Injection mold with a gate switching mechanism

Abstract

The utility model discloses an injection mold with water gap switching mechanism belongs to injection mold technical field. This kind of injection mold with water gap switching mechanism, including fixed mould seat, movable mould seat and switching mechanism, the fixed mould seat includes bottom mould seat, and the upper end surface four corners of bottom mould seat are all seted up with the positioning slot, the movable mould seat includes upper mould seat, and the bottom end four corners of upper mould seat are all fixedly installed with the positioning rod, and the bottom end of positioning rod is inserted with the positioning slot, the switching mechanism includes movable sleeve, and movable sleeve is inserted in the bottom end center of upper mould seat, the inside rotation sleeve of movable sleeve is equipped with switching cylinder, the bottom end of switching cylinder is equipped with several water gap grooves, and several water gap grooves are distributed along the axis of switching cylinder periphery, and the inner diameter of several water gap grooves all sets up differently, and the inside bottom end center of switching cylinder is rotatably connected with the blanking cylinder, the utility model discloses can effectively improve the practicality of injection mold, has higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with a sprue switching mechanism. Background Technology

[0002] In the field of injection molding, the sprue is a key component of the mold gating system, and its switching efficiency and convenience directly affect production continuity and product quality.

[0003] Based on the above, the inventors have discovered the following problems: the sprue switching of existing injection molds relies on manual disassembly and replacement of physical components. The switching requires stopping the machine, removing the fixing bolts on the outer surface of the mold, taking out the old sprue assembly, installing the new assembly, and debugging. For multi-variety, small-batch production, the downtime for sprue switching accounts for a long period of the total production time, which greatly increases production costs and delivery cycle pressure.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an injection mold with a sprue switching mechanism in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this invention is to provide an injection mold with a sprue switching mechanism to solve the problem mentioned in the background art that the sprue switching of existing injection molds relies on manual disassembly and replacement of physical components, requires machine shutdown during switching, and the downtime for sprue switching accounts for a long period of the total production time, which greatly increases production costs and delivery cycle pressure.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] An injection mold with a sprue switching mechanism includes a fixed mold base, a movable mold base, and a switching mechanism. The fixed mold base includes a bottom mold base, and positioning grooves are formed at the four corners of the upper end face of the bottom mold base. The movable mold base includes an upper mold base, and positioning rods are fixedly installed at the four corners of the bottom end of the upper mold base. The bottom ends of the positioning rods are inserted into the positioning grooves. The switching mechanism includes a movable sleeve, which is inserted into the center of the bottom end of the upper mold base. A switching cylinder is rotatably fitted inside the movable sleeve. A plurality of sprue grooves are formed at the bottom end of the switching cylinder. The plurality of sprue grooves are circumferentially distributed along the axis of the switching cylinder, and the inner diameters of the plurality of sprue grooves are all set to be different. A feed cylinder is rotatably connected to the center of the bottom end of the switching cylinder.

[0008] Furthermore, a rubber sleeve is fitted at the bottom of the feeding cylinder, and the bottom of the rubber sleeve abuts against the inner bottom of the switching cylinder. Heating blocks are fixedly installed on both sides of the feeding cylinder.

[0009] The beneficial effects of adopting the above-mentioned further solutions are that the rubber sleeve enhances the sealing between the feed cylinder and the switching cylinder, preventing leakage of injection molding raw materials; the heating block heats the feed cylinder, preventing the raw materials from cooling and solidifying and blocking the channels, thus ensuring a smooth injection molding process.

[0010] Furthermore, an L-shaped connecting tube is inserted inside the feeding cylinder, and an injection molding tube is sleeved on the top end of the L-shaped connecting tube. The bottom end of the L-shaped connecting tube communicates with the inside of the feeding cylinder.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the L-shaped connecting pipe connects the injection tube and the discharge cylinder, providing a flow channel for the injection molding raw material, ensuring that the raw material smoothly enters the discharge cylinder from the injection tube, and adapting to the rotation switching action of the switching cylinder.

[0012] Furthermore, a power box is fixedly installed on the upper side of one side of the movable sleeve, and a protective cover is fixedly installed on the upper end of the power box. Gears are rotatably connected inside the protective cover.

[0013] The beneficial effects of adopting the above-mentioned further solutions are that the power box provides installation space for the drive components, the protective cover protects the meshing structure of the gears and the gear plate, reduces interference from dust and impurities, and extends the service life of the transmission components.

[0014] Furthermore, a geared disc is fitted onto the upper end of the switching cylinder, and the geared disc meshes with the gear.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the meshing of the gear and the gear plate can transmit the rotational power to the switching cylinder, realize the rotational switching of the sprue groove, ensure that sprues of different specifications are quickly aligned with the injection path, and improve the switching accuracy.

[0016] Furthermore, a drive motor is fixedly installed inside the power box, and the output end of the drive motor is connected to a gear for transmission.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the drive motor provides power to the gear, and the gear transmission drives the switching cylinder to rotate automatically, replacing manual switching and improving the efficiency and stability of the water inlet switching.

