In-mold trim injection mold

Abstract

The utility model provides a kind of injection mould of in-mould cutting off sprue, including top plate, fixed plate, female mould core, male mould core, movable template, square iron and bottom plate, first runner is set up in female mould core, after moulding, by male mould core and female mould core mutually closed to form cavity and second runner, first runner, second runner and cavity are sequentially communicated, the communication of second runner and cavity is equipped with insert, glue injection channel is set up in the upper portion of insert and is communicated with second runner and cavity, one side of insert is equipped with thimble cutter, the bottom end of thimble cutter is connected and equipped with thimble panel and thimble bottom plate, product thimble and sprue thimble are connected and equipped on thimble panel, the utility model has the advantages that: drive thimble bottom plate to move upwards, drive thimble panel to move upwards together, then drive thimble cutter, product thimble and sprue thimble synchronous movement, thimble cutter cuts off sprue head in second runner, avoids artificial cutting process, improves production efficiency, simple structure.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold production technology, and more specifically, relates to an injection mold for in-mold cutting of the sprue. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The injection molding process can be roughly divided into the following six stages: mold closing, injection, pressure holding, cooling, mold opening, and product removal. The advantages of injection molding are high production speed and efficiency, automated operation, a wide variety of colors and shapes (from simple to complex), and sizes ranging from large to small. It also produces dimensionally accurate products, facilitates product updates and replacements, and can create complex shapes. Injection molding is suitable for mass production and molding of complex-shaped products.

[0003] In traditional injection molding, the product and gating system (sprue) are ejected together after mold opening. Subsequent manual or additional cutting equipment is required to separate the sprue from the product. This process is characterized by low production efficiency, high labor costs, time-consuming and labor-intensive operations, and the risk of damaging the product's appearance or structure due to improper handling. While some in-mold sprue cutting solutions exist, they are often structurally complex, increasing mold manufacturing costs and maintenance difficulty, and their operational reliability needs improvement. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned technical problems, this utility model proposes an injection mold for in-mold cutting of the sprue, including a top plate 10, a fixed template 20, a female mold core 30, a male mold core 40, a movable template 50, a square iron 60, and a bottom plate 70. The bottom end of the top plate 10 is connected to the fixed template 20, the bottom of the fixed template 20 is connected to the female mold core 30, the top two sides of the bottom plate 70 are connected to the square iron 60, the top of the square iron 60 is connected to the movable template 50, the top of the movable template 50 is connected to the male mold core 40, and the female mold core 30 has a first runner 80. After mold closing, the male mold core 40 and the... The female mold cores 30 are closed to form a cavity 100 and a second flow channel 90. The first flow channel 80 is connected to the second flow channel 90, and the second flow channel 90 is connected to the cavity 100. An insert 110 is provided at the connection between the second flow channel 90 and the cavity 100. The insert 110 is fixedly sleeved with the male mold core 40, and the top of the insert 110 is higher than the upper surface of the male mold core 40. A glue injection groove 120 is provided on the upper part of the insert 110, which is connected to the second flow channel 90 and the cavity 100. The side of the insert 110 away from the second flow channel 90 is provided with... An ejector cutter 130 is movably inserted into the male mold core 40, with its top end flush with or below the lower edge of the injection groove 120 opening. An ejector plate 140 and an ejector base plate 150 are connected to the bottom end of the ejector cutter 130. The ejector base plate 150 is movably connected to the base plate 70. The top of the ejector base plate 150 is connected to the ejector plate 140. A product ejector pin 160 and a sprue ejector pin are connected to the ejector plate 140. The upper parts of both the product ejector pin 160 and the sprue ejector pin are movably sleeved with the male mold core 40. This utility model... The advantages of this design are as follows: The ejector base plate 150 is driven to move upwards, causing the ejector panel 140 to move upwards as well. This, in turn, causes the ejector cutter 130, the product ejector 160, and the sprue ejector to move synchronously. The ejector cutter 130 cuts off the sprue head located in the second flow channel 90. The product ejector 160 and the sprue head eject the injection molded product and the cut sprue head respectively, effectively separating the sprue head from the injection molded product. This eliminates the need for manual cutting, improves production efficiency, and features a simple structure, easy operation, convenient adjustment, low cost, wide applicability, and long service life.

