Precise material injection device

Abstract

The utility model discloses a precise material injection device which comprises a bottom plate, two mixing tanks and two raw material boxes are installed on the upper surface of the bottom plate, the two raw material boxes are used for storing main materials and auxiliary materials respectively, stirring assemblies are arranged in the two mixing tanks, and a driving assembly for driving the stirring assemblies to rotate is arranged between the two mixing tanks. According to the utility model, the two mixing tanks and the two raw material boxes are arranged, the two raw material boxes are respectively used for storing the main material and the auxiliary material, and the top of each raw material box is provided with the metering pump, so that the main material and the auxiliary material can be added into one mixing tank through the metering pump at the top of the raw material box; the two mixing tanks are used for mixing main materials and auxiliary materials, the stirring assemblies in the mixing tanks are used for mixing the materials, then the discharging pumps are used for discharging the mixed materials, in the process, the two mixing tanks can be alternately used for mixing the main materials and the auxiliary materials, then the mixed materials are alternately discharged, continuous material injection operation is achieved, and therefore the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polydicyclopentadiene processing, in particular to a precision injection device. Background Art

[0002] Polydicyclopentadiene PDCPD is a homopolymer or copolymer of dicyclopentadiene (DCPD). It is a cross-linked three-dimensional network structure engineering plastic. At present, the reaction injection molding (RIM) process of polydicyclopentadiene material (PDCPD) is generally a double injection of main material and auxiliary material. The specific method is to use two metering pumps to inject the main material and auxiliary material into the injection machine at a certain ratio at the same time, and then mix them through the mixing head of the injection machine and inject them into the mold.

[0003] The patent with publication number CN212266496U discloses a polydicyclopentadiene precision injection device, which can achieve high ratio accuracy and good mixing uniformity and consistency by mixing the main material and auxiliary material in a certain proportion before injection by the injection machine, thus greatly improving the quality of polydicyclopentadiene material injection molding. However, when the device is used, it takes a certain amount of time to mix the main material and auxiliary material when they are added to the inside of the tank body. During this period of mixing, it is impossible to continuously inject material into the mold, which will delay the production progress and affect the production efficiency, so further improvement is needed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a precision injection device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a precision injection device, comprising a base plate, two mixing tanks and two raw material boxes are installed on the upper surface of the base plate, the two raw material boxes are used to store main materials and auxiliary materials respectively, stirring components are arranged inside the two mixing tanks, and a driving component for driving the stirring components to rotate is arranged between the two mixing tanks, main material feeding pipes are fixed on the top of the two mixing tanks, and the other ends of the two main material feeding pipes are fixedly connected to the first main pipe, auxiliary material feeding pipes are fixedly connected on the top of the two mixing tanks, and the other ends of the two auxiliary material feeding pipes are fixedly connected to the second main pipe, metering pumps are fixed on the upper surfaces of the two raw material boxes, and the metering pump inlets are connected to the inside of the raw material boxes through pipelines, and the discharge ports of the two metering pumps are connected to the first main pipe and the second main pipe respectively, discharge pipes are fixed on the bottom ends of the two mixing tanks, and the bottom ends of the two discharge pipes are fixedly connected to the main discharge pipe, and the other end of the main discharge pipe is connected to the discharge pump.

[0006] Furthermore, the stirring assembly includes a vertical shaft that passes through the top wall of the mixing tank and is rotatably connected to the mixing tank, the bottom end of the vertical shaft is fixedly connected to a stirring rod, the driving assembly includes a motor fixed between the two mixing tanks, the motor output shaft is fixedly connected to two driving wheels, the top ends of the two vertical shafts are fixedly connected to driven wheels, and the two driving wheels are respectively connected to the two driven wheels by belts.

[0007] Furthermore, the middle parts of the two main material feeding pipes are fixedly connected with a first solenoid valve, and the middle parts of the two auxiliary material feeding pipes are fixedly connected with a second solenoid valve.

[0008] Furthermore, a third solenoid valve is fixedly connected to the middle of the two discharge pipes.

[0009] Furthermore, the top walls of the two raw material boxes are both provided with a feeding port.

[0010] Furthermore, the outer side walls of the bottom ends of the two mixing tanks are fixedly connected with jackets, the two jackets are connected by pipelines, and the side walls of the two jackets are respectively fixed with a water inlet pipe and a drain pipe.

