Injection mold

Abstract

The utility model provides an injection mold which is used for forming a product and a connecting material with a first stub bar and a second stub bar in an injection molding mode so as to improve the product quality. The lower die assembly is matched with the upper die assembly in an open-close mode; the cutter assembly comprises a movable part movably arranged on the side, away from the upper die assembly, of the lower die assembly, a first cutter part movably arranged on the lower die assembly in a penetrating mode and fixedly connected with the movable part, a second cutter part movably arranged on the lower die assembly in a penetrating mode and arranged on the movable part in a floating mode, and a driving part connected with the movable part. At the initial position, the second cutter part is far away from the upper die assembly relative to the first cutter part, the driving part drives the movable part to move by a first preset distance close to the upper die assembly, so that the first cutter part is inserted into the first material head, the second cutter part abuts against the movable part, and the driving part drives the movable part to move by a second preset distance close to the upper die assembly; and the first cutter part and the second cutter part respectively cut off the first material head and the second material head.

Description

Technical Field

[0001] This utility model relates to the field of product injection molding technology, and in particular to an injection mold. Background Technology

[0002] Currently, after product molding is completed by injection mold, two methods are typically chosen for product cutting: one is to cut the product directly inside the injection mold; the other is to remove the product and then cut it. When using the first method, cutting the product directly inside the injection mold, multiple connecting parts with varying thicknesses between the connecting material and the product require multiple sets of cutting components within the injection mold to cut these connecting parts at different locations. However, the limited internal space of the injection mold makes it difficult to rationally arrange these multiple cutting components, increasing the design and manufacturing difficulty of the injection mold and limiting its application in the production of complex products. When using the second method, cutting the product after removal, the product and connecting material need to be transferred together to the cutting equipment. During this process, the product and connecting material are difficult to position accurately within the cutting equipment and are easily damaged during transfer, leading to offsets in the cutting position. These problems can cause dimensional deviations and appearance defects in the product during the cutting process, seriously affecting product quality and performance. Utility Model Content

[0003] In view of the above situation, it is necessary to provide an injection mold to improve product quality.

[0004] This application provides an injection mold for injection molding a product and a continuous material, wherein the continuous material has a first sprue and a second sprue respectively connected to the product, and the injection mold includes:

[0005] Upper mold component;

[0006] The lower mold assembly is fitted with the upper mold assembly, and the lower mold assembly and the upper mold assembly are injection molded to form the product when the mold is closed; and

[0007] A cutting assembly includes a movable component, a first cutting component, a second cutting component, and a driving component. The movable component is movably disposed on the side of the lower mold assembly opposite to the upper mold assembly. The first cutting component is movably disposed through the lower mold assembly along the mold opening direction and is fixedly connected to the movable component. The second cutting component is movably disposed through the lower mold assembly along the mold opening direction and is buoyantly disposed on the movable component. The driving component is connected to the movable component.

[0008] In the initial position, the second cutter is away from the upper mold assembly relative to the first cutter. The driving member is used to drive the movable member to move toward the upper mold assembly a first preset distance, so that the first cutter is inserted into the first material head and the second cutter abuts against the movable member. The driving member is also used to drive the movable member to move toward the upper mold assembly a second preset distance, so that the first cutter and the second cutter cut off the first material head and the second material head respectively.

[0009] In actual use, the above-described injection mold first closes the upper and lower mold components, and injection molding forms the product and a connecting material with a first and second sprue. Then, the driving component drives the movable component to move a first preset distance to the upper mold assembly, causing the first cutter to insert into the first sprue, and the second cutter to abut against the movable component. Next, the driving component drives the movable component to continue moving a second preset distance to the upper mold assembly, so that the first and second cutters simultaneously cut off the first and second sprues. Finally, the upper and lower mold components open, and the injection-molded and cut product is removed. Through these steps, the injection mold achieves efficient and precise cutting of sprues of different thicknesses within the mold, effectively preventing damage to the product during injection molding and cutting, and improving product quality and production efficiency.

[0010] In some embodiments, the movable member is provided with a retaining groove, and the second cutter member includes a cutter body and a protrusion. The cutter body is movably disposed through the lower mold assembly and the movable member. The protrusion protrudes from the side wall of the cutter body and is located in the retaining groove. The retaining groove is clearance-fitted with the protrusion. The groove wall of the retaining groove adjacent to the upper mold assembly is used to abut against the protrusion to limit the cutter body to the initial position. The groove wall of the retaining groove away from the upper mold assembly is used to abut against the protrusion so that the movable member drives the cutter body to move synchronously.