[0005] An injection mold for in-mold sprue cutting includes a top plate 10, a fixed template 20, a female mold core 30, a male mold core 40, a movable template 50, a square iron 60, and a bottom plate 70. The bottom end of the top plate 10 is connected to the fixed template 20, the bottom of the fixed template 20 is connected to the female mold core 30, the top two sides of the bottom plate 70 are connected to the square iron 60, the top of the square iron 60 is connected to the movable template 50, and the top of the movable template 50 is connected to the male mold core 40. The female mold core 30 has a first runner 80. After mold closing, the male mold core 40 and the female mold core 30 close together to form a cavity 100 and a second runner 90. The first runner 80 and the second runner 90 are connected, and the second runner 90 is connected to the cavity 100. An insert 110 is provided at the connection between the second runner 90 and the cavity 100. The insert 110 is connected to the male mold core 40. The insert 110 is fixedly connected, and the top of the insert 110 is higher than the upper surface of the male mold core 40. The upper part of the insert 110 is provided with a glue injection groove 120 that communicates with the second flow channel 90 and the cavity 100. The side of the insert 110 away from the second flow channel 90 is provided with an ejector cutter 130. The ejector cutter 130 is movably inserted into the male mold core 40, and the top of the ejector cutter 130 is flush with or lower than the lower edge of the opening of the glue injection groove 120. The bottom end of the ejector cutter 130 is connected to an ejector panel 140 and an ejector base plate 150. The ejector base plate 150 is movably connected to the base plate 70. The top of the ejector base plate 150 is connected to the ejector panel 140. The ejector panel 140 is connected to a product ejector pin 160 and a sprue ejector pin. The upper parts of the product ejector pin 160 and the sprue ejector pin are movably connected to the male mold core 40.

[0006] Furthermore, a first inclined surface 170 is provided in the glue injection channel 120. The first inclined surface 170 serves as a guide, which facilitates the material head ejector pin to eject the cut sprue material head.

[0007] Furthermore, the upper outer sidewalls of the insert 110 are all inclined second slopes 180, which facilitates the second slopes 180 to act as guides during mold closing.

[0008] Furthermore, the bottom of the male mold core 40 is connected to a stop 190 corresponding to the position of the insert 110. The stop 190 serves to limit the movement and prevent the insert 110 from sliding downward.

[0009] Furthermore, the stop block 190 has an outward-facing groove 200 on the side near the ejector pin cutter 130 to serve as a clearance mechanism.

[0010] Furthermore, the lower part of the insert 110 is provided with an outwardly extending retaining plate 210 on the side away from the ejector pin cutter 130. The retaining plate 210 is used to prevent the insert 110 from detaching during mold opening and serves as a limiting function.

[0011] Furthermore, a first guide sleeve 220 is fitted around the four corners of the fixed template 20, and a first guide post 230 matching the position of the first guide sleeve 220 is fitted onto the movable template 50, with the upper part of the first guide post 230 being movably connected to the first guide sleeve 220.

[0012] Furthermore, guide posts 240 are provided at the four corners of the ejector panel 140. The bottom end of the guide post 240 is connected to the ejector panel 140, and the upper part of the guide post 240 is movably connected to the moving template 50. The guide post 240 is used to guide the ejector panel 140 during the ejection and retraction process.

[0013] Furthermore, a return spring 250 is sleeved on the guide post 240. The top end of the return spring 250 abuts against the moving template 50, and the bottom end abuts against the ejector pin panel 140.

[0014] Furthermore, a second guide post 260 is connected to the top of the base plate 70, and a second guide sleeve 270 is movably connected to the second guide post 260. The second guide sleeve 270 is sleeved with the ejector plate 140 and the ejector base plate 150.

