Mold core replacing mechanism and injection mold

Abstract

The utility model discloses a mold core replacing device and an injection mold, comprising a mold shaft, a mold core, a mold core replacing device and a mold core replacing device, the adjusting structure is connected with the die shaft, and when the adjusting structure moves in the radial direction of the die shaft, the die shaft can move in the axial direction of the die shaft. According to the utility model, the adjusting structure is matched with the mold shaft, so that the mold shaft can be driven to move by pulling the adjusting structure, the ejection of the mold core is realized, the mold core can be conveniently replaced by the upper mold or the lower mold, and the replacement is more convenient and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold core replacement mechanism and an injection mold. Background Art

[0002] Existing molds consist of an upper mold and a lower mold. When a plastic product is to be injection molded, the mold is in a closed state. At this time, molten rubber is injected through the injection port and injection molded through the mold core inside the mold. To produce different plastic products, the mold core needs to be replaced with a different shape for injection molding. Existing methods are to manually replace the mold core when the mold is opened, which is difficult to operate and has low replacement efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] In order to solve the above problems, the present application provides a first aspect of a mold core replacement mechanism, comprising:

[0005] A mold shaft, wherein a mold core is provided on the top of the mold shaft;

[0006] The adjusting structure is connected to the mold shaft. When the adjusting structure moves radially along the mold shaft, the mold shaft will move along its axial direction.

[0007] Optionally, the regulating structure includes:

[0008] The adjusting member includes at least one adjusting plate arranged obliquely downward, at least one adjusting groove is opened obliquely downward on the outer circumference of the mold shaft, and the adjusting plate is arranged in the adjusting groove.

[0009] Optionally, the adjusting member further includes a hand-held portion and a driving portion, the hand-held portion is connected to the driving portion, and the adjusting plate is arranged on the driving portion.

[0010] Optionally, a driving groove for accommodating the mold shaft is formed on a side of the driving portion away from the handheld portion, and the adjustment plate is arranged on a side of the driving groove facing the mold shaft.

[0011] Optionally, a retaining groove is further provided on the outer circumference of the mold shaft, the retaining groove is provided along the axis direction of the mold shaft, and the retaining groove is connected to the adjustment groove.

[0012] Optionally, the adjustment structure further includes a stopper, which is provided on one side of the hand-held part. When the highest point of the adjustment plate moves to the stopper groove, the stopper contacts the hand-held part.

[0013] Optionally, a pulling hole is provided on the hand-held portion, and the stopper is located in the pulling hole.

[0014] The second aspect of the present application provides an injection mold, comprising an upper mold body and a lower mold body, the upper mold body comprising a core replacement mechanism as described in any technical solution in the first aspect of the present application, and the lower mold body comprising a core replacement mechanism as described in any technical solution in the first aspect of the present application.

[0015] Optionally, the upper mold body further includes:

[0016] cover;

[0017] a hot runner fixing plate, the hot runner fixing plate being arranged on the cover plate;

[0018] an upper mold cavity fixing plate, the upper mold cavity fixing plate being arranged on a side of the hot runner fixing plate away from the cover plate;

[0019] The upper model cavity plate is arranged on the side of the upper model cavity fixing plate away from the hot runner fixing plate, and the upper model cavity fixing plate and the upper model cavity plate are both provided with upper mounting holes, the adjusting member is arranged between the upper model cavity fixing plate and the hot runner fixing plate, the mold shaft is arranged in the upper mounting hole, and the stop member is arranged on the upper model cavity fixing plate.

[0020] Optionally, the lower mold body further includes:

[0021] base plate;

[0022] an ejector pin fixing plate, the ejector pin fixing plate being arranged on the bottom plate;

[0023] A lower mold cavity plate is provided on the side of the ejector fixing plate away from the bottom plate, a lower mounting hole is provided on the lower mold cavity plate, the adjusting member is provided between the ejector fixing plate and the lower mold cavity plate, the mold shaft is provided in the lower mounting hole, and the stopper is provided on the ejector fixing plate. Beneficial effects

[0024] The core replacement mechanism and injection mold provided in the embodiment of the present invention cooperate with the adjustment structure and the mold shaft, so that pulling the adjustment structure can drive the mold shaft to move, thereby realizing the ejection of the mold core, facilitating the replacement of the mold core by the upper mold or the lower mold, and making the replacement more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the mold core replacement mechanism of the present utility model;

[0026] Figure 2 This is a structural diagram of the mold shaft of the present utility model;

[0027] Figure 3This is a structural diagram of the regulating member of the present utility model;

[0028] Figure 4 This is a structural diagram of the injection mold of the present utility model.