[0011] In some embodiments, in the initial position, the distance between the support groove away from the groove wall of the upper mold assembly and the protrusion is equal to the first preset distance.

[0012] In some embodiments, the cutter assembly further includes:

[0013] A fixing member is provided on the side of the lower mold assembly opposite to the upper mold assembly and connected to the lower mold assembly. The fixing member is used to abut against the cutter body and the movable member in the initial position.

[0014] In some embodiments, the active component includes:

[0015] A movable body is disposed between the fixed member and the lower mold assembly. The movable body has a positioning groove and a receiving groove. The positioning groove extends through the movable body, and the receiving groove is located on the side of the movable body opposite to the upper mold assembly.

[0016] A connecting body is disposed on the side of the movable body opposite to the upper mold assembly and is detachably connected to the movable body. The side of the connecting body opposite to the upper mold assembly abuts against the driving member. The side of the connecting body facing the movable body is provided with a storage groove and a positioning part at intervals. The storage groove is connected to the receiving groove to form the abutment groove. The positioning part is used to be inserted into the positioning groove to position the movable body. The driving member is movably inserted through the fixing member and abuts against the connecting body.

[0017] In some embodiments, the movable member has a mounting groove on the side facing the upper mold assembly, and the cutter assembly further includes an elastic member housed in the mounting groove. The two ends of the elastic member elastically abut against the bottom of the mounting groove and the lower mold assembly, respectively, and the elastic member is used to drive the movable member to reset.

[0018] In some embodiments, the lower mold assembly includes:

[0019] The lower template is disposed opposite to the upper template assembly and abuts against the elastic member; the lower template is connected to the fixing member.

[0020] The lower mold core is embedded in the lower mold plate on the side facing the upper mold assembly and is injection molded with the upper mold assembly to form the product when the mold is closed;

[0021] A connector is provided on the side of the lower mold plate opposite to the upper mold assembly and is connected to the lower mold plate; and

[0022] A fixing plate is spaced apart from the lower template and is connected to the connector and the fixing member respectively. A storage space is formed between the fixing plate, the connector and the lower template, and the storage space is used to store the driving member.

[0023] In some embodiments, the fastener includes:

[0024] The fixing part is connected to the lower template;

[0025] A supporting portion protrudes from the side wall of the fixing portion and surrounds the fixing portion to form a supporting space, the supporting space being used to accommodate the movable component; and

[0026] The support portion has two ends connected to the fixing plate and the fixing portion, respectively, and the support portion is used to support the fixing portion.

[0027] In some embodiments, the lower template has a limiting groove on the side facing the connector. The limiting groove accommodates the movable part. The bottom of the limiting groove opposite to the upper mold assembly is used to abut against the movable part to limit the movement distance of the movable part.

[0028] In some embodiments, the drive includes:

[0029] The pushing body is movably inserted through the fixed member and abuts against the movable member;

[0030] An elastic body, sleeved on the pushing body, wherein both ends of the elastic body elastically abut against the fixing member and the end of the pushing body away from the upper mold assembly, respectively; and

[0031] A driving body, connected to the pushing body, is used to drive the pushing body to move the movable part closer to the upper mold assembly, so as to compress the elastic body to the fixed part. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the injection mold provided in the embodiments of this application.

[0033] Figure 2 for Figure 1 The diagram shows a partial cross-sectional view of the injection mold along the II-II direction.

[0034] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the injection mold along the III-III direction.

[0035] Figure 4 for Figure 2 The diagram shows an enlarged view of the injection mold at position IV.

[0036] Figure 5 for Figure 2 The diagram shows the exploded structure of the moving and fixed parts.

[0037] Figure 6 for Figure 2 The diagram shows a three-dimensional structure of the cutter assembly and the ejector assembly.

