Automatic baking device

Abstract

The utility model provides an automatic material baking device applied to the field of injection molding equipment, which comprises a mixing and drying tank arranged on an injection molding machine, one side of the injection molding machine is also provided with a crusher and a recycling and drying tank, and the mixing and drying tank is used for providing mixed materials to the input end of the injection molding machine. The crusher is used for crushing a water gap recycled material formed by injection molding of the injection molding machine, and the recycling and drying tank is used for drying the crushed recycled material conveyed by the crusher, conveying the dried recycled material into the mixing and drying tank, mixing the dried recycled material with a new material, drying the mixture, and conveying the dried mixture to the input end of the injection molding machine. And therefore, the injection molding quality is effectively improved, the injection molding cost is reduced, and the device has market prospects and is suitable for application and popularization.

Description

Technical Field

[0001] The present application relates to the field of injection molding equipment, and in particular to an automatic baking device. Background Art

[0002] The sprue is the excess plastic part of the injection molding process, which is usually cut off after molding. After cleaning, shredding and re-melting, these sprues can be used again in injection molding production, which not only reduces material waste but also reduces production costs.

[0003] However, the recycled nozzle material contains moisture, which can easily lead to defects such as bubbles in the product during the injection molding process. For this reason, an automatic baking device is proposed. Utility Model Content

[0004] The purpose of the present application is to solve the technical problem that the water content of the recycled material of the injection nozzle affects the injection molded product. Compared with the prior art, an automatic baking material device is provided, including a mixing and drying tank arranged on an injection molding machine, a crusher and a recycling and drying tank are also arranged on one side of the injection molding machine, the mixing and drying tank is used to provide mixed materials to the input end of the injection molding machine, the crusher is used to crush the recycled material of the nozzle formed by injection molding of the injection molding machine, and the recycling and drying tank is used to dry the crushed recycled material conveyed by the crusher and convey the dried recycled material to the mixing and drying tank to mix with the new material and then convey it to the input end of the injection molding machine after drying;

[0005] A feed pipe is provided at the bottom of the recovery drying tank, and the input end of the feed pipe is connected to the output end of the pulverizer. A first exhaust pipe and a first material tank are provided at the top of the recovery drying tank. A second material tank and a second exhaust pipe are provided at the top of the mixed drying tank. A main feed port and a secondary feed port are provided on the second material tank, and the output end of the first material tank is connected to the secondary feed port through a pipeline.

[0006] A blower is provided on one side of the recovery drying tank and the mixing drying tank, and a hot air pipe is provided at the output end of the blower. The hot air pipe is connected to the corresponding recovery drying tank and the mixing drying tank respectively, and an electric heating mechanism is fixed in the hot air pipe. A dispersion cover is rotatably connected in the recovery drying tank, and a plurality of spiral blades are fixed on the outer wall of the dispersion cover at equal angles. The top of the dispersion cover is connected to the input end of the first exhaust pipe, and a filter is provided on the input end of the first exhaust pipe. The recovery drying tank is also fixed with a conical inner net at the bottom of the dispersion cover, and a shunt pipeline is provided at the bottom of the conical inner net. The shunt pipeline includes an annular pipe and an axial pipe, and a plurality of shunt outlet pipes are connected between the annular pipe and the axial pipe. The annular pipe is connected to the output end of the hot air pipe through a shunt inlet pipe, and the bottom end of the axial pipe is connected to the output end of the feed pipe. The top end of the axial pipe extends to the interior of the dispersion cover, and the inner wall of the dispersion cover is fixed with a driving fan blade matched with the axial pipe.

[0007] Furthermore, the blowers are each provided with a control box for controlling the blower speed and the heat of the hot air pipe.

[0008] Furthermore, the conical inner net is of a conical structure, and is provided with a plurality of penetrating heat dissipation holes on the conical inner net, a heat dissipation cavity is formed between the conical inner net and the bottom of the recovery drying tank, and the output end of the hot air pipe is also connected to the heat dissipation cavity through a branch flow.

[0009] Furthermore, the diverter outlet pipe is arranged to be inclined upward, the diameter of the diverter outlet pipe gradually decreases from bottom to top, and the axis of the diverter outlet pipe is arranged tangent to the inner wall of the axial tube.

