Injection mold with quick demolding structure

Abstract

The utility model relates to mould technical field, concretely relates to a kind of injection mould with quick demoulding structure, including front mould, the lower portion of front mould is provided with rear mould, rear mould is provided with forming cavity, rear mould is provided with through slot on the side close to forming cavity, and through slot penetrates the bottom of rear mould;Forming cavity is provided with scraper;Forming cavity is provided with closed assembly, and closed assembly is used to prevent the material from leaking from through slot melt. By lifting assembly drive scraper up, and transmission mechanism drives scraper rotation, make scraper can scrape waste in forming cavity, simultaneously, waste is discharged by through slot, eliminate the sticking hidden danger of injection-molded part and cavity wall caused by residual waste, ensure that quick ejection demoulding process is smooth, solve the technical problem that the waste that the cleaning brush sweeps in injection mould falls is accumulated in injection hole, influence injection-molded part quality and increase demoulding jam risk, lengthen operation interval and reduce production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to an injection mold with a quick demolding structure. Background Technology

[0002] Injection molds are tools used to produce plastic parts. They are commonly used in the production of various plastic products. Injection molds work by injecting molten plastic material into a mold cavity, which then cools and solidifies to obtain the desired plastic part. Injection molds can be used for large-scale automated production, enabling the rapid production of large quantities of identical plastic parts. Furthermore, the design of injection molds allows for the automation of the injection molding process, reducing manual intervention and improving production efficiency and product consistency. Chinese Patent Publication No. CN215095287U discloses an injection mold with a rapid ejection and demolding structure, including a base, a first side plate and a second side plate fixedly connected to the two sides of the top of the base, the top of the first side plate and the top of the second side plate fixedly disposed on the two sides of the bottom of the top seat, and a first cylinder fixedly installed in the middle of the top of the top seat. This utility model discloses an injection mold with a rapid ejection and demolding structure. This device can simultaneously inject and mold several products, which can greatly improve production efficiency. The second cylinder simultaneously pushes several ejector parts upward to eject the injection molded parts, avoiding the products from getting stuck in the injection holes and being unable to be removed. A cleaning brush is used to clean the inside of the injection holes to facilitate subsequent injection operations. The first cylinder pushes several sealing parts downward to seal several injection holes. The aforementioned patent mentions that the device can clean the inside of the injection hole with a cleaning brush to ensure the smooth progress of subsequent injection operations. However, the waste material swept off by the cleaning brush falls directly into the injection hole, causing waste material to accumulate inside. The accumulated waste material is prone to mixing with the newly injected raw material, affecting the molding quality of the injection molded part. At the same time, the residual waste material increases the risk of adhesion between the injection molded part and the inner wall of the injection hole, causing jamming during demolding, hindering the smooth progress of the rapid ejection demolding process, thereby prolonging the operation interval and reducing production efficiency. Therefore, we propose an injection mold with a rapid demolding structure. Utility Model Content

[0003] To address the aforementioned issues, an injection mold with a rapid demolding structure is provided. A lifting component moves the scraper upwards, and a transmission mechanism drives the scraper to rotate, allowing it to scrape off waste material from the molding cavity. Simultaneously, the waste material is discharged through a channel, eliminating the risk of molded parts sticking to the cavity wall due to residual waste material. This ensures a smooth rapid ejection and demolding process, solving the technical problem of waste material swept off by the cleaning brush accumulating in the injection hole, affecting the quality of the molded parts, increasing the risk of demolding jamming, extending operation intervals, and reducing production efficiency.

[0004] To address the problems of existing technologies, this utility model provides an injection mold with a quick demolding structure, including a front mold, a rear mold below the front mold, a molding cavity in the rear mold, a through groove on the side of the rear mold near the molding cavity, the through groove penetrating the bottom of the rear mold; a scraper is provided inside the molding cavity; a sealing component is provided inside the molding cavity to prevent molten material from leaking from the through groove; a lifting component is provided on the rear mold to drive the scraper and the sealing component to move vertically; a transmission mechanism is provided between the scraper and the lifting component to drive the scraper to rotate along the cavity wall of the molding cavity.

