Feeding and drying device for an injection molding machine
By introducing a combination of a blower heating tube and a stirring rod into the injection molding machine's feeding device, the raw materials are dried, solving the problem of moisture-affected raw materials affecting the lifespan of the injection molding machine, and achieving more efficient feeding and a longer equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN TIESI MEIYA PLASTIC PROD CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-14
AI Technical Summary
The existing injection molding machine feeding device does not perform pre-drying treatment during feeding, which causes the moisture in the damp raw material to evaporate into water vapor in the injection molding machine, affecting the life of the injection molding machine.
A feeding and drying device including a blower, a heating tube, a stirring rod, and a dustproof net was designed. The blower generates hot air, which is heated by the heating tube and then discharged into the feeding box by the stirring rod to dry the raw materials. The dustproof net prevents dust from entering.
It effectively reduces residual moisture in raw materials, extends the service life of injection molding machines, prevents dust contamination, and improves feeding smoothness and product quality.
Smart Images

Figure CN224489832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding machine equipment technology, specifically to a feeding and drying device for an injection molding machine. Background Technology
[0002] Injection molding machines are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are also known as injection molding machines or injection machines and are widely used in many industries such as automobiles, electronics, home appliances, medical, packaging, and toys. They are one of the most commonly used pieces of equipment in the plastics processing industry.
[0003] The feeding device of an injection molding machine is a key component that ensures the stable delivery of plastic raw materials to the barrel. Its design directly affects the efficiency of injection molding and product quality. It stores plastic raw materials, and the common capacity ranges from a few kilograms to hundreds of kilograms. Large injection molding machines may be equipped with multiple hoppers to achieve multi-material mixing.
[0004] The prior art patent document CN213860396U discloses a feeding device for an injection molding machine. The feeding device has a bin wall vibrator connected to the feeding cylinder. The bin wall vibrator causes the feeding cylinder to vibrate, which separates the agglomerated plastic particles inside the feeding cylinder, making it less likely for the outlet of the feeding cylinder to be blocked. The discharge end is connected to the moving plate through an elastic component. When the feeding cylinder vibrates through the bin wall vibrator, the feeding cylinder shakes on the moving plate, making the vibration of the feeding cylinder more intense, which in turn makes the discharge of the feeding cylinder smoother.
[0005] Although the aforementioned prior art feeding device vibrates the feeding cylinder through the hopper wall vibrator, thereby making the material discharge from the feeding cylinder smoother, the feeding device in this patented technology does not perform pre-drying and heating treatment on the material during feeding. After the damp raw material is poured into the cylinder, the moisture in the raw material evaporates into water vapor in the injection molding machine, which will affect the life of the injection molding machine. Therefore, we need a feeding drying device for injection molding machines. Utility Model Content
[0006] The purpose of this utility model is to provide a feeding drying device for an injection molding machine, so as to solve the problem in the above-mentioned background technology that the feeding device does not perform pre-drying and heating treatment on the material during feeding, and the moisture in the raw material evaporates into water vapor in the injection molding machine after being poured into the barrel, which will affect the service life of the injection molding machine.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A feeding and drying device for an injection molding machine includes a feeding box, a fixing plate fixedly connected to one side of the feeding box, a drying component installed on the top of the fixing plate, and a dustproof component provided on one side of the fixing plate.
[0009] The drying assembly includes a blower, a connecting pipe fixedly connected to one side of the blower, a heating pipe installed at one end of the connecting pipe, an exhaust pipe fixedly connected to one end of the heating pipe, and a connector installed at one end of the exhaust pipe. A motor is installed on the top of the feed box, and a stirring rod is detachably connected to the output end of the motor via a coupling. A ventilation opening is provided on the outer surface of the stirring rod.
[0010] The dustproof component includes a dustproof net, a connecting groove is provided on one side of the dustproof net, and a connecting block is engaged with the inner wall of the connecting groove. A spring is installed on one side of the connecting block, and a fixing rod is sleeved on the inner wall of the spring. A connecting plate is fixedly connected to one end of the fixing rod.
[0011] Preferably, the top of the feeding box is fixedly connected to a feeding port, and the bottom of the feeding box is provided with a discharging port.
[0012] Preferably, the blower and the heating pipe form a fixed structure through a connecting pipe, and the connecting pipe is disposed between the blower and the heating pipe.
[0013] Preferably, the heating element is fixed to the connector via an exhaust pipe, and the exhaust pipe is disposed between the heating element and the connector, while the heating element is disposed between the connector and the exhaust pipe.
[0014] Preferably, the feed box has a rotating structure formed by a motor and a stirring rod, and the number of ventilation openings is multiple.
[0015] Preferably, the dustproof net forms an interlocking structure with the connecting block through a connecting groove, and the shape and size of the connecting groove match the shape and size of the connecting block.
[0016] Preferably, the connecting block forms a fixed structure with the connecting plate through a fixing rod, and one end of the fixing rod passes through the inner wall of the spring and is connected to one side of the connecting block.