[0010] Furthermore, the filter aperture of the filter screen is smaller than the particle size of the crushed particles of the recycled material conveyed by the crusher.

[0011] Compared with the prior art, the advantages of this application are:

[0012] The present application can effectively recycle the sprue waste produced by the injection molding machine through the cooperation of a pulverizer, a recovery drying tank and a mixing drying tank, and mix it with new material and then dry it again after being fully dried. The drying efficiency is high, and it can prevent the moisture in the sprue waste from being converted into steam during the injection molding heating process, forming bubbles during the injection molding process, and affecting the surface quality and physical properties of the product, thereby effectively improving the injection molding quality and reducing the injection molding cost. It has market prospects and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of this application;

[0014] Figure 2 It is a schematic diagram of the structure of the recovery drying tank and the mixed drying tank proposed in this application;

[0015] Figure 3 This is a schematic diagram of the internal structure of the recovery drying tank proposed in this application;

[0016] Figure 4 It is a schematic diagram of the structure of the dispersion hood proposed in this application;

[0017] Figure 5 It is a structural schematic diagram of the diversion pipeline proposed in this application;

[0018] Figure 6 It is a schematic diagram of the cross-sectional structure of the recovery drying tank proposed in this application;

[0019] Figure 7 This is a schematic diagram of the material flow of the recovery drying tank proposed in this application.

[0020] Description of the numbers in the figure:

[0021] Crusher 1, recovery drying tank 2, first exhaust pipe 21, filter screen 211, first material tank 22, feed pipe 23, conical inner net 24, mixing drying tank 3, second material tank 31, main feed port 311, auxiliary feed port 312, second exhaust pipe 32, blower 4, hot air pipe 41, electric heating mechanism 42, control box 5, dispersion cover 6, spiral blade 61, driving fan blade 62, shunt pipeline 7, annular pipe 71, axial pipe 72, shunt outlet pipe 73, shunt inlet pipe 74, injection molding machine 8. DETAILED DESCRIPTION

[0022] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0023] Embodiment 1:

[0024] The utility model provides an automatic baking device, please refer to Figure 1-7 , including a mixing and drying tank 3 arranged on the injection molding machine 8, a crusher 1 and a recovery and drying tank 2 are also arranged on one side of the injection molding machine 8, the mixing and drying tank 3 is used to provide mixed materials to the input end of the injection molding machine 8, the crusher 1 is used to crush the nozzle recovery material formed by injection molding of the injection molding machine 8, and the recovery and drying tank 2 is used to dry the crushed recovery material conveyed by the crusher 1 and convey the dried recovery material to the mixing and drying tank 3 to mix with the new material and then dry it and convey it to the input end of the injection molding machine 8;

[0025] A feed pipe 23 is provided at the bottom of the recovery drying tank 2, and the input end of the feed pipe 23 is connected to the output end of the pulverizer 1. A first exhaust pipe 21 and a first material tank 22 are provided at the top of the recovery drying tank 2. A second material tank 31 and a second exhaust pipe 32 are provided at the top of the mixing drying tank 3. A main feed port 311 and an auxiliary feed port 312 are provided on the second material tank 31. The output end of the first material tank 22 is connected to the auxiliary feed port 312 through a pipeline.

[0026] A blower 4 is provided on one side of the recovery drying tank 2 and the mixing drying tank 3. A hot air pipe 41 is provided at the output end of the blower 4. The hot air pipe 41 is connected to the corresponding recovery drying tank 2 and the mixing drying tank 3 respectively. An electric heating mechanism 42 is fixed in the hot air pipe 41. A dispersion cover 6 is rotatably connected in the recovery drying tank 2. A plurality of spiral blades 61 are evenly fixed on the outer wall of the dispersion cover 6 at equal angles. The top of the dispersion cover 6 is connected to the input end of the first exhaust pipe 21. A filter screen 211 is provided on the input end of the first exhaust pipe 21. The filter aperture of the filter screen 211 is smaller than the filter aperture of the powder conveyed by the pulverizer 1. The particle size of the recycled material crushed particles, the recovery drying tank 2 is also fixed with a conical inner net 24 at the bottom of the dispersion cover 6, and a shunt pipeline 7 is provided at the bottom of the conical inner net 24. The shunt pipeline 7 includes an annular tube 71 and an axial tube 72. A plurality of shunt outlet pipes 73 are connected between the annular tube 71 and the axial tube 72. The annular tube 71 is connected to the output end of the hot air pipe 41 through the shunt inlet pipe 74. The bottom end of the axial tube 72 is connected to the output end of the feed pipe 23. The top end of the axial tube 72 extends to the interior of the dispersion cover 6. The inner wall of the dispersion cover 6 is fixed with a driving fan blade 62 that matches the axial tube 72.

