Preheating feeding device for utensil injection molding machine

Abstract

The utility model belongs to injection moulding technical field, concretely speaking is a kind of utensil injection molding machine's preheating feed device, including work bench, the surface of work bench is fixedly installed with four supporting legs, the top of four supporting legs is fixedly installed with guide column, the outside of guide column is all equipped with vibration spring, one end of vibration spring is fixedly installed with feed bin, the side of feed bin is provided with vibrating mechanism, for driving feed bin vibration, work bench surface is equipped with injection molding mechanism, cooperates through vibrating mechanism and vibration spring, realizes high -efficient anti -clumping and stable feed, first motor drive carousel linkage each component, make feed bin vibration, break raw material adhesion and even blanking, vibration spring absorbs impact, auxiliary reset, guarantee equipment stability and vibration effect, simultaneously, knob can be flexibly adjusted slider position, adjustment amplitude, adapt to different raw material characteristics, solve raw material granularity uneven, easily clump and other difficult problems, improve feed efficiency and uniformity.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding technology, specifically a preheating feeding device for a tableware injection molding machine. Background Technology

[0002] In the manufacturing of plastic tableware, injection molding technology has become the mainstream production process due to its high efficiency and high precision. During the injection molding process, the preheating feeding device is a crucial component, and its performance directly affects the plasticization quality of the plastic raw materials and the molding effect.

[0003] In most cases during the production process, plastic granules are directly fed into the injection molding machine. If the plastic granules are not preheated, it will affect the working efficiency of the injection molding machine. In the plastic tableware production industry, with the diversification of market demand, enterprises need to frequently use different types of raw materials for production. These raw materials not only have significant differences in chemical properties, but also vary greatly in physical form, with particle sizes ranging from fine powder to large lumps. When the raw materials are fed, they may clump together, which can easily lead to uneven flow rate, blockage, and other problems, resulting in reduced production efficiency and large fluctuations in product quality.

[0004] Therefore, this utility model provides a preheating feeding device for a tableware injection molding machine. Utility Model Content

[0005] In order to overcome the shortcomings of existing technologies and solve the technical problems raised in the background art.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The preheating feeding device of the tableware injection molding machine of this utility model includes a worktable, four legs are fixedly installed on the surface of the worktable, guide columns are fixedly installed on the top of each of the four legs, vibration springs are sleeved on the outer side of each guide column, a feeding bin is fixedly installed on one end of the vibration spring, and a vibration mechanism is provided on one side of the feeding bin for driving the feeding bin to vibrate.

[0007] The workbench surface is equipped with an injection molding mechanism for heating the raw material to melt it. A preheating tank is installed through the surface of the injection molding mechanism. A top cover is fixedly installed at the bottom of the preheating tank by a hinge. A feeding hopper is installed through the top cover and is located below the feeding bin. The preheating tank has symmetrical slots, each containing a locking block. The slots and locking blocks are compatible. A first ring is fixedly installed on one side of each locking block. A contact cylinder is symmetrically installed at the bottom of the first ring. A second ring is installed at the bottom of the contact cylinder. A limiting mechanism is provided inside the second ring to limit the contact cylinder. A preheating heating tube is installed on the inner wall of the second ring by a fixing block.

[0008] Preferably, the vibration mechanism includes a gantry frame fixedly mounted on the upper surface of the workbench. A first motor is fixedly mounted at the top of the gantry frame, and the output end of the first motor passes through the gantry frame. A turntable is fixedly connected to the output end of the first motor. A first flange is fixedly mounted on the bottom surface of the turntable. One end of a double ball-head bolt is hinged inside the first flange. A second flange is provided at the other end of the double ball-head bolt away from the first flange. A slider is fixedly mounted at the bottom end of the second flange. Two guide rods are fixedly mounted on the inner wall of the gantry frame. A support platform is slidably fitted onto the surfaces of the two guide rods, and one side of the support platform is fixedly connected to the feed hopper. The slider is slidably connected in a sliding cavity opened in the support platform. A threaded rod is threadedly connected to the support platform, and the surface of the threaded rod is fitted with a threaded hole opened in the slider. A knob is fixedly mounted at the end of the threaded rod that extends through the support platform to the outside.