[0038] Key component symbols: Injection mold 100, upper mold assembly 10, lower mold assembly 20, lower template 21, limiting groove 211, lower mold core 22, connecting part 23, fixing plate 24, storage space 241, cutting blade assembly 30, movable part 31, supporting groove 311, movable body 312, positioning groove 3121, receiving groove 3122, connecting body 313, storage groove 3131, positioning part 3132, placement groove 314, first cutting blade part 32, second cutting blade part 33, cutting blade body 331, protrusion 332, driving part 34, pushing body 341, elastic body 342, driving body 343, fixing part 35, fixing part 351, supporting part 352, supporting space 3521, bearing part 353, elastic part 36, ejector assembly 40, first ejector pin part 41, second ejector pin part 42, ejector plate 43, limiting part 44. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0040] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0043] Please see Figure 1 and Figure 2 This application provides an injection mold 100, which includes an upper mold assembly 10, a lower mold assembly 20, and a cutter assembly 30. The injection mold 100 is used for injection molding to form a product and a connecting material. The connecting material has a first sprue and a second sprue, which are respectively connected to different positions on the product. The first sprue and the second sprue are plastic bodies solidified within the injection runner. The thickness of the connection between the product and the first sprue and the second sprue differs along the mold opening direction. In this embodiment, the thickness of the first sprue is greater than the thickness of the second sprue.

[0044] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The upper mold assembly 10 and the lower mold assembly 20 are positioned opposite each other and fit together. The lower mold assembly 20 and the upper mold assembly 10 are injection molded to form a product when the mold is closed. The cutter assembly 30 includes a movable part 31, a first cutter part 32, a second cutter part 33, and a drive part 34. The movable component 31 is movably disposed on the side of the lower mold assembly 20 away from the upper mold assembly 10. The first cutter 32 is movably disposed through the lower mold assembly 20 along the mold opening direction and is fixedly connected to the movable component 31. The second cutter 33 is movably disposed through the lower mold assembly 20 along the mold opening direction and is floatingly disposed on the movable component 31. The driving component 34 is connected to the movable component 31. In the initial position, the second cutter 33 is away from the upper mold assembly 10 relative to the first cutter 32. The driving component 34 is used to drive the movable component 31 to move towards the upper mold assembly 10 by a first preset distance L, so that the first cutter 32 is inserted into the first material head and the second cutter 33 abuts against the movable component 31. The driving component 34 is also used to drive the movable component 31 to move towards the upper mold assembly 10 by a second preset distance, so that the first cutter 32 and the second cutter 33 cut off the first material head and the second material head, respectively.

[0045] When the aforementioned injection mold 100 is used, firstly, the upper mold assembly 10 and the lower mold assembly 20 close, and injection molding forms the product and the connecting material having a first sprue and a second sprue; then, the driving member 34 drives the movable member 31 to move towards the upper mold assembly 10 a first preset distance L, the first cutter 32 is inserted into the first sprue, and the second cutter 33 abuts against the movable member 31; next, the driving member 34 drives the movable member 31 to continue moving towards the upper mold assembly 10 a second preset distance, so that the first cutter 32 and the second cutter 33 respectively cut... First and second sprues; finally, the upper mold assembly 10 and the lower mold assembly 20 open the mold to remove the injection-molded and cut product. This achieves efficient and precise cutting of the first and second sprues of different thicknesses inside the injection mold 100 by a set of cutting blade 30, avoiding damage to the product during injection and cutting, thereby optimizing the layout and improving product quality and production efficiency. It also enables the cutting of multiple sprues of different thicknesses, such as cutting sprues with inconsistent thicknesses at multiple gates, and achieving a solution for separating the product from the gate / runner.

[0046] Please see Figure 2 In some embodiments, the movable member 31 is provided with a retaining groove 311, and the second cutter member 33 includes a cutter body 331 and a protrusion 332. The cutter body 331 is movably disposed in the lower mold assembly 20 and the movable member 31. The protrusion 332 protrudes from the side wall of the cutter body 331 and is located in the retaining groove 311. The retaining groove 311 and the protrusion 332 are in clearance fit. The groove wall of the retaining groove 311 adjacent to the upper mold assembly 10 is used to abut against the protrusion 332 to limit the cutter body 331 to the initial position. The groove wall of the retaining groove 311 away from the upper mold assembly 10 is used to abut against the protrusion 332 so that the movable member 31 drives the cutter body 331 to move synchronously.

[0047] Thus, by setting the specific structure of the aforementioned abutment groove 311 and the second cutter 33, the groove wall of the abutment groove 311 adjacent to the upper mold assembly 10 abuts against the protrusion 332, thereby limiting the cutter 331 to its initial position and preventing the cutter 331 from interfering with the injection molding product of the injection mold 100; when the movable part 31 moves a first preset distance L close to the upper mold assembly 10, the groove wall of the abutment groove 311 away from the upper mold assembly 10 abuts against the protrusion 332, so that the movable part 31 drives the cutter 331 to move synchronously, ensuring that the movable part 31 synchronously drives the first cutter 32 and the second cutter 33 to cut off the first material head and the second material head respectively, preventing the product from being damaged during the cutting process and improving product quality.