[0018] Furthermore, an injection port is embedded in the upper end of the upper mold base, and the top end of the injection tube is inserted into the bottom end of the injection port.

[0019] The beneficial effects of adopting the above-mentioned further solution are that the injection port provides an inlet for the injection of raw materials, and the connection with the injection tube ensures that the raw materials can smoothly enter the inside of the discharge barrel. By using the discharge barrel in conjunction with different sprue grooves, a stable supply of injection molding raw materials can be achieved, ensuring the continuous operation of the injection molding process.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: The injection mold with a sprue switching mechanism allows the fixed mold base and moving mold base to precisely close via positioning grooves and positioning rods. The switching cylinder of the switching mechanism is rotatable, enabling different inner diameter sprue grooves to correspond to the injection path, achieving rapid switching of sprue groove specifications, adapting to different injection needs, improving mold versatility and changeover efficiency. A rubber sleeve enhances the sealing between the feed tube and the switching cylinder, preventing leakage of injection molding materials. A heating block heats the feed tube, preventing material cooling and solidification from blocking the channel, ensuring smooth injection. An L-shaped connecting pipe connects the injection tube and the feed tube, providing a flow channel for injection molding materials, ensuring smooth entry of materials from the injection tube into the feed tube. It adapts to the rotational switching action of the switching cylinder. The injection port provides an inlet for material injection, connecting with the injection tube to ensure smooth entry of materials into the feed tube. By utilizing the feed tube in conjunction with different sprue grooves, a stable supply of injection molding materials is achieved, ensuring continuous injection. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an injection mold with a sprue switching mechanism disclosed in an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional structural diagram of an injection mold with a sprue switching mechanism disclosed in an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 This is a three-dimensional structural diagram of the switching mechanism of the injection mold with a sprue switching mechanism disclosed in an embodiment of the present invention. Figure 3 ;

[0024] Figure 4 This is a three-dimensional structural diagram of the movable sleeve and switching cylinder of the injection mold with a sprue switching mechanism disclosed in an embodiment of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the internal unfolded structure of the movable sleeve of the injection mold with a sprue switching mechanism disclosed in an embodiment of this utility model.

[0026] In the diagram: 1. Fixed mold base; 101. Bottom mold base; 102. Positioning groove; 2. Moving mold base; 201. Upper mold base; 202. Injection port; 203. Positioning rod; 3. Switching mechanism; 301. Movable sleeve; 302. Power box; 303. Protective cover; 304. Switching cylinder; 305. Material discharge cylinder; 306. Gear plate; 307. Sprue groove; 308. Gear; 309. Injection tube; 310. L-shaped connecting pipe; 311. Heating block; 312. Drive motor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 - Figure 5 This utility model provides a technical solution: an injection mold with a sprue switching mechanism, including a fixed mold base 1, a moving mold base 2, and a switching mechanism 3. The fixed mold base 1 includes a bottom mold base 101, with positioning grooves 102 formed at the four corners of the upper end face of the bottom mold base 101; the moving mold base 2 includes an upper mold base 201, with positioning rods 203 fixedly installed at the four corners of the bottom end of the upper mold base 201, and the bottom ends of the positioning rods 203 being inserted into the positioning grooves 102; the switching mechanism 3 includes a movable sleeve 301, which is inserted into the center of the bottom end of the upper mold base 201, and a switching mechanism is rotatably mounted inside the movable sleeve 301. The bottom end of the switching cylinder 304 is provided with several sprue grooves 307, which are distributed circumferentially along the axis of the switching cylinder 304. The inner diameter of each sprue groove 307 is different. The bottom center of the switching cylinder 304 is rotatably connected to the unloading cylinder 305. The fixed mold base 1 and the moving mold base 2 are precisely closed by the positioning groove 102 and the positioning rod 203. The switching cylinder 304 of the switching mechanism 3 can rotate, so that the sprue grooves 307 with different inner diameters correspond to the injection path, realizing the rapid switching of the sprue groove 307 specifications, adapting to different injection requirements, and improving the mold versatility and changeover efficiency.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1 - Figure 5A rubber sleeve is fitted at the bottom of the feeding cylinder 305, and the bottom end of the rubber sleeve abuts against the bottom end of the inner part of the switching cylinder 304. Heating blocks 311 are fixedly installed on both sides of the feeding cylinder 305. An L-shaped connecting pipe 310 is inserted into the inside of the feeding cylinder 305. An injection molding pipe 309 is fitted at the top end of the L-shaped connecting pipe 310. The bottom end of the L-shaped connecting pipe 310 communicates with the inside of the feeding cylinder 305. A power box 302 is fixedly installed on the upper end of one side of the movable sleeve 301. A protective cover 303 is fixedly installed on the upper end of the power box 302. A toothed rotatable connection is rotatably connected inside the protective cover 303. A gear 306 is fitted onto the upper end of the gear 308 and the switching cylinder 304. The gear 306 meshes with the gear 308. A drive motor 312 is fixedly installed inside the power box 302. The output end of the drive motor 312 is connected to the gear 308. An injection port 202 is embedded in the upper end of the upper mold base 201. The top end of the injection tube 309 is inserted into the bottom end of the injection port 202. A rubber sleeve enhances the sealing between the feed cylinder 305 and the switching cylinder 304 to prevent leakage of injection molding material. A heating block 311 heats the feed cylinder 305 to prevent the material from cooling. Solidification blocks the channel, ensuring smooth injection molding. The L-shaped connecting pipe 310 connects the injection tube 309 and the discharge cylinder 305, providing a flow channel for the injection material and ensuring its smooth entry from the injection tube 309 into the discharge cylinder 305. It adapts to the rotational switching action of the switching cylinder 304. The power box 302 provides installation space for the drive components. The protective cover 303 protects the meshing structure of the gear 308 and the gear disc 306, reducing dust and impurity interference and extending the service life of the transmission components. The gear 308 meshes with the gear disc 306, transmitting rotational power to the switching cylinder 304. The rotation and switching of the sprue groove 307 ensures that sprues of different specifications are quickly aligned with the injection path, improving switching accuracy. The drive motor 312 provides power to the gear 308, which drives the switching cylinder 304 to rotate automatically, replacing manual switching and improving the efficiency and stability of sprue switching. The injection port 202 provides an inlet for raw material injection and is inserted into the injection tube 309 to ensure that the raw material enters the material feed cylinder 305 smoothly. By using the material feed cylinder 305 in conjunction with different sprue grooves 307, a stable supply of injection molding raw materials is achieved, ensuring continuous injection process.