[0029] [Description of Reference Numerals]

[0030] 1. Mold shaft; 2. Adjustment structure; 21. Adjustment member; 211. Adjustment plate; 212. Handle; 213. Drive unit; 22. Adjustment slot; 23. Stop slot; 24. Stop member; 3. Upper mold body; 31. Cover plate; 32. Hot runner fixing plate; 33. Upper mold cavity fixing plate; 34. Upper mold cavity plate; 4. Lower mold body; 41. Base plate; 42. Ejector pin fixing plate; 43. Lower mold cavity plate. DETAILED DESCRIPTION

[0031] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0032] See also Figure 1-3 As shown, according to the first aspect of the present application, a core replacement mechanism is provided, comprising:

[0033] A mold shaft 1, wherein a mold core is provided on the top of the mold shaft 1;

[0034] The adjusting structure 2 is connected to the mold shaft 1. When the adjusting structure 2 moves radially along the mold shaft 1, the mold shaft 1 will move along its axial direction.

[0035] The core replacement mechanism provided in the embodiments of the present application is applied to an injection mold. The core replacement mechanism includes a mold shaft 1 and an adjustment structure 2. The adjustment structure 2 is connected to the mold shaft 1 and plays an important role in adjusting the position of the mold shaft 1. During the mold core replacement process, when the old mold core on the mold shaft 1 needs to be removed and replaced with a new mold core, the adjustment structure 2 is activated. The adjustment structure 2 drives the mold shaft 1 to move along its axis, thereby ejecting the mold core. Under normal working conditions, the adjustment structure 2 can also fine-tune the position of the mold shaft 1 according to production requirements to ensure the accuracy and stability of the mold core during operation.

[0036] The regulating structure 2 comprises:

[0037] The adjusting member 21 includes at least one adjusting plate 211 arranged obliquely downward. At least one adjusting groove 22 is opened obliquely downward on the outer circumference of the mold shaft 1 , and the adjusting plate 211 is arranged in the adjusting groove 22 .

[0038] In this technical solution, the adjustment member 21 includes at least one adjustment plate 211 angled downward. At least one adjustment slot 22 is defined on the outer circumference of the mold shaft 1, angled downward. The shape and size of the adjustment slot 22 match the adjustment plate 211, allowing the adjustment plate 211 to be accurately positioned within the adjustment slot 22. When the mold shaft 1 needs to be moved axially to replace a mold core or adjust its position, the adjustment member 21 is pushed or pulled by an external drive mechanism. Because the adjustment plate 211 is angled downward within the adjustment slot 22, the interaction between the adjustment plate 211 and the adjustment slot 22 generates a force component along the axial direction of the mold shaft 1 when the adjustment member 21 moves. This force component propels the mold shaft 1 in its axial direction. By precisely controlling the movement distance and direction of the adjustment member 21, precise control of the axial movement of the mold shaft 1 can be achieved, thereby meeting diverse mold core replacement and position adjustment requirements.

[0039] During core replacement, the adjustment plate 211 of the adjustment member 21 cooperates with the adjustment slot 22 of the mold shaft 1 to quickly and accurately move the mold shaft 1 to the appropriate position, facilitating core replacement. Even during normal operation, the position of the mold shaft 1 can be adjusted at any time based on production needs to ensure the accuracy and stability of the core during operation.

[0040] The adjusting member 21 further includes a hand-held portion 212 and a driving portion 213 . The hand-held portion 212 is connected to the driving portion 213 , and the adjusting plate 211 is disposed on the driving portion 213 .

[0041] In this technical solution, the adjustment member 21 includes a handheld portion 212 and a drive portion 213. The drive portion 213 is connected to the handheld portion 212 and is responsible for transmitting power and controlling the movement of the adjustment plate 211. The adjustment plate 211 is arranged on the drive portion 213 and perfectly matches the adjustment slot 22 on the mold shaft 1. The connection between the adjustment plate 211 and the drive portion 213 can be a fixed connection, a detachable connection, or an adjustable connection to meet different usage and maintenance requirements. During the core replacement process, the operator grasps the handheld portion 212 and applies force to the handheld portion 212 to transmit the operating force to the drive portion 213. The transmission mechanism inside the drive portion 213 converts the operating force into the movement of the adjustment plate 211, causing the adjustment plate 211 to move within the adjustment slot 22 of the mold shaft 1, thereby achieving precise control of the axial movement of the mold shaft 1, so that the core replacement operation can be completed quickly and accurately.

[0042] A driving groove for accommodating the mold shaft 1 is defined on a side of the driving portion 213 away from the handheld portion 212 , and the adjustment plate 211 is disposed on a side of the driving groove facing the mold shaft 1 .