[0048] In this embodiment, the cutter body 331 and the protrusion 332 are composed of two separate structures, each of which is approximately "L" shaped, so as to facilitate the assembly of the second cutter 33 to the movable part 31, and at the same time, to facilitate the adjustment of the distance between the protrusion 332 and the groove wall of the support groove 311 according to the usage requirements.

[0049] Please see Figure 4 In some embodiments, in the initial position, the distance between the groove wall of the abutment groove 311 away from the upper mold assembly 10 and the protrusion 332 is approximately equal to a first preset distance L.

[0050] Thus, by setting the distance between the groove wall of the abutment groove 311 away from the upper mold assembly 10 and the protrusion 332 to be equal to the preset abutment distance, it is ensured that the groove wall of the abutment groove 311 away from the upper mold assembly 10 accurately abuts against the protrusion 332 when the movable part 31 moves a first preset distance L. This ensures that the movable part 31 can basically drive the first cutter 32 and the second cutter 33 to cut the first material head and the second material head respectively, thereby improving the cutting accuracy of the cutter assembly 30.

[0051] Please see Figure 2 In some embodiments, the cutter assembly 30 further includes a fixing member 35, which is located on the side of the lower mold assembly 20 away from the upper mold assembly 10. The fixing member 35 is connected to the lower mold assembly 20 and is used to abut against the cutter body 331 and the movable member 31 in the initial position.

[0052] Thus, by setting the aforementioned fixing member 35, the fixing member 35 abuts against the cutter body 331 and the movable member 31 in the initial position, preventing the cutter body 331 from continuously moving away from the upper mold assembly 10 under its own gravity, so that the cutter body 331 is kept in the preset position and preset height, while preventing the movable member 31 from shaking or shifting in the initial position and causing the position of the first cutter 32 to be misaligned, thereby ensuring that the injection mold 100 can stably injection mold the product and improve the injection molding quality.

[0053] Please see Figure 2 and Figure 5 In some embodiments, the movable component 31 includes a movable body 312 and a connecting body 313. The movable body 312 is disposed between the fixed component 35 and the lower mold assembly 20. The movable body 312 is provided with a positioning groove 3121 and a receiving groove 3122. The positioning groove 3121 passes through the movable body 312, and the receiving groove 3122 is disposed on the side of the movable body 312 opposite to the upper mold assembly 10. The connecting body 313 is located on the side of the movable body 312 away from the upper mold assembly 10 and is detachably connected to the movable body 312. The side of the connecting body 313 away from the upper mold assembly 10 abuts against the driving member 34. The side of the connecting body 313 facing the movable body 312 is provided with a storage groove 3131 and a positioning part 3132 at intervals. The storage groove 3131 is connected to the receiving groove 3122 to form a supporting groove 311. The positioning part 3132 is used to be inserted into the positioning groove 3121 to position the movable body 312. The driving member 34 is movably inserted through the fixing member 35 and abuts against the connecting body 313.

[0054] Thus, by detachably connecting the movable body 312 and the connecting body 313, it facilitates the rapid assembly of the movable part 31 with the first cutting blade 32 and the second cutting blade 33, and makes maintenance and replacement of the cutting blade assembly 30 easier. Furthermore, by connecting the storage groove 3131 and the receiving groove 3122 to form the abutment groove 311, the structure of the movable body 312 and the connecting body 313 becomes more compact, optimizing the layout of the movable components. In addition, by providing a positioning part 3132 inserted into the positioning groove 3121, the positioning groove 3121 and the positioning part 3132 cooperate to position the movable body 312, preventing misalignment between the movable body 312 and the connecting body 313, which is beneficial for the precise assembly of the cutting blade assembly 30.

[0055] Please see Figure 2 and Figure 5 In some embodiments, the movable member 31 has a mounting groove 314 on the side facing the upper mold assembly 10. The cutter assembly 30 also includes an elastic member 36, which is housed in the mounting groove 314. The two ends of the elastic member 36 elastically abut against the bottom of the mounting groove 314 and the lower mold assembly 20, respectively. The elastic member 36 is used to provide elastic force and drive the movable member 31 to reset. Exemplarily, the elastic member 36 can be a spring.

