Mold stripping structure of half helmet shell mold
By adopting a combination structure of straight and oblique top in the half-helmet shell mold and using vertical and tilted moving units to control, the problems of large mold thickness, high cost and low production efficiency are solved, and efficient and low-cost half-helmet shell mold release are achieved.
Patent Information
- Application Number
- CN202421527364.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing half-helmet shell mold design leads to large thickness and high cost, requiring a large tonnage injection molding machine, long mold output operation time, high energy consumption and low production efficiency.
The combination structure of straight top and oblique top is adopted, and the vertical and tilted moving unit control is controlled to realize the mold release of the half-helmet shell, reduce the mold thickness and the mold opening stroke of the injection molding machine, and use a small tonnage injection molding machine to meet the requirements.
It reduces mold cost and production energy consumption, shortens mold output time, improves production efficiency, simplifies the mold structure, and is easy to demold the half-helmet shell.
Smart Images
Figure CN223147664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to a demoulding structure of a half helmet shell mold. Background Art
[0002] A half helmet shell is an object with a hemispherical or hemispherical-like structure. Since the half helmet shell has a certain curvature and can distribute the load well when under pressure, it has been widely used in the field of helmets.
[0003] When manufacturing a half helmet shell, it is often necessary to consider the impact of factors such as materials, molding process, mold design, surface treatment, internal structure, etc. on the preparation process of the half helmet shell. Among them, mold design is a key factor affecting the production of the half helmet shell.
[0004] However, if Figure 8 As shown, the prior art half-helmet shell mold requires the core 20 to drive the front inner slider 71 and the rear inner slider 72 to move inwards, and then move again to eject the left and right inclined ejectors 40. Thus, the half-helmet shell 60 is taken out. This design not only leads to a larger thickness of the core 20 mold and a higher mold cost, but also requires a larger tonnage injection molding machine due to the mold opening stroke requirement of the injection molding machine. Moreover, due to the longer demoulding time, a longer production time and higher energy consumption are required. Utility Model Content
[0005] In order to solve at least one of the above problems, according to one aspect of the utility model, a demoulding structure of a half helmet shell mold is provided.
[0006] The demoulding structure of the half-helmet shell mold includes a core; a straight top, which is arranged on the core through a vertical moving unit to move between a molding position and a demoulding position relative to the core along the axial direction of the half-helmet shell; an inclined top, which is arranged on the core through an inclined moving unit to move between a molding position and a demoulding position relative to the core along a direction with a non-zero angle with the axial direction of the half-helmet shell; the core, the straight top and the inclined top together constitute an inner mold of the half-helmet shell; the straight top and the inclined top have different movement strokes in the axial direction of the half-helmet shell.
[0007] Thus, after the injection molding of the half-helmet shell is completed, it is only necessary to control the movement of the straight ejector relative to the core by the vertical movement unit, and control the movement of the inclined ejector relative to the core by the inclined movement unit, and make the movement strokes of the straight ejector and the inclined ejector in the axial direction of the half-helmet shell different, so as to release most of the clamping force of the half-helmet shell on the inner mold, enabling the half-helmet shell to be easily separated from the core, the straight ejector and the inclined ejector, and realizing the demolding of the half-helmet shell. The demolding structure of the present utility model does not need to design a large ejector plate to drive the front and rear sliders to move inward, and the formed mold thickness will not be large, thus saving the mold cost; moreover, since the mold thickness is not large, the mold opening stroke of the injection molding machine will not be large either, and only a small-tonnage injection molding machine can meet the requirements, and the demolding time is short and the production efficiency is high, and both the production energy consumption and cost are reduced.
[0008] In some embodiments, the straight ejector is arranged on one side of the half-helmet shell where the demolding undercut is relatively large (relatively large here is compared with the side where the inclined ejector is located) along its axial direction. In the present utility model, the "undercut" is the invisible surface with the highest point as the reference point when viewed from the top view. Thus, during the demolding process of the inner mold of the half-helmet shell, the inclined movement unit can be first used to drive the inclined ejector to move to its demolding position to initially reduce the clamping force received by the half-helmet shell; then the vertical movement unit is used to drive the straight ejector to move to its demolding position. At this time, the clamping force received by the half-helmet shell is reduced compared with the clamping force when it is completely sleeved outside the inner mold. Therefore, even if the half-helmet shell is subject to a large resistance during the separation process from the straight ejector due to the undercut contact between the straight ejector and the half-helmet shell, the half-helmet shell can still be relatively easily separated from the straight ejector.
