Die

Abstract

The utility model discloses a die. The mold comprises a first mold plate, a second mold plate and an ejection mechanism, and the ejection mechanism further comprises an ejection rod, a return rod and a movable part. The second template is provided with an accommodating cavity. When the ejection mechanism is located at the ejection position, the second surface abuts against the first surface to limit the ejection mechanism to continuously slide in the first direction, the first surface, the second surface and the inner peripheral wall of the containing cavity jointly define a buffer space, and the buffer space is communicated with the external environment. The first surface and the second surface are not completely attached, a buffer space communicated with the external environment is formed between the first surface and the second surface, air can enter the buffer space, the attaching degree of the ejection mechanism and the mold is reduced, meanwhile, a return rod is arranged, when the first mold plate and the second mold plate of the mold are closed, the first mold plate abuts against the return rod, and the first mold plate and the second mold plate abut against the return rod. Therefore, the ejection mechanism is abutted and reset, the reset of the ejection mechanism is completed by closing the mold, and the process of withdrawing and resetting becomes simple.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold. Background Art

[0002] In the field of mold forming technology, it is necessary to inject raw materials into the mold, then maintain pressure, cool, open the mold to remove the part, and polish the finished product, among other detailed processes. During the mold opening and part removal process, it is often necessary to design a lifting mechanism within the mold to eject the molded workpiece, which is then retracted to await the next demolding operation. In existing technologies, after lifting, the ejection mechanism and the mold fit tightly together, requiring air to be blown at the joint between the ejection mechanism and the mold to retract and reset the ejection mechanism using air pressure, which is inconvenient. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a mold that can simplify the retraction and reset process of the ejection mechanism.

[0004] According to an embodiment of the present invention, the mold includes a first template, a second template and an ejection mechanism. The second template is used to close the mold with the first template to define a cavity for forming a workpiece, and the second template is also provided with a accommodating cavity. The ejection mechanism is slidably arranged in the accommodating cavity, and the ejection mechanism can slide along the first direction to be in the ejection position. The ejection mechanism has a first surface, and the accommodating cavity has a second surface. The first surface and the second surface are distributed toward each other along the first direction. When the ejection mechanism is in the ejection position, the second surface abuts the first surface to limit the ejection mechanism from continuing to slide along the first direction. The first surface, the second surface and the inner peripheral wall of the accommodating cavity jointly define a buffer space, and the buffer space is connected to the external environment. The ejection mechanism includes a ejector rod and a movable part. The ejector rod is fixedly mounted on the movable part. The ejector rod includes an ejection rod and a return rod. The ejector rod is used to eject the workpiece after the mold is opened, and the return rod is used to abut against the first template when the mold is closed.

[0005] The mold according to the embodiment of the present invention has at least the following beneficial effects: when the ejection mechanism in the prior art is in the ejection position, the first surface and the second surface abut and fit together. After the two are fitted together, there is less gas between the two and the air pressure is also relatively small. When the ejection mechanism is reset, it is necessary to overcome the pressure difference between the atmospheric pressure and the above-mentioned air pressure, so reset is difficult. However, the first surface and the second surface of the embodiment of the present invention are not completely fitted together, and a buffer space connected to the external environment is formed between the two. Air can enter the buffer space, reducing the degree of fit between the ejection mechanism and the mold and reducing the pressure difference that needs to be overcome during reset. At the same time, a return rod is provided, so that when the first template and the second template of the mold are closed, the first template abuts the return rod, thereby abutting the ejection mechanism to reset it. Closing the mold completes the reset of the ejection mechanism, making the retraction and reset process simple.

[0006] According to some embodiments of the present invention, the movable part includes a main body and a protruding part, the protruding part protrudes relative to the main body, the first surface includes a first area and a second area, the first area and the second area are spaced apart along the first direction, the first area is located in the main body, and the second area is located in the protruding part, and when the ejection mechanism is in the ejection position, the second area abuts against the second surface.

[0007] According to some embodiments of the present invention, the first surface also includes a transition area, the first area and the second area are connected by the transition area, the transition area is inclined toward the second area relative to the first area, and when viewed along the first direction, the first area and the transition area are annular, and the transition area surrounds the periphery of the second area.

[0008] According to some embodiments of the present invention, the ejection mechanism can slide along the second direction to be in the retracted position, the first direction is opposite to the second direction, and the inner peripheral wall of the accommodating cavity is provided with a first air outlet. When the ejection mechanism is in the ejection position, the first air outlet connects the buffer space with the external environment, and the first air outlet can blow air to make the ejection mechanism slide to the retracted position.

