Material withdrawing needle material withdrawing mechanism

Abstract

The utility model discloses a kind of material pulling needle material withdrawal mechanisms, it is related to injection mould technical field, including upper fixed seat and the material withdrawal seat of slidingly being arranged on upper fixed seat, material withdrawal seat is provided in upper fixed seat with material pulling needle fixed plate and material pulling needle floating plate, material pulling needle floating plate slidingly is arranged on material pulling needle fixed plate and the sliding gap with the height H between the two is provided;Material pulling needle fixed plate is provided with first material pulling needle, and first material pulling needle is arranged in the first material pulling hole of material withdrawal seat;Material pulling needle floating plate is provided with second material pulling needle, and second material pulling needle is arranged in the second material pulling hole of material withdrawal seat;When the separation distance of material withdrawal seat and upper fixed seat is not less than H, first material pulling needle is separated with material briquetting;When the separation distance of material withdrawal seat and upper fixed seat is not less than 2H, second material pulling needle is separated with material briquetting.The utility model separates and reduces stripping force by batch material withdrawal of material pulling needle and material briquetting, achieves the purpose of reducing the number of switch, guarantees the stable production of injection molding equipment.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a material ejection mechanism for a material pulling pin. Background Technology

[0002] Currently, many products require a three-plate mold for dispensing during injection molding. When there are many dispensing points on the product, there are many more pull pins on the mold to pull the material out of the mold. As a result, the demolding force required on the stripper seat to separate the pull pins and the material is greater. In order to ensure that all pull pins can smoothly detach from the material, more opening and closing devices are needed. This results in an excessive number of opening and closing devices, which seriously affects the production stability of the injection molding equipment. Utility Model Content

[0003] In view of the above-mentioned defects in the existing technology, this utility model provides a material ejection mechanism for a material pulling pin. This material ejection mechanism disperses and reduces the demolding force by ejecting the material in batches from the material pulling pin and the material, thereby reducing the number of opening and closing devices and ensuring the stable production of the injection molding equipment.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A material ejection mechanism includes an upper fixed seat and a material ejection seat slidably mounted on the upper fixed seat via a pull rod structure. The upper fixed seat contains a material ejection pin fixing plate and a material ejection pin floating plate. The material ejection pin floating plate is slidably mounted on the material ejection pin fixing plate, with a sliding gap of height H between them. The material ejection seat has a first material ejection hole and a second material ejection hole that penetrate the material ejection seat and communicate with a material channel. The material ejection pin fixing plate has a first material ejection pin that passes through the first material ejection hole. The material ejection pin floating plate has a second material ejection pin that passes through the second material ejection hole. When the separation distance between the material ejection seat and the upper fixed seat is not less than H, the first material ejection pin separates from the material. When the separation distance between the material ejection seat and the upper fixed seat is not less than 2H, the second material ejection pin separates from the material.

[0006] The first and second pulling needles each include a head, a rod, and a connecting part connected to the material in sequence, and the height of the connecting part is h, where H ≥ h.

[0007] The material pulling needle fixing plate is slidably provided with a plurality of connecting components that pass through the material pulling needle fixing plate, and the material pulling needle floating plate is fixedly disposed on the connecting components.

[0008] The connecting assembly includes a height-equalizing sleeve and a connecting bolt. The material pulling needle fixing plate is provided with a height-equalizing sleeve mounting countersunk hole adapted to the height-equalizing sleeve, and the height-equalizing sleeve is slidably inserted into the height-equalizing sleeve mounting countersunk hole. The material pulling needle floating plate is provided with a bolt mounting countersunk hole adapted to the connecting bolt, and the connecting bolt passes through the bolt mounting countersunk hole and is threadedly fastened to the height-equalizing sleeve.

[0009] The upper fixing seat includes a panel and a mounting plate disposed on the panel. The mounting plate is provided with a mounting through hole. The material pulling needle fixing plate is installed in the mounting through hole and together with the panel forms a mounting cavity. The material pulling needle floating plate is located in the mounting cavity.

[0010] The material pulling needle fixing plate is provided with a first material pulling needle mounting countersunk hole adapted to the first material pulling needle. The head of the first material pulling needle is fixedly disposed in the first material pulling needle mounting countersunk hole, and the rod of the first material pulling needle passes through the first material pulling needle mounting countersunk hole and slides through the first material pulling hole.