[0056] Thus, by setting the aforementioned mounting groove 314 and elastic element 36, the movable element 31 compresses the elastic element 36 to the lower mold assembly 20 when cutting the product. This allows the compressed elastic element 36 to provide elastic force to the movable element 31 after the cutting operation is completed, thereby driving the movable element 31 to move the first cutter 32 and the second cutter 33 back to their initial positions, making it easier for the injection mold 100 to repeat the cutting operation.

[0057] In some embodiments, the lower mold assembly 20 includes a lower template 21, a lower mold core 22, a connector 23, and a fixing plate 24. The lower template 21 is disposed opposite to the upper mold assembly 10 and abuts against the elastic member 36. The lower template 21 is connected to the fixing member 35. The lower mold core 22 is embedded in the side of the lower template 21 facing the upper mold assembly 10 and is injection molded with the upper mold assembly 10 to form a product when the mold is closed. The connector 23 is disposed on the side of the lower template 21 away from the upper mold assembly 10 and is connected to the lower template 21. The fixing plate 24 is spaced apart from the lower template 21 and is connected to the connector 23 and the fixing member 35 respectively. A storage space 241 is formed between the fixing plate 24, the connector 23, and the lower template 21. The storage space 241 is used to store the driving member 34.

[0058] Thus, by setting the specific mechanism of the lower mold assembly 20, a storage space 241 is formed between the connecting piece 23, the fixing plate 24 and the lower mold plate 21, so that the storage space 241 can accommodate the driving piece 34, thereby making the injection mold 100 structurally compact and conducive to the reasonable layout of the injection mold 100.

[0059] Please see Figure 5 In some embodiments, the fixing member 35 includes a fixing part 351, a supporting part 353, and a supporting part 352. The fixing part 351 is connected to the lower template 21, and the supporting part 352 protrudes from the side wall of the fixing part 351 and surrounds the fixing part 351 to form a supporting space 3521. The supporting space 3521 is used to accommodate the movable part 31. The two ends of the supporting part 353 are respectively connected to the fixing plate 24 and the fixing part 351, and the supporting part 353 is used to support the fixing part 351.

[0060] Thus, by setting the specific structure of the aforementioned fixing member 35, the fixing member 35 is connected to the fixing plate 24 and the lower template 21 respectively, so that the fixing member 35 stably supports the movable member 31 and the cutter body 331 in the initial position, ensuring the stability of injection molding. In addition, the supporting space 3521 houses the movable member 31, thereby limiting the orientation of the movable member 31, preventing the movable member 31 from swaying, and ensuring that the movable member 31 moves stably along the mold opening direction towards or away from the upper mold assembly 10, thereby improving the cutting stability of the cutter assembly 30.

[0061] Please see Figure 2 and Figure 4 In some embodiments, the lower template 21 is provided with a limiting groove 211 on the side facing the connector 23. The limiting groove 211 accommodates the movable part 31. The bottom of the limiting groove 211 is away from the upper mold assembly 10 and is used to abut the movable part 31 to limit the movement distance of the movable part 31.

[0062] Thus, by setting the aforementioned limiting groove 211, the limiting groove 211 is positioned away from the bottom of the upper mold assembly 10 and abuts against the movable part 31, thereby limiting the movement distance of the movable part 31 and preventing the first cutting blade 32 and the second cutting blade 33 from colliding with the upper mold assembly 10 due to excessive movement distance, thus ensuring the cutting stability of the cutting blade assembly 30.

[0063] Please see Figure 2 and Figure 3 In some embodiments, the driving member 34 includes a pushing body 341, an elastic body 342, and a driving body 343. The pushing body 341 is movably disposed through the fixing member 35 and abuts against the movable member 31. The elastic body 342 is sleeved on the pushing body 341, and its two ends elastically abut against the fixing member 35 and the end of the pushing body 341 away from the upper mold assembly 10, respectively. The driving body 343 is connected to the pushing body 341 and is used to drive the pushing body 341 to push the movable member 31 closer to the upper mold assembly 10 to compress the elastic body 342 against the fixing member 35. Exemplarily, the elastic body 342 can be a spring, and the driving body 343 can be a hydraulic cylinder.