[0011] Furthermore, temperature sensors are fixedly installed on the bottom ends of the inner walls of the two mixing tanks.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is in use, the precision injection device is provided with two mixing tanks and two raw material boxes. The two raw material boxes are respectively used to store the main material and the auxiliary material. A metering pump is provided on the top of each raw material box. Therefore, the main material and the auxiliary material can be added to one of the mixing tanks through the metering pump on the top of the raw material box, and the materials are mixed by the stirring component in the mixing tank and then the mixed materials are discharged by the discharge pump. In this process, the two mixing tanks can be alternately used to mix the main material and the auxiliary material, and then the mixed materials can be alternately discharged to realize continuous injection operation, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 : An overall cross-sectional view of the utility model;

[0016] Figure 2 : A three-dimensional diagram of the raw material box of the utility model;

[0017] Figure 3 :The utility model Figure 1 Enlarged view of point A in the middle.

[0018] The reference numerals are as follows:

[0019] 1. Bottom plate; 2. Mixing tank; 3. Stirring assembly; 31. Vertical axis; 32. Stirring rod; 4. Driving assembly; 41. Motor; 42. Driving wheel; 43. Driven wheel; 44. Belt; 5. Raw material box; 51. Feeding port; 6. Main material feeding pipe; 61. First solenoid valve; 7. Auxiliary material feeding pipe; 71. Second solenoid valve; 8. First main pipe; 9. Second main pipe; 10. Metering pump; 11. Feeding pipe; 111. Third solenoid valve; 12. Main discharge pipe; 13. Discharge pump; 14. Jacket; 15. Temperature sensor. DETAILED DESCRIPTION

[0020] 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 of 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.

[0021] like Figure 1-Figure 3 As shown, it relates to a precision injection device, including a base plate 1, two mixing tanks 2 and two raw material boxes 5 are installed on the upper surface of the base plate 1, the two raw material boxes 5 are used to store main materials and auxiliary materials respectively, stirring components 3 are arranged inside the two mixing tanks 2, and a driving component 4 for driving the stirring components 3 to rotate is arranged between the two mixing tanks 2, main material feeding pipes 6 are fixed on the top of the two mixing tanks 2, and the other ends of the two main material feeding pipes 6 are fixedly connected to a first main pipe 8, auxiliary material feeding pipes 7 are fixedly connected to the top of the two mixing tanks 2, and the other ends of the two auxiliary material feeding pipes 7 are fixedly connected to a second main pipe 9, metering pumps 10 are fixed on the upper surfaces of the two raw material boxes 5, and the feeding ports of the metering pumps 10 are connected to the inside of the raw material boxes 5 through pipelines, and the discharge ports of the two metering pumps 10 are connected to the first main pipe 8 and the second main pipe 9 respectively, and discharge pipes 11 are fixed on the bottom ends of the two mixing tanks 2, and the bottom ends of the two discharge pipes 11 are fixedly connected to a main discharge pipe 12, and the other end of the main discharge pipe 12 is connected to a discharge pump 13.

[0022] The stirring assembly 3 includes a vertical shaft 31 that passes through the top wall of the mixing tank 2 and is rotatably connected to the mixing tank 2. A stirring rod 32 is fixedly connected to the bottom end of the vertical shaft 31. The driving assembly 4 includes a motor 41 fixed between the two mixing tanks 2. The output shaft of the motor 41 is fixedly connected to two driving wheels 42. The top ends of the two vertical shafts 31 are fixedly connected to driven wheels 43. The two driving wheels 42 are respectively connected to the two driven wheels 43 by belts 44.

[0023] After the main material and the auxiliary material are added into the mixing tank 2, the motor 41 can be started to drive the two vertical shafts 31 to rotate simultaneously by the transmission of the belt 44, so that the stirring rods 32 in the two mixing tanks 2 rotate, thereby stirring and mixing the materials in the mixing tank 2.

[0024] The middle parts of the two main material feeding pipes 6 are fixedly connected with a first solenoid valve 61 , and the middle parts of the two auxiliary material feeding pipes 7 are fixedly connected with a second solenoid valve 71 .

[0025] The main material and auxiliary material can be added into one of the mixing tanks 2 by opening the first solenoid valve 61 and the second solenoid valve 71 on the top of the mixing tank 2. At this time, the first solenoid valve 61 and the second solenoid valve 71 on the top of the other mixing tank 2 can be closed, thereby alternately adding the main material and auxiliary material into the two mixing tanks 2.

[0026] A third solenoid valve 111 is fixedly connected to the middle of the two feeding pipes 11 .

[0027] By alternately opening the third solenoid valves 111 on the two discharge pipes 11 , alternate discharge of the two mixing tanks 2 can be achieved.

[0028] The top walls of the two raw material boxes 5 are both provided with a feeding port 51 .

[0029] The main material or dressing material can be added into the raw material box 5 through the feeding port 51 .