[0009] According to some embodiments of the present invention, the accommodating cavity further has a third surface, and the third surface and the second surface are spaced apart along the first direction. When the ejection mechanism is in the retracted position, the ejection mechanism abuts against the third surface to limit the ejection mechanism from continuing to slide along the first direction. The third surface is provided with a second air outlet, and the second air outlet is connected to the external environment. The second air outlet can blow air to make the ejection mechanism slide to the ejection position.

[0010] According to some embodiments of the present invention, a plurality of the accommodating cavities are provided in the second template, and the ejection mechanisms are provided in multiple, each of the accommodating cavities is provided with the ejection mechanisms, a first air inlet is provided on the outer surface of the second template, a first branch channel is provided in the second template, the first branch channel is connected to the first air inlet, each of the first air outlets is connected to the first branch channel, and the first air inlet is used for filling with gas.

[0011] According to some embodiments of the present invention, a plurality of the accommodating cavities are provided in the second template, and the ejection mechanisms are provided in multiple, each of the accommodating cavities is provided with the ejection mechanisms, a second air inlet is provided on the outer surface of the second template, a second branch channel is provided in the second template, the second branch channel is connected to the second air inlet, each of the second air outlets is connected to the second branch channel, and the second air inlet is used for filling with gas.

[0012] According to some embodiments of the present invention, the mold further includes an air supply mechanism, which connects the first air inlet and the second air inlet, and is used to blow air into the first air inlet and the second air inlet.

[0013] According to some embodiments of the present invention, a distance between the first area and the second area along the first direction is L, and 1.5 mm ≤ L ≤ 3 mm.

[0014] According to some embodiments of the present invention, the ejection mechanism further includes an abutment surface, which is arranged around the first surface and extends along the first direction. The ejection mechanism is provided with a sealing ring, which is arranged on the abutment surface. The sealing ring abuts against the inner circumferential wall of the accommodating cavity to isolate the buffer space.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 A three-dimensional diagram of the second template of the mold in an embodiment of the present invention;

[0018] Figure 2 This is a first exploded view of the second template of the mold in an embodiment of the present utility model;

[0019] Figure 3 This is a second exploded view of the second template of the mold in the embodiment of the present utility model;

[0020] Figure 4 A partial cross-sectional view of the ejection mechanism in an embodiment of the present utility model in a retracted position;

[0021] Figure 5 A partial cross-sectional view of the ejection mechanism in an embodiment of the present utility model in the ejection position;

[0022] Figure 6 It is a first top view of the ejection mechanism in an embodiment of the present utility model;

[0023] Figure 7 This is a front view of the second template of the mold in an embodiment of the present utility model;

[0024] Figure 8 for Figure 7 Sectional view of section AA;

[0025] Figure 9 for Figure 7 Cross-sectional view of the middle BB section;

[0026] Figure 10 2 is a top view of the ejection mechanism in the second embodiment of the present invention;

[0027] Figure 11 for Figure 4 Enlarged view of area C in the middle;

[0028] Figure 12 A top view of the second template of the mold in an embodiment of the present utility model;

[0029] Figure 13 It is a three-dimensional diagram of the workpiece after forming in an embodiment of the present utility model.