[0009] In some embodiments, there are two groups of inclined ejectors, and each group of inclined ejectors is respectively arranged on the left and right sides of the core through a group of inclined movement units; and / or the included angle range between the movement direction of the inclined movement unit driving the inclined ejector and the axial direction of the half-helmet shell is 5° - 9°. Since the two groups of inclined ejectors are separately arranged on the left and right sides of the core through a group of inclined movement units, when the inclined ejectors move from the forming position to their demolding positions under the drive of the inclined movement unit, the inclined ejectors on the left and right sides of the core gradually approach the core, making the distance between the two groups of inclined ejectors smaller and smaller. Therefore, even if the half-helmet shell has an undercut, the inclined ejectors are relatively easy to separate from the half-helmet shell during the movement to their demolding positions, which is conducive to the subsequent removal of the half-helmet shell. The separation distance between the inclined ejector and the half-helmet shell can be calculated by trigonometric functions. Preferably, the included angle between the movement direction of the inclined movement unit driving the inclined ejector and the axial direction of the half-helmet shell is 8°.
[0010] In some embodiments, the sum of the contact areas of all the inclined cores with the half-helmet shell is greater than the contact area of the straight core with the half-helmet shell; the vertical movement unit and the inclined movement unit are arranged such that the movement stroke of the straight core in the axial direction of the half-helmet shell driven by the vertical movement unit is greater than the movement stroke of the inclined core in the axial direction of the half-helmet shell driven by the inclined movement unit.
[0011] Thus, when demolding the inner mold, first, the inclined movement unit can drive the inclined core to move relative to the core to its demolding position, and then, the vertical movement unit can drive the straight core to move relative to the core to its demolding position. Since the sum of the contact areas of all the inclined cores with the half-helmet shell is greater than the contact area of the straight core with the half-helmet shell, when the straight core moves to its demolding position, the inclined cores have been separated from the half-helmet shell, so that the large clamping force (due to more contact areas) generated by the contact between the half-helmet shell and the inclined cores disappears, and only the small clamping force generated by the contact with the straight core remains. At this time, the operator can easily remove the half-helmet shell from the straight core by hand or other clamping tools, thereby realizing the demolding of the half-helmet shell.
[0012] In some embodiments, the vertical movement unit includes a first movement structure capable of driving the straight core to move along the axial direction of the half-helmet shell, and a first driving module capable of driving the straight core to move along the axial direction of the half-helmet shell under the drive of the first movement structure; and / or the inclined movement unit includes a second movement structure capable of driving the inclined core to move along a direction with a non-zero angle with the axial direction of the half-helmet shell, and a second driving module capable of driving the inclined core to move along a direction with a non-zero angle with the axial direction of the half-helmet shell under the drive of the second movement structure.
[0013] Thus, the stability of the movement of the straight core and the inclined core can be ensured by the first movement structure and the second movement structure respectively, and the operation intensity of the operator can be reduced by the drive of the first driving module and the second driving module.
[0014] In some embodiments, the driving stroke of the first driving module is greater than the driving stroke of the second driving module. Thus, the movement stroke of the straight core can be made greater than that of the inclined core by means of the first driving module and the second driving module, so that in the case where the sum of the contact areas of all the inclined cores with the half-helmet shell is greater than the contact area of the straight core with the half-helmet shell, the straight core with a large stroke can assist the half-helmet shell to separate from the inclined cores that generate a large clamping force, so that the half-helmet shell can be more easily separated from the straight core with a small clamping force subsequently.
[0015] In some embodiments, the first driving module and / or the second driving module is a hydraulic cylinder. Thus, the accuracy of the driving stroke can be improved by the hydraulic cylinder.
[0016] In some embodiments, based on the driving stroke of the first driving module being greater than that of the second driving module, the demolding structure of the half-helmet shell mold further includes a control module, which is configured to be able to control the first driving module and the second driving module to start synchronously. Thus, the automation of the demolding structure can be achieved with the help of the control module, and the accuracy of the starting and stopping actions of the driving module can also be ensured.