[0030] The outer side walls of the bottom ends of the two mixing tanks 2 are fixedly connected with jackets 14, the two jackets 14 are connected by pipelines, and the side walls of the two jackets 14 are respectively fixed with water inlet pipes and drainage pipes.

[0031] By introducing cold water or hot water into the jacket 14, the mixing tank 2 can be cooled or heated to meet different usage requirements.

[0032] The bottom ends of the inner walls of the two mixing tanks 2 are fixedly mounted with temperature sensors 15. When the mixing tank 2 is heated or cooled, the temperature inside the mixing tank 2 can be monitored by the temperature sensors 15.

[0033] Working principle: first open the first solenoid valve 61 and the second solenoid valve 71 on the top of one of the mixing tanks 2, and close the first solenoid valve 61 and the second solenoid valve 71 on the top of the other mixing tank 2. At this time, start the metering pumps 10 on the top of the two raw material boxes 5, and the main material and the auxiliary material can be added to the mixing tank 2 with the valves opened. After the raw materials are added, the vertical shaft 31 and the stirring rod 32 are driven by the motor 41 to rotate to achieve the initial mixing of the materials. After the mixing is completed, the third solenoid valve 111 at the bottom of the mixing tank 2 is opened, and the mixed materials are discharged under the drive of the discharge pump 13, thereby achieving injection. In this process, the first solenoid valve 61 and the second solenoid valve 71 on the top of the mixing tank 2 that is discharging can be closed, and then the first solenoid valve 61 and the second solenoid valve 71 on the top of the other mixing tank 2 can be opened, and the other mixing tank 2 can be used to continue mixing the raw materials, so as to achieve alternating mixing and alternating discharge of the two mixing tanks 2, thereby ensuring that the injection can be carried out continuously.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A precision injection device, comprising a base plate (1), characterized in that: Two mixing tanks (2) and two raw material boxes (5) are installed on the upper surface of the bottom plate (1). The two raw material boxes (5) are used to store the main material and the auxiliary material respectively. A stirring assembly (3) is provided inside the two mixing tanks (2), and a driving assembly (4) for driving the stirring assembly (3) to rotate is provided between the two mixing tanks (2). A main material feed pipe (6) is fixed at the top of the two mixing tanks (2), and the other ends of the two main material feed pipes (6) are fixedly connected to a first main pipe (8). Auxiliary material feed pipes (7) are fixedly connected at the top of the two mixing tanks (2), and The other ends of the two auxiliary material feed pipes (7) are fixedly connected to the second main pipe (9); the upper surfaces of the two raw material boxes (5) are fixed with metering pumps (10), and the feed ports of the metering pumps (10) are connected to the inside of the raw material boxes (5) through pipelines; the discharge ports of the two metering pumps (10) are respectively connected to the first main pipe (8) and the second main pipe (9); the bottom ends of the two mixing tanks (2) are fixed with discharge pipes (11), and the bottom ends of the two discharge pipes (11) are fixedly connected to a main discharge pipe (12); the other end of the main discharge pipe (12) is connected to a discharge pump (13).

2. A precision injection device according to claim 1, characterized in that: The stirring assembly (3) comprises a vertical shaft (31) penetrating the top wall of the mixing tank (2) and rotatably connected to the mixing tank (2); the bottom end of the vertical shaft (31) is fixedly connected to a stirring rod (32); the driving assembly (4) comprises a motor (41) fixed between the two mixing tanks (2); the output shaft of the motor (41) is fixedly connected to two driving wheels (42); the top ends of the two vertical shafts (31) are fixedly connected to driven wheels (43); the two driving wheels (42) are respectively connected to the two driven wheels (43) by belts (44).

3. A precision injection device according to claim 1, characterized in that: The middle parts of the two main material feeding pipes (6) are fixedly connected to a first electromagnetic valve (61), and the middle parts of the two auxiliary material feeding pipes (7) are fixedly connected to a second electromagnetic valve (71).

4. A precision injection device according to claim 1, characterized in that: A third solenoid valve (111) is fixedly connected to the middle of the two feeding pipes (11).

5. A precision injection device according to claim 1, characterized in that: The top walls of the two raw material boxes (5) are both provided with a feeding port (51).

6. A precision injection device according to claim 1, characterized in that: The outer side walls of the bottom ends of the two mixing tanks (2) are both fixedly connected with a jacket (14), the two jackets (14) are connected via a pipeline, and the side walls of the two jackets (14) are respectively fixed with a water inlet pipe and a water outlet pipe.

7. A precision injection device according to claim 1, characterized in that: Temperature sensors (15) are fixedly mounted on the bottom ends of the inner side walls of the two mixing tanks (2).

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