[0030] Figure markings: mold 101, second template 102, ejection mechanism 103, first air inlet 104, second air inlet 105, first component 106, second component 107, second air outlet 201, fixing part 202, accommodating cavity 301, ejector rod 401, movable part 402, main body 403, protrusion 404, first surface 405, second surface 406, third surface 407, abutment surface 408, sealing ring 409, second diversion channel 410, ejector rod 411, return rod 412, first area 601, transition area 602, second area 603, first diversion channel 901, first air outlet 902, workpiece 13. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] refer to Figures 1 to 5 as well as Figure 12 and Figure 13According to an embodiment of the present invention, the mold 101 includes a first template, a second template 102 and an ejection mechanism 103. The second template 102 is used to mate with the first template to define a cavity for forming a workpiece 13. The second template 102 is also provided with a receiving cavity 301. The ejection mechanism 103 is slidably disposed in the receiving cavity 301. The ejection mechanism 103 can slide along a first direction to be in an ejection position. The ejection mechanism 103 has a first surface 405. The receiving cavity 301 has a second surface 406. The first surface 405 and the second surface 406 are distributed facing each other along the first direction. When the ejection mechanism 103 is in the ejection position, the second surface 406 abuts against the first surface 405 to limit the ejection mechanism 103 from continuing to slide along the first direction. The first surface 405, the second surface 406 and the inner peripheral wall of the receiving cavity 301 jointly define a buffer space, and the buffer space is connected to the external environment. The ejection mechanism 103 includes an ejector rod 401 and a movable part 402. The ejector rod 401 is fixedly mounted on the movable part 402. The ejector rod 401 includes an ejection rod 411 and a return rod 412. The ejection rod 411 is used to eject the workpiece 13 after the mold is opened, and the return rod 412 is used to abut against the first template when the mold is closed. When the ejection mechanism 103 in the prior art is in the ejection position, the first surface 405 and the second surface 406 are in contact and fit together. After the two are in contact, there is less gas between them and the air pressure is also relatively small. When the ejection mechanism 103 is reset, it needs to overcome the pressure difference between the atmospheric pressure and the above-mentioned air pressure, so it is difficult to reset. However, the first surface 405 and the second surface 406 of the embodiment of the utility model are not completely in contact with each other. A buffer space connected to the external environment is formed between them, and air can enter the buffer space, which reduces the degree of contact between the ejection mechanism 103 and the mold 101 and reduces the pressure difference that needs to be overcome when resetting. At the same time, a return rod 412 is provided, so that when the first template of the mold 101 and the second template 102 are closed, the first template abuts the return rod 412, thereby abutting the ejection mechanism 103 to reset it. Closing the mold completes the reset of the ejection mechanism 103, making the retraction and reset process simple. Specifically, refer to Figure 12 and Figure 13 , Figure 13 The workpiece 13 is formed in some embodiments of the present invention, and the ejector rod 411 is Figure 12 It can be seen that the bottom portion is located at the outer edge of the workpiece 13, and the return rod 412 is located outside the workpiece 13 and does not participate in the ejection of the workpiece 13. When the workpiece 13 is formed, the first and second templates 102 are opened, and the ejection mechanism 103 ejects the workpiece 13. The return rod 412 extends relative to the upper surface of the second template 102. At this time, the first template needs to be covered on the second template 102 again to close the mold for the next workpiece 13. The first template will abut against the return rod 412 to retract it, thus completing the process of closing the mold and completing the reset of the ejection mechanism 103. In some embodiments of the present invention, not only limited to Figure 13The shape of the workpiece 13 shown is such that the ejector rod 411 is disposed in the cavity where the workpiece 13 is to be formed, and the return rod 412 is disposed at a position where it can abut against the first template when the mold is closed.

[0037] It should be noted that the reference Figure 1 In some embodiments of the present invention, the second template 102 refers to the lower half of the entire molding device, and the ejection mechanism 103 is used to eject the workpiece 13 from bottom to top, while the upper half of the first template is not shown in the figure. If the upper half is also provided with the ejection mechanism 103 of the embodiment of the present invention, the ejection direction is opposite and the same technical effect can be achieved, which is not shown here.

[0038] It should be noted that the reference Figures 3 to 5 In some embodiments of the present invention, the ejection mechanism 103 is directly disposed in the accommodating cavity 301. Compared with the prior art in which the ejection mechanism is disposed in a separate cylinder, this facilitates the processing and manufacturing of the mold 101 and reduces processing costs.

[0039] It should be noted that the reference Figure 2 and Figure 5 In some embodiments of the present invention, the mold 101 further includes a fixing part 202, which is detachably mounted in the accommodating cavity 301. The fixing part 202 and the movable part 402 are arranged opposite to each other. Since the first surface 405 of the lifting mechanism will abut against the second surface 406 when it is in the ejection position, arranging the second surface 406 on the detachably mounted fixing part 202 can facilitate replacement of the second surface 406 when it is worn out over time.

[0040] refer to Figures 4 to 6 as well as Figure 11 In some embodiments of the present invention, the movable member 402 includes a main body 403 and a protruding portion 404. The protruding portion 404 protrudes relative to the main body 403. The first surface 405 includes a first area 601 and a second area 603. The first area 601 and the second area 603 are spaced apart along the first direction. The first area 601 is located in the main body 403, and the second area 603 is located in the protruding portion 404. When the ejection mechanism 103 is in the ejection position, the second area 603 abuts against the second surface 406. The ejector 401 is used to eject the workpiece 13. Therefore, the top of the ejector 401 is as shown in FIG. Figure 1 As shown in the ejection position, it extends out of the outer surface of the second template 102. The protrusion 404 can be provided so that when the ejection mechanism 103 is in the ejection position, the top of the protrusion 404, that is, the second area 603, abuts against the second surface 406, and the first area 601 is spaced apart from the second surface 406 to form a buffer space (such as Figure 5As shown), this can better avoid the phenomenon that the movable member 402 is completely in contact with the second surface 406 of the accommodating cavity 301 and forms a low pressure when being ejected.