[0015] The beneficial effects of this utility model are as follows: This utility model proposes an injection mold for in-mold cutting of the sprue, including a top plate 10, a fixed template 20, a female mold core 30, a male mold core 40, a movable template 50, a square iron 60, and a bottom plate 70. The bottom end of the top plate 10 is connected to the fixed template 20, the bottom of the fixed template 20 is connected to the female mold core 30, the top two sides of the bottom plate 70 are connected to the square iron 60, the top of the square iron 60 is connected to the movable template 50, and the top of the movable template 50 is connected to the male mold core 40. The female mold core 30 has a first runner 80. After mold closing, the male mold core 40 and the female mold core 30 form a runner 80. The female mold cores 30 are closed to form a cavity 100 and a second runner 90. The first runner 80 is connected to the second runner 90, and the second runner 90 is connected to the cavity 100. An insert 110 is provided at the connection between the second runner 90 and the cavity 100. The insert 110 is fixedly sleeved with the male mold core 40, and the top of the insert 110 is higher than the upper surface of the male mold core 40. A glue injection groove 120 is provided on the upper part of the insert 110, which is connected to the second runner 90 and the cavity 100. A top is provided on the side of the insert 110 away from the second runner 90. A pin cutter 130 is movably inserted into the male mold core 40, with its top end flush with or below the lower edge of the injection groove 120 opening. The bottom end of the pin cutter 130 is connected to a pin panel 140 and a pin base plate 150. The pin base plate 150 is movably connected to the base plate 70. The top of the pin base plate 150 is connected to the pin panel 140. A product ejector pin 160 and a sprue ejector pin are connected to the pin panel 140. The upper parts of both the product ejector pin 160 and the sprue ejector pin are movably sleeved with the male mold core 40. This utility model... The advantages of this design are as follows: The ejector base plate 150 is driven to move upwards, causing the ejector panel 140 to move upwards as well. This, in turn, causes the ejector cutter 130, the product ejector 160, and the sprue ejector to move synchronously. The ejector cutter 130 cuts off the sprue head located in the second flow channel 90. The product ejector 160 and the sprue head eject the injection molded product and the cut sprue head respectively, effectively separating the sprue head from the injection molded product. This eliminates the need for manual cutting, improves production efficiency, and features a simple structure, easy operation, convenient adjustment, low cost, wide applicability, and long service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an injection mold for in-mold cutting of the sprue according to the present invention.

[0017] Figure 2 This is a partial structural diagram of an injection mold for in-mold cutting of the sprue according to the present invention.

[0018] Figure 3 This is a partial structural diagram of an injection mold for in-mold cutting of the sprue according to the present invention.

[0019] Figure 4 This is a partial enlarged view of an injection mold for in-mold cutting of the sprue according to the present invention.

[0020] Figure 5 This is a partial structural diagram of an injection mold for in-mold cutting of the sprue according to the present invention.

[0021] Figure 6 This is a partial structural diagram of an injection mold for in-mold cutting of the sprue according to the present invention.

[0022] Figure 7 This is a partial structural diagram of an injection mold for in-mold cutting of the sprue according to the present invention.

[0023] Figure 8 This is a partial structural diagram of an injection mold for in-mold cutting of the sprue according to the present invention.

[0024] Explanation of key component symbols:

[0025] Top plate 10, fixed template 20, female mold core 30, male mold core 40, moving template 50, square iron 60, bottom plate 70, first runner 80, second runner 90, cavity 100, insert 110, injection groove 120, ejector cutter 130, ejector panel 140, ejector base plate 150, product ejector pin 160, first inclined surface 170, second inclined surface 180, stop block 190, groove 200, clamping platform 210, first guide sleeve 220, first guide post 230, guide post 240, return spring 250, second guide post 260, second guide sleeve 270.

[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0027] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0028] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0029] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections.

