Injection mold with forced demolding structure

Abstract

An injection mold with a forced demolding structure comprises a front mold plate and a rear mold plate, a cavity used for forming a product is formed between the front mold plate and the rear mold plate, a first slide seat is arranged on the rear mold plate in a sliding mode, a slide insert is movably arranged on the first slide seat in the movement direction of the first slide seat, and the slide insert is provided with a ball head part. A first inclined guide hole penetrating through the upper surface and the lower surface of the slide insert is formed in the end, away from the ball head portion, of the slide insert, a second inclined guide hole communicated with the first inclined guide hole is formed in the upper surface and the lower surface of the first slide base in a penetrating mode, and a guide piece is installed on the front mold plate and matched with the first inclined guide hole and the second inclined guide hole. The guide part is movably arranged on the rear mold plate and used for sequentially pushing the first slide seat and the slide insert, and a receding insert is movably arranged on the rear mold plate and wraps at least part of the ball head part; the front mold plate, the rear mold plate, the first slide base, the slide insert and the receding insert jointly define a cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with a strong release structure. Background Art

[0002] In the production of injection molds, many products have undercut structures, such as ball sleeve-shaped products. These products are difficult to demold during the mold opening process due to the undercut structure. At this time, a forced demolding mechanism is required.

[0003] However, the existing forced demoulding has a very limited scope of use. After the mold is opened, the strong demoulding position of the product must have sufficient deformation space to achieve smooth demoulding, resulting in many products having to change their designs due to failure to meet demoulding requirements. If the product does not have sufficient deformation space for forced demoulding, it will cause product damage, affecting the product's appearance and functional dimensions, thereby reducing the product yield.

[0004] Therefore, it is necessary to design a structure for forced demoulding of this type of product so that the product has enough deformation space during the forced demoulding process, thereby allowing the product to be demoulded smoothly. Utility Model Content

[0005] The utility model aims to provide an injection mold with a strong release structure to solve the problem that the cooling time of the product and the residual part in the current injection mold is long and there is fracture.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An injection mold with a strong release structure comprises a front template and a rear template, a cavity for molding a product is arranged between the front template and the rear template, a first row seat is slidably arranged on the rear template, a row insert is movably arranged on the first row seat along the movement direction of the first row seat, the row insert has a ball head, the ball head protrudes from the cavity, a first oblique guide hole penetrating the upper and lower surfaces of the row insert is opened at one end of the row insert away from the ball head, a second oblique guide hole connected to the first oblique guide hole is opened through the upper and lower surfaces of the first row seat, and the front A guide member is installed on the template, which cooperates with the first inclined guide hole and the second inclined guide hole, and the guide member is used to sequentially push the first row seat and the row insert. A clearance insert is movably arranged on the rear template, and the clearance insert covers at least part of the ball head; the front template, the rear template, the first row seat, the row insert, and the clearance insert jointly surround the molding cavity; when the mold is opened, the clearance insert moves in the direction of the ball head away from the row insert, and at the same time, the guide member sequentially pushes the row insert and the first row seat to move in the direction away from the product to complete the product demolding.

[0008] Further, a cross-sectional area of ​​the second oblique guide hole is greater than a cross-sectional area of ​​the first oblique guide hole, and a length of the second oblique guide hole along the X direction is greater than a length of the first oblique guide hole along the X direction.

[0009] Furthermore, the guide member includes a shovel base installed on the front template and a guide block installed on the shovel base, and the guide block matches the first oblique guide hole and the second oblique guide hole.

[0010] Furthermore, the cross-section of the guide block is T-shaped, and the guide block has a connecting portion connected to the shovel base and an abutting top portion vertically connected to the connecting portion, the abutting top portion extends along the Y direction, the abutting top portion can move in the first inclined guide hole and the second inclined guide hole, and is used to abut the inner wall of the first inclined guide hole and the inner wall of the second inclined guide hole.

[0011] Furthermore, a first connecting groove connected to the first inclined guide hole is formed in the corresponding connecting part of the slide insert, and a second connecting groove connected to the second inclined guide hole is formed in the corresponding connecting part of the first slide seat. The first connecting groove is connected to the second connecting groove, and the spacing between the two opposite inner walls of the first connecting groove and the spacing between the two opposite inner walls of the second connecting groove are respectively greater than the length of the connecting part along the Y direction.