[0027] It should be noted that the blower 4 is provided with a control box 5 for controlling the rotation speed of the blower 4 and the heat of the hot air pipe 41, and sensors for detecting the internal temperature and humidity are arranged in the recovery drying tank 2 and the mixing drying tank 3. With the control of the control box 5, the recovered material in the recovery drying tank 2 and the mixed material in the mixing drying tank 3 can be effectively dried.

[0028] Furthermore, the conical inner net 24 has a conical structure, and is provided with a plurality of penetrating heat dissipation holes on the conical inner net 24, a heat dissipation cavity is formed between the conical inner net 24 and the bottom of the recovery drying tank 2, and the output end of the hot air pipe 41 is also connected to the heat dissipation cavity.

[0029] Among them, the branch outlet pipe 73 is arranged to be inclined upward, and the diameter of the branch outlet pipe 73 gradually decreases from bottom to top. The axis of the branch outlet pipe 73 is arranged tangent to the inner wall of the axial pipe 72. When the hot air transported by the hot air pipe 41 enters the annular pipe 71, it is introduced into the axial pipe 72 by the branch outlet pipe 73. Since the diameter of the branch outlet pipe 73 decreases near the axial pipe 72, the wind speed of the hot air transported by the axial pipe 72 is increased at this time. In addition, since the axis of the branch outlet pipe 73 is arranged tangent to the inner wall of the axial pipe 72, the hot air output from the output end of the multi-component outlet pipe 73 can be transported in the axial pipe 72 in a spiral shape, and a high-speed rotating upward hot air flow is generated. By using the Bernoulli principle, the pressure on the side with a large flow rate is small. At this time, the pressure difference can be used to automatically absorb the recycled material crushed by the crusher 1 through the feed pipe 23 into the axial pipe 72, and cooperate with the hot air for preliminary drying. At the same time, the material will enter the inner wall of the dispersion cover 6 from the top of the axial pipe 72 to complete the automatic feeding action.

[0030] See also Figure 7 When the material enters the dispersion hood 6, on the one hand, it impacts the inner wall of the dispersion hood 6 and falls. At this time, the hot air pipe 41 conveys part of the hot air into the heat dissipation cavity. Since the heat dissipation holes on the conical inner net 24 move upward, they contact the falling material, and then the material is secondary dried. Since the material is in a free falling state, the drying uniformity can be effectively improved. On the other hand, the hot air will impact the driving fan blade 62 to make the dispersion hood 6 rotate. During the rotation process, the spiral blade 61 is used to guide the dry material at the bottom of the conical inner net 24 to the top of the dispersion hood 6, and the negative pressure generated by the auxiliary feed port 312 in the mixing and drying tank 3 is used to transport the dried recycled crushed material to the second material tank 31, completing the feeding action of the recycled crushed material after drying;

[0031] The hot steam after the recycled crushed material is dried will enter the first exhaust pipe 21 through the filtration of the filter screen 211 and be discharged. Since the input end of the filter screen 211 is arranged downward, the material will fall due to its own gravity, so the filter screen 211 will not be blocked. At the same time, the dispersion cover 6 is an overall cover-shaped structure, which can effectively collect the hot steam and discharge it through the first exhaust pipe 21, thereby preventing the hot steam from entering the mixing and drying tank 3 and affecting the drying efficiency of the mixing and drying tank 3.