[0030] Example 1

[0031] like Figure 1 The diagram shown is a schematic representation of the overall structure of an injection mold for in-mold cutting of the sprue according to this utility model; as shown... Figure 2 The diagram shown is a partial structural schematic of an injection mold for in-mold cutting of the sprue according to this utility model; as shown... Figure 3 The diagram shown is a partial structural schematic of an injection mold for in-mold cutting of the sprue according to this utility model; as shown... Figure 4 The image shown is a partially enlarged view of an injection mold for in-mold cutting of the sprue according to this utility model; as shown... Figure 5 The diagram shown is a partial structural schematic of an injection mold for in-mold cutting of the sprue according to this utility model; as shown... Figure 6 The diagram shown is a partial structural schematic of an injection mold for in-mold cutting of the sprue according to this utility model; as shown... Figure 7 The diagram shown is a partial structural schematic of an injection mold for in-mold cutting of the sprue according to this utility model; as shown... Figure 8 The diagram shown is a partial structural schematic of an injection mold for in-mold cutting of the sprue according to this utility model.

[0032] An injection mold for in-mold sprue cutting includes a top plate 10, a fixed mold plate 20, a female mold core 30, a male mold core 40, a movable mold plate 50, a square iron plate 60, and a bottom plate 70. The bottom end of the top plate 10 is connected to the fixed mold plate 20, the bottom of the fixed mold plate 20 is connected to the female mold core 30, the top two sides of the bottom plate 70 are connected to the square iron plate 60, the top of the square iron plate 60 is connected to the movable mold plate 50, and the top of the movable mold plate 50 is connected to the male mold core 40. The female mold core 30 has a first runner 80. After mold closing, the male mold core 40 and the female mold core 30 close together to form a cavity 100 and a second runner 90. The first flow channel 80 is connected to the second flow channel 90, and the second flow channel 90 is connected to the cavity 100. An insert 110 is provided at the connection between the second flow channel 90 and the cavity 100. The insert 110 is fixedly sleeved with the male mold core 40, and the top of the insert 110 is higher than the upper surface of the male mold core 40. A glue injection groove 120 communicating with the second flow channel 90 and the cavity 100 is provided on the upper part of the insert 110. An ejector pin cutter 130 is provided on the side of the insert 110 away from the second flow channel 90, and the ejector pin cutter 130 is used to cut the material formed in the second flow channel. The sprue head of the injection molded product within 90mm allows for effective separation of the sprue head from the injection molded product. The ejector cutter 130 is movably inserted into the male mold core 40, and the top of the ejector cutter 130 is flush with or lower than the lower edge of the opening of the injection channel 120. The bottom end of the ejector cutter 130 is connected to the ejector panel 140 and the ejector base plate 150. The ejector base plate 150 is movably connected to the base plate 70. The top of the ejector base plate 150 is connected to the ejector panel 140. The ejector panel 140 is connected to the product ejector pin 160 and the sprue head ejector pin (not shown in the figure). The product ejector pin 160 and the sprue head ejector pin are connected to the male mold core 40. The upper part of the ejector pin is movably connected to the male mold core 40. The product ejector pin 160 is used to eject the injection molded product after cutting and separation, and the ejector pin is used to eject the sprue head after cutting and separation. When the injection molding is completed and the mold is opened, the ejector base plate 150 is driven to move upward, which drives the ejector panel 140 to move upward together, thereby driving the ejector cutter 130, the product ejector pin 160 and the ejector pin to move synchronously. The ejector cutter 130 cuts the sprue head located in the second runner 90, and the product ejector pin 160 and the ejector pin eject the injection molded product and the cut sprue head respectively.

[0033] The glue injection channel 120 is provided with a first inclined surface 170, which serves as a guide to facilitate the ejector pin from the cut sprue head.

[0034] The upper outer side walls of the insert 110 are all inclined second slopes 180, which facilitate the second slopes 180 to act as guides during mold closing.

[0035] The bottom of the male mold core 40 is connected to a stop 190 corresponding to the position of the insert 110. The stop 190 serves to limit the movement and prevent the insert 110 from sliding downward.

[0036] The stop block 190 has an outward-facing groove 200 on the side near the ejector pin cutter 130, which serves to avoid obstruction.

