A mold closing structure with a built-in ejection mechanism

Abstract

The utility model relates to the built -in die structure field of ejection mechanism, especially a kind of built -in die structure of ejection mechanism.It include lower mould, the upper surface of lower mould is fixedly connected with four positioning rods, the circular arc surface sliding connection of positioning rod has moving ring, the circular arc surface fixed connection of four moving rings has upper mould, the lower surface of upper mould is fixedly connected with moving plate, the upper surface of lower mould is equipped with ejection mechanism, the ejection mechanism includes two installation grooves and fixed plate, two installation grooves are all set on lower mould, the fixed plate is fixedly connected with lower mould.The utility model provides a kind of built -in die structure of ejection mechanism solves the disadvantage that the injection-molded part will rub with the inner wall of injection-molded groove in the process of ejecting injection-molded part due to the fact that the existing ejection device is not installed with anti-deformation device, when the friction is larger, it will cause the deformation of injection-molded part.

Description

Technical Field

[0001] This utility model relates to the field of mold closing structures built into ejection mechanisms, and more particularly to a mold closing structure built into an ejection mechanism. Background Technology

[0002] The mold clamping structure built into the ejection mechanism is a common type of mold clamping structure built into the ejection mechanism, mainly used to eject the molded injection parts.

[0003] Existing technologies, such as the utility model patent with publication number CN217916609U, disclose a mold-closing structure built into the ejection mechanism. This patent uses a head plate fixed to the body of the injection molding machine; a second plate movably disposed on one side of the head plate, with a pull rod between the second plate and the head plate, allowing the second plate to move towards or away from the head plate via the pull rod; a mold-locking mechanism is connected to the side of the second plate away from the head plate, and the mold-locking mechanism includes a mold-locking cylinder and a brake component. The mold-locking cylinder is fixed to the second plate and has a... The mold-locking piston is connected to the brake assembly, which can engage the pull rod. The ejection mechanism is located inside the second plate, and its output end can extend out of the second plate. The mold-shifting mechanism includes a mold-shifting cylinder, the piston rod of which is connected to the side of the second plate away from the head plate. The mold-locking mechanism is arranged on one side of the second plate, and the brake assembly can be moved using the mold-locking cylinder to adjust the position of the brake nut and the pull rod, avoiding interference with the injection components. At the same time, by integrating the ejection mechanism into the second plate, the overall design becomes simpler.

[0004] The inventors discovered in their daily work that during the ejection process of molded injection parts, the existing ejection device does not have an anti-deformation device installed. As a result, the injection parts rub against the inner wall of the injection tank during the ejection process, and when the friction is too large, it will cause the injection parts to deform. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the lack of an anti-deformation device in the ejection mechanism leads to friction between the injection molded part and the inner wall of the injection tank during ejection, which can cause deformation when the friction is significant. This invention proposes a mold closing structure with an integrated ejection mechanism.

[0006] To solve the above technical problems, this utility model provides a mold closing structure with an internal ejection mechanism, comprising: a lower mold, four positioning rods fixedly connected to the upper surface of the lower mold, movable rings slidably connected to the arc surfaces of the positioning rods, an upper mold fixedly connected to the arc surfaces of the four movable rings, a movable plate fixedly connected to the lower surface of the upper mold, an ejection structure provided on the upper surface of the lower mold, the ejection structure including two mounting slots and a fixed plate, both mounting slots being formed on the lower mold, the fixed plate being fixedly connected to the lower mold, an adjusting plate slidably connected to the inner wall of the mounting slots, a half mold fixedly connected to the upper surface of the adjusting plate, and a hydraulic system fixedly connected to the inner wall of the fixed plate. The mold has four connecting slots on its inner wall, and telescopic rods are fixedly connected to the inner walls of the connecting slots. Top posts are fixedly connected to the output ends of the four telescopic rods, and the top posts abut against the fixed plate. Springs are fitted onto the arc surfaces of the telescopic rods, and the two ends of the springs are fixedly connected to the connecting slots and the top posts, respectively. The inner wall of the semi-mold has an auxiliary slot and an injection slot, which are interconnected. A connecting plate is fixedly connected to the inner wall of the auxiliary slot, and a slider is fixedly connected to the inclined surface of the connecting plate. Two positioning plates are fixedly connected to the arc surface of the top post. Limiting slots are formed on the inner walls of the positioning plates, and these limiting slots are slidably connected to the sliders. The auxiliary slots are slidably connected to the fixed plate.