[0009] Preferably, a limit plate is fixedly installed at the bottom end of the two guide rods to limit the sliding position of the support platform along the axial direction of the guide rods.

[0010] Preferably, the injection molding mechanism includes a processing tube body fixedly mounted on the surface of the worktable by a mounting block. A plasticizing heating tube is sleeved on the outside of the processing tube body for heating the raw material inside the processing tube body. A second motor is fixedly mounted on one end of the processing tube body. The output end of the second motor extends into the processing tube body. A plasticizing screw is fixedly connected to the output end of the second motor. A check valve is fixedly mounted on one end of the plasticizing screw for controlling the conveying direction of the raw material.

[0011] Preferably, the limiting mechanism includes symmetrically formed grooves within the second ring body, each groove having a tension spring fixedly installed on its inner wall, and each tension spring having a limiting block fixedly installed at one end, the limiting block being inclined, with the contact cylinder located within the groove.

[0012] Preferably, a first handle is fixedly installed on the surface of the top cover, and a second handle is fixedly installed on the surface of the first ring body.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The preheating feeding device for a tableware injection molding machine described in this utility model achieves efficient anti-agglomeration and stable feeding through the coordinated action of a vibration mechanism and a vibration spring. The first motor drives the turntable to link various components, causing the feeding hopper to vibrate, breaking the adhesion of raw materials and discharging them evenly. The vibration spring absorbs the impact and assists in resetting, ensuring the stability of the equipment and the vibration effect. At the same time, the knob can flexibly adjust the position of the slider and adjust the amplitude to adapt to different raw material characteristics, solving problems such as uneven particle size and easy agglomeration of raw materials, and improving feeding efficiency and uniformity.

[0015] 2. The preheating feeding device for a tableware injection molding machine described in this utility model significantly improves raw material processing efficiency and equipment maintenance convenience through multi-stage collaboration. The plasticizing heating tube and plasticizing screw work together to achieve precise heating and efficient plasticizing. The check valve ensures stable conveying and ensures uniform melting of raw materials. At the same time, the limiting connection structure between the first ring and the second ring allows for quick installation and disassembly, facilitating the inspection and replacement of the preheating heating tube, reducing maintenance difficulty, and balancing production continuity and equipment durability. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the preheating tank of this utility model;

[0020] Figure 4 This is an exploded view of the limiting mechanism and the ring body of this utility model;

[0021] Figure 5 This is a schematic diagram showing the positions of the vibration mechanism and the feed hopper of this utility model;

[0022] Figure 6 This is a cross-sectional view of the vibration mechanism of this utility model;