[0017] Compared with the prior art, the beneficial effects of this utility model are: a feeding drying device for an injection molding machine,
[0018] First, this utility model includes a blower, a connecting pipe, a heating pipe, an exhaust pipe, a connector, a motor, a stirring rod, and a vent. The blower generates a blowing effect, and the air is heated as it passes through the heating pipe. The hot air then enters the connector through the exhaust pipe. The stirring rod inside the connector rotates under the drive of the motor, and during its rotation, it expels the hot air from the vent. This process dries and heats the raw materials in the feed box, reducing residual moisture and extending the service life of the injection molding machine to some extent.
[0019] Secondly, this utility model is equipped with a dustproof net, a connecting groove, a connecting block, a spring, a fixing rod, and a connecting plate. The dustproof net can prevent dust from entering the blower and contaminating the raw materials. By moving the connecting plate outward by hand, the connecting block at one end of the fixing rod can be disengaged from the connecting groove, which facilitates the release of the limiting fixation of the dustproof net and makes it easy to disassemble and assemble the dustproof net, making it convenient for workers to replace and clean the dustproof net. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the front sectional view of the present invention;
[0022] Figure 3 This is a schematic diagram of the heating tube and stirring rod structure of this utility model;
[0023] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.
[0024] In the diagram: 1. Feed box; 2. Fixing plate; 3. Drying assembly; 301. Blower; 302. Connecting pipe; 303. Heating pipe; 304. Exhaust pipe; 305. Connector; 306. Motor; 307. Stirring rod; 308. Ventilation port; 4. Feed inlet; 5. Discharge outlet; 6. Dustproof assembly; 601. Dustproof net; 602. Connecting groove; 603. Connecting block; 604. Spring; 605. Fixing rod; 606. Connecting plate. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A feeding and drying device for an injection molding machine includes a feeding box 1, a fixing plate 2 fixedly connected to one side of the feeding box 1, a drying component 3 installed on the top of the fixing plate 2, and a dustproof component 6 provided on one side of the fixing plate 2.
[0027] The drying assembly 3 includes a blower 301, a connecting pipe 302 fixedly connected to one side of the blower 301, a heating pipe 303 installed at one end of the connecting pipe 302, an exhaust pipe 304 fixedly connected to one end of the heating pipe 303, and a connector 305 installed at one end of the exhaust pipe 304. A motor 306 is installed on the top of the feed box 1. The output end of the motor 306 is detachably connected to a stirring rod 307 via a coupling, and a vent 308 is provided on the outer surface of the stirring rod 307.
[0028] The dustproof component 6 includes a dustproof net 601. A connecting groove 602 is provided on one side of the dustproof net 601, and a connecting block 603 is engaged with the inner wall of the connecting groove 602. A spring 604 is installed on one side of the connecting block 603, and a fixing rod 605 is sleeved on the inner wall of the spring 604. A connecting plate 606 is fixedly connected to one end of the fixing rod 605.
[0029] Through the above technical solution, the blower 301 can generate a blowing effect, and the air can be heated when it passes through the heating tube 303. The hot air enters the connector 305 through the exhaust pipe 304. The stirring rod 307 in the connector 305 can rotate under the drive of the motor 306. During the rotation of the stirring rod 307, the hot air can be discharged from the vent 308, thereby drying and heating the raw materials in the feed box 1, reducing the residual moisture in the raw materials, and extending the service life of the injection molding machine to a certain extent.
[0030] Specifically, the top of the feeding box 1 is fixedly connected to the feeding port 4, and the bottom of the feeding box 1 is provided with the discharging port 5.
[0031] The above technical solution facilitates the entry of raw materials into the feed box 1 from the feed inlet 4 for storage, and discharges them from the discharge outlet 5 when discharge is required.
[0032] Specifically, the blower 301 forms a fixed structure with the heating tube 303 through the connecting pipe 302, and the connecting pipe 302 is located between the blower 301 and the heating tube 303.
[0033] The above technical solution facilitates the starting of the blower 301, which draws outside air into the connecting pipe 302, allowing the air to be discharged into the heating pipe 303 for heating. By converting electrical energy into heat energy, the effect of heating the air is achieved.
[0034] Specifically, the heating element 303 is fixed to the connector 305 via the exhaust pipe 304, and the exhaust pipe 304 is located between the heating element 303 and the connector 305, while the heating element 303 is located between the connector 302 and the exhaust pipe 304.
[0035] The above technical solution facilitates the heating of air to enter the connector 305 through the exhaust pipe 304, allowing the gas to be discharged into the stirring rod 307, thus achieving the effect of discharging hot air into the feed box 1.
[0036] Specifically, the feed box 1 is a rotating structure formed by the motor 306 and the stirring rod 307, and there are multiple vents 308.
[0037] The above technical solution facilitates the starting motor 306 to drive the stirring rod 307 to rotate. During the rotation of the stirring rod 307, the hot air is discharged into the feed box 1 through the vent 308, so that the raw materials in the feed box 1 are dried and heated, reducing the residual moisture on the raw materials. In addition, the stirring of the stirring rod 307 can further dry the moisture in the raw materials.
