A hot plastic injection part trimming mechanism

Abstract

This utility model discloses a hot-injection molded part trimming mechanism, including a suction cup assembly. The suction cup assembly holds the injection molded part under negative pressure. A welding component is disposed below the injection molded part. The welding component includes a mounting platform, on which are mounted an electric heating wire for welding the connecting strip on the injection molded part and an elastic element for holding the injection molded part in place. This utility model uses the suction cup assembly to clamp and transfer the injection molded part, causing the electric heating wire to cut the incoming injection molded part at the connecting strip position, separating the sprue material from multiple plastic spoons. The sprue material falls down, while the finished plastic spoons are transported by the suction cup assembly to the unloading area for unloading. This achieves automatic separation and collection of the plastic spoons and sprue material, optimizing the injection molded part processing procedure and reducing costs while increasing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to a hot injection molding part trimming mechanism. Background Technology

[0002] Demolding refers to the process by which an injection-molded part, after cooling and solidifying in the mold cavity, detaches from the cavity or core. The core principle is to use mechanical force (such as an ejector mechanism) to overcome the adhesion and shrinkage forces between the injection-molded part and the mold surface, allowing the product to smoothly detach from the mold.

[0003] In the existing technology, when using injection molding machines to produce plastic spoons for cakes, multiple plastic spoons are usually injection molded into one injection part by one mold. Then, workers are required to process the injection part, separating the plastic spoons from the sprue material and placing them separately. This method relies on manual labor, is labor-intensive, and has very low production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a hot-injection molded part trimming mechanism to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hot injection molding part trimming mechanism, including a suction cup assembly, wherein a molded part is negatively adsorbed below the suction cup assembly, and a melting component is provided below the molded part. The melting component includes a mounting platform, and an electric heating wire for melting the connecting strip on the molded part and an elastic element for resisting the molded part are provided on the mounting platform.

[0006] Furthermore, the injection molded part includes a plastic spoon and a sprue, and multiple plastic spoons arranged in parallel are connected to both sides of the sprue by connecting strips.

[0007] Furthermore, a collection bin is fixedly connected to the bottom of the fuse assembly, and a discharge chute is provided on the mounting platform, which is connected to the collection bin.

[0008] Furthermore, the elastic element includes a fixing block, which is fixedly connected to the top surface of the mounting platform. A sliding groove is provided in the fixing block, and a sliding rod is slidably arranged in the sliding groove. The sliding rod is connected to the inner wall of the sliding groove by a spring.

[0009] Furthermore, a silicone rubber gasket is fixedly connected to the top of the slide rod.

[0010] Furthermore, the suction cup assembly includes a mounting plate, the bottom of which is connected to an adapter via a connecting rod, the bottom of which is connected to a suction cup, and adjacent adapters are connected via air tubes.

[0011] Furthermore, a partition plate is provided below the mounting plate, and multiple equally spaced screws are fixedly connected to the bottom of the mounting plate. Each screw is fixedly sleeved with a fixing ring, and the screw passes through the partition plate and is threadedly connected to a nut.

[0012] Furthermore, the fixing ring is located at the top of the partition plate, and a washer sleeved on the outside of the screw is provided between the nut and the partition plate.

[0013] Furthermore, the outer surface of the partition plate is coated with a heat-insulating coating.

[0014] The beneficial effects of the hot-injection molded part trimming mechanism provided by this utility model in the above technical solution are as follows:

[0015] This invention uses a suction cup assembly to clamp and transfer the injection molded part, allowing the heating wire to cut the incoming injection molded part at the connecting strip position, thus separating the sprue material from multiple plastic spoons. The sprue material falls down smoothly, while the finished plastic spoons are transported by the suction cup assembly to the unloading area for unloading. This achieves automatic separation and collection of the plastic spoons and sprue material, optimizes the injection molded part processing procedure, and reduces costs while increasing efficiency.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0017] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A first-view structural schematic diagram provided for an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the second-view structure provided for an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the fuse assembly structure provided in an embodiment of the present utility model;

[0022] Figure 4 Provided for the embodiments of this utility model Figure 1 Enlarged view of point A in the middle;

[0023] Figure 5 A cross-sectional view of the elastic element provided in an embodiment of this utility model;

[0024] Figure 6 A first-view sectional view provided for an embodiment of this utility model;

[0025] Figure 7 A second-view sectional view provided for an embodiment of this utility model;

[0026] Figure 8 Provided for the embodiments of this utility model Figure 6 Enlarged view at point B in the middle;

