A helmet cover inner bracket mold

Abstract

The present invention discloses a mold for an inner bracket of a helmet cover, comprising an A plate, a B plate and two outer sliders, the two outer sliders are symmetrically slidably mounted on the B plate, the outer sliders are floatingly mounted with a fixed plate, the lateral ejector pins mounted on the fixed plate extend into the cavity, the A plate is fixedly mounted with an abutment block, the abutment block has a second guide groove, the push rod on the fixed plate is tightly abutted against the second guide groove and moves along the second guide groove, the outer slider moves away from the cavity when the mold is opened, and at the same time the second guide groove drives the lateral ejector pins to keep tightly abutted against the inner bracket in the cavity through the fixed plate. The present invention provides a mold for an inner bracket of a helmet cover, which provides additional support force for the inner bracket during the mold opening process by floatingly mounting a fixed plate with lateral ejector pins, reduces the risk of deformation caused by lateral force, and ensures uniform force of the ejector pins through precise guiding, thereby improving the demoulding success rate and product dimensional stability.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and more specifically to a helmet cover inner bracket mold. Background Art

[0002] In modern injection molding technology, the design of complex geometric shapes places higher demands on the molding process, especially when it comes to precision parts and thin-walled structures. Figure 1 As shown in the figure, the inner bracket of the helmet cover is C-shaped as a whole. Since the wall thickness of the inner bracket is relatively thin, only 3-5mm, its rigidity is low and it is easily affected by external forces during demolding. Especially in the undercut area, the lateral core pulling structure is easy to exert lateral force on the product during demolding. This force may cause local deformation of the product, which is specifically manifested as the defect of the inner bracket deforming outward. This not only affects the appearance of the product, but also may damage its assembly accuracy with other components, thereby affecting the overall molding quality. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art to a certain extent. To this end, the present invention proposes a helmet cover inner bracket mold, which provides additional support for the inner bracket during the mold opening process by floatingly installing a fixing plate with a lateral ejector pin, reduces the risk of deformation caused by the lateral force, and ensures that the ejector pin applies force uniformly through precise guidance, thereby improving the demoulding success rate and product dimensional stability.

[0004] The technical solution adopted by the present invention is: to provide a helmet cover inner bracket mold, including an A plate, a B plate and two outer sliders, the two outer sliders are symmetrically slidably installed on the B plate, the outer slider is floatingly installed with a fixed plate, the lateral ejector installed on the fixed plate extends into the cavity, the A plate is fixedly installed with an abutment block, the abutment block has a second guide groove, the push rod on the fixed plate is tightly abutted against the second guide groove and moves along the second guide groove, when the mold is opened, the outer slider moves away from the cavity, and at the same time, the second guide groove drives the lateral ejector through the fixed plate to keep it tightly abutted against the inner bracket in the cavity.

[0005] With the above structure, the mold can effectively reduce the impact of the demoulding lateral force on the inner bracket during the mold opening process, thereby reducing the risk of local deformation of the product. Specifically, by floatingly installing a fixed plate with lateral ejector pins on the outer slider, the lateral ejector pins always fit the key position of the inner bracket during the demoulding process, providing it with additional support. This support method effectively prevents the inner bracket from deforming outwards due to lateral force.

[0006] In addition, the cooperation between the abutment block and the second guide groove ensures that the movement trajectory of the lateral ejector pin during the demoulding process is accurate and stable. Through this precise guidance, the lateral ejector pin can move synchronously with the outer slider, thereby maintaining uniform force on the thin-walled inner bracket during the mold opening process, further improving the demoulding success rate and the dimensional stability of the product.

[0007] According to one embodiment of the present invention, the second guide groove includes a locking section. When the outer slider moves away from the cavity during mold opening, the locking section drives the lateral ejector to move toward the cavity, thereby offsetting the stroke of the lateral ejector driven by the outer slider; the lateral ejector stroke caused by the movement of the outer slider is cleverly compensated by the guiding effect of the locking section, ensuring that the lateral ejector always maintains a stable posture and position during the demolding process. Specifically, the setting of the locking section enables the lateral ejector to move in the opposite direction when the outer slider moves away from the cavity, so that the lateral ejector always maintains external support during the process of the outer slider detaching from the plastic part, preventing the internal bracket plastic part from deforming.

