Multi-product injection mold

Abstract

The invention discloses a multi-product injection mold, and belongs to the technical field of injection molding machining. The injection mold mainly comprises a base, a lower mold and an upper mold, the lower mold is matched with the upper mold, the upper end of the lower mold is provided with an injection molding cavity, a plurality of mold cavities and a plurality of runners, the multiple runners are arranged around the injection molding cavity, and the mold cavities are communicated with the injection molding cavity through the runners. According to the multi-product injection mold, in the scheme, the multiple mold cavities communicate with the injection molding cavity through the multiple flow channels correspondingly, the partition blocks and the limiting blocks form the fan-shaped areas in the injection molding cavity, melt flows into the corresponding flow channels through the fan-shaped areas, the area of the fan-shaped areas can be changed by rotating the limiting blocks, and therefore the melt can flow into the injection molding cavity through the flow channels; and the number of the mold cavities filled with the melt is accurately controlled, so that one or more pieces can be subjected to independent injection molding processing, the situation of excessive product manufacturing is prevented, the practicability is relatively high, and the requirement of high-efficiency injection molding work can be met.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding, and in particular to a multi-product injection mold. Background Art

[0002] Injection molding is a method for producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. When the existing multi-product processing injection mold is used, all the internal injection molded parts are processed at one time. It is impossible to perform separate injection molding on one or more of them during injection molding, which results in overproduction of some products when performing injection molding of products for different orders.

[0003] China Patent Authorization Announcement No.: CN218876120U provides a mold for multi-product processing. This solution drives the rack to rotate through the operation of the pneumatic cylinder on the mounting plate, meshing with the rotating gear for transmission, and then drives the reversing seat on the rotating shaft to rotate in the mounting groove, so that the right-angle flow channel on the mounting groove rotates to the two ends respectively connected with the feed flow channel and one of the branch flow channels, thereby completing the processing of injection molded parts of different shapes and different quantities in the mold to meet the different quantity order requirements of different products.

[0004] However, this solution can only select at most two or at least one injection molding slot for injection molding by rotating the reversing seat. It is not applicable when there are many cavities on a mold. It has great limitations and cannot meet the requirements of high-efficiency injection molding work.

[0005] Therefore, it is necessary to provide a multi-product injection mold to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0007] Based on the above-mentioned problems existing in the prior art, the problem to be solved by the present application is: to provide a multi-product injection mold, in which multiple mold cavities are connected with the injection cavity through multiple runners respectively, and the partition block and the limit block form a fan-shaped area in the injection cavity, and the molten material flows into the corresponding runner through the fan-shaped area. The area of ​​the fan-shaped area can be changed by rotating the limit block, so that the fan-shaped area is connected with more or less runners, and the number of mold cavities filled with molten material is accurately controlled, thereby realizing separate injection molding of one or more pieces to prevent the occurrence of overproduction of products. It is highly practical and can meet the needs of high-efficiency injection molding work.

[0008] The technical solution adopted by the present application to solve its technical problems is: a multi-product injection mold, comprising a base, a lower mold and an upper mold, the lower mold and the upper mold match each other, and the upper end of the lower mold is respectively provided with an injection cavity, a plurality of mold cavities and a plurality of flow channels, the plurality of flow channels are arranged around the injection cavity, the mold cavity is connected with the injection cavity through the flow channel, the inner wall of the injection cavity is integrally formed with a partition block, a servo motor is installed at the bottom end of the lower mold, the output end of the servo motor is fixedly connected with a rotating rod, the rotating rod passes through the lower mold and extends to the inner cavity of the injection cavity, and the rotating rod is located at the center position of the inner cavity of the injection cavity, the top end of the rotating rod is fixedly connected with a limiting block, one end of the limiting block abuts against the partition block, and the other end of the limiting block abuts against the inner wall of the injection cavity, an injection channel is provided on the upper mold, and the injection channel is located above the fan-shaped area formed by the partition block and the limiting block.

[0009] Furthermore, the shape of one end of the partition block close to the limiting block is set to be a curved surface matching the limiting block.

[0010] Furthermore, the shape of one end of the limiting block abutting against the inner wall of the injection cavity is set to be a curved surface matching the inner wall of the injection cavity.

[0011] Furthermore, the heights of the partition block and the limit block are consistent with the height of the inner cavity of the injection cavity.