[0007] The effect achieved by the above components is that when personnel need to eject the injection-molded parts, the hydraulic rod can be activated to move the ejector column upward. During the upward movement of the ejector column, the two half molds will move away from the ejector column, thereby preventing the mold from deforming during the ejection process after molding.

[0008] Preferably, a protective pad is fixedly connected to the output end of the hydraulic rod, and the protective pad abuts against the top column.

[0009] The effect achieved by the above components is that the protective pad can protect the top column and prevent the top column from directly contacting the output end of the hydraulic rod.

[0010] Preferably, a limiting rod is fixedly connected to the inner wall of the limiting groove, and the limiting rod is slidably connected to the slider.

[0011] The effect achieved by the above components is that the limiting rod can limit the slider and prevent the slider from being misaligned during the sliding process on the inner wall of the limiting groove.

[0012] Preferably, the slider is a stainless steel block.

[0013] The effect achieved by the above components is that the stainless steel block has high strength and good wear resistance, which can prevent the slider from deforming during short-term use.

[0014] Preferably, the upper surface of the lower mold is provided with an auxiliary structure, the auxiliary structure including a base plate, a fixing rod fixedly connected to the upper surface of the base plate, a first gear and a second gear rotatably connected to the upper surface of the base plate, the first gear and the second gear meshing, a protective sleeve fixedly connected to the side of the fixing rod away from the base plate, a motor fixedly connected to the inner wall of the protective sleeve, the output end of the motor fixedly connected to the second gear, a telescopic plate fixedly connected to the upper surface of the first gear, a rotating plate fixedly connected to the output end of the telescopic plate, a compression spring sleeved on the surface of the telescopic plate, the two ends of the compression spring being fixedly connected to the first gear and the rotating plate respectively, a cylinder fixedly connected to the upper surface of the rotating plate, two protective blocks fixedly connected to the upper surface of the cylinder, and a top block fixedly connected to the output end of the cylinder.

[0015] The effect achieved by the above-mentioned components is that after the molded injection part is ejected from the injection mold, the motor and cylinder can be started to push the molded injection part out between the upper mold and the lower mold, thereby preventing personnel from taking the molded injection part out between the upper mold and the lower mold by hand, thus improving personnel safety.

[0016] Preferably, a positioning block is fixedly connected to the upper surface of the first gear, and a baffle is fixedly connected to the upper surface of the base plate, the baffle abutting against the positioning block.

[0017] The effect achieved by the above components is that the positioning block and the baffle can limit the first gear, making it convenient for personnel to quickly rotate the cylinder to the appropriate position.

[0018] Preferably, the inner wall of the protective cover has a plurality of heat dissipation holes, which are evenly distributed on the arc surface of the protective cover.

[0019] The effect achieved by the above components is that the heat dissipation holes can help the motor dissipate heat, thereby extending the service life of the motor.

[0020] Compared with related technologies, the mold closing structure built into the ejection mechanism provided by this utility model has the following beneficial effects:

[0021] This utility model provides a mold closing structure built into the ejection mechanism. By setting the ejection structure, when personnel need to eject the part after injection molding, the part can be ejected through the ejection structure, which can prevent the part from rubbing against the inside of the injection mold during the ejection process, thereby improving the yield of injection mold.

[0022] By setting up an auxiliary structure, when personnel need to remove the ejected injection molded part from between the upper and lower molds, the auxiliary structure can be used to eject the molded injection molded part from between the upper and lower molds, thereby improving the installation efficiency for personnel. Attached Figure Description

[0023] Figure 1 A schematic diagram of a mold closing structure built into an ejection mechanism provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows the structure of the ejector mechanism.

[0025] Figure 3 for Figure 2 The diagram shows the structural schematic of the cross-sectional structure.

[0026] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A shown;

[0027] Figure 5 for Figure 1 The diagram shows the structure of the auxiliary structure.

[0028] Figure 6 for Figure 5 The diagram shows the enlarged structure at point B.