[0017] In some embodiments, the first moving structure includes a first guide rail arranged along the axis direction of the half-helmet shell and a first slider adapted to the first guide rail; wherein, the first guide rail and the first slider are respectively arranged on the core and the straight ejector pin; and / or the second moving structure includes a second guide rail arranged along a direction with a non-zero included angle with the axis direction of the half-helmet shell and a second slider adapted to the second guide rail; wherein, the second guide rail and the second slider are respectively arranged on the core and the inclined ejector pin. Thus, the stability and smoothness of the movement of the straight ejector pin and the inclined ejector pin can be achieved with the help of the moving structure of the guide rail and slider structure.
[0018] The first guide rail and / or the second guide rail is a guide rail with a "T" - shaped cross-section; a "T" - shaped groove adapted to the "T" - shaped guide rail is provided on the straight ejector pin and the inclined ejector pin, or on the core. Thus, when the straight ejector pin and the inclined ejector pin move relative to the core, restricted by the "T" - shaped guide rail, the straight ejector pin and the inclined ejector pin are not easily separated from the core. Brief Description of the Drawings
[0019] Figure 1 Schematic structural diagram of the straight ejector pin and the inclined ejector pin of the demolding structure of the half-helmet shell mold according to an embodiment of the present invention in the molding position;
[0020] Figure 2 is Figure 1 Schematic structural diagram of the inclined ejector pin of the demolding structure of the half-helmet shell mold shown in the demolding position;
[0021] Figure 3 is Figure 1 Schematic structural diagram of the straight ejector pin of the demolding structure of the half-helmet shell mold shown in the demolding position;
[0022] Figure 4 is Figure 3 Schematic structural diagram of another perspective of the demolding structure of the half-helmet shell mold shown;
[0023] Figure 5 Simplified structural diagram of the straight ejector pin and the inclined ejector pin of the demolding structure of the half-helmet shell mold according to an embodiment of the present invention in the molding position;
[0024] Figure 6 is Figure 5 Schematic longitudinal sectional structural diagram of the demolding structure of the half-helmet shell mold shown;
[0025] Figure 7 is Figure 5 a schematic cross-sectional structure diagram of the demolding structure of the half-helmet shell mold shown in the figure;
[0026] Figure 8 is a schematic structure diagram of the straight ejector and inclined ejector of the demolding structure of the existing half-helmet shell mold located at the molding position;
[0027] Reference numerals: 20, core; 30, straight ejector; 31, first guide rail; 32, first slider; 33, first driving module; 40, inclined ejector; 41, second guide rail; 42, second slider; 43, second driving module; 50, outer mold; 60, half-helmet shell; 71, front inner slider; 72, rear inner slider; 80, "T"-shaped groove. Specific embodiments
[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.
[0029] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising" and "including" not only include those elements, but also include other elements not explicitly listed, or also include elements inherent to this process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of other identical elements in the process, method, article or device including the said elements. The terms used in this text are generally the commonly used terms in the art. If they are inconsistent with the commonly used terms, the terms in this text shall prevail.
[0030] In this text, the term "axis of the half-helmet shell" refers to the axis in the vertical state when the half-helmet shell is in use.
[0031] In this text, the term "molding position" means that when the core, straight ejector, and inclined ejector are located at this position, the inner mold formed by the core, straight ejector, and inclined ejector can determine the morphology of the inner wall of the half-helmet shell by injection molding.
[0032] In this text, the term "demolding position" means that when the straight ejector and inclined ejector are located at this position, the half-helmet shell can be removed from the straight ejector and inclined ejector.
[0033] In this text, the term "inner mold" is a relative concept. The half-helmet shell also includes an outer mold. The inner mold is used to determine the morphology of the inner wall of the half-helmet shell, and the outer mold is used to determine the morphology of the outer wall of the half-helmet shell. When the inner mold and the outer mold are closed, the injection molding of the half-helmet shell can be realized by injecting into the space enclosed by the two.
[0034] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0035] Figures 1 to 7 Schematically shows the demolding structure of the half-helmet shell mold according to at least one embodiment of the present utility model.