[0027] Figure 9 Provided for the embodiments of this utility model Figure 7 Enlarged view of point C in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Suction cup assembly; 11. Connecting rod; 12. Adapter; 13. Suction cup; 14. Air hose; 2. Injection molded part; 21. Plastic spoon; 22. Sprue material; 23. Connecting strip; 3. Fusible component; 31. Mounting platform; 32. Discharge chute; 33. Electric heating wire; 34. Elastic component; 341. Fixing block; 342. Slide groove; 343. Slide rod; 344. Silicone rubber gasket; 345. Spring; 4. Collection bin; 5. Divider plate; 51. Screw; 52. Fixing ring; 53. Nut; 54. Washer. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0031] Please see Figures 1-9 A hot injection molding part trimming mechanism includes a suction cup assembly 1, a molded part 2 is negatively adsorbed below the suction cup assembly 1, a melting component 3 is provided below the molded part 2, the melting component 3 includes a mounting platform 31, an electric heating wire 33 for melting the connecting strip 23 on the molded part 2 and an elastic element 34 for resisting the molded part 2 on the mounting platform 31.

[0032] Specifically, this utility model uses a suction cup assembly 1 to clamp and transfer the injection molded part 2, so that the electric heating wire 33 cuts the incoming injection molded part 2 at the position of the connecting strip 23, thereby separating the sprue material 22 from the multiple plastic spoons 21. The sprue material 22 falls down smoothly, while the finished plastic spoons 21 are transported by the suction cup assembly 1 to the unloading area for unloading, realizing the automatic separation and collection of plastic spoons 21 and sprue material 22, optimizing the processing procedure of injection molded part 2, and achieving cost reduction and efficiency improvement.

[0033] Furthermore, the injection molded part 2 includes a plastic spoon 21 and a sprue 22, with multiple parallel plastic spoons 21 connected to both sides of the sprue 22 by connecting strips 23.

[0034] Specifically, the injection molded part 2 is formed by an injection mold. The sprue 22 and the connecting strip 23 are channels within the injection mold. The channel is narrowest at the location of the connecting strip 23. The connecting strip 23 is the connection node between the sprue 22 and the plastic spoon 21. The plastic spoon 21 is separated from the sprue 22 by melting the connecting strip 23. The injection molded part 2 is made of PP material with a melting point of 160~170℃. The electric heating wire 33 is made of iron-chromium-aluminum alloy with a diameter of 0.5mm. The suction cup assembly 1 brings the injection molded part 2 close to the heated electric heating wire 33, and the electric heating wire 33 melts the connecting strip 23, thereby separating the plastic spoon 21 from the sprue 22.

[0035] Furthermore, a collection bin 4 is fixedly connected to the bottom of the fuse assembly 3, and a discharge chute 32 is provided on the mounting platform 31, which is connected to the collection bin 4.

[0036] Specifically, water can be placed in the collection chamber 4 to collect the molten gate material 22 that has been melted and separated. The water can quickly cool down the molten gate material 22. Workers regularly empty the collection chamber 4.

[0037] Furthermore, the elastic element 34 includes a fixing block 341, which is fixedly connected to the top surface of the mounting platform 31. A sliding groove 342 is provided in the fixing block 341, and a sliding rod 343 is slidably arranged in the sliding groove 342. The sliding rod 343 is connected to the inner wall of the sliding groove 342 by a spring 345, and a silicone rubber gasket 344 is fixedly connected to the top of the sliding rod 343.

[0038] Specifically, one end of the spring 345 is fixedly connected to the inner wall of the slide groove 342, and the other two ends of the spring 345 are fixedly connected to the bottom of the slide rod 343. The slide rod 343 is I-shaped, and its bottom is limited within the slide groove 342. The silicone rubber gasket 344 is made of silicone rubber and its bottom is glued to the top of the slide rod 343 to increase friction and has elastic deformation capability, which can better protect the plastic spoon 21. When the suction cup assembly 1 adsorbs the plastic spoon 21 and descends, the bottom of the plastic spoon 21 contacts the silicone rubber gasket 344, and then overcomes the elastic force of the spring 345 to continue moving downward. At this time, the plastic spoon 21 is clamped, making the melting process of the connecting strip 23 more stable.

[0039] Furthermore, the suction cup assembly 1 includes a mounting plate, the bottom of which is connected to an adapter 12 via a connecting rod 11. The bottom of the adapter 12 is connected to a suction cup 13, and adjacent adapters 12 are connected via an air tube 14.

[0040] Specifically, by connecting the air pipe 14 to the vacuum pump, a negative pressure is generated at the bottom of the suction cup 13, which enables the suction cup 13 to adsorb the plastic spoon 21.