[0029] The diagram labels are as follows: 1. Lower mold; 2. Positioning rod; 3. Ejection structure; 301. Auxiliary groove; 302. Connecting plate; 303. Slider; 304. Positioning plate; 305. Limiting groove; 306. Limiting rod; 307. Fixing plate; 308. Hydraulic rod; 309. Protective pad; 310. Connecting groove; 311. Telescopic rod; 312. Spring; 313. Half mold; 314. Mounting groove; 315. Adjusting plate; 316. Injection molding. 317. Groove; 4. Top column; 4. Auxiliary structure; 401. Base plate; 402. First gear; 403. Compression spring; 404. Baffle; 405. Positioning block; 406. Telescopic plate; 407. Fixing rod; 408. Second gear; 409. Protective sleeve; 410. Motor; 411. Rotating plate; 412. Cylinder; 413. Protective block; 414. Top block; 415. Heat dissipation hole; 5. Upper mold; 6. Moving ring; 7. Moving plate. Detailed Implementation

[0030] 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 illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0032] Please see Figure 1The present invention provides a mold closing structure with an ejection mechanism, comprising: a lower mold 1, four positioning rods 2 fixedly connected to the upper surface of the lower mold 1, a moving ring 6 slidably connected to the arc surface of the positioning rods 2, an upper mold 5 fixedly connected to the arc surface of the four moving rings 6, a moving plate 7 fixedly connected to the lower surface of the upper mold 5, an ejection structure 3 provided on the upper surface of the lower mold 1, and an auxiliary structure 4 provided on the upper surface of the lower mold 1.

[0033] In the embodiments of this utility model, please refer to Figures 2 to 4 The ejector structure 3 includes two mounting slots 314 and a fixing plate 307. Both mounting slots 314 are located on the lower mold 1. The fixing plate 307 is fixedly connected to the lower mold 1. An adjusting plate 315 is slidably connected to the inner wall of the mounting slots 314. A half-mold 313 is fixedly connected to the upper surface of the adjusting plate 315. A hydraulic rod 308 is fixedly connected to the inner wall of the fixing plate 307. Four connecting slots 310 are provided on the inner wall of the fixing plate 307. Telescopic rods 311 are fixedly connected to the inner wall of the connecting slots 310. Top posts 317 are fixedly connected to the output ends of the four telescopic rods 311. The top posts 317 abut against the fixing plate 307. A spring 312 is fitted onto the arc surface of the retraction rod 311. The two ends of the spring 312 are fixedly connected to the connecting groove 310 and the top post 317, respectively. An auxiliary groove 301 and an injection groove 316 are provided on the inner wall of the half mold 313. The auxiliary groove 301 and the injection groove 316 are interconnected. A connecting plate is fixedly connected to the inner wall of the auxiliary groove 301. A slider 303 is fixedly connected to the inclined surface of the connecting plate 302. Two positioning plates 304 are fixedly connected to the arc surface of the top post 317. A limiting groove 305 is provided on the inner wall of the positioning plate 304. The limiting groove 305 is slidably connected to the slider 303. The auxiliary groove 301 is slidably connected to the fixing plate 307. When personnel need to eject the injection-molded parts, the hydraulic rod 308 is activated, causing the ejector pin 317 to move upward. During this upward movement, the two mold halves 313 move away from the ejector pin 317, preventing deformation of the mold during ejection. A protective pad 309 is fixedly connected to the output end of the hydraulic rod 308, abutting against the ejector pin 317. The protective pad 309 protects the ejector pin 317, preventing direct contact between it and the output end of the hydraulic rod 308. A limiting rod 306 is fixedly connected to the inner wall of the limiting groove 305, slidingly connected to the slider 303. The limiting rod 306 limits the slider 303, preventing misalignment during sliding within the limiting groove 305. The slider 303 is made of stainless steel. Stainless steel blocks have high strength and good wear resistance, which can prevent the slider 303 from deforming during short-term use;