[0011] The material pulling needle floating plate is provided with a second material pulling needle mounting countersunk hole adapted to the second material pulling needle. The material pulling needle fixing plate is provided with a through hole at the position corresponding to the second material pulling needle mounting countersunk hole. The head of the second material pulling needle is disposed in the second material pulling needle mounting countersunk hole. The rod of the second material pulling needle passes through the second material pulling needle mounting countersunk hole and the through hole and then slides through the second material pulling hole.

[0012] A sprue sleeve is provided between the upper fixed seat and the stripping seat. The sprue sleeve is pressed between the panel and the pull pin fixing plate, and the sprue sleeve presses the first pull pin into the first pull pin mounting hole.

[0013] The gating sleeve is equipped with a nozzle that communicates with the material channel.

[0014] The stripping seat includes a stripping plate and a material-saving block fixedly disposed on the stripping plate. The stripping plate is slidably disposed on the pull rod structure. The first material-pulling hole and the second material-pulling hole are both disposed on the material-saving block.

[0015] By adopting the above technical solution, the beneficial effects of this utility model are:

[0016] The material ejection mechanism provided by this utility model features a material ejection pin floating plate slidably mounted on the material ejection pin fixed plate with a sliding gap of height H between them. The first material ejection pin is mounted on the material ejection pin fixed plate, and the second material ejection pin is mounted on the material ejection pin floating plate. When the separation distance between the ejection seat and the upper fixed seat is not less than H, the first material ejection pin separates from the material. When the separation distance between the ejection seat and the upper fixed seat is not less than 2H, the second material ejection pin separates from the material. Therefore, the material ejection pin and the second material ejection pin are ejected in batches, reducing the demolding force. Compared with the prior art, the material ejection mechanism of this utility model disperses and reduces the demolding force by ejecting the material ejection pin and the material in batches, thereby reducing the number of opening and closing devices and ensuring the smooth and orderly demolding process, thus guaranteeing the stable production of the injection molding equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the material ejection mechanism of this utility model when the injection mold is closed;

[0018] Figure 2 yes Figure 1 A schematic diagram showing the state of the first feeding pin and the material being removed from the material.

[0019] Figure 3 yes Figure 1 A schematic diagram showing the state of the first and second pulling pins and the material being removed from the material.

[0020] Figure 4 yes Figure 1 A schematic diagram showing the connection between the first feeding needle and the material.

[0021] In the diagram: 1. Upper fixed seat; 11. Panel; 12. Mounting plate; 2. Stripper seat; 21. Stripper plate; 22. Material saving block; 3. Pull pin fixing plate; 4. Pull pin floating plate; 5. First pull pin; 51. Head; 52. Rod; 53. Connecting part; 6. Second pull pin; 7. Equal height sleeve; 8. Connecting bolt; 9. Sprue sleeve; 10. Nozzle; 13. Mother mold plate; 14. Mold core; 15. Material slurry. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0023] like Figures 1 to 4As shown, a material ejection mechanism for a material pulling needle is disclosed, including an upper fixed seat 1 and a material ejection seat 2 slidably disposed on the upper fixed seat 1 via a pull rod structure (not shown in the figure). The upper fixed seat 1 is provided with a material pulling needle fixing plate 3 and a material pulling needle floating plate 4. The material pulling needle floating plate 4 is slidably disposed on the material pulling needle fixing plate 3, and a sliding gap of height H is provided between the two. The material ejection seat 2 is provided with a first material pulling hole and a second material pulling hole that penetrate the material ejection seat 2 and communicate with the material channel. The material pulling needle fixing plate 3 is provided with a first material pulling needle 5, which passes through the first material pulling hole. The material pulling needle floating plate 4 is provided with a second material pulling needle 6, which passes through the second material pulling hole. When the separation distance between the material ejection seat 2 and the upper fixed seat 1 is not less than H, the first material pulling needle 5 separates from the material scrap 15. When the separation distance between the material ejection seat 2 and the upper fixed seat 1 is not less than 2H, the second material pulling needle 6 separates from the material scrap 15.

[0024] In this embodiment, the material ejection mechanism disperses and reduces the demolding force by ejecting the material in batches from the first material ejection pin 5, the second material ejection pin 6, and the material scrap 15. This reduces the number of openers and closers, ensuring a smooth and orderly demolding process and thus guaranteeing stable production of the injection molding equipment.