[0036] As Figures 1 to 7 shown, the demolding structure of the half-helmet shell mold includes a core 20, a straight ejector 30, an inclined ejector 40, a first guide rail 31, a first slider 32, a second guide rail 41 and a second slider 42. The first guide rail 31 and the second guide rail 41 are connected to the core 20; the first guide rail 31 is arranged along the axial direction (extension direction) of the half-helmet shell 60; the second guide rail 41 is arranged along a direction (extension direction) with a non-zero angle with the axial direction of the half-helmet shell 60. The first slider 32 is arranged on the straight ejector 30, and the first slider 32 is adapted to the first guide rail 31. The second slider 42 is arranged on the inclined ejector 40, and the second slider 42 is adapted to the second guide rail 41. The straight ejector 30 can reciprocate between its molding position and demolding position along the extension direction of the first guide rail 31. The inclined ejector 40 can reciprocate between its molding position and demolding position along the extension direction of the second guide rail 41. The movement strokes of the straight ejector 30 and the inclined ejector 40 in the axial direction of the half-helmet shell 60 are different. The core 20, the straight ejector 30 and the inclined ejector 40 together constitute the inner mold of the half-helmet shell 60.
[0037] When the inner mold and the outer mold 50 are closed, the injection molding of the half-helmet shell 60 can be realized by injecting into the space enclosed by the two. After the injection molding of the half-helmet shell 60 is completed, only the direct ejector 30 and the lifter 40 need to move relative to the core 20, and the moving strokes of the direct ejector 30 and the lifter 40 in the axial direction of the half-helmet shell 60 are different, so that most of the clamping force of the half-helmet shell 60 on the inner mold can be released, enabling the half-helmet shell 60 to be easily separated from the core 20, the direct ejector 30 and the lifter 40, realizing the demolding of the half-helmet shell 60; moreover, since the movement process of the direct ejector 30 is restricted by the first guide rail 31 and the first slider 32, and the movement process of the lifter 40 is restricted by the second guide rail 41 and the second slider 42, the stability and smoothness of the movement of the direct ejector 30 and the lifter 40 can be ensured. The demolding structure of the present utility model does not need to design a large ejector plate to drive the front and rear sliders to move inward, and the formed mold thickness will not be large, thus saving the mold cost; moreover, since the mold thickness is not large, the mold opening stroke of the injection molding machine will not be large either, and only a small-tonnage injection molding machine can meet the requirements, and the demolding time is short and the production efficiency is high, and both the production energy consumption and cost are reduced. The demolding structure of the present utility model is also applicable to the half-helmet shell 60 with a relatively large front and rear undercuts. For such a half-helmet shell 60 using the mold of the prior art, not only is the mold structure complex, but also it is prone to the situation of difficult demolding. When the half-helmet shell 60 with a relatively large front and rear undercuts adopts the demolding structure of the present utility model, not only is the mold structure relatively simplified, but also the demolding of the half-helmet shell 60 is easily realized.
[0038] In some embodiments, the first guide rail 31 and the first slider 32 together constitute a vertical movement unit in one embodiment. Preferably, as Figure 2 , Figure 3 and Figure 5 shown, the vertical movement unit further includes a first driving module 33 capable of driving the direct ejector 30 to move along the extension direction of the first guide rail 31. At this time, the first guide rail 31 and the first slider 32 together constitute the first movement structure in the vertical movement unit. Thus, the operation intensity of the operator can be reduced by the first driving module 33. Further preferably, the first driving module 33 is a hydraulic cylinder to improve the accuracy of the driving stroke through the hydraulic cylinder.
[0039] In some embodiments, the second guide rail 41 and the second slider 42 together constitute an inclined movement unit in one embodiment. Preferably, as Figures 2 to 6 shown, the inclined movement unit further includes a second driving module 43 capable of driving the lifter 40 to move along the extension direction of the second guide rail 41. At this time, the second guide rail 41 and the second slider 42 together constitute the second movement structure in the inclined movement unit. Thus, the operation intensity of the operator can be reduced by the second driving module 43. Further preferably, the second driving module 43 is a hydraulic cylinder to improve the accuracy of the driving stroke through the hydraulic cylinder.