[0008] According to one embodiment of the present invention, the second guide groove further includes a release section, and the release section drives the lateral ejector to move in a direction away from the cavity; through the guiding effect of the release section, the lateral ejector can gradually move away from the cavity after the outer slider moves to a specific position.

[0009] According to one embodiment of the present invention, the mold further comprises a slider seat and two inner sliders, the two inner sliders are slidably mounted on both sides of the slider seat, the outer slider is used to form a first undercut on the inner bracket, and the inner slider is used to form a second undercut on the inner bracket. Since the first undercut and the second undercut are provided on the inner and outer sides of the inner bracket, it is necessary to set an inner slider and an outer slider, and the combination of the inner and outer sliders is used to form an undercut structure of the inner bracket. The slider seat and the inner slider are combined to form an inward-retracting slider structure, and the inner slider gradually retracts into the interior of the slider seat when the mold is opened, thereby releasing the constraint on the second undercut of the inner bracket.

[0010] According to one embodiment of the present invention, the B plate is movably mounted on the lower die pad along the mold opening direction, and the slider seat is fixedly mounted on the lower die pad. When the B plate moves relative to the lower die pad, the lower die pad drives the slider seat to move synchronously, and the slider seat drives the inner slider to move away from the cavity.

[0011] According to one embodiment of the present invention, a first guide groove is provided on the inclined surface of the slider seat, and a first pin is installed in a floating manner on the inner slider. The inner end of the first pin extends into the cavity, and the outer end is abutting the first guide groove and moves along the first guide groove. When the mold is opened, the inner slider moves away from the cavity, and at the same time, the first guide groove drives the first pin to move toward the cavity, thereby offsetting the stroke of the inner slider driving the first pin to move, so that the first pin remains in close contact with the inner bracket in the cavity. When demolding, the direct separation of the inner slider and the outer slider will cause the inner bracket to deform inward or outward. In order to prevent its deformation, the first pin and the lateral ejector pin are provided. The first pin provides support to the inner bracket from the inside, and the lateral ejector pin applies a uniform resistance force from the outside, and the two form an internal and external bidirectional clamping structure. In this way, during the entire process of mold opening and demolding, the geometric shape of the inner bracket can be effectively maintained to avoid deformation caused by uneven force.

[0012] Specifically, the first pin is precisely guided by the first guide groove, so that it can move in the opposite direction when the mold is opened to offset the travel effect exerted on it by the movement of the inner slider. At the same time, the first pin always maintains close contact with the inner bracket in the cavity, providing reliable inner support force for the inner bracket. The lateral ejector pin supports or constrains the outer side of the inner bracket through the second guide groove and the associated floating structure, further enhancing the stability of the overall demolding process. Through this internal and external bidirectional design, even if the inner bracket has a thin wall thickness or a complex geometry, it can still maintain good dimensional accuracy and surface flatness during the demolding process. Especially in the undercut area or thin-wall transition area, this bidirectional clamping structure can significantly reduce the destructive effect of lateral force on the inner bracket.

[0013] According to one embodiment of the present invention, the fixing plate is installed with a second pin. When the mold is closed, the inner end of the second pin abuts against the positioning groove on the inner slider. When the mold is opened, the outer slider moves away from the cavity. At the same time, the second guide groove drives the second ejector pin to keep in close contact with the inner slider through the fixing plate. When the mold is closed, the inner end of the second pin abuts against the positioning groove of the inner slider to form a stable positioning relationship, thereby avoiding the shaking or displacement of the outer slider during the mold closing process. At the same time, the second guide groove is linked with the second pin through the fixing plate, so that when the mold is opened, the outer slider can move away from the cavity along the set trajectory, while the second pin always maintains the guiding effect on the outer slider, thereby avoiding unnecessary interference to the movement of the lateral ejector pin.

[0014] According to one embodiment of the present invention, a contact block is fixedly installed on the outer side of the outer slider, the fixed plate is floatingly installed between the contact block and the outer slider, and the push rod extends out of the contact block. The space for installing the fixed plate formed by the combination of the outer slider and the contact block provides sufficient operating range and flexibility for the floating installation of the fixed plate. Through this design, the fixed plate can maintain a certain degree of freedom between the outer slider and the contact block, adapt to complex movement paths during the opening and closing process of the mold, thereby effectively reducing the mechanism interference caused by forced movement or uneven force on the fixed plate.