[0005] Preferably, the scraper is fixedly connected to a connecting frame, and a cleaning component is provided below the scraper, which is rotatably mounted on the connecting frame.

[0006] Preferably, the sealing assembly includes a sealing seat, a support rod, and a mounting groove; the sealing seat is slidably disposed within the molding cavity; the upper end of the support rod is fixedly connected to the sealing seat; the mounting groove is formed on the side of the connecting frame near the support rod, and one end of the support rod passes through the mounting groove and is fixedly connected to the support frame.

[0007] Preferably, the lifting assembly includes a first power component and a support frame; the first power component is fixedly installed on the rear mold and is used to provide power for the vertical movement of the connecting frame; the support frame is fixedly connected to the output end of the first power component, and the connecting frame is rotatably disposed within the support frame.

[0008] Preferably, the transmission mechanism includes a revolution component and a rotation component; the revolution component is disposed between the connecting frame and the support frame, and is used to drive the scraper and the cleaning component to revolve along the cavity wall of the molding cavity; the rotation component is disposed between the cleaning component and the support frame, and is used to drive the cleaning component to revolve along the cavity wall of the molding cavity while rotating.

[0009] Preferably, the revolution component includes a second power component and a synchronization component; the second power component is fixedly mounted on the support frame and is used to provide rotational power for the scraper and the cleaning component; the synchronization component is rotatably mounted on the support frame, the working end of the synchronization component is fixedly connected to the connecting frame, and the working end of the synchronization component away from the connecting frame is fixedly connected to the output end of the second power component.

[0010] Preferably, the rotating component includes a toothed disc and a toothed ring; the toothed disc is rotatably mounted on the connecting frame and is fixedly connected to the cleaning component; the toothed ring is fixedly connected to the support frame and meshes with the toothed disc.

[0011] Preferably, the self-rotating component further includes an anti-interference component, which is used to prevent injection molding waste from affecting gear meshing. The anti-interference component includes a connecting cover and a fixing cover; the connecting cover is sleeved on the gear plate and is rotatably connected to the gear plate; the fixing cover is sleeved on the gear ring and is fixedly connected to the support frame and is rotatably connected to the connecting cover.

[0012] The advantages of this utility model compared to the prior art are: 1. The lifting component drives the scraper to move upward, and the transmission mechanism drives the scraper to rotate, so that the scraper can scrape off the waste material in the molding cavity. At the same time, the waste material is discharged through the channel, eliminating the risk of the injection molded part sticking to the cavity wall caused by residual waste material. This ensures a smooth ejection and demolding process and solves the technical problem of waste material swept off by the cleaning brush in the injection mold accumulating in the injection hole, affecting the quality of the injection molded part, increasing the risk of demolding jamming, extending the operation interval and reducing production efficiency.

[0013] 2. The cleaning component is driven by a transmission mechanism to complete a compound motion of revolution and rotation within the molding cavity, ensuring that waste material in each area of ​​the cavity wall is swept away, avoiding cleaning dead corners, enhancing the peeling effect on tightly attached waste material, and preventing waste material from re-attaching to the cavity wall or accumulating. This solves the technical problems of waste material easily re-attaching to the injection mold, which leads to subsequent injection molding material contamination, reduced injection molded part molding quality, and increased demolding resistance and jamming risk. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the front mold, rear mold, and their connection structure of an injection mold with a quick demolding structure.

[0015] Figure 2 This is a three-dimensional schematic diagram of the first power component and support frame of an injection mold with a quick demolding structure, and their connection structure.

[0016] Figure 3 This is a three-dimensional schematic diagram of the connecting frame and sealing seat of an injection mold with a quick demolding structure and its connection structure.

[0017] Figure 4 This is a three-dimensional schematic diagram of the scraper and cleaning parts of an injection mold with a quick demolding structure and their connection structure.

[0018] Figure 5 It is an injection mold with a quick-release mechanism. Figure 2 Enlarged diagram of point A in the middle.

[0019] Figure 6 It is an injection mold with a quick-release mechanism. Figure 3 Enlarged diagram of point B in the middle.

[0020] Figure 7It is an injection mold with a quick-release mechanism. Figure 3 Enlarged diagram of point C in the middle.