[0037] The lower part of the insert 110 is provided with an outwardly extending retaining plate 210 on the side away from the ejector pin cutter 130. The retaining plate 210 is used to prevent the insert 110 from detaching during mold opening and serves as a limiting function.

[0038] The fixed template 20 is fitted with a first guide sleeve 220 at its four corners. The movable template 50 is fitted with a first guide post 230 that matches the position of the first guide sleeve 220. The upper part of the first guide post 230 is movably connected to the first guide sleeve 220. The first guide post 230 and the first guide sleeve 220 are used to provide precise guidance and positioning when the mold is opened or closed.

[0039] The ejector panel 140 has guide posts 240 at its four corners. The bottom end of the guide post 240 is connected to the ejector panel 140, and the upper part of the guide post 240 is movably connected to the moving template 50. The guide post 240 is used to guide the ejector panel 140 during its ejection and retraction, ensuring that the ejector panel 140 moves smoothly and accurately, and avoiding deviation or jamming.

[0040] A return spring 250 is sleeved on the guide post 240. The top end of the return spring 250 abuts against the moving template 50, and the bottom end abuts against the ejector plate 140. The return spring 250 is used to drive the ejector plate 140 back under its elastic force when the mold is closed, thereby forcibly resetting the ejector cutter 130, the product ejector pin 160 and the material head ejector pin to avoid damage.

[0041] The top end of the base plate 70 is connected to a second guide post 260, and a second guide sleeve 270 is movably connected to the second guide post 260. The second guide sleeve 270 is sleeved with the ejector plate 140 and the ejector base plate 150. The second guide post 260 and the second guide sleeve 270 play a guiding role during the ejection and retraction of the ejector plate 140 and the ejector base plate 150 to ensure smooth movement.

[0042] The beneficial effects of this utility model are as follows: This utility model proposes an injection mold for in-mold cutting of the sprue, including a top plate 10, a fixed template 20, a female mold core 30, a male mold core 40, a movable template 50, a square iron 60, and a bottom plate 70. The bottom end of the top plate 10 is connected to the fixed template 20, the bottom of the fixed template 20 is connected to the female mold core 30, the top two sides of the bottom plate 70 are connected to the square iron 60, the top of the square iron 60 is connected to the movable template 50, and the top of the movable template 50 is connected to the male mold core 40. The female mold core 30 has a first runner 80. After mold closing, the male mold core 40 and the female mold core 30 form a runner 80. The female mold cores 30 are closed to form a cavity 100 and a second runner 90. The first runner 80 is connected to the second runner 90, and the second runner 90 is connected to the cavity 100. An insert 110 is provided at the connection between the second runner 90 and the cavity 100. The insert 110 is fixedly sleeved with the male mold core 40, and the top of the insert 110 is higher than the upper surface of the male mold core 40. A glue injection groove 120 is provided on the upper part of the insert 110, which is connected to the second runner 90 and the cavity 100. A top is provided on the side of the insert 110 away from the second runner 90. A pin cutter 130 is movably inserted into the male mold core 40, with its top end flush with or below the lower edge of the injection groove 120 opening. The bottom end of the pin cutter 130 is connected to a pin panel 140 and a pin base plate 150. The pin base plate 150 is movably connected to the base plate 70. The top of the pin base plate 150 is connected to the pin panel 140. A product ejector pin 160 and a sprue ejector pin are connected to the pin panel 140. The upper parts of both the product ejector pin 160 and the sprue ejector pin are movably sleeved with the male mold core 40. This utility model... The advantages of this design are as follows: The ejector base plate 150 is driven to move upwards, causing the ejector panel 140 to move upwards as well. This, in turn, causes the ejector cutter 130, the product ejector 160, and the sprue ejector to move synchronously. The ejector cutter 130 cuts off the sprue head located in the second flow channel 90. The product ejector 160 and the sprue head eject the injection molded product and the cut sprue head respectively, effectively separating the sprue head from the injection molded product. This eliminates the need for manual cutting, improves production efficiency, and features a simple structure, easy operation, convenient adjustment, low cost, wide applicability, and long service life.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. 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 patent should be determined by the appended claims.

