Ceramic injection molding mold

Abstract

The utility model relates to the field of injection molds, and discloses a ceramic injection molding mold which comprises an ejector plate, the demolding ejector pin penetrates through the ejector pin plate; the assembling seat is mounted on the ejector pin plate, and the demolding ejector pin is detachably mounted on the assembling seat; and the number of the limiting heads is multiple, the multiple limiting heads are installed on the assembling base, and the multiple limiting heads are arranged in the mode that when the assembling base moves upwards, the multiple limiting heads are far away from one another and are separated from the demolding ejector pin. According to the utility model, the detachable demolding ejector pin and the limiting head are arranged on the assembly seat, so that the ejector pin is more smooth in replacement process and is not easy to damage a mold, the stable transition of the ejector pin during fixing and releasing is ensured, and the collision and damage possibly generated when the ejector pin is directly pulled out by using a tool are avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to a ceramic injection molding mold. Background Technology

[0002] Ceramic injection molds are tools used to inject molten ceramic colloid into a mold cavity, which then solidifies upon cooling to obtain a ceramic preform. They are widely used in zirconia ceramic ferrules and sleeves for fiber optic connectors, and in biomedical ceramic components, among other applications.

[0003] Ceramic injection molds are typically equipped with ejector pins to eject the molded part from the mold cavity after injection molding. With extended production cycles and frequent mold use, these ejector pins may need replacement due to wear or damage. Currently, the most common method for replacing ejector pins in ceramic injection molds is the direct pull-out method. While this method is simple, the complex internal structure of the mold and the high precision requirements mean that the tool is highly susceptible to collisions or friction with other parts of the mold during the direct pull-out process.

[0004] When replacing ejector pins in existing ceramic injection molding molds, tools are used to directly pull the old ejector pins out of the mold. During this process, the tools are prone to collisions with the mold, which can easily damage the mold and make it difficult to replace ejector pins in ceramic injection molding molds without damage. Utility Model Content

[0005] To solve the problems mentioned above, this utility model is implemented through the following technical solution.

[0006] A ceramic injection mold includes: an ejector plate; a demolding ejector pin disposed through the ejector plate; an assembly base mounted on the ejector plate, wherein the demolding ejector pin is detachably mounted on the assembly base; and a plurality of limiting heads mounted on the assembly base, wherein the limiting heads are configured to move away from each other and disengage from the demolding ejector pin when the assembly base moves upward.

[0007] Preferably, the ejector plate includes: a control groove formed at the bottom of the ejector plate, an assembly seat disposed in the control groove, the assembly seat being configured to move within the control groove, and the bottom end of the demolding ejector pin extending into the control groove.

[0008] Preferably, the ejector plate further includes a limiting seat, which is installed on the inner wall of the control groove, one end of the limiting head is an inclined surface, and the limiting seat is in contact with the inclined surface of the limiting head.

[0009] Preferably, the ejector plate further includes an elastic element, one end of which is mounted on the inner wall of the control groove, and the other end of which is mounted on the limiting seat.

[0010] Preferably, the assembly base includes: a connecting groove, which is formed on the top of the assembly base, and the demolding ejector pin is installed in the connecting groove; a plurality of through holes are formed on the inner wall of the connecting groove, and the limiting head is installed in each through hole.

[0011] Preferably, it further includes: a lower fixing plate installed at the bottom of the ejector plate; an upper template disposed above the ejector plate; and an upper fixing plate installed at the top of the upper template.

[0012] Preferably, the lower fixing plate includes an adjusting bolt, and the bottom of the lower fixing plate has a threaded hole, the adjusting bolt is connected in the threaded hole, and one end of the adjusting bolt contacts the assembly base.

[0013] Preferably, the lower fixing plate further includes: a partition plate installed on top of the lower fixing plate; a lower template installed on top of the partition plate, and an upper template installed on top of the lower template.

[0014] This invention provides a ceramic injection molding die. Compared with the prior art, it has the following advantages: By setting detachable ejector pins and limiting heads on the assembly base, the ejector pin replacement process is smoother and less likely to damage the mold, ensuring a smooth transition when the ejector pin is fixed and released, and avoiding the bumps and damage that may occur when directly pulling out the ejector pin with tools. The up-and-down movement of the assembly base is controlled by adjusting bolts, enabling convenient ejector pin replacement and simplifying the replacement process. Because the mold is not easily damaged during ejector pin replacement, it can maintain high molding accuracy and stability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the upper fixing plate, upper template, lower fixing plate, and ejector plate proposed in this utility model.