[0021] The following are the labels in the diagram: 1. Front mold; 11. Rear mold; 12. Molding cavity; 2. Through groove; 21. Scraper; 22. Connecting frame; 23. Cleaning component; 24. Sealing seat; 25. Support rod; 26. Installation groove; 27. First power component; 28. Support frame; 29. ​​Second power component; 210. Synchronization assembly; 211. Gear disc; 212. Gear ring; 213. Connecting cover; 214. Fixing cover. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0023] See Figure 1 and Figure 2 As shown, an injection mold with a quick demolding structure includes a front mold 1, a rear mold 11 below the front mold 1, a molding cavity 12 in the rear mold 11, and a through groove 2 on the side of the rear mold 11 near the molding cavity 12, the through groove 2 penetrating the bottom of the rear mold 11; a scraper 21 is provided in the molding cavity 12; a sealing component is provided in the molding cavity 12 to prevent molten material from leaking from the through groove 2; a lifting component is provided on the rear mold 11 to drive the scraper 21 and the sealing component to move vertically; a transmission mechanism is provided between the scraper 21 and the lifting component to drive the scraper 21 to rotate along the cavity wall of the molding cavity 12; a connecting frame 22 is fixedly connected to the scraper 21, and a cleaning component 23 is provided below the scraper 21, the cleaning component 23 being rotatably mounted on the connecting frame 22.

[0024] Specifically, the scraper 21 fits against the cavity wall of the forming cavity 12. The cleaning component 23 is preferably made of a flexible brush to avoid damaging the cavity wall, and the cleaning component 23 is kept in a state of compression with the cavity wall of the forming cavity 12.

[0025] During injection molding operations, the lifting assembly moves the closing assembly to its lowest position, preventing molten material from leaking from the molding cavity 12. When the molded part needs to be removed, the lifting assembly drives the closing assembly to move upward, causing the closing assembly to eject the molded part from the molding cavity 12. Simultaneously, the transmission mechanism drives the scraper 21 and the cleaning component 23 to rotate via the connecting frame 22. The scraper 21 revolves within the molding cavity 12 and adheres to the cavity wall, while the cleaning component 23 rotates on its own axis while revolving within the molding cavity 12.

[0026] The cleaning component 23 is preferably a brush that does not damage the cavity wall of the molding cavity 12 and is kept in a state of compression against the cavity wall of the molding cavity 12. The scraper 21 can scrape off the waste material tightly attached to the cavity wall of the molding cavity 12. The cleaning component 23 sweeps away the waste material on the cavity wall through its revolution motion, while its rotation motion prevents the waste material from accumulating on the brush. At this time, the waste material is discharged through the through groove 2, which can avoid raw material contamination caused by waste material accumulation and ensure the molding quality of the injection molded part; at the same time, it eliminates the hidden danger of the injection molded part sticking to the cavity wall caused by residual waste material, reduces the risk of demolding jamming, ensures a smooth rapid ejection and demolding process, shortens the operation interval, and improves production efficiency.

[0027] See Figures 2-5 As shown, the sealing assembly includes a sealing seat 24, a support rod 25, and a mounting groove 26; the sealing seat 24 is slidably disposed within the molding cavity 12; the upper end of the support rod 25 is fixedly connected to the sealing seat 24; the mounting groove 26 is opened on the side of the connecting frame 22 near the support rod 25, and one end of the support rod 25 passes through the mounting groove 26 and is fixedly connected to the support frame 28; the lifting assembly includes a first power member 27 and a support frame 28; the first power member 27 is fixedly installed on the rear mold 11, and the first power member 27 is used to provide power for the vertical movement of the connecting frame 22; the support frame 28 is fixedly connected to the output end of the first power member 27, and the connecting frame 22 is rotatably disposed within the support frame 28.

[0028] Specifically, the outer side of the sealing seat 24 is covered with a high-temperature resistant silicone sealing layer, and the flexible material of the sealing seat 24 is kept in a compressed and sealed state with the molding cavity 12. The first power component 27 is preferably a cylinder.