[0025] In this embodiment, both the first pull pin 5 and the second pull pin 6 include a head 51, a rod 52, and a connecting part 53 connected to the material 15 in sequence. The height of the connecting part 53 is h, where H ≥ h. This configuration ensures that the first pull pin 5 and the second pull pin 6 can smoothly detach from the material 15, ensuring a smooth and orderly demolding process.

[0026] Specifically, the connecting part 53 is truncated cone-shaped. When the material in the material channel solidifies, it forms a material cake 15 and wraps around the outside of the connecting part 53, thereby realizing the connection between the connecting part 53 and the material cake 15.

[0027] In this embodiment, a plurality of connecting components are slidably disposed on the material pulling needle fixing plate 3, and the material pulling needle floating plate 4 is fixedly disposed on the connecting components. This arrangement realizes the sliding connection between the material pulling needle floating plate 4 and the material pulling needle fixing plate 3.

[0028] Specifically, the connecting assembly includes a height-equalizing sleeve 7 and a connecting bolt 8. The pull pin fixing plate 3 has a countersunk hole for mounting the height-equalizing sleeve 7, which is slidably inserted into the countersunk hole. The pull pin floating plate 4 has a countersunk hole for mounting the connecting bolt 8, which passes through the countersunk hole and is threadedly fastened to the height-equalizing sleeve 7. This configuration achieves a fixed connection between the pull pin floating plate 4 and the height-equalizing sleeve 7.

[0029] In this embodiment, the upper fixed base 1 includes a panel 11 and a mounting plate 12 disposed on the panel 11. The mounting plate 12 is provided with a mounting through hole. The pull needle fixing plate 3 is installed in the mounting through hole and together with the panel 11 forms a mounting cavity. The pull needle floating plate 4 is located in the mounting cavity.

[0030] Specifically, the pull needle fixing plate 3 is provided with a first pull needle mounting countersunk hole adapted to the first pull needle 5. The head 51 of the first pull needle 5 is fixedly installed in the first pull needle mounting countersunk hole, and the rod 52 of the first pull needle 5 passes through the first pull needle mounting countersunk hole and slides through the first pull hole. The pull needle floating plate 4 is provided with a second pull needle mounting countersunk hole adapted to the second pull needle 6. The pull needle fixing plate 3 is provided with a through hole at the position corresponding to the second pull needle mounting countersunk hole. The head 51 of the second pull needle 6 is installed in the second pull needle mounting countersunk hole, and the rod 52 of the second pull needle 6 passes through the second pull needle mounting countersunk hole and the through hole and slides through the second pull hole.

[0031] In this embodiment, a sprue sleeve 9 is provided between the upper fixed seat 1 and the unloading seat 2. The sprue sleeve 9 is pressed between the panel 11 and the pull needle fixing plate 3, and the sprue sleeve 9 presses the first pull needle 5 into the first pull needle mounting countersunk hole. At the same time, a nozzle 10 connected to the material channel is provided inside the sprue sleeve 9.

[0032] In this embodiment, the stripping seat 2 includes a stripping plate 21 and a material-saving block 22 fixedly disposed on the stripping plate 21. The stripping plate 21 is slidably disposed on the pull rod structure, and the first material-pulling hole and the second material-pulling hole are both disposed on the material-saving block 22.

[0033] When the injection mold opens, the mother mold plate 13 separates from the stripper seat 2 first. The first pull pin 5 and the second pull pin 6 pull the sprue 15 out of the mold core 14 of the mother mold plate 13, thus separating the sprue 15 from the product. Then, the stripper seat 2 separates from the upper fixed seat 1, thus separating the sprue 15 from the first pull pin 5 and the second pull pin 6. When the separation distance between the stripper seat 2 and the upper fixed seat 1 is not less than H, the first pull pin 5 separates from the sprue 15. Figure 2 As shown; when the separation distance between the stripping seat 2 and the upper fixed seat 1 is not less than 2H, the second pulling needle 6 separates from the material slab 15, as shown. Figure 3 As shown, this achieves batch ejection of the first ejector pin 5, the second ejector pin 6, and the material scrap 15; when the injection mold closes, the ejector pin floating plate 4 resets, as shown. Figure 1 As shown.