[0012] Furthermore, a plurality of positioning posts are fixedly connected to the bottom end of the upper mold, and a plurality of positioning grooves matching the positioning posts are formed at the top end of the lower mold.

[0013] Furthermore, a hydraulic rod is installed on the base, the output end of the hydraulic rod is fixedly connected to the lower mold, and a plurality of limit rods are fixedly connected to the bottom end of the lower mold, and the plurality of limit rods all penetrate the base.

[0014] Furthermore, the bottom end of the lower mold is slidably connected to a plurality of ejector rods, the ejector rods extend to the inner cavity of the mold cavity, and the upper surface of the ejector rods and the bottom end of the inner wall of the mold cavity form a complete plane, and a spring is sleeved on the outer side of the ejector rod, and the two ends of the spring are respectively fixedly connected to the lower mold and the ejector rod.

[0015] The beneficial effect of the present application is: a multi-product injection mold provided by the present application, in which multiple mold cavities are connected with the injection cavity through multiple runners respectively, and the partition block and the limit block form a fan-shaped area in the injection cavity, and the molten material flows into the corresponding runner through the fan-shaped area. The area of ​​the fan-shaped area can be changed by rotating the limit block, so that the fan-shaped area is connected with more or fewer runners, and the number of mold cavities filled with molten material is accurately controlled, thereby realizing separate injection molding of one or more pieces to prevent the occurrence of overproduction of products. It is highly practical and can meet the needs of high-efficiency injection molding work.

[0016] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0018] In the attached picture:

[0019] Figure 1 It is a schematic diagram of the overall structure;

[0020] Figure 2 It is a schematic diagram of the explosion structure;

[0021] Figure 3 It is a schematic diagram of the upper structure of the lower mold;

[0022] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the lower mold;

[0023] Figure 5 It is a schematic diagram of the limit block structure;

[0024] Figure 6 Schematic diagram of the internal structure of the mold cavity.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Base; 2. Lower mold; 3. Upper mold; 4. Injection channel; 5. Positioning column; 6. Positioning groove; 7. Limit rod; 8. Hydraulic rod; 9. Mold cavity; 10. Injection cavity; 11. Runner; 12. Partition block; 13. Limit block; 14. Rotating rod; 15. Servo motor; 16. Ejector rod; 17. Spring. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] like Figure 1-5 As shown, the present application provides a multi-product injection mold, including a base 1, a lower mold 2 and an upper mold 3, the lower mold 2 and the upper mold 3 match, and the upper end of the lower mold 2 is respectively provided with an injection cavity 10, a plurality of mold cavities 9 and a plurality of flow channels 11, the plurality of flow channels 11 are arranged around the injection cavity 10, the mold cavity 9 is connected with the injection cavity 10 through the flow channel 11, the inner wall of the injection cavity 10 is integrally formed with a partition block 12, and a servo motor 15 is installed at the bottom end of the lower mold 2, and the output of the servo motor 15 The end is fixedly connected with a rotating rod 14, which passes through the lower mold 2 and extends to the inner cavity of the injection cavity 10, and the rotating rod 14 is located at the center of the inner cavity of the injection cavity 10, and the top of the rotating rod 14 is fixedly connected with a limiting block 13, one end of the limiting block 13 abuts against the partition block 12, and the other end of the limiting block 13 abuts against the inner wall of the injection cavity 10, and an injection channel 4 is opened on the upper mold 3, and the injection channel 4 is located above the fan-shaped area formed by the partition block 12 and the limiting block 13.

[0030] Injection molding is a method for producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. When the existing multi-product processing injection mold is used, all the internal injection molded parts are processed at one time. It is impossible to perform separate injection molding on one or more of them during injection molding, which results in overproduction of some products when performing injection molding of products for different orders.

[0031] In this solution, a lifting mechanism should be provided on the upper side of the upper mold 3, which can be a hydraulic rod. The lifting mechanism can drive the upper mold 3 to move up and down, and the upper mold 3 moves downward to close the mold with the lower mold 2. At this time, the user can inject the molten material through the injection channel 4. The molten material is injected into the injection cavity 10 through the injection channel 4 and comes into the fan-shaped area formed between the partition block 12 and the limit block 13. After the lower mold 2 and the upper mold 3 are closed, the fan-shaped area will form a closed space. The molten material can flow into the runner 11 through the fan-shaped area, and then flow into the corresponding mold cavity 9 through the runner 11. The user starts the servo The motor 15 can drive the rotating rod 14 to rotate, and then drive the limit block 13 to rotate. The area of ​​the fan-shaped area can be changed by rotating the limit block 13, so that the fan-shaped area is connected with more or fewer flow channels 11, and the molten material in the fan-shaped area cannot flow to places outside the fan-shaped area in the injection cavity 10, but can only flow to the corresponding mold cavity 9 through the flow channel 11 connected to the fan-shaped area. Therefore, the number of mold cavities 9 filled with molten material can be accurately controlled by rotating the limit block 13, thereby realizing separate injection molding of one or more pieces to prevent the occurrence of overproduction of products.