[0040] In some preferred embodiments, the driving stroke of the first driving module 33 is greater than that of the second driving module 43. Thus, when the sum of the contact areas of all the angled cores 40 with the half-helmet shell 60 is greater than the contact area of the straight core 30 with the half-helmet shell 60, the straight core 30 with a large stroke can assist the separation of the half-helmet shell 60 from the angled cores 40 that generate a large clamping force, so that the subsequent half-helmet shell 60 can be more easily separated from the straight core 30 with a smaller clamping force. Further preferably, the demolding structure of the half-helmet shell mold further includes a control module, which is configured to be able to control the first driving module 33 and the second driving module 43 to start synchronously. Specifically, when performing the demolding operation of the half-helmet shell 60, first, the half-helmet shell 60 is removed from the outer mold 50. At this time, the half-helmet shell 60 is wrapped around the inner mold (as Figure 1 shown); then, the first driving module 33 and the second driving module 43 are respectively used to drive the straight core 30 and the angled core 40 to move simultaneously. And because the driving stroke of the first driving module 33 is greater than that of the second driving module 43, when the second driving module 43 drives the angled core 40 to move to the demolding position of the angled core 40, the second driving module 43 stops driving the angled core 40 (as Figure 2 shown). At this time, the angled core 40 removes most of the undercuts of the half-helmet shell 60, while the first driving module 33 still continues to drive the straight core 30 to move, and both sides of the half-helmet shell 60 can be strongly elastically demolded, so that the half-helmet shell 60 gets rid of the restraint of the angled core 40; when the straight core 30 moves to its demolding position under the drive of the first driving module 33 (as Figure 3 and Figure 4 shown), it only needs to gently remove the half-helmet shell 60 from the straight core 30 to complete the demolding of the half-helmet shell 60. After completing the demolding of the half-helmet shell 60, the first driving module 33 and the second driving module 43 can also be respectively used to drive the straight core 30 and the angled core 40 to simultaneously retract to the molding position, and then the outer mold 50 and the inner mold are closed to perform the next injection molding. The control module provided by the present utility model can realize the automation of this demolding structure and can also ensure the accuracy of the start and stop actions of the driving module.
[0041] In other embodiments, the first driving module 33 and the second driving module 43 can also be synchronously started by connecting the first driving module 33 and the second driving module 43 in series. When both the first driving module 33 and the second driving module 43 are hydraulic cylinders, the straight core 30 and the angled core 40 can also be driven to be synchronously ejected by connecting the oil circuits of these hydraulic cylinders in series, as long as the stroke of the hydraulic cylinder serving as the first driving module 33 is greater than the stroke of the hydraulic cylinder serving as the second driving module 43.
[0042] In some embodiments, such as Figures 1 to 5As shown, the direct ejector 30 is arranged on the side of the half-helmet shell 60 with a relatively large demolding undercut along its axial direction. In the present utility model, the side of the half-helmet shell 60 with a relatively large demolding undercut along its axial direction is the rear side of the half-helmet shell 60.
[0043] In some preferred embodiments, as Figures 4 to 6 As shown, there are two sets of inclined ejectors 40, and each set of inclined ejectors 40 is respectively arranged on the left and right sides of the core 20 through a set of inclined moving units. In the present utility model, the left and right sides of the core 20 are the left and right sides of the half-helmet shell 60.
[0044] In some preferred embodiments, as Figure 6 As shown, the range of the angle between the moving direction of the inclined moving unit driving the inclined ejector 40 and the axial direction of the half-helmet shell 60 is 5° to 9°. Preferably, the angle between the moving direction of the inclined moving unit driving the inclined ejector 40 and the axial direction of the half-helmet shell 60 is 8°.
[0045] In some preferred embodiments, the sum of the contact areas of all the inclined ejectors 40 with the half-helmet shell 60 is greater than the contact area of the direct ejector 30 with the half-helmet shell 60; the vertical moving unit and the inclined moving unit are arranged such that the moving stroke of the direct ejector 30 in the axial direction of the half-helmet shell 60 driven by the vertical moving unit is greater than the moving stroke of the inclined ejector 40 in the axial direction of the half-helmet shell 60 driven by the inclined moving unit. Thus, when demolding the inner mold, first, the inclined moving unit can drive the inclined ejector 40 to move relative to the core 20 to its demolding position, and then, the vertical moving unit can drive the direct ejector 30 to move relative to the core 20 to its demolding position. Since the sum of the contact areas of all the inclined ejectors 40 with the half-helmet shell 60 is greater than the contact area of the direct ejector 30 with the half-helmet shell 60, when the direct ejector 30 moves to its demolding position, the inclined ejector 40 has been separated from the half-helmet shell 60, so that the large clamping force generated by the contact with the inclined ejector 40 on the half-helmet shell 60 disappears, and only the small clamping force generated by the contact with the direct ejector 30 remains. At this time, the operator can easily remove the half-helmet shell 60 from the direct ejector 30 by hand or other clamping tools, thereby realizing the demolding of the half-helmet shell 60.
[0046] In some preferred embodiments, the first slider 32 can be arranged on the direct ejector 30 or integrally formed with the direct ejector 30, that is, the direct ejector 30 is the first slider 32. The second slider 42 can be arranged on the inclined ejector 40 or integrally formed with the inclined ejector 40, that is, the inclined ejector 40 is the second slider 42.
