Flocculent material metering device
By designing a ball-floc material metering device for BMC ball-shaped material, the problem of reduced forming strength and screw plugging caused by glass fibers during screw conveying is solved, and accurate metering and high-strength molding are achieved.
Patent Information
- Application Number
- CN202420955652.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-06
AI Technical Summary
During the injection molding process of BMC mass-shaped materials, glass fibers are easily affected by shear, extrusion and friction when transported through the screw, resulting in a decrease in strength after molding. At the same time, the poor fluidity of high-content glass fibers leads to the screw being blocked and affects production.
A flocculent material metering device is designed, including a support frame, a pressurized oil cylinder, a pressurized piston, a cylinder base, a sealing baffle, an injection baffle and a switching device. The flocculent BMC material is pushed into the cylinder through the pressurized piston. The metering plunger and the metering oil cylinder are combined with the switching device to achieve accurate metering and feeding, and improve the compactness and molding strength of the material.
By accurately measuring and controlling the feeding of raw materials, the measurement accuracy of floc materials and the product strength after injection molding are improved, the problem of screw blockage is avoided, and the continuity of production is ensured.
Smart Images
Figure CN222645253U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of metering devices, in particular to a metering device for flocculent materials. Background Art
[0002] At present, the injection molding of BMC agglomerates requires the BMC feeder to force the material into the barrel of the injection molding machine, then convey it to the front of the barrel through the screw, and then inject it into the mold cavity for solidification. However, the spiral conveying, shearing, extrusion, and friction of the glass fiber through the screw have a great impact on the strength of the material after molding. At the same time, some customers have higher requirements for product strength, and the glass fiber content is high, and the fluidity is worse, causing the screw to block and unable to produce. For this reason, we propose a metering device for agglomerated flocculent materials. Utility Model Content
[0003] The utility model provides a flocculent material metering device, which improves the metering accuracy and the strength of the product after injection molding.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for metering flocculent materials, comprising a support frame, a material pressing cylinder is installed at one end of the support frame, and a material pressing piston is installed on the pressure cylinder close to the support frame, a cylinder base is installed at the other end of the support frame, and a sealing baffle and an injection baffle are respectively attached to the surface of the cylinder base, the ends of the sealing baffle and the injection baffle are connected to a switching device installed on the cylinder base, a metering cylinder is installed on the cylinder base opposite to the switching device, and a metering plunger is installed at the end of the metering cylinder, a metering cylinder is installed at the end of the metering plunger, a hopper installed on the surface of the cylinder base is attached to the surface of the sealing baffle, and the cylinder is fixed to the surface of the hopper.
[0005] Furthermore, a funnel-shaped groove is provided in the middle of the hopper.
[0006] Furthermore, a circular through hole is provided in the middle of the sealing baffle, and the circular through hole in the middle of the sealing baffle is aligned with the discharge port in the middle of the cylinder base.
[0007] Furthermore, there is a gap between the hopper and the surface of the cylinder base, and the gap between the hopper and the surface of the cylinder base matches the thickness of the sealing baffle.
[0008] The beneficial effects of the utility model are:
[0009] The flocculent material metering device uses a pressure cylinder to push the flocculent BMC material placed in the cylinder, and the metering plunger moves backward. After the metering cylinder reaches a preset pressure, the switching device is started, and the switching device pushes the sealing baffle and the injection baffle to move. The sealing baffle seals the cylinder base, and the injection baffle opens the cylinder base, thereby feeding the material. Since the amount of raw materials is controlled, the metering accuracy and the strength of the product after injection molding are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0011] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;
[0012] Figure 3 It is a rear cross-sectional structural schematic diagram of the utility model.
[0013] In the figure:
[0014] 1. Pressing cylinder; 2. Pressing piston; 3. Cylinder; 4. Hopper; 5. Sealing baffle; 6. Switching device; 7. Injection baffle; 8. Measuring cylinder; 9. Measuring plunger; 10. Measuring cylinder; 11. Cylinder base; 12. Support frame. DETAILED DESCRIPTION
[0015] In order to further understand the content, features and effects of the utility model, the following embodiments are listed and described in detail with reference to the accompanying drawings.