[0041] refer to Figures 4 to 6 as well as Figure 11 In some embodiments of the present invention, the first surface 405 further includes a transition region 602, connecting the first region 601 and the second region 603. The transition region 602 is inclined relative to the first region 601 toward the second region 603. When viewed along a first direction, the first region 601 and the transition region 602 form a ring, with the transition region 602 surrounding the periphery of the second region 603. This design allows the protrusion 404 to be located in the center of the first surface 405, facilitating air flow into the buffer space from all angles and better preventing low pressure. The ring-shaped design facilitates smoother air flow, while the conical transition region 602 allows air to be more effectively blown onto the first and second surfaces 405, 406, generating a thrust on the movable member 402, causing the ejection mechanism 103 to slide to a retracted state.

[0042] It should be noted that the reference Figure 10 In some embodiments of the present invention, the protrusions 404 can be symmetrically arranged on both sides of the ejector rod 401, with the ejection rod 411 and the return rod 412 positioned at the upper and lower ends of the first surface 405, respectively, to achieve the same technical effect. The specific arrangement can be adjusted based on production requirements and the desired positions of the ejection rod 411 and the return rod 412. In some embodiments of the present invention, a groove communicating with the outside can be provided on the main body 403 instead of the protrusions 404. This can also create a buffer space between the ejection mechanism 103 and the end surface of the accommodating cavity 301 when the ejection mechanism 103 is in the ejection position, thereby preventing low pressure.

[0043] refer to Figure 4 、 Figure 5 、 Figure 7 and Figure 9 In some embodiments of the present invention, the ejection mechanism 103 can slide along a second direction to reach a retracted position. The first direction is opposite to the second direction. A first air outlet 902 is provided on the inner peripheral wall of the accommodating chamber 301. When the ejection mechanism 103 is in the ejection position, the first air outlet 902 connects the buffer space with the external environment. The first air outlet 902 can blow air to slide the ejection mechanism 103 to the retracted position. The provision of the first air outlet 902 can actively blow air into the buffer space, making the process of the ejection mechanism 103 sliding to the retracted position controllable. The provision of the first air outlet 902 on the inner peripheral wall of the accommodating chamber 301 can also ensure that the blown gas is more evenly distributed throughout the buffer space, making the thrust of the gas on the movable member 402 more uniform.

[0044] refer to Figure 2 、 Figure 4 and Figure 5 In some embodiments of the present invention, the accommodating cavity 301 further comprises a third surface 407 spaced apart from the second surface 406 along the first direction. When the ejection mechanism 103 is in the retracted position, the ejection mechanism 103 abuts against the third surface 407 to restrict further sliding in the first direction. The third surface 407 defines a second air outlet 201, which communicates with the external environment and allows air to be blown through the second air outlet 201 to cause the ejection mechanism 103 to slide to the ejection position. The third surface 407 acts as a position limiter for the ejection mechanism 103, ensuring that the ejection mechanism 103 remains accurately positioned in the retracted position. The second air outlet 201 is also provided to actively blow air into the ejection mechanism 103, thereby generating a thrust in the first direction, causing the ejection mechanism 103 to slide from the retracted position to the ejection position, making this process controllable. The third surface 407 is provided to ensure that the air thrust is directed entirely in the first direction, thereby effectively pushing the ejection mechanism 103 out.

[0045] refer to Figure 3 、 Figure 7 and Figure 9 In some embodiments of the present invention, a plurality of accommodating cavities 301 are provided in the second template 102, and a plurality of ejection mechanisms 103 are provided. Each ejection mechanism 103 is placed in the accommodating cavity 301. A first air inlet 104 is provided on the outer surface of the second template 102. A first branch channel 901 is provided in the second template 102. The first branch channel 901 is connected to the first air inlet 104. Each first air outlet 902 is connected to the first branch channel 901. The first air inlet 104 is used to fill with gas. Providing multiple accommodating cavities 301 can meet more diverse production needs, so that the workpiece 13 can be ejected with a more uniform thrust. The first branch channel 901 and the first air inlet 104 are provided to more conveniently control the retraction of multiple ejection mechanisms 103 at the same time. After the first air inlet 104 is inflated, the gas flows to each first air outlet 902 through the first branch channel 901, thereby generating a thrust on the first surface 405, causing the ejection mechanism 103 to slide to the retracted position, thereby improving the control rate and synchronization rate.

