rotating shaft 8 passes through the top of the heating barrel 1 and the upper mounting plate 27 to the inside of the heating barrel 1; a first empty groove 7 is opened between the inner top wall of the heating barrel 1 and the top of the upper mounting plate 27; a plurality of stirring rods 13 are fixedly provided on the outer wall of the rotating shaft 8; the stirring rods 13 are driven to rotate by the motor 3, so that the plastic raw materials can be stirred, thereby facilitating the comprehensive heating of the plastic raw materials; a blower 4 is fixedly provided on the top of the heating barrel 1 on one side of the motor 3, and a connecting pipe 25 is connected to the output end of the blower 4, and the connecting pipe 25 passes through the top of the heating barrel 1 To the inside of the stirring rod 13, and an electric heating wire 26 is installed inside the connecting pipe 25; the blower 4 can blow hot air into the inside of the heating barrel 1, so as to accelerate the drying of the water vapor generated by the heating of the plastic raw materials. A feeding pipe 5 is provided on the side of the heating barrel 1, and the feeding pipe 5 passes through the lower part of the upper mounting plate 27 inside the heating barrel 1; an air outlet pipe 6 is fixedly provided on the side of the heating barrel 1 opposite to the electric telescopic rod 16, and the air outlet pipe 6 passes through the lower part of the upper mounting plate 27 inside the heating barrel 1, and the air outlet pipe 6 is arranged to facilitate the discharge of gas inside the heating barrel 1; a discharge barrel 15 is fixedly provided in the middle of the bottom of the heating barrel 1, and a support column 2 is fixedly provided around the discharge barrel 15 at the bottom of the heating barrel 1.

[0041] Working principle: When in use, the plastic raw material is poured into the feed pipe 5, so that the plastic raw material enters the heating barrel 1, and then the heating pipe 12 is started to heat the plastic raw material. When the plastic raw material begins to melt during the heating process, the plastic raw material will emit moisture, so the blower 4 is started to blow air to the plastic raw material in the heating barrel 1 to accelerate the drying of the moisture. When the plastic raw material is heated and melted, the pull block 21 is pulled to drive the baffle 20 away from the third empty slot 23, so that the heated logistics is discharged from the third empty slot 23 to the inside of the discharge barrel 15, which is convenient for recycling. ; and when the blower 4 blows air to the inside of the heating barrel 1, foreign matter from the outside will be blown into the heating barrel 1. This is because the exhaust gas filter 10 arranged inside the heating barrel 1 can filter out the foreign matter and prevent the foreign matter from entering the plastic raw materials, thereby affecting the subsequent use of the plastic raw materials. When there are too many plastic raw materials on the surface of the exhaust gas filter 10 after filtration, the electric telescopic rod 16 is started to drive the first connecting rod 17 to move outward, thereby driving the exhaust gas filter 10 to the outside of the heating barrel 1, so that the exhaust gas filter 10 can be easily replaced, and the subsequent drying effect of the plastic raw materials can be guaranteed.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heating device for engineering plastics before injection molding, comprising a heating barrel (1), characterized in that: The inner wall of the heating barrel (1) is fixedly provided with a wear-resistant layer (11), and a plurality of heating tubes (12) are fixedly provided between the heating barrel (1) and the wear-resistant layer (11); an upper mounting plate (27) is fixedly provided on the upper part of the interior of the heating barrel (1), and an exhaust gas filter (10) is slidably provided inside the upper mounting plate (27); a lower mounting plate (19) is fixedly provided on the bottom of the heating barrel (1), and a baffle (20) is slidably provided inside the lower mounting plate (19); The upper mounting plate (27) is provided with second empty grooves (9) on both sides, the second empty grooves (9) penetrate the upper mounting plate (27), and a first sliding groove (14) penetrating the upper mounting plate (27) is provided on one side of the middle portion of the upper mounting plate (27), and a third sliding groove (29) is provided on the side of the heating barrel (1), and the two third sliding grooves (29) are arranged to be connected with the corresponding first sliding grooves (14); An electric telescopic rod (16) is fixed between two third sliding grooves (29) on the outer wall of the heating barrel (1); a second connecting rod (18) is fixed to the output end of the electric telescopic rod (16); first connecting rods (17) are fixed to both ends of the side of the second connecting rod (18) facing the heating barrel (1); fixed plates (30) matching the first sliding grooves (14) are fixed to the ends of the two first connecting rods (17); and sliding plates (28) matching the third sliding grooves (29) are fixed to the middle of the two first connecting rods (17); an empty groove is opened in the middle of the fixed plate (30), and the empty groove in the middle of the fixed plate (30) is clamped and fixed to the exhaust gas filter (10).

2. The heating device for engineering plastics before injection molding according to claim 1 is characterized in that: A motor (3) is fixedly provided at the middle of the top of the heating barrel (1), and the transmission shaft of the motor (3) is coaxially fixed with the rotating shaft (8) through a coupling, and the bearing of the rotating shaft (8) passes through the top of the heating barrel (1) and the upper mounting plate (27) to the inside of the heating barrel (1); a first empty groove (7) is provided between the inner top wall of the heating barrel (1) and the top of the upper mounting plate (27); a plurality of stirring rods (13) are fixedly provided on the outer wall of the rotating shaft (8); a blower (4) is fixedly provided at the top of the heating barrel (1) on one side of the motor (3), and a connecting pipe (25) is connected to the output end of the blower (4), and the connecting pipe (25) passes through the top of the heating barrel (1) to the inside of the stirring rod (13), and a heating wire (26) is installed inside the connecting pipe (25).

3. The heating device for engineering plastics before injection molding according to claim 1 is characterized in that: A third slot (23) is provided in the middle of the lower mounting plate (19), a second sliding slot (24) is provided on one side of the third slot (23), and the second sliding slot (24) passes through to the outside of the lower mounting plate (19); a baffle (20) is slidably provided inside the second sliding slot (24), and the baffle (20) is adapted to the third slot (23), and a third connecting rod (22) is fixedly provided at one end of the baffle (20), and the third connecting rod (22) slides through to the outside of the heating barrel (1), and a pull block (21) is fixedly provided at one end of the third connecting rod (22) outside the heating barrel (1).

4. The heating device for engineering plastics before injection molding according to claim 1 is characterized in that: A feed pipe (5) is provided on the side of the heating barrel (1), and the feed pipe (5) passes through the lower part of the upper mounting plate (27) inside the heating barrel (1); an air outlet pipe (6) is fixedly provided on the side of the heating barrel (1) on the side opposite to the electric telescopic rod (16), and the air outlet pipe (6) passes through the lower part of the upper mounting plate (27) inside the heating barrel (1).

5. The heating device for engineering plastics before injection molding according to claim 1 is characterized in that: A discharge barrel (15) is fixedly provided at the middle of the bottom of the heating barrel (1), and a support column (2) is fixedly provided at the bottom of the heating barrel (1) around the discharge barrel (15).

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