[0012] Furthermore, the slide insert also has a transmission part connected to the ball head, the first inclined guide hole is arranged in the transmission part and passes through the upper and lower surfaces of the transmission part, the first connecting groove is opened on one end of the transmission part away from the ball head, and the first connecting groove is connected to the first inclined guide hole.

[0013] Furthermore, the first slider seat is provided with a first inclined surface, and the end of the transmission part of the slider insert away from the ball head is provided with a second inclined surface, and the shovel base is respectively provided with a first inclined guide surface and a second inclined guide surface corresponding to the first inclined surface and the second inclined surface; when the mold is closed, the first inclined guide surface presses against the first inclined surface to push the first slider seat to move inward, and the second inclined guide surface presses against the second inclined surface to push the transmission part to drive the ball head to move inward.

[0014] Furthermore, a second row of seats is slidably arranged on the rear template, and the paving insert is connected to the second row of seats; when the mold is opened, the second row of seats drives the paving insert to move away from the product.

[0015] Furthermore, a third oblique guide hole is opened on the second row seat, and an oblique guide column is set on the front template corresponding to the third oblique guide hole; when opening the mold, the front template cooperates with the third oblique guide hole through the oblique guide column to drive the second row seat away from the product.

[0016] Furthermore, one end of the giving way insert is connected to a driving device, and the driving device drives the giving way insert to move on the rear template.

[0017] The utility model has the beneficial effects of an injection mold with a strong demoulding structure: when opening the mold, the insert is moved away from the product to give the product space for deformation, thereby avoiding damage to the product during the strong demoulding process and improving the product yield; through the cooperation of the guide, the first oblique guide hole and the second oblique guide hole, the row insert and the first row seat are separated from the product in sequence, so that when the ball head of the row insert is forcibly removed from the product, the first row seat presses against the product, and the product is smoothly demoulded. Therefore, not only is the structure simple, strong demoulding of the product is achieved, but also the product yield is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the injection mold with a strong release structure in the mold closing state of Example 1 of the utility model.

[0019] Figure 2 A partial schematic diagram of the mold opening process of the injection mold with a strong release structure in Example 1 of the utility model Figure 1 .

[0020] Figure 3 A partial schematic diagram of the mold opening process of the injection mold with a strong release structure in Example 1 of the utility model Figure 2 .

[0021] Figure 4 This is a cross-sectional view of the injection mold with a strong release structure in embodiment 1 of the utility model in the mold closing state at another angle.

[0022] Figure 5 for Figure 4 A cross-sectional view of an injection mold with a strong release structure in the mold opening state.

[0023] Figure 6 for Figure 1 A cross-sectional view of the first row of seats is shown.

[0024] Figure 7 for Figure 1 A partial schematic diagram of the first row of seats from another angle is shown.

[0025] Figure 8 for Figure 1 A three-dimensional view of the first row of seats shown.

[0026] Fig. 9 for Figure 1 A perspective view of the slide insert is shown.

[0027] Fig.10 for Figure 1 A perspective view of the guide block is shown.

[0028] Fig.11 for Figure 1 A perspective view of the shovel base shown.

[0029] Fig.12 This is a cross-sectional view of the injection mold with a strong release structure in the mold opening state of Example 1 of the utility model.

[0030] Fig.13 A partial schematic diagram of the mold closing process of the injection mold with a strong release structure according to Example 1 of the utility model Figure 1 .

[0031] Fig.14 A partial schematic diagram of the mold closing process of the injection mold with a strong release structure according to Example 1 of the utility model Figure 2 .

[0032] Fig.15 It is a cross-sectional view of an injection mold with a strong release structure according to Example 2 of the utility model. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc. in the specification and claims of the utility model indicate directions or position relationships based on the directions or position relationships shown in the drawings, and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore cannot be understood as limitations on the present application.

[0035] Embodiment 1:

[0036] See also Figure 1 and Fig.12 An injection mold with a strong release structure includes a front template 10 and a rear template 20, wherein a cavity 100 for molding a product is arranged between the front template 10 and the rear template 20.