[0023] In the diagram: 1. Workbench; 2. Vibration mechanism; 201. Gantry frame; 202. First motor; 203. Turntable; 204. First flange; 205. Second flange; 206. Double ball head bolt; 207. Slider; 208. Guide rod; 209. Support platform; 211. Threaded rod; 212. Knob; 3. Injection molding mechanism; 31. Second motor; 32. Plasticizing heating tube; 33. Plasticizing screw; 34. Stop 35. Return valve; 4. Processing tube body; 5. Limiting mechanism; 6. Slide groove; 7. Limiting block; 8. Tension spring; 9. Support leg; 10. Guide column; 11. Vibration spring; 12. Feeding bin; 13. Feeding hopper; 14. Top cover; 15. First handle; 16. Preheating barrel; 17. First ring body; 18. Second ring body; 19. Second handle; 10. Preheating heating tube; 10. Slot; 11. Block; 12. Contact cylinder. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 6 As shown in the embodiment of this utility model, a preheating feeding device for a tableware injection molding machine includes a worktable 1. Four legs 5 are fixedly installed on the surface of the worktable 1. Guide columns 51 are fixedly installed at the top of each of the four legs 5. Vibration springs 6 are sleeved on the outer sides of each guide column 51. A feeding bin 7 is fixedly installed at one end of each vibration spring 6. A vibration mechanism 2 is provided on one side of the feeding bin 7. The vibration mechanism 2 includes a gantry frame 201 fixedly installed on the upper surface of the worktable 1. A first motor 202 is fixedly installed at the top of the gantry frame 201. The output end of the first motor 202 passes through the gantry frame 201. A turntable 203 is fixedly connected to the output end of the first motor 202. A first flange 204 is fixedly installed on the bottom surface of the turntable 203. The interior of the first flange 204... One end of the double ball head bolt 206 is hinged, and the other end of the double ball head bolt 206 away from the first flange 204 is provided with a second flange 205. The bottom end of the second flange 205 is fixedly installed with a slider 207. Two guide rods 208 are fixedly installed on the inner wall of the gantry frame 201. The surfaces of the two guide rods 208 are slidably fitted with a support platform 209, and one side of the support platform 209 is fixedly connected to the feed bin 7. The slider 207 is slidably connected in the sliding cavity opened in the support platform 209. The support platform 209 is internally threaded with a threaded rod 211, and the surface of the threaded rod 211 is fitted with a threaded hole opened in the slider 207. A knob 212 is fixedly installed at the end of the threaded rod 211 that extends through the support platform 209 to the outside, which is used to drive the feed bin 7 to vibrate.

[0026] The workbench 1 is equipped with an injection molding mechanism 3 for heating the raw material to melt it. A preheating tank 11 is installed through the surface of the injection molding mechanism 3. A top cover 9 is fixedly installed at the bottom of the preheating tank 11 by a hinge. A feed hopper 8 is installed through the top cover 9 and is located below the feed bin 7. The preheating tank 11 has symmetrically arranged slots 16, each of which has a locking block 17. The slots 16 and locking blocks 17 are compatible. A first ring body 12 is fixedly installed on one side of the locking block 17. A receiving device is symmetrically installed at the bottom of the first ring body 12. The contact cylinder 18 has a second ring 13 at its bottom end. The second ring 13 has a limiting mechanism 4 inside it for limiting the contact cylinder 18. A preheating heating tube 15 is installed on the inner wall of the second ring 13 by a fixing block. The limiting mechanism 4 includes a sliding groove 41 symmetrically opened in the second ring 13. A tension spring 43 is fixedly installed on the inner wall of each sliding groove 41. A limiting block 42 is fixedly installed on one end of each tension spring 43. The limiting block 42 is inclined. The contact cylinder 18 is located in the sliding groove 41.

[0027] Specifically, the operator places the raw materials into the feed hopper 7, then starts the first motor 202. The output of the first motor 202 drives the turntable 203 to rotate. The rotation of the motor converts electrical energy into mechanical energy of the turntable 203. The turntable 203 drives the double ball head bolt 206 to perform eccentric circular motion through the first flange 204. The double ball head bolt 206 utilizes the multi-angle adaptability of the ball joint to convert the circular motion into the reciprocating pushing and pulling action of the second flange 205. The second flange 205 drives the support platform 209 to slide linearly back and forth along the guide rod 208 through the slider 207. The support platform 209 drives the feed hopper 7 to vibrate synchronously. As the feed hopper 7 passes through, the vibration of the feed hopper 7 causes relative movement between the raw material particles inside, breaking the electrostatic adsorption. To prevent moisture adhesion, vibration dispersion is achieved to ensure uniform material distribution. The bottom of the feed hopper 7 is connected to the guide column 51 of the support leg 5 via a vibration spring 6. The two ends of the vibration spring 6 are fixed to the top of the support leg 5 and the bottom of the feed hopper 7, respectively. On the one hand, the vibration spring 6 absorbs vibration impact through elastic deformation, reducing the transmission of vibration to the worktable 1 and other mechanisms, and ensuring the overall stability of the equipment. On the other hand, the restoring force of the vibration spring 6 can assist the feed hopper 7 in resetting, enhance the reciprocating effect of vibration, and improve the material dispersion efficiency. At the same time, when conveying different materials, the position of the slider 207 in the support table 209 can be adjusted by the knob 212, changing the effective swing radius of the double ball head bolt 206, and finally adjusting the amplitude of the feed hopper 7, flexibly switching the vibration mode to adapt to different material characteristics.