[0034] In the embodiments of this utility model, please refer to Figure 5 and Figure 6 The auxiliary structure 4 includes a base plate 401. A fixing rod 407 is fixedly connected to the upper surface of the base plate 401. A first gear 402 and a second gear 408 are rotatably connected to the upper surface of the base plate 401. The first gear 402 and the second gear 408 mesh with each other. A protective sleeve 409 is fixedly connected to the side of the fixing rod 407 away from the base plate 401. A motor 410 is fixedly connected to the inner wall of the protective sleeve 409. The output end of the motor 410 is fixedly connected to the second gear 408. A telescopic plate 406 is fixedly connected to the upper surface of the first gear 402. A rotating plate 411 is fixedly connected to the output end of the telescopic plate 406. A compression spring 403 is sleeved on the surface of the telescopic plate 406. The two ends of the compression spring 403 are fixedly connected to the first gear 402 and the rotating plate 411, respectively. A cylinder 412 is fixedly connected to the upper surface of the rotating plate 411. Two protective blocks 413 are fixedly connected to the upper surface of the cylinder 412. A top block 414 is fixedly connected to the output end of the cylinder 412. After the molded injection part is ejected from the injection groove 316, the motor 410 and cylinder 412 can be used to push the molded injection part out between the upper mold 5 and the lower mold 1. This prevents personnel from manually removing the molded injection part from between the upper mold 5 and the lower mold 1, improving personnel safety. A positioning block 405 is fixedly connected to the upper surface of the first gear 402, and a baffle 404 is fixedly connected to the upper surface of the base plate 401. The baffle 404 abuts against the positioning block 405. The positioning block 405 and the baffle 404 can limit the first gear 402, allowing personnel to quickly rotate the cylinder 412 to the appropriate position. Several heat dissipation holes 415 are opened on the inner wall of the protective sleeve 409, and the heat dissipation holes 415 are evenly opened on the arc surface of the protective sleeve 409. The heat dissipation holes 415 can assist the motor 410 in heat dissipation, thereby improving the service life of the motor 410.

[0035] The working principle of the mold closing structure built into the ejection mechanism provided by this utility model is as follows: When personnel need to eject the part after injection molding, they can first activate the hydraulic rod 308. The output end of the hydraulic rod 308 drives the protective pad 309 to move upward. The protective pad 309 can protect the ejector pin 317 and prevent the ejector pin 317 from directly contacting the output end of the hydraulic rod 308. Then, the protective pad 309 drives the ejector pin 317 to move upward. The ejector pin 317 drives the output ends of the four telescopic rods 311 and the two positioning plates 304 to move upward. The ejector pin 317 also drives the four springs 312 to stretch. The positioning plates 304 drive the limiting rod 306 to move upward. The limiting rod 306 can limit the slider 303 and prevent the slider 303 from being inside the limiting groove 305. During the sliding process, misalignment occurs, and then the positioning plate 304 also drives the slider 303 to slide on the arc surface of the limiting rod 306. The slider 303 drives the connecting plate 302 to move away from the top post 317. The connecting plate 302 drives the half mold 313 to move away from the top post 317. The half mold 313 drives the adjusting plate 315 to move away from the top post 317 until the top post 317 drives the molded part to slide out of the injection groove 316. The slider 303 is a stainless steel block. The stainless steel block has high strength and good wear resistance, which can prevent the slider 303 from deforming during short-term use. Then, during the retraction of the hydraulic rod 308, the four springs 312 will drive the top post 317 to move downward until the top post 317 abuts against the fixed plate 307.

[0036] Additionally, after the injection molded part is formed, the upper mold 5 will move upward. During this upward movement, the compression spring 403 will rebound, causing the rotating plate 411 to move upward. The rotating plate 411 will then move the output end of the cylinder 412 and the telescopic plate 406 upward. The cylinder 412 will also move the two protective blocks 413 and the top block 414 upward until the cylinder 412 reaches the appropriate position. After the molded part is ejected from the injection molded groove 316, the operator can start the motor 410. The motor 410 will drive the second gear 408 to rotate, which in turn will drive the first gear 402 to rotate. The first gear 402 will then drive the compression spring 403, the telescopic plate 406, and the positioning block 405 to rotate. The telescopic plate 406 drives the rotating plate 411 to rotate, and the rotating plate 411 drives the two protective blocks 413 and the top block 414 to rotate until the positioning block 405 abuts against the baffle 404. The positioning block 405 and the baffle 404 can limit the first gear 402, which can facilitate the personnel to quickly rotate the cylinder 412 to the appropriate position. Then, the personnel start the cylinder 412, and the output end of the cylinder 412 drives the top block 414 to move, so that the top block 414 moves closer to the injection part, until the injection part moves out of the space between the upper mold 5 and the lower mold 1. The heat dissipation holes 415 opened on the inner wall of the protective sleeve 409 can assist the motor 410 in heat dissipation, thereby improving the service life of the motor 410.