[0029] During injection molding, the first power component 27 is driven, and its output end drives the support frame 28 to move downwards. This, in turn, drives the sealing seat 24 to its lowest position via the support rod 25. At this time, molten material can be injected into the molding cavity 12. The outer side of the sealing seat 24 is connected to a flexible material that is unaffected by the molten material, and this flexible material maintains a compressed and sealed state with the molding cavity 12, preventing the molten material from leaking out of the molding cavity 12.

[0030] When it is necessary to remove the injection molded part, the output end of the first power component 27 drives the support frame 28 to move upward, and the support rod 25 simultaneously drives the sealing seat 24 to move upward, pushing the injection molded part out of the molding cavity 12 so that the staff can quickly remove the injection molded part from the mold.

[0031] See Figures 3-7As shown, the transmission mechanism includes a revolution component and a rotation component. The revolution component is disposed between the connecting frame 22 and the support frame 28, and is used to drive the scraper 21 and the cleaning component 23 to revolve along the cavity wall of the forming cavity 12. The rotation component is disposed between the cleaning component 23 and the support frame 28, and is used to drive the cleaning component 23 to rotate while revolving along the cavity wall of the forming cavity 12. The revolution component includes a second power component 29 and a synchronization component 210. The second power component 29 is fixedly mounted on the support frame 28, and is used to provide rotational power for the scraper 21 and the cleaning component 23. The synchronization component 210 is rotatably mounted on the support frame 28, and its working end is fixedly connected to the connecting frame 22. The synchronization component 210 is located away from the connecting frame 28. The working end of the frame 22 is fixedly connected to the output end of the second power component 29; the self-rotating assembly includes a gear disk 211 and a gear ring 212; the gear disk 211 is rotatably mounted on the connecting frame 22, and the gear disk 211 is fixedly connected to the cleaning component 23; the gear ring 212 is fixedly connected to the support frame 28, and the gear ring 212 meshes with the gear disk 211; the self-rotating assembly also includes an anti-interference component, which is used to prevent injection molding waste from affecting gear meshing. The anti-interference component includes a connecting cover 213 and a fixing cover 214; the connecting cover 213 is sleeved on the gear disk 211, and the connecting cover 213 is rotatably connected to the gear disk 211; the fixing cover 214 is sleeved on the gear ring 212, and the fixing cover 214 is fixedly connected to the support frame 28, and the fixing cover 214 is rotatably connected to the connecting cover 213.

[0032] Specifically, the second power component 29 is preferably a servo motor. The synchronization assembly 210 consists of a timing belt and a timing pulley that mesh with each other.

[0033] When the injection molded part needs to be removed, the first power unit 27 and the second power unit 29 are activated simultaneously. The output end of the second power unit 29 drives the working end of the synchronization assembly 210 to rotate. The synchronization assembly 210 consists of a meshing synchronous belt and a synchronous pulley. The second power unit 29 drives each connecting frame 22 to rotate through the synchronization assembly 210, causing the connecting frame 22 to rotate inside the support frame 28, thereby driving the scraper 21 and the cleaning part 23 to revolve within the molding cavity 12.

[0034] During its revolution, the cleaning component 23 drives the connecting cover 213 to rotate, and the connecting cover 213 synchronously drives the gear disk 211 to rotate along the gear ring 212. Since the gear disk 211 and the gear ring 212 are in a meshing state, the gear disk 211 can rotate along the gear ring 212 and drive the cleaning component 23 to rotate, thus realizing the rotation of the cleaning component 23. Thus, the cleaning component 23 completes a compound motion of revolution and rotation within the molding cavity 12: revolution allows the cleaning component 23 to cover the main area of ​​the molding cavity 12, ensuring that the waste material in each area of ​​the cavity wall is swept and treated, avoiding cleaning dead corners; rotation causes the contact angle between the cleaning component 23 and the cavity wall to continuously change, enhancing the peeling effect on tightly attached waste material, increasing the cleaning force, and preventing waste material from re-attaching to the cavity wall or accumulating.