[0041] Furthermore, a partition plate 5 is provided below the mounting plate, and multiple equally spaced screws 51 are fixedly connected to the bottom of the mounting plate. Each screw 51 has a fixing ring 52 fixedly sleeved on its outer side. After passing through the partition plate 5, the screw 51 is threadedly connected to the nut 53. The fixing ring 52 is located at the top of the partition plate 5. A washer 54 is provided between the nut 53 and the partition plate 5, which is sleeved on the outer side of the screw 51. The outer side of the partition plate 5 is sprayed with heat insulation coating.

[0042] Specifically, one end of each of the four screws 51 is fixedly connected to the mounting plate, and the other end of each screw 51 passes through the partition plate 5 and is limited by the fixing ring 52. The nut 53 is threaded onto the screw 51, thus limiting the partition plate 5 between the fixing ring 52 and the gasket 54, thereby fixing the partition plate 5. By spraying heat insulation material on the outer side of the partition plate 5, the heat generated by the electric heating wire 33 is blocked, thus preventing the heat generated by the electric heating wire 33 from affecting the air pipe 14.

[0043] In this utility model, reference Figures 1 to 9The mounting plate is equipped with two rows of eight connecting rods 11 evenly spaced. The suction cups 13 adsorb the inner side of the plastic spoon 21. The sixteen suction cups 13 adsorb the injection molded part 2 together and then move the injection molded part 2 down, so that the bottom of the plastic spoon 21 is squeezed by the silicone rubber gasket 344, so that the slide rod 343 overcomes the elastic force of the spring 345 and moves downward. Then the plastic spoon 21 is elastically clamped by the elastic element 34 and the suction cups 13. At the same time, the electric heating wire 33 melts the connecting strip 23, so that the gate material 22 is separated and falls from the discharge trough 32 into the collection chamber 4 under the action of gravity. Finally, the suction cup assembly 1 adsorbs the plastic spoon 21 and transfers it to the discharge area for discharge.

[0044] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hot-injection molded part trimming mechanism, comprising a suction cup assembly (1), characterized in that: The suction cup assembly (1) has a negative pressure adsorbing the injection molded part (2) below it. A fuse assembly (3) is provided below the injection molded part (2). The fuse assembly (3) includes a mounting platform (31). The mounting platform (31) is provided with an electric heating wire (33) for fusing the connecting strip (23) on the injection molded part (2) and an elastic element (34) for resisting the injection molded part (2).

2. The hot-injection molded part trimming mechanism according to claim 1, characterized in that, The injection molded part (2) includes a plastic spoon (21) and a sprue (22). Multiple plastic spoons (21) are connected to both sides of the sprue (22) by connecting strips (23).

3. The hot-injection molded part trimming mechanism according to claim 1, characterized in that, The bottom of the fuse assembly (3) is fixedly connected to a collection bin (4), and a discharge trough (32) is provided on the mounting platform (31), which is connected to the collection bin (4).

4. The hot-injection molded part trimming mechanism according to claim 1, characterized in that, The elastic element (34) includes a fixing block (341), which is fixedly connected to the top surface of the mounting platform (31). A groove (342) is provided in the fixing block (341), and a sliding rod (343) is slidably arranged in the groove (342). The sliding rod (343) is connected to the inner wall of the groove (342) by a spring (345).

5. A hot-injection molded part trimming mechanism according to claim 4, characterized in that, A silicone rubber gasket (344) is fixedly connected to the top of the slide bar (343).

6. The hot-injection molded part trimming mechanism according to claim 1, characterized in that, The suction cup assembly (1) includes a mounting plate, the bottom of which is connected to an adapter (12) via a connecting rod (11). The bottom of the adapter (12) is connected to a suction cup (13), and adjacent adapters (12) are connected via an air tube (14).

7. A hot-injection molded part trimming mechanism according to claim 6, characterized in that, A partition plate (5) is provided below the mounting plate. Multiple equally spaced screws (51) are fixedly connected to the bottom of the mounting plate. A fixing ring (52) is fixedly sleeved on the outside of each screw (51). The screw (51) passes through the partition plate (5) and is threadedly connected to a nut (53).

8. A hot-injection molded part trimming mechanism according to claim 7, characterized in that, The fixing ring (52) is located on the top of the partition plate (5), and a washer (54) is provided between the nut (53) and the partition plate (5) and sleeved on the outside of the screw (51).

9. A hot-injection molded part trimming mechanism according to claim 7, characterized in that, The outer surface of the partition plate (5) is coated with heat-insulating paint.

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