Claims

1. An injection mold for in-mold cutting of sprue, comprising a top plate (10), a fixed template (20), a female mold core (30), a male mold core (40), a movable template (50), a square iron (60), and a bottom plate (70), wherein the bottom end of the top plate (10) is connected to the fixed template (20), the bottom of the fixed template (20) is connected to the female mold core (30), the top two sides of the bottom plate (70) are connected to the square iron (60), the top of the square iron (60) is connected to the movable template (50), the top of the movable template (50) is connected to the male mold core (40), a first runner (80) is provided on the female mold core (30), and after mold closing, the male mold core (40) and the female mold core (30) close together to form a cavity (100) and a second runner (90), wherein the first runner (80) is connected to the second runner (90), and the second runner (90) is connected to the cavity (100), characterized in that: An insert (110) is provided at the connection between the second flow channel (90) and the cavity (100). The insert (110) is fixedly sleeved with the male mold core (40), and the top of the insert (110) is higher than the upper surface of the male mold core (40). The upper part of the insert (110) is provided with a glue injection groove (120) that communicates with the second flow channel (90) and the cavity (100). An ejector cutter (130) is provided on the side of the insert (110) away from the second flow channel (90). The ejector cutter (130) is movably inserted through the male mold core (40). The top of the ejector cutter (130) is flush with or lower than the lower edge of the opening of the injection groove (120). The bottom end of the ejector cutter (130) is connected to the ejector panel (140) and the ejector base plate (150). The ejector base plate (150) is movably connected to the base plate (70). The top of the ejector base plate (150) is connected to the ejector panel (140). The ejector panel (140) is connected to the product ejector (160) and the material head ejector. The upper parts of the product ejector (160) and the material head ejector are movably sleeved with the male mold core (40).

2. The in-mold trimmable injection mold of claim 1, wherein: The glue injection channel (120) is provided with a first inclined surface (170), which serves as a guide to facilitate the ejector pin from the cut sprue.

3. The in-mold trimmable injection mold of claim 1, wherein: The upper outer sidewalls of the insert (110) are all inclined second slopes (180), which facilitate the second slopes (180) to act as guides when the mold is closed.

4. The in-mold trimmable injection mold of claim 1, wherein: The bottom of the male mold core (40) is connected to a stop (190) corresponding to the position of the insert (110). The stop (190) serves as a limit to prevent the insert (110) from sliding downward.

5. The injection mold for in-mold cutting of the sprue according to claim 4, characterized in that: The stop block (190) has an outward-facing groove (200) on the side near the ejector pin cutter (130) to avoid obstruction.

6. The in-mold trimmable injection mold of claim 5, wherein: The lower part of the insert (110) away from the ejector pin cutter (130) is provided with an outwardly extending retaining plate (210), which is used to prevent the insert (110) from detaching when the mold is opened and serves as a limiting function.

7. The in-mold trimmable injection mold of claim 1, wherein: The fixed template (20) is fitted with a first guide sleeve (220) at the four corners, and the movable template (50) is fitted with a first guide post (230) that matches the position of the first guide sleeve (220). The upper part of the first guide post (230) is movably connected to the first guide sleeve (220).

8. The in-mold trimmable injection mold of claim 7, wherein: The ejector panel (140) is provided with guide posts (240) at its four corners. The bottom end of the guide post (240) is connected to the ejector panel (140), and the upper part of the guide post (240) is movably connected to the moving template (50). The guide post (240) is used to guide the ejector panel (140) during its ejection and retraction.

9. The injection mold for in-mold cutting of the sprue according to claim 8, characterized in that: A reset spring (250) is sleeved on the guide post (240). The top end of the reset spring (250) abuts against the moving template (50), and the bottom end abuts against the ejector plate (140).

10. The in-mold trimmable injection mold of claim 9, wherein: The top of the base plate (70) is connected to a second guide post (260), and a second guide sleeve (270) is movably connected to the second guide post (260). The second guide sleeve (270) is sleeved with the ejector plate (140) and the ejector base plate (150).

Images