[0038] Specifically, the dustproof net 601 forms an engaging structure with the connecting block 603 through the connecting groove 602, and the shape and size of the connecting groove 602 match the shape and size of the connecting block 603.
[0039] The above technical solution facilitates the installation of the dustproof net 601 into one side of the blower 301. The dustproof net 601 is limited and fixed by the connecting block 603 extending into the connecting groove 602, thus achieving the effect of installing the dustproof net 601 on one side of the blower 301. This can prevent dust from entering the blower 301 and reduce the amount of dust entering the feed box 1.
[0040] Specifically, the connecting block 603 forms a fixed structure with the connecting plate 606 through the fixing rod 605, and one end of the fixing rod 605 passes through the inner wall of the spring 604 and is connected to one side of the connecting block 603.
[0041] The above technical solution facilitates the movement of the connecting plate 606 outward by hand, which in turn moves the fixing rod 605 outward and the connecting block 603 outward, causing the connecting block 603 to disengage from the connecting groove 602 and release the limiting fixation on the dustproof net 601. When the connecting plate 606 is released, the connecting block 603 can extend into the connecting groove 602 under the action of the spring 604 to limit and fix the dustproof net 601, thus achieving the effect of facilitating the disassembly and assembly of the dustproof net 601.
[0042] Working Principle: When using the feeding and drying device of this injection molding machine, the device is first equipped with an external power supply to power the equipment inside. When drying and heating the raw material, simply start the blower 301. The blower 301 discharges outside air from the connecting pipe 302 into the heating pipe 303, where it is heated. The heated air then enters the connecting part 305 through the exhaust pipe 304. The hot air then enters the stirring rod 307 through the channel within the connecting part 305. Starting the motor 306 drives the stirring rod 307 to rotate. During rotation, the stirring rod 307 discharges hot air through the vent 308, thus mixing, drying, and heating the raw material. To reduce residual moisture in the raw materials, when replacing the dustproof net 601, simply pull the connecting plate 606 outward by hand. The connecting plate 606 drives the fixing rod 605 outward, and the fixing rod 605 drives the connecting block 603 outward to disengage from the connecting groove 602. Then, pull the dustproof net 601 upward by hand and re-insert the new dustproof net 601 into one side of the blower 301 for installation. Then, release the connecting plate 606, and under the action of the spring 604, the connecting block 603 extends into the connecting groove 602 to fix the dustproof net 601, thus completing the replacement of the dustproof net 601. This completes all the work. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit defined by the appended claims and their equivalents.
Claims
1. A feeding and drying device for an injection molding machine, comprising a feeding box (1), characterized in that: A fixing plate (2) is fixedly connected to one side of the feed box (1), and a drying component (3) is installed on the top of the fixing plate (2). A dustproof component (6) is provided on one side of the fixing plate (2). The drying assembly (3) includes a blower (301), a connecting pipe (302) is fixedly connected to one side of the blower (301), and a heating pipe (303) is installed at one end of the connecting pipe (302). An exhaust pipe (304) is fixedly connected to one end of the heating pipe (303), and a connector (305) is installed at one end of the exhaust pipe (304). A motor (306) is installed on the top of the feed box (1). A stirring rod (307) is detachably connected to the output end of the motor (306) through a coupling. A ventilation port (308) is opened on the outer surface of the stirring rod (307). The dustproof component (6) includes a dustproof net (601), a connecting groove (602) is provided on one side of the dustproof net (601), and a connecting block (603) is engaged with the inner wall of the connecting groove (602). A spring (604) is installed on one side of the connecting block (603), and a fixing rod (605) is sleeved on the inner wall of the spring (604). A connecting plate (606) is fixedly connected to one end of the fixing rod (605).
2. The feeding and drying device for an injection molding machine according to claim 1, characterized in that: The top of the feeding box (1) is fixedly connected to the inlet (4), and the bottom of the feeding box (1) is provided with the outlet (5).
3. The feeding and drying device for an injection molding machine according to claim 1, characterized in that: The blower (301) is fixed to the heating pipe (303) via a connecting pipe (302), and the connecting pipe (302) is located between the blower (301) and the heating pipe (303).
4. The feeding and drying device for an injection molding machine according to claim 1, characterized in that: The heating tube (303) is fixed by the exhaust pipe (304) and the connector (305), and the exhaust pipe (304) is located between the heating tube (303) and the connector (305). The heating tube (303) is located between the connector (302) and the exhaust pipe (304).
5. The feeding and drying device for an injection molding machine according to claim 1, characterized in that: The feed box (1) is a rotating structure formed by a motor (306) and a stirring rod (307), and there are multiple vents (308).
6. The feeding and drying device for an injection molding machine according to claim 1, characterized in that: The dustproof net (601) forms a snap-fit structure with the connecting block (603) through the connecting groove (602), and the shape and size of the connecting groove (602) match the shape and size of the connecting block (603).
7. The feeding and drying device for an injection molding machine according to claim 1, characterized in that: The connecting block (603) forms a fixed structure with the connecting plate (606) through the fixing rod (605), and one end of the fixing rod (605) passes through the inner wall of the spring (604) and is connected to one side of the connecting block (603).