[0047] In some preferred embodiments, as Figure 7As shown, the first guide rail 31 and / or the second guide rail 41 are guide rails with a "T"-shaped cross-section; a straight ejector 30 and an inclined ejector 40, or the core 20 is provided with a "T"-shaped groove 80 adapted to the "T"-shaped guide rail.
[0048] In the present utility model, connections or installations are fixed connections without special emphasis. The fixed connection can be realized as a detachable connection or a non-detachable connection commonly used in the prior art. The detachable connection can be realized by the prior art, such as screw connection or key connection. The non-detachable connection can also be realized by the prior art, such as welding or gluing.
[0049] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can be made, and these all belong to the protection scope of the present utility model.
Claims
1. An ejection structure for a half-helmet shell mold, characterized in that, Comprising: Core; Direct ejector, which is arranged on the core through a vertical moving unit to move relative to the core between a molding position and a demolding position along the axis direction of the half-helmet shell; Angled ejector, which is arranged on the core through an angled moving unit to move relative to the core between a molding position and a demolding position along a direction with a non-zero angle to the axis direction of the half-helmet shell; The core, the direct ejector and the angled ejector together constitute the inner mold of the half-helmet shell; The moving strokes of the direct ejector and the angled ejector in the axis direction of the half-helmet shell are different.
2. The demoulding structure of the half-helmet shell mould according to claim 1, characterized in that, The direct ejector is arranged on the side of the half-helmet shell where the demolding undercut is relatively large along its axis direction.
3. The demoulding structure of the half-helmet shell mould according to claim 1, characterized in that, There are two sets of angled ejectors, and the two sets of angled ejectors are respectively arranged on the left and right sides of the core through a set of angled moving units; and / or The range of the angle between the moving direction of the angled moving unit driving the angled ejector and the axis direction of the half-helmet shell is 5° to 9°.
4. The demolding structure of the half-helmet shell mold according to claim 1, 2 or 3, characterized in that, The sum of the contact areas of all the angled ejectors with the half-helmet shell is greater than the contact area of the direct ejector with the half-helmet shell; The vertical moving unit and the angled moving unit are arranged such that the moving stroke of the direct ejector along the axis direction of the half-helmet shell driven by the vertical moving unit is greater than the moving stroke of the angled ejector along the axis direction of the half-helmet shell driven by the angled moving unit.
5. The demolding structure of the half-helmet shell mold according to claim 4, characterized in that, The vertical moving unit includes a first moving structure capable of driving the direct ejector to move along the axis direction of the half-helmet shell, and a first driving module capable of driving the direct ejector to move along the axis direction of the half-helmet shell under the drive of the first moving structure; and / or The angled moving unit includes a second moving structure capable of driving the angled ejector to move along a direction with a non-zero angle to the axis direction of the half-helmet shell, and a second driving module capable of driving the angled ejector to move along a direction with a non-zero angle to the axis direction of the half-helmet shell under the drive of the second moving structure.
6. The demolding structure of the half-helmet shell mold according to claim 5, characterized in that, The driving stroke of the first driving module is greater than the driving stroke of the second driving module.
7. The demolding structure of the half-helmet shell mold according to claim 6, characterized in that, The first driving module and / or the second driving module is a hydraulic cylinder.
8. The demoulding structure of the half-helmet shell mould according to claim 6, characterized in that, It further includes a control module, and the control module is arranged to be able to control the first driving module and the second driving module to start synchronously.
9. The demoulding structure of the half-helmet shell mould according to claim 6, characterized in that, The first moving structure includes a first guide rail arranged along the axis direction of the half-helmet shell, and a first slider adapted to the first guide rail; wherein, the first guide rail and the first slider are respectively arranged on the core and the direct ejector; and / or The second moving structure includes a second guide rail arranged along a direction with a non-zero angle to the axis direction of the half-helmet shell, and a second slider adapted to the second guide rail; wherein, the second guide rail and the second slider are respectively arranged on the core and the angled ejector.
10. The demoulding structure of the half-helmet shell mould according to claim 9, characterized in that, The first guide rail and / or the second guide rail is a guide rail with a cross-section of "T" shape; The direct ejector and the angled ejector, or the core is provided with a "T" shaped groove adapted to the "T" shaped guide rail.