[0046] refer to Figure 4 、 Figure 5 、 Figure 7 and Figure 8In some embodiments of the present invention, the second template 102 is provided with a plurality of accommodating cavities 301, and the ejection mechanism 103 has a plurality of accommodating cavities 301, each of which has an ejection mechanism 103 placed therein. A second air inlet 105 is provided on the outer surface of the second template 102, and a second branch channel 410 is provided therein. The second branch channel 410 is connected to the second air inlet 105, and each second air outlet 201 is connected to the second branch channel 410. The second air inlet 105 is used for charging gas. The provision of the second branch channel 410 and the second air inlet 105 can more conveniently control the ejection of multiple ejection mechanisms 103 simultaneously. After the second air inlet 105 is inflated, the gas flows through the second branch channel 410 to each second air outlet 201, thereby generating a thrust on the bottom end of the ejection mechanism 103, causing the ejection mechanism 103 to be ejected to the ejection position, thereby improving the control rate and synchronization rate.

[0047] In some embodiments of the present invention, the mold 101 further includes an air supply mechanism, which connects the first air inlet 104 and the second air inlet 105, and is used to blow air into the first air inlet 104 and the second air inlet 105. By providing the air supply mechanism, it is possible to better control the inflation of the first air inlet 104 and the second air inlet 105. When it is necessary to eject the workpiece 13, the air supply mechanism is controlled to inflate the second air inlet 105 so that all the ejection mechanisms 103 are ejected. When the workpiece 13 is ejected and the ejection mechanisms 103 need to be retracted, the air supply mechanism is controlled to inflate the first air inlet 104 so that all the ejection mechanisms 103 are retracted, making the operation more convenient. It should be noted that the first air inlet 104 and the second air inlet 105 are connected to the air supply mechanism, which does not conflict with the connection between the buffer space and the external environment as described above. It is a special case. The connection with the external environment is essentially the connection with the external air, and the air supply mechanism provides the external air.

[0048] It should be noted that the reference Figure 8 and Figure 9 In some embodiments of the present invention, the first branch channel 901 and the second branch channel 410 are arranged in a straight line, so that the gas can quickly reach the first gas outlet 902 and the second gas outlet 201. At the same time, multiple gas inlets are provided, and different gas inlets can be inflated according to different usage requirements so that the ejection and retraction order of the ejection mechanism 103 can meet the target requirements. For example, when the ejection mechanism 103 on the left is required to be ejected or retracted first, the gas inlet on the left can be inflated. In some embodiments of the present invention, the accommodating cavity 301 can be set to different positions and quantities according to production requirements, such as Figure 9 The figure shows a symmetrical arrangement of four, but an asymmetrical design or a larger number of arrangements can also be made.

[0049] It should be noted that the reference Figure 1In some embodiments of the present invention, the second template 102 includes a first component 106 and a second component 107, which can facilitate the installation and disassembly of the ejection mechanism 103, and the first air inlet 104 and the second air inlet 105 are respectively arranged on the first component 106 and the second component 107, which can also make the gas flow channels of the two independent of each other to avoid cross flow.

[0050] refer to Figure 5 In some embodiments of the present invention, the distance L between the first region 601 and the second region 603 along the first direction is 1.5 mm ≤ L ≤ 3 mm. Specifically, L can be 1.5 mm, 2 mm, 3 mm, etc. Within this distance, gas can enter the buffer space well and avoid airtightness problems caused by excessive gaps. When L is less than 1.5 mm, the gap between the first region 601 and the second surface 406 is too small, the amount of gas that can be accommodated is small, and the gas cannot effectively push the ejection mechanism 103. When L is greater than 3 mm, the gap between the first region 601 and the second surface 406 is too large, which may cause airtightness problems and also require the volume of the accommodating cavity 301 to be set larger, which does not meet the miniaturization requirements.