[0032] The shape of one end of the partition block 12 close to the limiting block 13 is set to be an arc surface matching the limiting block 13 .

[0033] In this solution, the shape of one end of the partition block 12 close to the limit block 13 is set to a curved surface that matches the limit block 13, ensuring that during the rotation of the limit block 13, the partition block 12 is always tightly abutted against the rotating end of the limit block 13, thereby ensuring the airtightness of the fan-shaped area.

[0034] The shape of one end of the limiting block 13 abutting against the inner wall of the injection cavity 10 is set to be an arc surface matching the inner wall of the injection cavity 10 .

[0035] In this solution, the shape of one end of the limit block 13 that abuts against the inner wall of the injection cavity 10 is set to an arc surface that matches the inner wall of the injection cavity 10, ensuring that during the rotation of the limit block 13, one end of the limit block 13 is always in close contact with the inner wall of the injection cavity 10, thereby ensuring the airtightness of the fan-shaped area.

[0036] The heights of the partition block 12 and the limit block 13 are consistent with the height of the inner cavity of the injection cavity 10 .

[0037] In this solution, the height of the partition block 12 and the limit block 13 are consistent with the height of the inner cavity of the injection cavity 10, ensuring that after the lower mold 2 and the upper mold 3 are closed, the bottom end of the upper mold 3 is tightly abutted against the top end of the partition block 12 and the limit block 13, ensuring the airtightness of the fan-shaped area.

[0038] A plurality of positioning posts 5 are fixedly connected to the bottom end of the upper mold 3 , and a plurality of positioning grooves 6 matching the positioning posts 5 are formed on the top end of the lower mold 2 .

[0039] When the lower mold 2 and the upper mold 3 are closed, a plurality of positioning posts 5 are inserted into the positioning grooves 6. The clamping connection between the positioning posts 5 and the positioning grooves 6 can play a limiting role, thereby ensuring the stability of the lower mold 2 and the upper mold 3 after closing.

[0040] like Figure 2 and 6 As shown, a hydraulic rod 8 is installed on the base 1, and the output end of the hydraulic rod 8 is fixedly connected to the lower mold 2. A plurality of limit rods 7 are fixedly connected to the bottom end of the lower mold 2, and the plurality of limit rods 7 all penetrate the base 1. A plurality of ejector rods 16 are slidably connected to the bottom end of the lower mold 2. The ejector rods 16 extend to the inner cavity of the mold cavity 9, and the upper surface of the ejector rods 16 and the bottom end of the inner wall of the mold cavity 9 form a complete plane. A spring 17 is sleeved on the outer side of the ejector rod 16, and the two ends of the spring 17 are fixedly connected to the lower mold 2 and the ejector rod 16 respectively.

[0041] When the product is injection molded in the mold cavity 9, the user starts the lifting mechanism on the upper mold 3 to drive the upper mold 3 to move upward, so that the lower mold 2 and the upper mold 3 are opened, and then the hydraulic rod 8 is started to drive the lower mold 2 to move downward. During the downward movement of the lower mold 2, the bottom ends of multiple limit rods 7 abut against the top of the base 1. As the lower mold 2 continues to move downward, multiple ejector rods 16 will eject all the products in the mold cavity 9, thereby facilitating the user to take out the product. During the process of ejecting the product by the ejector rod 16, the spring 17 will be squeezed. Therefore, when the lower mold 2 is reset upward, the ejector rod 16 will also be reset under the elastic force of the spring 17, and the top of the ejector rod 16 will fit with the bottom end of the inner wall of the mold cavity 9 again.