[0015] According to an embodiment of the present invention, the inner slider is provided with a T-shaped groove, the inclined surface of the slider seat is provided with a T-shaped block, and the T-shaped groove and the T-shaped block are slidably matched. The arrangement of the T-shaped groove and the T-shaped block allows the inner slider and the slider seat to form an inclined wedge structure, and the axial movement of the slider seat is converted into the horizontal movement of the inner slider.

[0016] According to one embodiment of the present invention, the contact block is provided with a lateral guide column, and the fixed plate has a lateral guide hole that is slidably matched with the lateral guide column. The guiding effect of the lateral guide column ensures the stability of the fixed plate during the movement of the lateral ejector pin. When the mold is opened or closed or the ejector pin is reset, the fixed plate can slide along the predetermined path of the lateral guide column, thereby maintaining the stable support of the lateral ejector pin on the inner bracket, preventing the fixed plate from rotating or shaking, and further enhancing the rigidity and reliability of the system.

[0017] According to one embodiment of the present invention, the A plate is fixedly mounted with an inclined guide column, the outer slider is slidably matched with the inclined guide column, and the inclined guide column drives the outer slider to move outward by utilizing the mold opening force between the A plate and the B plate, that is, drives the outer slider to move away from the cavity; and / or

[0018] The inner end of the outer slider is connected to a molding block, and the inner end of the lateral ejector extends into the molding block; the molding block has a molding surface for molding the outer surface of the inner bracket. By separating the molding block from the outer slider, the designer can arrange a more complex and precise water channel structure in the molding block, thereby achieving efficient temperature control of a local area of ​​the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional diagram of the inner bracket in the embodiment of the present invention.

[0021] Figure 2Schematic diagram of the structure of the mold in the embodiment of the present invention.

[0022] Figure 3 It is a cross-sectional view of the mold when opening the mold in the embodiment of the present invention.

[0023] Figure 4 It is a three-dimensional diagram of the inner slider and the slider seat when the mold is closed in an embodiment of the present invention.

[0024] Figure 5 It is a three-dimensional diagram of the inner slider and the slider seat when the mold is opened in the embodiment of the present invention.

[0025] Figure 6 It is an exploded view of the inner slider and the slider seat in the embodiment of the present invention.

[0026] Figure 7 It is a three-dimensional diagram of the inner slider and the slider seat in the embodiment of the present invention.

[0027] Figure 8 It is a three-dimensional diagram of the outer sliding block in the embodiment of the present invention.

[0028] Fig. 9 1 is an exploded view of the outer slider in an embodiment of the present invention.

[0029] Fig.10 It is a three-dimensional diagram of the second pin and the inner slider in the embodiment of the present invention.

[0030] Fig.11 4 is a perspective view of an outer slider in an embodiment of the present invention.

[0031] Fig.12 3D is a three-dimensional diagram of the first plug pin in the embodiment of the present invention.

[0032] Fig.13 Schematic diagram of the structure of the inner side of the abutment block in an embodiment of the present invention.

[0033] Description of the numbers in the figure:

[0034] 1. Inner bracket; 2. B plate; 3. Outer slider; 4. Inner slider; 5. Slider seat; 6. Lateral ejector pin; 7. First pin; 8. Lower die insert; 9. Lower die pad; 10. Oblique guide column; 11. Abutment block; 12. Second pin; 13. Forming block; 14. Fixing plate; 15. Contact block; 16. Ejector plate;

[0035] 1a, first inverted buckle; 1b, second inverted buckle;

[0036] 4a, through hole; 4b, T-slot; 4c, positioning slot;

[0037] 5a, first guide groove; 5b, T-shaped block;

[0038] 7a, abutment end; 7b, first spring; 7c, fixing block;

[0039] 11a, second guide groove; 11b, locking section; 11c, release section;

[0040] 12a, second spring;

[0041] 14a, lateral guide hole; 14b, push rod;

[0042] 15a. Lateral guide column. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0044] like Figure 1 As shown, in this embodiment, the helmet cover inner bracket 1 is in a C shape as a whole, with a first undercut 1a provided on the outer side and a second undercut 1b provided on the inner side. The first undercut 1a is a buckle groove, and the second undercut 1b is a connecting column. The connecting column is formed by the inner surface of the inner bracket 1 protruding outward, and a connecting hole is provided in the center of the connecting column for fasteners to pass through.