[0037] A first slider seat 30 is slidably provided on the rear template 20, and a slider insert 40 is movably provided on the first slider seat 30 along the movement direction of the first slider seat 30, the slider insert 40 has a ball head 41, and the ball head 41 protrudes from the cavity 100, and a first inclined guide hole 43 penetrating the upper and lower surfaces of the slider insert 40 is formed at one end of the slider insert 40 away from the ball head 41, and a second inclined guide hole 31 connected to the first inclined guide hole 43 is formed through the upper and lower surfaces of the first slider seat 30.

[0038] A guide member 50 is installed on the front template 10 . The guide member 50 matches the first oblique guide hole 43 and the second oblique guide hole 31 , and is used to push the first slide seat 30 and the slide insert 40 in sequence.

[0039] The rear template 20 is provided with a movably disposed recessed insert 60, and the recessed insert 60 covers at least a portion of the ball head 41. The front template 10, the rear template 20, the first slide seat 30, the slide insert 40, and the recessed insert 60 together form the mold cavity 100;

[0040] When the mold is opened, the yield insert 60 moves in the direction away from the ball head 41 of the slide insert 40. At the same time, the guide member 50 pushes the slide insert 40 and the first slide seat 30 in turn to move away from the product, thereby completing product demoulding.

[0041] As described above, the injection mold with a forced demoulding structure proposed by the utility model, when opening the mold, the said giving way insert 60 is away from the product, so as to give the product space for deformation, thereby avoiding the product from being damaged during the forced demoulding process, and improving the product yield; through the cooperation of the said guide member 50, the first inclined guide hole 43, and the second inclined guide hole 31, the said slide insert 40 and the first slide seat 30 are separated from the product in sequence, so that when the said ball head 41 of the said slide insert 40 is forced out of the product, the said first slide seat 30 presses against the product, and the product is smoothly demoulded. Therefore, not only is the structure simple, but also the product strong demoulding is achieved, and the product yield is improved.

[0042] See also Figure 7 The cross-sectional area of ​​the second inclined guide hole 31 is greater than the cross-sectional area of ​​the first inclined guide hole 43, and the length of the second inclined guide hole 31 along the X direction is greater than the length of the first inclined guide hole 43 along the X direction. When the mold is opened, the guide member 50 first presses against the inner wall of the first inclined guide hole 43 to push the slide insert 40, and then presses against the inner wall of the second inclined guide hole 31 to push the first slide seat 30.

[0043] See also Figure 1 , Figure 7 and Fig.10 In this embodiment, the guide member 50 includes a shovel base 51 installed on the front template 10 and a guide block 52 installed on the shovel base 51, and the guide block 52 cooperates with the first inclined guide hole 43 and the second inclined guide hole 31.

[0044] The cross section of the guide block 52 is T-shaped. The guide block 52 has a connecting portion 522 connected to the shovel base 51 and an abutting portion 521 vertically connected to the connecting portion 522. The abutting portion 521 extends along the Y direction, and the abutting portion 521 can move in the first oblique guide hole 43 and the second oblique guide hole 31, and is used to abut against the inner wall of the first oblique guide hole 43 and the inner wall of the second oblique guide hole 31.

[0045] More specifically, the cross-sectional area of ​​the first inclined guide hole 43 is greater than the cross-sectional area of ​​the abutment top 521 , and the length of the first inclined guide hole 43 along the X-direction is greater than the length of the abutment top 521 along the X-direction, to ensure that the abutment top 521 can move smoothly in the first inclined guide hole 43 and the second inclined guide hole 31 .

[0046] See also Figure 7-Figure 9 The slider insert 40 is provided with a first connecting groove 44 communicating with the first oblique guide hole 43 corresponding to the connecting portion 522, and the first slider seat 30 is provided with a second connecting groove 32 communicating with the second oblique guide hole 31 corresponding to the connecting portion 522, and the first connecting groove 44 is connected to the second connecting groove 32. When the mold is opened or closed, the guide member 50 is displaced along the Z direction, and the connecting portion 522 of the guide block 52 is displaced along the Z direction in the first connecting groove 44 and the second connecting groove 32.