[0051] refer to Figure 4 and Figure 5 In some embodiments of the present invention, the ejection mechanism 103 further includes an abutment surface 408, which is disposed around the first surface 405 and extends along the first direction. The ejection mechanism 103 is provided with a sealing ring 409, which is disposed on the abutment surface 408 and abuts against the inner circumferential wall of the accommodating chamber 301 to isolate the buffer space. The sealing ring 409 can prevent air from flowing between the first surface 405 and the third surface 407. This prevents some gas from flowing through the gap between the abutment surface 408 and the inner circumferential wall of the accommodating chamber 301 to one end of the third surface 407 when the first air outlet 902 blows air, and prevents some gas from flowing through the gap between the abutment surface 408 and the inner circumferential wall of the accommodating chamber 301 to the buffer space when the second air outlet 201 blows air, thereby affecting the ejection and retraction effects.

[0052] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A mold, characterized in that: include: First template; a second template, the second template being used for closing the mold with the first template to define a cavity for molding a workpiece, the second template further being provided with an accommodating cavity; an ejection mechanism slidably disposed within the accommodating cavity, the ejection mechanism being slidable along a first direction to be in an ejection position, the ejection mechanism having a first surface, the accommodating cavity having a second surface, the first surface and the second surface being disposed facing each other along the first direction; When the ejection mechanism is in the ejection position, the second surface abuts against the first surface to limit the ejection mechanism from continuing to slide along the first direction, and the first surface, the second surface, and the inner peripheral wall of the accommodating cavity jointly define a buffer space, and the buffer space is in communication with the external environment; The ejection mechanism includes an ejector rod and a movable part. The ejector rod is fixedly installed on the movable part. The ejector rod includes an ejection rod and a return rod. The ejection rod is used to eject the workpiece after the mold is opened, and the return rod is used to abut against the first template when the mold is closed.

2. The mold according to claim 1, characterized in that The movable part includes a main body and a protruding part, the protruding part protrudes relative to the main body, the first surface includes a first area and a second area, the first area and the second area are spaced apart along the first direction, the first area is located in the main body, and the second area is located in the protruding part. When the ejection mechanism is in the ejection position, the second area abuts against the second surface.

3. The mold according to claim 2, characterized in that The first surface also includes a transition area, through which the first area and the second area are connected. The transition area is inclined toward the second area relative to the first area. When viewed along the first direction, the first area and the transition area are annular, and the transition area surrounds the periphery of the second area.

4. The mold according to claim 1, characterized in that The ejection mechanism can slide along a second direction to be in a retracted position, the first direction being opposite to the second direction. A first air outlet is provided on the inner peripheral wall of the accommodating cavity. When the ejection mechanism is in the ejection position, the first air outlet connects the buffer space with the external environment. The first air outlet can blow air to make the ejection mechanism slide to the retracted position.

5. The mold according to claim 4, characterized in that The accommodating cavity further has a third surface, and the third surface and the second surface are spaced apart along the first direction. When the ejection mechanism is in the retracted position, the ejection mechanism abuts against the third surface to limit the ejection mechanism from continuing to slide along the first direction. The third surface is provided with a second air outlet, and the second air outlet is connected to the external environment. The second air outlet can blow air to slide the ejection mechanism to the ejection position.

6. The mold according to claim 5, characterized in that A plurality of the accommodating cavities are provided in the second template, and the ejection mechanisms are provided in multiple locations. The ejection mechanisms are placed in each of the accommodating cavities. A first air inlet is provided on the outer surface of the second template, and a first branch channel is provided in the second template. The first branch channel is connected to the first air inlet, and each of the first air outlets is connected to the first branch channel. The first air inlet is used to fill with gas.

7. The mold according to claim 6, characterized in that A second air inlet is provided on the outer surface of the second template, a second branch channel is provided in the second template, the second branch channel is connected to the second air inlet, each of the second air outlets is connected to the second branch channel, and the second air inlet is used for filling gas.

8. The mold according to claim 7, characterized in that The mold further includes an air supply mechanism, which is connected to the first air inlet and the second air inlet, and is used for blowing air to the first air inlet and the second air inlet.

9. The mold according to claim 2, characterized in that A distance between the first area and the second area along the first direction is L, and 1.5 mm ≤ L ≤ 3 mm.

10. The mold according to claim 1, characterized in that The ejection mechanism also includes an abutment surface, which is arranged around the first surface and extends along the first direction. The ejection mechanism is provided with a sealing ring, which is arranged on the abutment surface and abuts against the inner circumferential wall of the accommodating cavity to isolate the buffer space.

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