[0045] like Figure 2-13 As shown, in this embodiment, a mold for an inner bracket 1 of a helmet cover is disclosed, comprising an A plate (not shown in the figure), a B plate 2 and two outer slide blocks 3, wherein the two outer slide blocks 3 are symmetrically slidably mounted on the B plate 2, the outer slide blocks 3 are floatingly mounted with a fixing plate 14, and the lateral ejector pins 6 mounted on the fixing plate 14 extend into the cavity, the A plate is fixedly mounted with an abutment block 11, and the abutment block 11 has a second guide groove 11a, and the push rod 14b on the fixing plate 14 is tightly abutted against the second guide groove 11a and moves along the second guide groove 11a, and when the mold is opened, the outer slide block 3 moves away from the cavity, and at the same time, the second guide groove 11a drives the lateral ejector pins 6 through the fixing plate 14 to keep tightly abutting against the inner bracket 1 in the cavity.

[0046] Furthermore, in this embodiment, the A plate and Figure 2 The inclined guide pins 10 and the abutment blocks 11 in the mold are the fixed mold part of the mold, and the rest is the movable mold part of the mold. The B plate 2 is movably mounted on the lower mold pad 9, the A plate and the B plate 2 are the first parting surface, the B plate 2 and the lower mold pad 9 are the second parting surface, and a driving source is provided between the B plate 2 and the lower mold pad 9 to drive the two to move. In this embodiment, the driving source is a cylinder, and in other embodiments, the driving source is a servo motor.

[0047] Furthermore, combined with Figure 3 As shown, in this embodiment, two inclined guide pillars 10 are fixedly mounted on the A plate, and the outer slider 3 has an inclined guide hole adapted to the inclined guide pillars 10. When the mold is opened, the first parting surface is opened, and the two inclined guide pillars 10 simultaneously drive the two outer sliders 3 to move outward, and at the same time, the A plate drives the abutment block 11 to move. The abutment block 11 is arranged obliquely, and a second guide groove 11a is provided on its inner surface.

[0048] Furthermore, combined with Fig. 9 As shown, a plurality of lateral ejectors 6 are fixedly mounted on the inner side of the fixing plate 14, and the inner ends of the lateral ejectors 6 extend into the cavity. A push rod 14b is fixedly mounted on the outer side of the fixing plate 14, and the outer end of the push rod 14b has an arc surface to reduce friction with the abutment block 11.

[0049] Furthermore, combined with Fig.13 As shown, the outer end of the push rod 14b is slidably matched with the second guide groove 11a, and the second guide groove 11a includes a locking section 11b. When the mold is opened, the outer slide 3 moves away from the cavity, and the locking section 11b drives the lateral ejector 6 to move toward the cavity, thereby offsetting the stroke of the lateral ejector 6 driven by the outer slide 3. The second guide groove 11a also includes a release section 11c, and the release section 11c drives the lateral ejector 6 to move away from the cavity.

[0050] Furthermore, combined with Figure 8-11 As shown, in this embodiment, a contact block 15 is fixedly mounted on the outer side of the hollow outer slider 3, the fixed plate 14 is floatingly mounted between the contact block 15 and the outer slider 3, and the push rod 14b extends out of the contact block 15. The inner end of the outer slider 3 is connected to a forming block 13, and the inner end of the lateral ejector pin 6 extends into the forming block 13.

[0051] Furthermore, in this embodiment, the outer surface of the contact block 15 is an inclined surface, and its inclination is against the inclination of the abutment block 11. When the mold is opened, the abutment block 11 slides along the inclined surface on the contact block 15. The contact block 15 is provided with a lateral guide column 15a, and the fixing plate 14 has a lateral guide hole 14a that is slidably matched with the lateral guide column 15a.

[0052] Specifically, combined Fig.10 As shown, in this embodiment, the fixing plate 14 is installed with a second pin 12. When the mold is closed, the inner end of the second pin 12 abuts against the positioning groove 4c on the inner slider 4. When the mold is opened, the outer slider 3 moves away from the cavity. At the same time, the second guide groove 11a drives the second pin to keep in close contact with the inner slider 4 through the fixing plate 14. When the mold is closed, the inner end of the second pin 12 abuts against the positioning groove 4c of the inner slider 4, forming a stable positioning relationship, which prevents the outer slider 3 from shaking or deflecting during the mold closing process.

[0053] Furthermore, in this embodiment, a second spring 12a is provided between the fixing plate 14 and the outer slider 3, and the second spring 12a is sleeved on the second pin 12 to provide a rebound force for the movement of the fixing plate 14. The second spring 12a has an elastic tendency to move the fixing plate 14 away from the cavity.