[0028] Vibration causes the raw material to flow evenly along the feed hopper 7 and fall steadily into the preheating tank 11 through the feed hopper 8, avoiding problems such as insufficient material or blockage caused by uneven flow rate. The top cover 9 is connected to the preheating tank 11 by a hinge and can be opened and closed manually for easy cleaning or maintenance. The preheating heating tube 15 is fixed inside the preheating tank 11 by the second ring 13. It uses the principle of electrothermal conversion to preheat the falling raw material, reducing the plasticizing load of the subsequent injection molding mechanism 3. The contact cylinder 18 at the bottom of the first ring 12 is connected by a limiting mechanism 4. If the preheating heating tube 15 is damaged after long-term use, it can be quickly disassembled and reassembled. The preheated raw material enters the injection molding mechanism 3 through the discharge port at the bottom of the preheating tank 11 and is melted and molded by the injection molding mechanism 3.

[0029] like Figure 6 As shown, limit plates are fixedly installed at the bottom ends of the two guide rods 208 to limit the sliding position of the support platform 209 along the axial direction of the guide rods 208.

[0030] Specifically, the guide rod 208 provides a linear motion reference for the support platform 209, and the limiting plate further constrains the sliding range, so that the vibration of the support platform 209 is always kept within the preset axial range. This ensures that the vibration direction and amplitude of the feed hopper 7 are stable, and avoids the vibration of the feed hopper 7 from deviating due to the sliding offset of the support platform 209, thus ensuring the uniformity of raw material dispersion and discharge.

[0031] like Figures 1 to 2 As shown, the injection molding mechanism 3 includes a processing tube body 35 fixedly mounted on the surface of the worktable 1 by a mounting block. A plasticizing heating tube 32 is sleeved on the outside of the processing tube body 35 for heating the raw material inside the processing tube body 35. A second motor 31 is fixedly mounted on one end of the processing tube body 35. The output end of the second motor 31 extends into the processing tube body 35. A plasticizing screw 33 is fixedly connected to the output end of the second motor 31. A check valve 34 is fixedly mounted on one end of the plasticizing screw 33 for controlling the conveying direction of the raw material.

[0032] Specifically, the preheated raw material falls into the processing tube body 35. The second motor 31 drives the plasticizing screw 33 to rotate. Utilizing the screw's spiral propulsion principle, the raw material is conveyed towards the check valve 34. The plasticizing heating tube 32 is sleeved on the outside of the processing tube body 35. Through heat conduction, the raw material inside the tube is heated a second time, bringing it to a molten state to prepare for injection molding. The check valve 34, through its one-way sealing structure, prevents the molten raw material from flowing back when the screw 33 retracts, ensuring stable injection pressure and improving product molding quality.

[0033] like Figures 2 to 3 As shown, a first handle 10 is fixedly installed on the surface of the upper cover 9, and a second handle 14 is fixedly installed on the surface of the first ring body 12.

[0034] Specifically, the first handle 10 is set on the surface of the upper cover 9, which makes it convenient for operators to quickly open and close the upper cover 9 of the preheating barrel 11 to handle residual materials, etc. The second handle 14 is installed on the surface of the first ring body 12, providing a point of leverage for disassembling and installing the first ring body 12, making it easier for operators to separate or combine the first ring body 12 and the second ring body 13.