[0043] In this technical solution, a driving groove for accommodating the mold shaft 1 is formed on the side of the driving portion 213 away from the handheld portion 212. The driving groove ensures that the mold shaft 1 can be accommodated and provides sufficient space for the movement of the adjustment plate 211.

[0044] The drive slot can be semicircular, rectangular, or other suitable shapes. An adjustment plate 211 is provided on the side of the drive slot facing the mold shaft 1. This arrangement allows the adjustment plate 211 to directly interact with the adjustment slot 22 on the mold shaft 1. Furthermore, two adjustment plates 211 are symmetrically mounted on either side of the drive slot, improving the stability of the movement of the mold shaft 1.

[0045] The drive groove not only provides stable support and guidance for the mold shaft 1, but also ensures more precise and reliable movement of the adjustment plate 211. During mold core replacement, the operator can easily place the mold shaft 1 into the drive groove and then quickly and accurately adjust the position of the mold shaft 1 by manipulating the handle 212, ensuring smooth core replacement. During normal operation, the drive groove also prevents the mold shaft 1 from shaking or shifting during operation, ensuring the accuracy and stability of the mold core.

[0046] A retaining groove 23 is further provided on the outer circumference of the mold shaft 1 . The retaining groove 23 is provided along the axis of the mold shaft 1 . The retaining groove 23 is connected to the adjusting groove 22 .

[0047] In this technical solution, a retaining groove 23 on the outer circumference of the mold shaft 1 further enhances the stability and reliability of the mechanism. The retaining groove 23 extends along the axis of the mold shaft 1 and connects to the adjustment groove 22. This connection ensures that the adjustment plate 211 smoothly transitions from the adjustment groove 22 to the retaining groove 23 during mold core replacement and position adjustment. The provision of the retaining groove 23 prevents the mold shaft 1 from excessively rising.

[0048] The adjustment structure 2 further includes a stopper 24 , which is disposed on one side of the hand-held portion 212 . When the highest point of the adjustment plate 211 moves to the stopper groove 23 , the stopper 24 contacts the hand-held portion 212 .

[0049] In this solution, a stopper 24 is positioned on one side of the handle 212. As the adjustment plate 211 adjusts the position of the mold shaft 1, the highest point of the adjustment plate 211 gradually moves as the operation progresses. When the highest point of the adjustment plate 211 reaches the stop groove 23, the stopper 24 contacts the handle 212 to limit the position, preventing excessive operation that could cause the adjustment member 21 to disengage from the mold shaft 1. This ensures that the adjustment plate 211 remains stably positioned within the stop groove 23, reliably stopping the mold shaft 1.

[0050] A pulling hole is defined on the handle portion 212 , and the stopper 24 is located in the pulling hole.

[0051] In this technical solution, a pulling hole is provided on the hand-held portion 212 , and a stopper 24 is installed in the pulling hole. The adjustment position of the adjusting member 21 is limited by pulling on both sides to prevent the adjusting member 21 from separating from the mold shaft 1 .

[0052] See attached Figure 4 As shown, the second embodiment of the present application proposes an injection mold, including an upper mold body 3 and a lower mold body 4, the upper mold body 3 includes a core replacement mechanism as in any of the above embodiments, and the lower mold body 4 includes a core replacement mechanism as in any of the above embodiments.

[0053] In this technical solution, the injection mold according to the present application includes an upper mold body and a lower mold body. The upper mold body includes a core replacement mechanism as in any of the above embodiments, and the lower mold body includes a core replacement mechanism as in any of the above embodiments. Therefore, it has all the beneficial effects of the core replacement mechanism as in any of the above embodiments, which will not be repeated here.

[0054] The upper mold body 3 also includes:

[0055] Cover plate 31;

[0056] A hot runner fixing plate 32 , the hot runner fixing plate 32 being disposed on the cover plate 31 ;

[0057] an upper mold cavity fixing plate 33 , the upper mold cavity fixing plate 33 being disposed on a side of the hot runner fixing plate 32 away from the cover plate 31 ;

[0058] The upper model cavity plate 34 is arranged on the side of the upper model cavity fixing plate 33 away from the hot runner fixing plate 32. The upper model cavity fixing plate 33 and the upper model cavity plate 34 are both provided with upper mounting holes. The adjusting member 21 is arranged between the upper model cavity fixing plate 33 and the hot runner fixing plate 32. The mold shaft 1 is arranged in the upper mounting hole. The stop member 24 is arranged on the upper model cavity fixing plate 33.

[0059] In this technical solution, the mold shaft 1 located in the upper mounting hole can be moved by pulling the adjusting member 21, thereby pushing the mold core out of the upper mounting hole, making it convenient to replace the mold core.