[0054] Specifically, combined Figure 3-7 As shown, in this embodiment, the mold further includes a slider seat 5 and two inner sliders 4. The two inner sliders 4 are slidably mounted on both sides of the slider seat 5. The outer slider 3 is used to form the first undercut 1a on the inner bracket 1, and the inner slider 4 is used to form the second undercut 1b on the inner bracket 1. The B plate 2 is movably mounted on the lower die pad 9 along the mold opening direction, and the slider seat 5 is fixedly mounted on the lower die pad 9. When the B plate 2 moves relative to the lower die pad 9, the lower die pad 9 drives the slider seat 5 to move synchronously, and the slider seat 5 drives the inner slider 4 to move away from the cavity.

[0055] Furthermore, in this embodiment, the inner slider 4 and the outer slider 3 are arranged on both sides of the cavity, and the two inner sliders 4 are arranged one by one with the two outer sliders 3, and the inner slider 4 is provided with a plurality of through holes 4a. When the mold is opened, the second parting surface is opened, and the lower mold pad 9 drives the slider seat 5 to move away from the B plate 2 along the mold opening direction. The two inner sliders 4 are provided with T-shaped grooves 4b, and the inclined surfaces on both sides of the slider seat 5 are provided with T-shaped blocks 5b, and the T-shaped grooves 4b and the T-shaped blocks 5b are slidably matched. The inner slider 4 and the slider seat 5 form an inward-retracting slider structure.

[0056] Specifically, combined Figure 6-7 As shown, a first guide groove 5a is provided on the inclined surface of the slider seat 5, and a first pin 7 is floatingly installed on the inner slider 4. The inner end of the first pin 7 extends into the cavity, and the outer end is a contact end 7a that tightly abuts against the first guide groove 5a and moves along the first guide groove 5a. When the mold is opened, the inner slider 4 moves away from the cavity, and at the same time, the first guide groove 5a drives the first pin 7 to move toward the cavity, thereby offsetting the stroke of the inner slider 4 driving the first pin 7 to move, so that the first pin 7 remains tightly abutted against the inner bracket 1 in the cavity.

[0057] Furthermore, combined with Fig.12As shown, in this embodiment, one end of the first pin 7 is the abutment end 7a, and the other end passes through the through hole 4a on the inner slider 4 and extends into the cavity. A first spring 7b and a fixing block 7c are provided between the first pin 7 and the inner slider 4. The first spring 7b is sleeved in the first pin 7 and has an elastic tendency to move the first pin 7 away from the cavity. The combination of the fixing block 7c and the inner slider 4 constitutes a space for installing the first pin 7. The abutment end 7a of the first pin 7 extends out of the fixing block 7c and abuts against the first guide groove 5a. The first guide groove 5a has a guiding surface. When the second parting surface is opened, the inner slider 4 shrinks as a whole to drive the first pin 7 to move inward. At the same time, since the abutment end 7a of the first pin 7 is in close contact with the first guide groove 5a, the first guide groove 5a drives the first pin 7 to move outward, and the first spring 7b is continuously compressed. The inward and outward movement of the first pin 7 offset each other, so that the first pin 7 remains in close contact with the inner bracket 1 in the cavity, playing an inner support role. When the inner slider 4 is separated from the inner bracket 1 without causing damage to the plastic part of the inner bracket 1 , the abutting end 7 a is separated from the first guide groove 5 a , and the inner slider 4 drives the first pin 7 to separate from the plastic part of the inner bracket 1 .

[0058] Furthermore, in this embodiment, the B plate 2 is fixedly mounted with a lower die insert 8, which is located above the slider seat 5 and the inner slider 4 and is used to form the arc-shaped area in the middle of the built-in component. The inner slider 4 is slidably connected to the lower die insert 8, and the slider seat 5 is not directly connected to the lower die insert 8. The lower part of the lower die pad 9 is provided with an ejector plate 16, and the ejector (not shown in the figure) on the ejector plate 16 passes through the slider seat 5 and the lower die insert 8 in sequence.