[0064] Thus, by setting the specific structure of the driving component 34, the driving body 343 drives the pushing body 341 to push the movable component 31 closer to the upper mold assembly 10, and the pushing body 341 compresses the elastic element 36 to the fixed element 35. This allows the elastic element 342 to buffer the excessive pushing force applied to the movable component 31 by the pushing body 341, enabling the pushing body 341 to flexibly push the movable component 31, which helps improve the driving stability of the driving component 34. Please refer to [link / reference]. Figure 6 In some embodiments, the injection mold 100 further includes an ejector assembly 40, which includes a first ejector pin 41, a second ejector pin 42, and an ejector plate 43. The first ejector pin 41 and the second ejector pin 42 are spaced apart and can both be movably inserted into the lower mold assembly 20 and the movable member 31. The ejector plate 43 is connected to the first ejector pin 41 and the second ejector pin 42 respectively, and the ejector plate 43 is used to drive the first ejector pin 41 and the second ejector pin 42 to move closer to the upper mold assembly 10 when the mold is opened, so that the first ejector pin 41 and the second ejector pin 42 push the cut product and the connecting material away from the lower mold assembly 20 respectively.

[0065] Thus, by setting the ejector pin assembly 40 as described above, when the upper mold assembly 10 and the lower mold assembly 20 open, the ejector plate 43 drives the first ejector pin 41 and the second ejector pin 42 to move closer to the upper mold assembly 10, so that the first ejector pin 41 and the second ejector pin 42 push the cut product and the connecting material removal lower mold core 22 respectively, making it easier to remove the cut product, while avoiding the connecting material remaining in the lower mold core 22, which is beneficial to the repeated operation of the injection mold 100.

[0066] Please see Figure 6 In some embodiments, the ejector pin assembly 40 further includes a limiting member 44, which is disposed on the side of the ejector pin plate 43 facing the upper mold assembly 10 and connected to the ejector pin plate 43. The limiting member 44 is used to abut against a specific component of the lower mold assembly 20 under the action of the ejector pin plate 43 to limit the movement distance of the ejector pin plate 43.

[0067] Thus, by setting the aforementioned limiting member 44, when the ejector plate 43 moves close to the upper mold assembly 10, the limiting member 44 abuts against the lower mold plate 21 to limit the movement distance of the ejector plate 43, preventing the first ejector member 41 and the second ejector member 42 from moving too far and colliding with the upper mold assembly 10.

[0068] The working process of the injection mold 100 described above is roughly as follows:

[0069] First, the upper mold assembly 10 and the lower mold assembly 20 are closed, and the product is formed by injection molding, which consists of a continuous material with a first sprue and a second sprue.

[0070] Then, the driving body 343 drives the pushing body 341 to move closer to the upper mold assembly 10, so that the pushing body 341 compresses the elastic member 36 to the fixed member 35 and flexibly pushes the movable member 31 closer to the upper mold assembly 10 to move a first preset distance L. The first cutter member 32 is inserted into the first material head, and the abutment groove 311 of the movable member 31 abuts against the protrusion 332 away from the groove wall of the upper mold assembly 10, so that the end of the cutter body 331 and the end of the first cutter member 32 are on the same horizontal plane.

[0071] Next, the driving body 343 drives the pushing body 341 to move closer to the upper mold assembly 10 and continue to move a second preset distance, so that the movable part 31 drives the first cutting part 32 and the cutting body 331 to move closer to the upper mold assembly 10 in a synchronized manner, and cut off the first material head and the second material head respectively;

[0072] Finally, the upper mold assembly 10 and the lower mold assembly 20 open, and the ejector plate 43 drives the first ejector pin 41 and the second ejector pin 42 to push the cut product and the connecting material out of the lower mold core 22 respectively. Then the cut product and the connecting material are taken out, thereby realizing that the first and second material heads of different thicknesses are cut simultaneously inside the injection mold 100 by a set of cutting blade assemblies 30, avoiding damage to the product during injection and cutting, thereby optimizing the layout and improving product quality.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. An injection mold for injection molding a product and a continuous material, the continuous material having a first sprue and a second sprue respectively connected to the product, characterized in that, The injection mold includes: Upper mold component; The lower mold assembly is fitted with the upper mold assembly, and the lower mold assembly and the upper mold assembly are injection molded to form the product when the mold is closed; and A cutting assembly includes a movable component, a first cutting component, a second cutting component, and a driving component. The movable component is movably disposed on the side of the lower mold assembly opposite to the upper mold assembly. The first cutting component is movably disposed through the lower mold assembly along the mold opening direction and is fixedly connected to the movable component. The second cutting component is movably disposed through the lower mold assembly along the mold opening direction and is buoyantly disposed on the movable component. The driving component is connected to the movable component. In the initial position, the second cutter is away from the upper mold assembly relative to the first cutter. The driving member is used to drive the movable member to move toward the upper mold assembly a first preset distance, so that the first cutter is inserted into the first material head and the second cutter abuts against the movable member. The driving member is also used to drive the movable member to move toward the upper mold assembly a second preset distance, so that the first cutter and the second cutter cut off the first material head and the second material head respectively.