[0035] Working principle:

[0036] The operator places the raw materials into the feed hopper 7 and then starts the first motor 202. The output of the first motor 202 drives the turntable 203 to rotate. The rotation of the motor converts electrical energy into mechanical energy of the turntable 203. The turntable 203 drives the double ball head bolt 206 to perform eccentric circular motion through the first flange 204. The double ball head bolt 206 utilizes the multi-angle adaptability of the ball joint to convert the circular motion into the reciprocating push-pull action of the second flange 205. The second flange 205 drives the support platform 209 to slide linearly back and forth along the guide rod 208 through the slider 207. The support platform 209 drives the feed hopper 7 to vibrate synchronously. As the feed hopper 7 passes through, the vibration causes relative motion between the raw material particles inside, breaking down electrostatic adsorption and moisture absorption. The material is effectively dispersed through vibration to achieve uniform material distribution. The bottom of the feed hopper 7 is connected to the guide column 51 of the support leg 5 via a vibration spring 6. The two ends of the vibration spring 6 are fixed to the top of the support leg 5 and the bottom of the feed hopper 7, respectively. On the one hand, the vibration spring 6 absorbs vibration impact through elastic deformation, reduces the transmission of vibration to the worktable 1 and other mechanisms, and ensures the overall stability of the equipment. On the other hand, the restoring force of the vibration spring 6 can assist the feed hopper 7 in resetting, enhance the reciprocating effect of vibration, and improve the material dispersion efficiency. At the same time, when conveying different materials, the position of the slider 207 in the support table 209 can be adjusted by the knob 212, changing the effective swing radius of the double ball head bolt 206, and finally adjusting the amplitude of the feed hopper 7, flexibly switching the vibration mode to adapt to different material characteristics.

[0037] After being dispersed by the vibration mechanism 2 and preheated by the preheating tank 11, the raw materials fall into the processing tube body 35 through the discharge port at the bottom of the preheating tank 11. The plasticizing heating tube 32 is sleeved on the outside of the processing tube body 35. After the power is turned on, electrical energy is converted into heat energy using the principle of resistance heating, and the internal temperature of the processing tube body 35 is raised through heat conduction. The second motor 31 starts, and the output end of the second motor 31 rotates, converting electrical energy into mechanical energy and transmitting it to the plasticizing screw 33. The plasticizing screw 33 rotates inside the processing tube body 35, and the spiral structure on the surface of the plasticizing screw 33... The raw material is pushed towards the check valve 34. During the conveying process, on the one hand, the shearing force generated by the rotation of the plasticizing screw 33, combined with the heating of the processing tube body 35, shears and plasticizes the raw material, making the raw material mix more evenly and melt more fully. On the other hand, the advancement of the plasticizing screw 33 ensures that the raw material is continuously and stably conveyed to the injection end, avoiding material interruption and accumulation. After being heated by the plasticizing heating tube 32, sheared and conveyed by the plasticizing screw, and controlled by the check valve 34, the raw material is melted and plasticized in the processing tube body 35, becoming a uniform molten plastic, and then enters the next process.