[0037] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mold clamping structure built into an ejection mechanism, characterized in that, include: A lower mold (1) has four positioning rods (2) fixedly connected to its upper surface. The arc surfaces of the positioning rods (2) are slidably connected to moving rings (6). The arc surfaces of the four moving rings (6) are fixedly connected to an upper mold (5). The lower surface of the upper mold (5) is fixedly connected to a moving plate (7). The upper surface of the lower mold (1) is provided with an ejection structure (3). The ejection structure (3) includes two mounting slots (314) and a fixing plate (307). The mounting slots (314) are all opened on the lower mold (1). The fixing plate (307) is fixedly connected to the lower mold (1). An adjusting plate (315) is slidably connected to the inner wall of the mounting slot (314). A half mold (313) is fixedly connected to the upper surface of the adjusting plate (315). A hydraulic rod (308) is fixedly connected to the inner wall of the fixing plate (307). Four connecting slots (310) are opened on the inner wall of the fixing plate (307). The inner wall of the connecting slots (310) is fixed. The four telescopic rods (311) are connected to a top post (317) at their output ends. The top post (317) abuts against a fixed plate (307). A spring (312) is fitted on the arc surface of each telescopic rod (311). The two ends of the spring (312) are fixedly connected to the connecting groove (310) and the top post (317) respectively. An auxiliary groove (301) and an injection groove (316) are provided on the inner wall of the semi-mold (313). The auxiliary groove (301) is connected to the top post (317) at its output ends. 1) It is interconnected with the injection tank (316). The inner wall of the auxiliary tank (301) is fixedly connected with a connecting plate. The inclined surface of the connecting plate (302) is fixedly connected with a slider (303). The arc surface of the top column (317) is fixedly connected with two positioning plates (304). The inner wall of the positioning plate (304) is provided with a limiting groove (305). The limiting groove (305) is slidably connected with the slider (303). The auxiliary tank (301) is slidably connected with the fixing plate (307).

2. The mold clamping structure built into the ejection mechanism according to claim 1, characterized in that, The output end of the hydraulic rod (308) is fixedly connected to a protective pad (309), which abuts against the top column (317).

3. The mold clamping structure built into the ejection mechanism according to claim 1, characterized in that, The inner wall of the limiting groove (305) is fixedly connected to a limiting rod (306), and the limiting rod (306) is slidably connected to the slider (303).

4. The mold clamping structure built into the ejection mechanism according to claim 1, characterized in that, The slider (303) is a stainless steel block.

5. The mold closing structure built into the ejection mechanism according to claim 1, characterized in that, The upper surface of the lower mold (1) is provided with an auxiliary structure (4), the auxiliary structure (4) includes a base plate (401), a fixing rod (407) is fixedly connected to the upper surface of the base plate (401), a first gear (402) and a second gear (408) are rotatably connected to the upper surface of the base plate (401), the first gear (402) and the second gear (408) mesh with each other, a protective sleeve (409) is fixedly connected to the side of the fixing rod (407) away from the base plate (401), a motor (410) is fixedly connected to the inner wall of the protective sleeve (409), and the output end of the motor (410) is connected to the second gear (408). A gear (408) is fixedly connected. A telescopic plate (406) is fixedly connected to the upper surface of the first gear (402). A rotating plate (411) is fixedly connected to the output end of the telescopic plate (406). A compression spring (403) is sleeved on the surface of the telescopic plate (406). The two ends of the compression spring (403) are fixedly connected to the first gear (402) and the rotating plate (411) respectively. A cylinder (412) is fixedly connected to the upper surface of the rotating plate (411). Two protective blocks (413) are fixedly connected to the upper surface of the cylinder (412). A top block (414) is fixedly connected to the output end of the cylinder (412).

6. The mold clamping structure built into the ejection mechanism according to claim 5, characterized in that, A positioning block (405) is fixedly connected to the upper surface of the first gear (402), and a baffle (404) is fixedly connected to the upper surface of the base plate (401), with the baffle (404) abutting against the positioning block (405).

7. The mold clamping structure built into the ejection mechanism according to claim 5, characterized in that, The inner wall of the protective sleeve (409) is provided with a number of heat dissipation holes (415), and the number of heat dissipation holes (415) are evenly opened on the arc surface of the protective sleeve (409).

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