[0035] Working principle: When the injection mold needs to remove the injection part, the first power component 27 and the second power component 29 are activated simultaneously. The output end of the first power component 27 drives the support frame 28 to move upward, and the support rod 25 drives the sealing seat 24 to move upward, pushing the injection part out of the molding cavity 12 so that the operator can quickly remove the injection part from the mold. The second power component 29 drives the scraper 21 and the cleaning component 23 to revolve within the molding cavity 12. At the same time, the cleaning component 23 rotates. The scraper 21 can scrape off the tightly attached waste material on the cavity wall of the molding cavity 12. The waste material is discharged through the through groove 2 to avoid raw material contamination caused by waste material accumulation and to ensure the molding quality of the injection part. The movement of the cleaning component 23 enhances the peeling effect of the tightly attached waste material, increases the cleaning force, and prevents the waste material from re-attaching to the cavity wall or accumulating.

[0036] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An injection mold with a quick demolding structure, comprising a front mold (1), a rear mold (11) disposed below the front mold (1), and the rear mold (11) having a molding cavity (12), characterized in that, A through groove (2) is provided on the side of the rear mold (11) near the molding cavity (12), and the through groove (2) penetrates the bottom of the rear mold (11); A scraper (21) is provided inside the molding cavity (12); A sealing component is provided inside the molding cavity (12) to prevent molten material from leaking from the through groove (2); The rear mold (11) is provided with a lifting component, which is used to drive the scraper (21) and the closing component to move vertically; A transmission mechanism is provided between the scraper (21) and the lifting assembly. The transmission mechanism is used to drive the scraper (21) to rotate along the cavity wall of the forming cavity (12). The scraper (21) is fixedly connected to the connecting frame (22), and a cleaning component (23) is provided below the scraper (21). The cleaning component (23) is rotatably mounted on the connecting frame (22). The lifting mechanism includes a first power component (27) and a support frame (28); the first power component (27) is fixedly installed on the rear mold (11), and the first power component (27) is used to provide power for the vertical movement of the connecting frame (22). The support frame (28) is fixedly connected to the output end of the first power component (27), and the connecting frame (22) is rotatably disposed in the support frame (28). The transmission mechanism includes a revolution component and a rotation component; the revolution component is located between the connecting frame (22) and the support frame (28), and is used to drive the scraper (21) and the cleaning component (23) to revolve along the cavity wall of the molding cavity (12); the rotation component is located between the cleaning component (23) and the support frame (28), and is used to drive the cleaning component (23) to revolve along the cavity wall of the molding cavity (12) while rotating.

2. The injection mold with a quick demolding structure according to claim 1, characterized in that, The sealing assembly includes a sealing seat (24), a support rod (25), and a mounting groove (26); The sealing seat (24) can be slidably disposed within the molding cavity (12); The upper end of the support rod (25) is fixedly connected to the sealing seat (24); The mounting slot (26) is located on the side of the connecting frame (22) near the support rod (25), and one end of the support rod (25) passes through the mounting slot (26) and is fixedly connected to the support frame (28).

3. The injection mold with a quick demolding structure according to claim 1, characterized in that, The orbital component includes a second power component (29) and a synchronization component (210); The second power component (29) is fixedly mounted on the support frame (28). The second power component (29) is used to provide the power for the rotational motion of the scraper (21) and the cleaning component (23). The synchronization component (210) is rotatably mounted on the support frame (28). The working end of the synchronization component (210) is fixedly connected to the connecting frame (22), and the working end of the synchronization component (210) away from the connecting frame (22) is fixedly connected to the output end of the second power component (29).

4. The injection mold with a quick demolding structure according to claim 1, characterized in that, The self-rotating assembly includes a toothed disc (211) and a toothed ring (212). The toothed disc (211) is rotatably mounted on the connecting frame (22), and the toothed disc (211) is fixedly connected to the cleaning component (23); The toothed ring (212) is fixedly connected to the support frame (28), and the toothed ring (212) meshes with the toothed disc (211).

5. An injection mold with a quick demolding structure according to claim 4, characterized in that, The self-rotating component also includes an anti-interference component, which is used to prevent injection molding waste from affecting gear meshing. The anti-interference component includes a connecting cover (213) and a fixing cover (214). The connecting cover (213) is sleeved on the gear disk (211), and the connecting cover (213) can be rotatably connected to the gear disk (211); The fixing cover (214) is sleeved on the toothed ring (212), and the fixing cover (214) is fixedly connected to the support frame (28). The fixing cover (214) can be rotatably connected to the connecting cover (213).

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