[0038] During long-term operation, the preheating heating tube 15 may be damaged. During installation, the first ring 12 is connected to the preheating tank 11 slot 16 via the locking block 17. The operator applies a downward installation force to insert the contact cylinder 18 into the slide groove 41 of the second ring 13. The contact cylinder 18 presses against the inclined limiting block 42, overcoming the elastic force of the tension spring 43, and then slides along the surface of the limiting block 42 into the slide groove 41. After sliding, the tension spring 43 returns to its original position. The limiting block 42 acts as a limit for the contact cylinder 18, automatically locking the first ring 12. During disassembly, the second handle 14 is pulled to move the first ring 12 upward, and then the first ring 12 is rotated. The first ring 12 moves the contact cylinder 18 into the slide groove 41, and the inclined surface of the limiting block 42 is pressed again, compressing the tension spring 43. The contact cylinder 18 then disengages from the slide groove 41, achieving quick separation of the first ring 12 and the second ring 13 for easy maintenance and repair.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A preheating feeding device for an injection molding machine for cutlery, comprising a worktable (1), characterized in that: Four legs (5) are fixedly installed on the surface of the workbench (1). Guide columns (51) are fixedly installed on the top of each of the four legs (5). Vibration springs (6) are sleeved on the outside of each guide column (51). A feed bin (7) is fixedly installed on one end of the vibration spring (6). A vibration mechanism (2) is provided on one side of the feed bin (7) to drive the feed bin (7) to vibrate. The workbench (1) is equipped with an injection molding mechanism (3) for heating the raw material to melt it. A preheating tank (11) is installed through the surface of the injection molding mechanism (3). A top cover (9) is fixedly installed at the bottom of the preheating tank (11) by a hinge. A feed hopper (8) is installed through the top cover (9) and is located below the feed bin (7). The preheating tank (11) is symmetrically provided with slots (16), and each slot (16) is provided with a locking block (17). The slot (16) is adapted to the block (17). A first ring (12) is fixedly installed on one side of the block (17). A contact cylinder (18) is symmetrically installed at the bottom end of the first ring (12). A second ring (13) is provided at the bottom end of the contact cylinder (18). A limiting mechanism (4) is provided inside the second ring (13) to limit the contact cylinder (18). A preheating heating tube (15) is installed on the inner wall of the second ring (13) by a fixing block.

2. A pre-heat feeding device for a utensil injection molding machine according to claim 1, characterized in that: The vibration mechanism (2) includes a gantry frame (201) fixedly installed on the upper surface of the workbench (1). A first motor (202) is fixedly installed at the top of the gantry frame (201). The output end of the first motor (202) passes through the gantry frame (201). A turntable (203) is fixedly connected to the output end of the first motor (202). A first flange (204) is fixedly installed on the bottom surface of the turntable (203). A double ball head bolt (206) is hinged inside the first flange (204). A second flange (205) is provided at the end of the double ball head bolt (206) away from the first flange (204). A slider (207) is fixedly installed at the bottom of the disc (205). Two guide rods (208) are fixedly installed on the inner wall of the gantry frame (201). A support platform (209) is slidably sleeved on the surface of the two guide rods (208). One side of the support platform (209) is fixedly connected to the feed hopper (7). The slider (207) is slidably connected inside the support platform (209). A threaded rod (211) is threadedly connected inside the support platform (209). The threaded rod (211) is threadedly connected to the slider (207). A knob (212) is fixedly installed at one end of the threaded rod (211) that extends through the support platform (209) to the outside.

3. A pre-heat feeding device for a utensil injection molding machine according to claim 2, characterized in that: Limiting plates are fixedly installed at the bottom ends of the two guide rods (208) to limit the sliding position of the support platform (209) along the axial direction of the guide rods (208).

4. A pre-heat feeding device for a utensil injection molding machine according to claim 1, wherein: The injection molding mechanism (3) includes a processing tube body (35) fixedly mounted on the surface of the workbench (1) by a mounting block. A plasticizing heating tube (32) is sleeved on the outside of the processing tube body (35) for heating the raw material inside the processing tube body (35). A second motor (31) is fixedly mounted on one end of the processing tube body (35). The output end of the second motor (31) extends into the processing tube body (35). A plasticizing screw (33) is fixedly connected to the output end of the second motor (31). A check valve (34) is fixedly mounted on one end of the plasticizing screw (33) for controlling the conveying direction of the raw material.

5. A pre-heat feeding device for a utensil injection molding machine according to claim 1, wherein: The limiting mechanism (4) includes symmetrically opened grooves (41) in the second ring body (13). Tension springs (43) are fixedly installed on the inner wall of each groove (41). A limiting block (42) is fixedly installed at one end of each tension spring (43), and the limiting block (42) is inclined. The contact cylinder (18) is located in the groove (41).

6. The preheating feeding device for a tableware injection molding machine according to claim 1, characterized in that: A first handle (10) is fixedly installed on the surface of the upper cover (9), and a second handle (14) is fixedly installed on the surface of the first ring body (12).

Images