[0016] Example:
[0017] See also Figure 1 - Figure 3A flocculent material metering device includes a support frame 12, a material pressing cylinder 1 is installed at one end of the support frame 12, and a material pressing piston 2 is installed on the side of the material pressing cylinder 1 close to the support frame 12, a material cylinder base 11 is installed at the other end of the support frame 12, and a sealing baffle 5 and an injection baffle 7 are respectively attached to the surface of the material cylinder base 11, and the ends of the sealing baffle 5 and the injection baffle 7 are connected to a switching device 6 installed on the material cylinder base 11, and a metering cylinder 8 is installed on the material cylinder base 11 opposite to the switching device 6, and the end of the metering cylinder 8 A metering plunger 9 is installed, and a metering oil cylinder 10 is installed at the end of the metering plunger 9. The surface of the sealing baffle 5 is attached to the hopper 4 installed on the surface of the cylinder base 11, and the surface of the hopper 4 is fixed with the cylinder 3. When the operator is loading the material, the operator first puts the ball-like flocculent BMC material into the cylinder 3. When the operator puts the ball-like flocculent BMC material into the cylinder 3, the operator starts the pressing oil cylinder 1, and the pressing oil cylinder 1 pushes the pressing piston 2 to move, and the pressing piston 2 squeezes the ball-like flocculent BMC material placed in the cylinder 3 into the bottom of the cylinder. The metering plunger 9 is pressed into the feed hole in the base 11, and the metering plunger 9 drives the piston of the metering cylinder 10 to move backward. When the metering cylinder 10 moves backward, the metering cylinder 10 generates return oil pressure. When the pressure reaches the density of the BMC material, the piston of the metering cylinder 10 reaches the metering setting position, and the switching device 6 retracts. When the switching device 6 moves, the switching device 6 drives the sealing baffle 5 and the injection baffle 7 to move, so that the circular through hole in the middle of the sealing baffle 5 is opened from the feed hole in the middle of the cylinder base 11. Move away, and then the circular through hole opened in the middle of the injection baffle 7 moves to the feeding through hole in the middle of the cylinder base 11. The injection baffle 7 opens the lower end of the cylinder base 11, so that the hole of the injection baffle 7 is connected with the feeding channel of the cylinder base 11. At this time, the metering action is performed, and the metering cylinder 10 pushes the metering plunger 9 to move forward, and all the flocculent BMC material filled in the metering cylinder 8 is squeezed out and sent into the feeding hole of the injection molding machine barrel, and the hole of the sealing baffle 5 is connected with the feeding port of the cylinder base 11, thereby entering the next metering cycle.
[0018] In other embodiments, a funnel-shaped groove is opened in the middle of the hopper 4. By opening the funnel-shaped groove in the middle of the hopper 4, when the operator puts the clumping BMC material into the cylinder 3, the operator pushes the clumping BMC material to move in the cylinder 3 through the pressing piston 2. After the clumping BMC material passes through the funnel-shaped groove opened in the middle of the hopper 4, the funnel-shaped groove facilitates the collection of the clumping BMC material filled in the cylinder 3, and facilitates the discharge of the clumping BMC material collected in the cylinder 3 from the cylinder 3, thereby avoiding the accumulation of clumping BMC material in the cylinder 3 and improving the convenience of discharging.
[0019] In other embodiments, a circular through hole is opened in the middle of the sealing baffle 5, and the circular through hole opened in the middle of the sealing baffle 5 is aligned with the discharge port opened in the middle of the cylinder base 11. By aligning the circular through hole opened in the middle of the sealing baffle 5 with the discharge port opened in the middle of the cylinder base 11, after the circular through hole opened in the middle of the sealing baffle 5 moves to the discharge port opened in the middle of the cylinder base 11, the sealing baffle 5 opens the cylinder base 11, and when the circular through hole opened on the surface of the sealing baffle 5 moves out of the surface of the cylinder base 11, the sealing baffle 5 closes the cylinder base 11, thereby facilitating the control of closing and opening of the discharge port opened in the middle of the cylinder base 11.
[0020] In other embodiments, there is a gap between the hopper 4 and the surface of the cylinder base 11, and the gap between the hopper 4 and the surface of the cylinder base 11 matches the thickness of the sealing baffle 5. When the gap between the hopper 4 and the surface of the cylinder base 11 matches the thickness of the sealing baffle 5, the sealing baffle 5 can slide in the gap between the hopper 4 and the surface of the cylinder base 11, and the surface of the sealing baffle 5 fits with the surface of the hopper 4 and the cylinder base 11, thereby increasing the sealing performance of the sealing baffle 5 in the gap between the hopper 4 and the surface of the cylinder base 11.
[0021] Although the 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 flocculent material metering device, comprising a support frame (12), characterized in that: A material pressing cylinder (1) is installed at one end of one side of the support frame (12), and a material pressing piston (2) is installed on the side of the material pressing cylinder (1) close to the support frame (12); a material cylinder base (11) is installed at the other end of the support frame (12), and a sealing baffle (5) and an injection baffle (7) are respectively attached to the surface of the material cylinder base (11); the ends of the sealing baffle (5) and the injection baffle (7) are connected to a switching device (6) installed on the material cylinder base (11); a metering cylinder (8) is installed on the material cylinder base (11) opposite to the switching device (6), and a metering plunger (9) is installed at the end of the metering cylinder (8); a metering cylinder (10) is installed at the end of the metering plunger (9); a hopper (4) installed on the surface of the material cylinder base (11) is attached to the surface of the sealing baffle (5), and a material cylinder (3) is fixed to the surface of the hopper (4).
2. A flocculent material metering device according to claim 1, characterized in that: A funnel-shaped groove is provided in the middle of the hopper (4).
3. A flocculent material metering device according to claim 1, characterized in that: A circular through hole is provided in the middle of the sealing baffle plate (5), and the circular through hole provided in the middle of the sealing baffle plate (5) is aligned with a discharge opening provided in the middle of the cylinder base (11).
4. A flocculent material metering device according to claim 1, characterized in that: There is a gap between the hopper (4) and the surface of the cylinder base (11), and the gap between the hopper (4) and the surface of the cylinder base (11) matches the thickness of the sealing baffle (5).