[0017] Figure 3 This is an enlarged cross-sectional view of the lower fixing plate, ejector plate, and assembly seat proposed in this utility model.

[0018] Figure 4 This is a cross-sectional view of the assembly base proposed in this utility model.

[0019] The attached figures are labeled as follows:

[0020] 100. Mount the fixing plate;

[0021] 200. Upload the template;

[0022] 300. Lower fixing plate; 301. Partition plate; 302. Lower template; 303. Adjusting bolt;

[0023] 400. Ejector plate; 401. Assembly base; 402. Limiting seat; 403. Limiting head; 404. Elastic element; 405. Control groove; 406. Connecting groove;

[0024] 500. Demolding ejector pin. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] Reference Figures 1-4 A ceramic injection molding die includes: an ejector plate 400; a demolding ejector pin 500, which passes through the ejector plate 400; an assembly base 401, which is mounted on the ejector plate 400, and the demolding ejector pin 500 is detachably mounted on the assembly base 401; and several limiting heads 403, which are mounted on the assembly base 401 and are configured to move away from each other and disengage from the demolding ejector pin 500 when the assembly base 401 moves upward.

[0028] In this embodiment, the assembly base 401 can provide an installation environment for the demolding ejector pin 500. When the assembly base 401 is pushed upward, it can not only push the demolding ejector pin 500 out of the surface of the lower template 302, but also control several limit heads 403 to disengage from the demolding ejector pin 500. Then the demolding ejector pin 500 can be pulled out from the assembly base 401 for replacement.

[0029] Reference Figure 3 and Figure 4 The ejector plate 400 includes: a control groove 405, formed at the bottom of the ejector plate 400; an assembly seat 401 disposed within the control groove 405 and configured to move within the control groove 405; the bottom end of the demolding ejector pin 500 extending into the control groove 405; a limiting seat 402, mounted on the inner wall of the control groove 405; one end of the limiting head 403 being an inclined surface; and the limiting seat 402 fitting against the inclined surface of the limiting head 403; and an elastic element 404, one end of which is mounted on the inner wall of the control groove 405, and the other end of which is mounted on the limiting seat 402.

[0030] The aforementioned elastic element 404 can provide support for the assembly base 401, ensuring that the assembly base 401 is always in contact with the limiting seat 402. At the same time, the limiting head 403 is pressed and fixed by the limiting seat 402 to the demolding ejector pin 500. When the assembly base 401 is controlled by external force and moves upward, the assembly base 401 will disengage from the limiting seat 402, and the limiting head 403 will also disengage from the limiting seat 402, thereby canceling the fixation restriction. The elastic element 404 can be a spring or a spring block.

[0031] Reference Figure 3 and Figure 4 The assembly base 401 includes: a connecting groove 406, which is opened on the top of the assembly base 401, and the demolding ejector pin 500 is installed in the connecting groove 406; a plurality of through holes are opened on the inner wall of the connecting groove 406, and the limiting head 403 is installed in each through hole.

[0032] Reference Figure 1 and Figure 2 The system comprises: a lower fixing plate 300, installed at the bottom of the ejector plate 400; an upper template 200, positioned above the ejector plate 400; and an upper fixing plate 100, installed at the top of the upper template 200. The lower fixing plate 300 includes: an adjusting bolt 303, with a threaded hole at its bottom, the adjusting bolt 303 being connected to the threaded hole, and one end of the adjusting bolt 303 contacting the assembly base 401; a spacer plate 301, installed at the top of the lower fixing plate 300; a lower template 302, installed at the top of the spacer plate 301; and the upper template 200, installed at the top of the lower template 302.

[0033] The aforementioned adjusting bolt 303 can rotate up and down when it rotates in the threaded hole. By rotating the adjusting bolt 303, the assembly base 401 can be lifted upward.