[0034] The above describes in detail one embodiment of the material ejection mechanism of this utility model. Many other embodiments are also described but will not be elaborated upon here. In summary, the material ejection mechanism of this utility model disperses and reduces the demolding force by ejecting the material in batches from the material ejection pin and the slurry, thereby reducing the number of opening and closing devices and ensuring stable production of the injection molding equipment.

[0035] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort shall fall within the protection scope of this utility model.

Claims

1. A material ejection mechanism for a material pulling pin, comprising an upper fixed seat and a material ejection seat slidably disposed on the upper fixed seat via a pull rod structure, characterized in that, The upper fixed seat is provided with a material pulling needle fixing plate and a material pulling needle floating plate. The material pulling needle floating plate is slidably disposed on the material pulling needle fixing plate and a sliding gap of height H is provided between the two. The material unloading seat is provided with a first material pulling hole and a second material pulling hole that penetrate the material unloading seat and communicate with the material channel. The material pulling needle fixing plate is provided with a first material pulling needle that passes through the first material pulling hole. The material pulling needle floating plate is provided with a second material pulling needle that passes through the second material pulling hole. When the separation distance between the stripping seat and the upper fixed seat is not less than H, the first pulling needle separates from the material; when the separation distance between the stripping seat and the upper fixed seat is not less than 2H, the second pulling needle separates from the material.

2. The material feeding and ejection mechanism according to claim 1, characterized in that, Both the first and second pulling needles include a head, a rod, and a connecting part connected to the material in sequence, wherein the height of the connecting part is h, and H≥h.

3. The material feeding and ejection mechanism according to claim 1, characterized in that, Multiple connecting components are slidably disposed on the material pulling needle fixing plate, and the material pulling needle floating plate is fixedly disposed on the connecting components.

4. The material feeding and ejection mechanism according to claim 3, characterized in that, The connecting assembly includes a height-equalizing sleeve and a connecting bolt. The material pulling pin fixing plate is provided with a height-equalizing sleeve mounting countersunk hole adapted to the height-equalizing sleeve, and the height-equalizing sleeve is slidably inserted into the height-equalizing sleeve mounting countersunk hole. The material pulling pin floating plate is provided with a bolt mounting countersunk hole adapted to the connecting bolt, and the connecting bolt passes through the bolt mounting countersunk hole and is threadedly fastened to the height-equalizing sleeve.

5. The material feeding and ejection mechanism according to claim 2, characterized in that, The upper fixing base includes a panel and a mounting plate disposed on the panel. The mounting plate is provided with a mounting through hole. The material pulling needle fixing plate is installed in the mounting through hole and together with the panel forms a mounting cavity. The material pulling needle floating plate is located in the mounting cavity.

6. The material feeding and ejection mechanism according to claim 5, characterized in that, The material pulling needle fixing plate is provided with a first material pulling needle mounting countersunk hole adapted to the first material pulling needle. The head of the first material pulling needle is fixedly installed in the first material pulling needle mounting countersunk hole, and the rod of the first material pulling needle passes through the first material pulling needle mounting countersunk hole and slides through the first material pulling hole.

7. The material feeding and ejection mechanism according to claim 5, characterized in that, The material pulling needle floating plate is provided with a second material pulling needle mounting countersunk hole adapted to the second material pulling needle. The material pulling needle fixing plate is provided with a through hole at the position corresponding to the second material pulling needle mounting countersunk hole. The head of the second material pulling needle is disposed in the second material pulling needle mounting countersunk hole. The rod of the second material pulling needle passes through the second material pulling needle mounting countersunk hole and the through hole and then slides through the second material pulling hole.

8. The material feeding and ejection mechanism according to claim 6, characterized in that, A sprue sleeve is provided between the upper fixed seat and the stripping seat. The sprue sleeve is pressed between the panel and the pull pin fixing plate, and the sprue sleeve presses the first pull pin into the first pull pin mounting countersunk hole.

9. The material feeding and ejection mechanism according to claim 8, characterized in that, The gating sleeve is equipped with a nozzle that communicates with the material channel.

10. The material feeding mechanism for the feeding pin according to any one of claims 1 to 9, characterized in that, The stripping seat includes a stripping plate and a material-saving block fixedly disposed on the stripping plate. The stripping plate is slidably disposed on the pull rod structure. The first material-pulling hole and the second material-pulling hole are both disposed on the material-saving block.

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