2. The injection mold as described in claim 1, characterized in that, The movable component is provided with a retaining groove. The second cutting component includes a cutting body and a protrusion. The cutting body is movably disposed in the lower mold assembly and the movable component. The protrusion protrudes from the side wall of the cutting body and is located in the retaining groove. The retaining groove and the protrusion are in clearance fit. The groove wall of the retaining groove adjacent to the upper mold assembly is used to abut against the protrusion to limit the cutting body to the initial position. The groove wall of the retaining groove away from the upper mold assembly is used to abut against the protrusion so that the movable component drives the cutting body to move synchronously.

3. The injection mold as described in claim 2, characterized in that, In the initial position, the distance between the support groove away from the groove wall of the upper mold assembly and the protrusion is equal to the first preset distance.

4. The injection mold as described in claim 2, characterized in that, The cutting blade assembly also includes: A fixing member is provided on the side of the lower mold assembly opposite to the upper mold assembly and connected to the lower mold assembly. The fixing member is used to abut against the cutter body and the movable member in the initial position.

5. The injection mold as described in claim 4, characterized in that, The movable component includes: A movable body is disposed between the fixed member and the lower mold assembly. The movable body has a positioning groove and a receiving groove. The positioning groove extends through the movable body, and the receiving groove is located on the side of the movable body opposite to the upper mold assembly. A connecting body is disposed on the side of the movable body opposite to the upper mold assembly and is detachably connected to the movable body. The side of the connecting body opposite to the upper mold assembly abuts against the driving member. The side of the connecting body facing the movable body is provided with a storage groove and a positioning part at intervals. The storage groove is connected to the receiving groove to form the abutment groove. The positioning part is used to be inserted into the positioning groove to position the movable body. The driving member is movably inserted through the fixing member and abuts against the connecting body.

6. The injection mold as described in claim 4, characterized in that, The movable component has a mounting groove on the side facing the upper mold assembly. The cutter assembly also includes an elastic component, which is housed in the mounting groove. The two ends of the elastic component elastically abut against the bottom of the mounting groove and the lower mold assembly, respectively. The elastic component is used to drive the movable component to reset.

7. The injection mold as described in claim 6, characterized in that, The lower mold assembly includes: The lower template is disposed opposite to the upper template assembly and abuts against the elastic member; the lower template is connected to the fixing member. The lower mold core is embedded in the lower mold plate on the side facing the upper mold assembly and is injection molded with the upper mold assembly to form the product when the mold is closed; A connector is provided on the side of the lower mold plate opposite to the upper mold assembly and is connected to the lower mold plate; and A fixing plate is spaced apart from the lower template and is connected to the connector and the fixing member respectively. A storage space is formed between the fixing plate, the connector and the lower template, and the storage space is used to store the driving member.

8. The injection mold as described in claim 7, characterized in that, The fastener includes: The fixing part is connected to the lower template; A supporting portion protrudes from the side wall of the fixing portion and surrounds the fixing portion to form a supporting space, the supporting space being used to accommodate the movable component; and The support portion has two ends connected to the fixing plate and the fixing portion, respectively, and the support portion is used to support the fixing portion.

9. The injection mold as described in claim 7, characterized in that, The lower template has a limiting groove on the side facing the connector. The limiting groove accommodates the movable part. The limiting groove is away from the bottom of the upper mold assembly and is used to abut against the movable part to limit the movement distance of the movable part.

10. The injection mold as described in claim 4, characterized in that, The driving component includes: The pushing body is movably inserted through the fixed member and abuts against the movable member; An elastic body, sleeved on the pushing body, wherein both ends of the elastic body elastically abut against the fixing member and the end of the pushing body away from the upper mold assembly, respectively; and A driving body, connected to the pushing body, is used to drive the pushing body to move the movable part closer to the upper mold assembly, so as to compress the elastic body to the fixed part.

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