[0060] The lower mold body 4 also includes:

[0061] Bottom plate 41;

[0062] an ejector fixing plate 42 , the ejector fixing plate 42 being disposed on the bottom plate 41 ;

[0063] The lower mold cavity plate 43 is arranged on the side of the ejector fixing plate 42 away from the bottom plate 41. The lower mold cavity plate 43 is provided with a lower mounting hole. The adjusting member 21 is arranged between the ejector fixing plate 42 and the lower mold cavity plate 43. The mold shaft 1 is arranged in the lower mounting hole. The stop member 24 is arranged on the ejector fixing plate 42.

[0064] In this technical solution, the mold shaft 1 located in the lower mounting hole can be moved by pulling the adjusting member 21, thereby pushing the mold core out of the lower mounting hole, making it convenient to replace the mold core.

[0065] In the description of this utility model, it should be understood that 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 the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0066] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0067] In the present invention, unless otherwise expressly specified or limited, when a first feature is “above” or “below” a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0068] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A mold core replacement mechanism, characterized in that: include: A mold shaft (1), wherein a mold core is provided on the top of the mold shaft (1); An adjusting structure (2) is connected to the mold shaft (1), and when the adjusting structure (2) moves radially along the mold shaft (1), the mold shaft (1) moves along its axial direction.

2. The mold core replacement mechanism according to claim 1, characterized in that: The regulating structure (2) comprises: An adjusting member (21) includes at least one adjusting plate (211) arranged obliquely downward, at least one adjusting groove (22) is provided obliquely downward on the outer circumference of the mold shaft (1), and the adjusting plate (211) is arranged in the adjusting groove (22).

3. The mold core replacement mechanism according to claim 2, characterized in that: The adjusting member (21) further comprises a hand-held portion (212) and a driving portion (213); the hand-held portion (212) is connected to the driving portion (213); and the adjusting plate (211) is arranged on the driving portion (213).

4. The mold core replacement mechanism according to claim 3, characterized in that: A driving groove for accommodating the mold shaft (1) is provided on a side of the driving portion (213) away from the handheld portion (212), and the adjustment plate (211) is arranged on a side of the driving groove facing the mold shaft (1).

5. The mold core replacement mechanism according to claim 4, characterized in that: A retaining groove (23) is also provided on the outer circumference of the mold shaft (1), the retaining groove (23) is provided along the axis direction of the mold shaft (1), and the retaining groove (23) is connected to the adjustment groove (22).

6. The mold core replacement mechanism according to claim 5, characterized in that: The adjustment structure (2) further comprises a stopper (24), which is arranged on one side of the handheld portion (212). When the highest point of the adjustment plate (211) moves to the stopper groove (23), the stopper (24) contacts the handheld portion (212).

7. The mold core replacement mechanism according to claim 6, characterized in that: A pulling hole is provided on the hand-held portion (212), and the stopper (24) is located in the pulling hole.

8. An injection mold, comprising an upper mold body (3) and a lower mold body (4), characterized in that: The upper mold body (3) includes the mold core replacement mechanism according to any one of claims 1 to 7, and the lower mold body (4) includes the mold core replacement mechanism according to any one of claims 1 to 7.

9. The injection mold according to claim 8, wherein: The upper mold body (3) also includes: Cover plate (31); a hot runner fixing plate (32), the hot runner fixing plate (32) being arranged on the cover plate (31); an upper mold cavity fixing plate (33), the upper mold cavity fixing plate (33) being arranged on a side of the hot runner fixing plate (32) away from the cover plate (31); An upper mold cavity plate (34), the upper mold cavity plate (34) is arranged on a side of the upper mold cavity fixing plate (33) away from the hot runner fixing plate (32), the upper mold cavity fixing plate (33) and the upper mold cavity plate (34) are both provided with upper mounting holes, the adjusting member (21) is arranged between the upper mold cavity fixing plate (33) and the hot runner fixing plate (32), the mold shaft (1) is arranged in the upper mounting hole, and the stop member (24) is arranged on the upper mold cavity fixing plate (33).

10. The injection mold according to claim 8, wherein The lower mold body (4) also includes: Bottom plate (41); an ejector pin fixing plate (42), the ejector pin fixing plate (42) being arranged on the bottom plate (41); A lower mold cavity plate (43) is provided on a side of the ejector fixing plate (42) away from the bottom plate (41), a lower mounting hole is provided on the lower mold cavity plate (43), the adjusting member (21) is provided between the ejector fixing plate (42) and the lower mold cavity plate (43), the mold shaft (1) is provided in the lower mounting hole, and the stop member (24) is provided on the ejector fixing plate (42).

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