[0034] During use, the injection molding material is injected into the mold cavity and cured by heating and pressurization. When demolding is required after injection molding, the adjusting bolt 303 on the lower fixing plate 300 is rotated, causing it to move upwards within the threaded hole. The upward movement of the adjusting bolt 303 pushes the assembly seat 401 upwards within the control groove 405. The limiting head 403 disengages from the ejector pin 500: As the assembly seat 401 moves upwards, it gradually disengages from the limiting seat 402. Because one end of the limiting head 403 is designed with a slope, when the assembly seat 401 disengages from the limiting seat 402, the limiting head 403 is reduced in pressure from the limiting seat 402, thus moving away from it and disengaging from the ejector pin 500. At this point, the ejector pin 500 loses the fixing restriction of the limiting head 403 and is in a detachable state. It continues to push the assembly base 401 upward until the top of the ejector pin 500 pushes out of the surface of the lower template 302, thus ejecting the molded ceramic product from the mold.

[0035] After demolding is complete, if it is necessary to replace or maintain the ejector pin 500, the ejector pin 500 can be easily pulled out from the connecting groove 406 of the assembly base 401. After replacing or maintaining the ejector pin 500, the new or maintained ejector pin 500 can be reinstalled back into the connecting groove 406 of the assembly base 401. By rotating the adjusting bolt 303, the assembly base 401 is moved downward under the elastic action of the elastic element 404, thus resetting the assembly base 401 to its initial state.

[0036] In summary, compared with existing technologies, it has the following beneficial effects:

[0037] By setting a detachable ejector pin 500 and a limiting head 403 on the assembly base 401, the replacement process of the ejector pin 500 is made smoother and less likely to damage the mold. This ensures a smooth transition when the ejector pin 500 is fixed and released, and avoids the bumps and damage that may occur when the ejector pin 500 is pulled out directly with a tool.

[0038] By adjusting the bolt 303 to control the up and down movement of the assembly base 401, the demolding ejector pin 500 can be easily replaced, simplifying the replacement process. Since the mold is not easily damaged during the replacement of the demolding ejector pin 500, it can maintain high molding accuracy and stability.

[0039] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A ceramic injection molding die, characterized by, The utility model relates to a kind of ejection pin assembly, including: Ejection pin plate (400); Demoulding ejector pin (500), it is set through the ejection pin plate (400); Assembly seat (401) is installed on the ejection pin plate (400), and the demoulding ejector pin (500) is detachably mounted on assembly seat (401); Limiting head (403), several are installed on assembly seat (401), and several limiting head (403) are set as when assembly seat (401) moves upward, several limiting head (403) are away from each other and with demoulding ejector pin (500) disengaged.

2. The ceramic injection molding die of claim 1, wherein, The ejection pin plate (400) includes: Control groove (405) is opened in the bottom of the ejection pin plate (400), and the assembly seat (401) is arranged in control groove (405), and the assembly seat (401) is arranged to move in control groove (405), and the bottom end of the demoulding ejector pin (500) extends into control groove (405).

3. A ceramic injection molding die according to claim 2, wherein The ejection pin plate (400) further includes: Limiting seat (402) is installed on the inner wall of the control groove (405), and one end of the limiting head (403) is inclined surface, and the limiting seat (402) is attached to the inclined surface of limiting head (403).

4. The ceramic injection molding die of claim 2, wherein, The ejection pin plate (400) further includes: Elastic member (404), one end of the elastic member (404) is installed on the inner wall of control groove (405), and the other end of the elastic member (404) is installed on limiting seat (402).

5. The ceramic injection molding die of claim 1, wherein, The assembly seat (401) includes: Connecting groove (406) is opened in the top of the assembly seat (401), and the demoulding ejector pin (500) is mounted in connecting groove (406); Several through holes are opened in the inner wall of the connecting groove (406), and the limiting head (403) is installed in each through hole.

6. The ceramic injection molding die of claim 1, wherein, Further including: Lower fixed plate (300) is installed in the bottom of the ejection pin plate (400); Upper mold plate (200) is arranged above the ejection pin plate (400); Upper fixed plate (100) is installed in the top of the upper mold plate (200).

7. A ceramic injection molding die according to claim 6, wherein The lower fixed plate (300) includes: Adjusting bolt (303), the bottom of the lower fixed plate (300) is provided with threaded hole, and the adjusting bolt (303) is connected in threaded hole, and one end of the adjusting bolt (303) is in contact with assembly seat (401).

8. A ceramic injection molding die according to claim 7, wherein The lower fixed plate (300) further includes: Spacing plate (301) is installed in the top of the lower fixed plate (300); Lower mold plate (302) is installed in the top of the spacing plate (301), and the upper mold plate (200) is installed in the top of lower mold plate (302).

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