[0032] The present application can effectively recycle the nozzle waste produced by the injection molding machine 8 through the cooperation of the pulverizer 1, the recovery drying tank 2 and the mixing drying tank 3, and mix it with the new material after being fully dried and then dried. The drying efficiency is high, and it can prevent the moisture in the nozzle waste from being converted into steam during the injection molding heating process, forming bubbles during the injection molding process, and affecting the surface quality and physical properties of the product, thereby effectively improving the injection molding quality and reducing the injection molding cost. It has market prospects and is suitable for promotion and application.

[0033] The above is only the best implementation method adopted by this application in combination with current actual needs, but the protection scope of this application is not limited to this.

Claims

1. An automatic baking device, comprising a mixing drying tank (3) arranged on an injection molding machine (8), wherein a pulverizer (1) and a recovery drying tank (2) are also arranged on one side of the injection molding machine (8), characterized in that: The mixing and drying tank (3) is used to provide the mixed material to the input end of the injection molding machine (8); the pulverizer (1) is used to pulverize the nozzle recycled material formed by injection molding of the injection molding machine (8); the recycling and drying tank (2) is used to dry the pulverized recycled material delivered by the pulverizer (1) and deliver the dried recycled material to the mixing and drying tank (3) to be mixed with the new material and then dried before being delivered to the input end of the injection molding machine (8); A feed pipe (23) is provided at the bottom of the recovery drying tank (2), and the input end of the feed pipe (23) is connected to the output end of the pulverizer (1); a first exhaust pipe (21) and a first material tank (22) are provided at the top of the recovery drying tank (2); a second material tank (31) and a second exhaust pipe (32) are provided at the top of the mixing drying tank (3); a main feed port (311) and a secondary feed port (312) are provided on the second material tank (31); and the output end of the first material tank (22) is connected to the secondary feed port (312) via a pipeline; A blower (4) is provided on one side of the recovery drying tank (2) and the mixing drying tank (3); a hot air pipe (41) is provided at the output end of the blower (4); the hot air pipe (41) is connected to the inside of the corresponding recovery drying tank (2) and the mixing drying tank (3), respectively; an electric heating mechanism (42) is fixed in the hot air pipe (41); a dispersion cover (6) is rotatably connected in the recovery drying tank (2); a plurality of spiral blades (61) are fixed on the outer wall of the dispersion cover (6) at equal angles; the top of the dispersion cover (6) is connected to the input end of the first exhaust pipe (21); a filter screen (211) is provided on the input end of the first exhaust pipe (21); the recovery drying tank (2) is connected to the input end of the first exhaust pipe (21); (2) A conical inner net (24) is fixed at the bottom of the dispersion hood (6), and a shunt pipeline (7) is provided at the bottom of the conical inner net (24). The shunt pipeline (7) includes an annular tube (71) and an axial tube (72). A plurality of shunt outlet pipes (73) are connected between the annular tube (71) and the axial tube (72). The annular tube (71) is connected to the output end of the hot air pipe (41) through the shunt inlet pipe (74). The bottom end of the axial tube (72) is connected to the output end of the feed pipe (23). The top end of the axial tube (72) extends to the interior of the dispersion hood (6). A driving fan blade (62) that matches the axial tube (72) is fixed to the inner wall of the dispersion hood (6).

2. The automatic baking device according to claim 1, characterized in that: The blowers (4) are each provided with a control box (5) for controlling the rotation speed of the blower (4) and the heat of the hot air pipe (41).

3. The automatic baking device according to claim 1, characterized in that: The conical inner net (24) has a conical structure, and is provided with a plurality of penetrating heat dissipation holes on the conical inner net (24). A heat dissipation cavity is formed between the conical inner net (24) and the bottom of the recovery drying tank (2), and the output end of the hot air pipe (41) is also connected to the heat dissipation cavity through a branch flow.

4. The automatic baking device according to claim 1, characterized in that: The diversion outlet pipe (73) is arranged to be inclined upward, the diameter of the diversion outlet pipe (73) gradually decreases from bottom to top, and the axis of the diversion outlet pipe (73) is arranged to be tangent to the inner wall of the axial pipe (72).

5. The automatic baking device according to claim 1, characterized in that: The filter aperture of the filter screen (211) is smaller than the particle size of the crushed particles of the recycled material conveyed by the crusher (1).

Images