[0031] Specifically, the working principle of this injection mold with a sprue switching mechanism is as follows: During use, the fixed mold base 1 and the moving mold base 2 are precisely closed by inserting the positioning rod 203 into the positioning groove 102. The injection material enters the injection tube 309 through the injection port 202, and then flows into the discharge cylinder 305 through the L-shaped connecting pipe 310. The drive motor 312 drives the gear 308 to rotate, and through the gear plate 306, the switching cylinder 304 rotates in the movable sleeve 301, aligning the corresponding specification sprue groove 307 with the bottom of the discharge cylinder 305. The heating block 311 heats the discharge cylinder 305 to prevent the material from solidifying, and the rubber sleeve ensures the sealing. The material is injected into the mold cavity through the sprue groove 307, realizing automatic switching and stable injection of different specifications of sprues.

[0032] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. An injection mold with a sprue switching mechanism, characterized in that, The system includes a fixed mold base (1), a moving mold base (2), and a switching mechanism (3). The fixed mold base (1) includes a bottom mold base (101), and positioning grooves (102) are provided at the four corners of the upper end face of the bottom mold base (101). The moving mold base (2) includes an upper mold base (201), and positioning rods (203) are fixedly installed at the four corners of the bottom end of the upper mold base (201). The bottom ends of the positioning rods (203) are inserted into the positioning grooves (102). The switching mechanism (3) includes a movable sleeve (301). The movable sleeve (301) is inserted at the bottom center of the upper mold base (201). The movable sleeve (301) is rotatably fitted with a switching cylinder (304). The bottom end of the switching cylinder (304) is provided with a plurality of sprue grooves (307). The plurality of sprue grooves (307) are distributed circumferentially along the axis of the switching cylinder (304). The inner diameters of the plurality of sprue grooves (307) are all set differently. The bottom center of the switching cylinder (304) is rotatably connected to a feed cylinder (305).

2. The injection mold with a sprue switching mechanism according to claim 1, characterized in that, The bottom end of the feeding cylinder (305) is fitted with a rubber sleeve, the bottom end of which abuts against the inner bottom end of the switching cylinder (304), and heating blocks (311) are fixedly installed on both sides of the feeding cylinder (305).

3. The injection mold with a sprue switching mechanism according to claim 1, characterized in that, An L-shaped connecting pipe (310) is inserted inside the feed cylinder (305). An injection molding pipe (309) is sleeved on the top end of the L-shaped connecting pipe (310). The bottom end of the L-shaped connecting pipe (310) communicates with the inside of the feed cylinder (305).

4. The injection mold with a sprue switching mechanism according to claim 1, characterized in that, A power box (302) is fixedly installed on the upper side of one side of the movable sleeve (301), and a protective cover (303) is fixedly installed on the upper end of the power box (302). A gear (308) is rotatably connected inside the protective cover (303).

5. An injection mold with a sprue switching mechanism according to claim 4, characterized in that, The upper end of the switching cylinder (304) is fitted with a gear disc (306), and the gear disc (306) meshes with the gear (308).

6. An injection mold with a sprue switching mechanism according to claim 5, characterized in that, The power box (302) is fixedly installed with a drive motor (312), and the output end of the drive motor (312) is connected to the gear (308) for transmission.

7. An injection mold with a sprue switching mechanism according to claim 3, characterized in that, The upper mold base (201) is fitted with an injection port (202) at its upper end, and the top end of the injection tube (309) is inserted into the bottom end of the injection port (202).

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