[0059] In this embodiment, the mold opening process of the helmet cover inner bracket 1 mold is as follows:

[0060] First, the first parting surface between the A plate and the B plate 2 is opened, and the inclined guide column 10 drives the outer slider 3 to move outward. At the same time, the second guide groove 11a on the abutment block 11 drives the fixed plate 14 to move inward through the push rod 14b, and the fixed plate 14 drives the lateral ejector 6 to move synchronously. The inward movement of the fixed plate 14 offsets the distance that the outer slider 3 pushes the fixed plate 14 outward, thereby ensuring that the lateral ejector 6 is in close contact with the plastic part of the inner bracket 1 in the cavity, providing external support.

[0061] Next, the second parting surface between the B plate 2 and the lower die pad 9 is opened, and the lower die pad 9 drives the slider seat 5 to move relative to the B plate 2, and the slider seat 5 drives the two inner sliders 4 to move inward. At the same time, the first guide groove 5a on the slider seat 5 drives the first pin 7 to move outward. The outward movement of the first pin 7 offsets the distance that the inner slider 4 pushes the first pin 7 to move inward, thereby ensuring that the first pin 7 is in close contact with the inner bracket 1 in the cavity, playing an internal support role.

[0062] Finally, the first parting surface and the second parting surface continue to open until the lateral ejector pins 6 and the first insertion pins 7 are completely separated from the plastic part of the inner bracket 1 , and finally the ejector plate 16 pushes the plastic part of the inner bracket 1 out.

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A helmet cover inner bracket mold, comprising a plate A, a plate B and two outer sliders, wherein the two outer sliders are symmetrically slidably mounted on the plate B, characterized in that: The outer slider is floatingly mounted with a fixed plate, and the lateral ejector mounted on the fixed plate extends into the cavity. The A plate is fixedly mounted with an abutment block, and the abutment block has a second guide groove. The push rod on the fixed plate is tightly abutted against the second guide groove and moves along the second guide groove. When the mold is opened, the outer slider moves away from the cavity, and at the same time, the second guide groove drives the lateral ejector through the fixed plate to keep tightly abutted against the inner bracket in the cavity. It also includes a slider seat and two inner sliders, the two inner sliders are slidably mounted on both sides of the slider seat, the outer slider is used to form a first undercut on the inner bracket, and the inner slider is used to form a second undercut on the inner bracket; The fixed plate is equipped with a second pin. When the mold is closed, the inner end of the second pin is pressed against the positioning groove on the inner slider. When the mold is opened, the outer slider moves away from the cavity. At the same time, the second guide groove drives the second pin through the fixed plate to keep it in close contact with the inner slider.

2. The helmet cover inner bracket mold according to claim 1, characterized in that: The second guide groove includes a locking section. When the mold is opened, the outer slider moves away from the cavity, and the locking section drives the lateral ejector to move toward the cavity, thereby offsetting the stroke of the lateral ejector driven by the outer slider.

3. The helmet cover inner bracket mold according to claim 2, characterized in that: The second guide groove further includes a release section, and the release section drives the lateral ejector pin to move in a direction away from the cavity.

4. The helmet cover inner bracket mold according to claim 1, characterized in that: The B plate is movably mounted on the lower die pad along the mold opening direction, and the slider seat is fixedly mounted on the lower die pad. When the B plate moves relative to the lower die pad, the lower die pad drives the slider seat to move synchronously, and the slider seat drives the inner slider to move away from the cavity.

5. The helmet cover inner bracket mold according to claim 1, characterized in that: A first guide groove is provided on the inclined surface of the slider seat, and a first pin is floatingly installed on the inner slider. The inner end of the first pin extends into the cavity, and the outer end is a contact end that tightly abuts against the first guide groove and moves along the first guide groove. When the mold is opened, the inner slider moves away from the cavity, and at the same time, the first guide groove drives the first pin to move toward the cavity, thereby offsetting the stroke of the first pin driven by the inner slider, so that the first pin remains tightly abutted against the inner bracket in the cavity.

6. The helmet cover inner bracket mold according to claim 1, characterized in that: A contact block is fixedly mounted on the outer side of the outer slider, the fixed plate is floatingly mounted between the contact block and the outer slider, and the push rod extends out of the contact block.

7. The helmet cover inner bracket mold according to claim 6, characterized in that: The contact block is provided with a lateral guide column, and the fixing plate has a lateral guide hole which is slidably matched with the lateral guide column.

8. The helmet cover inner bracket mold according to claim 1, characterized in that: The A plate is fixedly mounted with an inclined guide column, and the outer sliding block is slidably matched with the inclined guide column; and / or The inner end of the outer sliding block is connected with a forming block, and the inner end of the lateral ejector pin extends into the forming block.

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