[0042] Working principle:

[0043] During use, the user drives the upper mold 3 downward through the lifting mechanism so that the upper mold 3 and the lower mold 2 are molded together, and then the user injects the molten material through the injection channel 4. The molten material is injected into the interior of the injection cavity 10 through the injection channel 4 and comes to the fan-shaped area formed between the partition block 12 and the limit block 13. The molten material flows into the runner 11 through the fan-shaped area, and then flows into the corresponding mold cavity 9 through the runner 11. The user starts the servo motor 15 to drive the rotating rod 14 to rotate, and then drives the limit block 13 to rotate. The area of ​​the fan-shaped area can be changed by rotating the limit block 13, so that the fan-shaped area is connected with more or less runners 11, so that the number of mold cavities 9 filled with the molten material can be accurately controlled by rotating the limit block 13, thereby achieving a The user can perform separate injection molding of one or more pieces. When the product is injection molded in the mold cavity 9, the user starts the lifting mechanism on the upper mold 3 to drive the upper mold 3 to move upward, so that the lower mold 2 and the upper mold 3 are opened, and then the hydraulic rod 8 is started to drive the lower mold 2 to move downward. During the downward movement of the lower mold 2, the bottom ends of multiple limit rods 7 abut against the top of the base 1. As the lower mold 2 continues to move downward, multiple ejector rods 16 will eject all the products in the mold cavity 9, thereby facilitating the user to take out the product. During the process of ejecting the product by the ejector rod 16, the spring 17 will be squeezed. Therefore, when the lower mold 2 is reset upward, the ejector rod 16 will also be reset under the elastic force of the spring 17, and the top of the ejector rod 16 will fit with the bottom end of the inner wall of the mold cavity 9 again.

[0044] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-product injection mold, comprising a base (1), a lower mold (2) and an upper mold (3), characterized in that: The lower mold (2) and the upper mold (3) match each other, and the upper end of the lower mold (2) is respectively provided with an injection cavity (10), a plurality of mold cavities (9) and a plurality of flow channels (11), the plurality of flow channels (11) are arranged around the injection cavity (10), the mold cavity (9) is connected with the injection cavity (10) through the flow channels (11), the inner wall of the injection cavity (10) is integrally formed with a partition block (12), the bottom end of the lower mold (2) is installed with a servo motor (15), the output end of the servo motor (15) is fixedly connected with a rotating rod (14), the rotating The rod (14) passes through the lower mold (2) and extends to the inner cavity of the injection cavity (10), and the rotating rod (14) is located at the center of the inner cavity of the injection cavity (10). The top end of the rotating rod (14) is fixedly connected to the limit block (13), one end of the limit block (13) is in contact with the partition block (12), and the other end of the limit block (13) is in contact with the inner wall of the injection cavity (10). The upper mold (3) is provided with an injection channel (4), and the injection channel (4) is located above the fan-shaped area formed by the partition block (12) and the limit block (13).

2. A multi-product injection mold according to claim 1, characterized in that: The shape of one end of the partition block (12) close to the limit block (13) is set to be a curved surface matching the limit block (13).

3. A multi-product injection mold according to claim 1, characterized in that: The shape of one end of the limiting block (13) abutting against the inner wall of the injection cavity (10) is set to be a curved surface matching the inner wall of the injection cavity (10).

4. A multi-product injection mold according to claim 1, characterized in that: The heights of the partition block (12) and the limit block (13) are both consistent with the height of the inner cavity of the injection cavity (10).

5. The multi-product injection mold according to claim 1, characterized in that: The bottom end of the upper mold (3) is fixedly connected with a plurality of positioning columns (5), and the top end of the lower mold (2) is provided with a plurality of positioning grooves (6) matching the positioning columns (5).

6. The multi-product injection mold according to claim 1, characterized in that: A hydraulic rod (8) is installed on the base (1), the output end of the hydraulic rod (8) is fixedly connected to the lower mold (2), and the bottom end of the lower mold (2) is fixedly connected to a plurality of limit rods (7), and the plurality of limit rods (7) all penetrate the base (1).

7. A multi-product injection mold according to claim 2, characterized in that: The bottom end of the lower mold (2) is slidably connected to a plurality of ejector rods (16), the ejector rods (16) extending into the inner cavity of the mold cavity (9), and the upper surfaces of the ejector rods (16) and the bottom end of the inner wall of the mold cavity (9) form a complete plane, and a spring (17) is sleeved on the outer side of the ejector rods (16), and the two ends of the spring (17) are respectively fixedly connected to the lower mold (2) and the ejector rods (16).

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