[0047] Furthermore, the distance between the two opposite inner walls of the first connecting groove 44 and the distance between the two opposite inner walls of the second connecting groove 32 are respectively greater than the length of the connecting portion 522 along the Y direction to ensure that the connecting portion 522 can be smoothly displaced in the first connecting groove 44 and the second connecting groove 32.

[0048] See also Figure 6 , Figure 8 , Fig. 9 and Fig.12 The slide insert 40 also has a transmission part 42 connected to the ball head part 41, the first inclined guide hole 43 is arranged on the transmission part 42 and passes through the upper and lower surfaces of the transmission part 42, the first connecting groove 44 is opened on the end of the transmission part 42 away from the ball head part 41, and the first connecting groove 44 is connected to the first inclined guide hole 43; when the mold is opened, the guide member 50 drives the ball head part 41 to move by pressing against the transmission part 42.

[0049] Since the ball head 41 has a large wear and tear, the ball head 41 is connected to the transmission part 42 by a latch. This arrangement facilitates the replacement of the more vulnerable ball head 41 by the slide insert 40, thereby reducing the maintenance cost of the mold and extending the life of the mold.

[0050] More specifically, the first slide seat 30 is provided with a movable hole 33 corresponding to the slide insert 40 . The movable hole 33 , the second inclined guide hole 31 , and the second connecting groove 32 are connected to each other. The slide insert 40 can slide in the movable hole 33 .

[0051] See also Figure 2 , Figure 3 , Figure 8 , Fig. 9 and Fig.11 The first slide seat 30 is provided with a first inclined surface 34, the transmission part 42 of the slide insert 40 is provided with a second inclined surface 421 at one end away from the ball head 41, and the shovel base 51 is provided with a first inclined guide surface 511 and a second inclined guide surface 512 corresponding to the first inclined surface 34 and the second inclined surface 421 respectively.

[0052] Furthermore, the inclinations of the first inclined guide hole 43, the second inclined guide hole 31, the first inclined surface 34, the second inclined surface 421, the first inclined guide surface 511, and the second inclined guide surface 512 are all kept consistent to ensure that the injection mold with the strong release structure can operate smoothly during mold opening and mold closing.

[0053] When the injection mold with the strong release structure is closed:

[0054] See also Fig.13 , the front template 10 drives the shovel base 51 to move downward, and the first inclined guide surface 511 abuts against the first inclined surface 34 to push the first row seat 30 to move inward, until the first inclined guide surface 511 is separated from the first inclined surface 34, and the first row seat 30 stops moving;

[0055] See also Fig.14 , the shovel base 51 continues to move downward, the second inclined guide surface 512 abuts against the second inclined surface 421 to push the transmission part 42 to drive the ball head 41 to move inward, until the second inclined guide surface 512 is separated from the second inclined surface 421, and the slide insert 40 stops moving;

[0056] See also Figure 1 , the mold is closed, the first slide seat 30 and the slide insert 40 are moved to the predetermined position, the front template 10 stops moving, and the first slide seat 30, the slide insert 40, the give way insert 60, the front template 10, and the rear template 20 together form the cavity 100.

[0057] When the injection mold with a strong release structure is opened:

[0058] See also Figure 2, the front template 10 drives the shovel base 51 to move upward, and the abutting top portion 521 of the guide block 52 abuts against the inner wall of the first inclined guide hole 43 of the slide insert 40 to push the transmission portion 42 to drive the ball head 41 to move outward, and at this time, the second inclined surface 421 and the second inclined guide surface 512 are in the same plane; until the abutting top portion 521 abuts against the inner wall of the second inclined guide hole 31 of the first slide seat 30, the slide insert 40 stops moving;

[0059] See also Figure 3 , the shovel base 51 continues to move upward, and the abutting top portion 521 of the guide block 52 abuts against the inner wall of the second inclined guide hole 31 to push the first row seat 30 to move outward, at which time the first inclined surface 34 and the first inclined guide surface 511 are in the same plane; until the abutting top portion 521 is separated from the second inclined guide hole 31, the first row seat 30 stops moving;

[0060] See also Fig.12 , complete the mold opening.

[0061] See also Figure 4 and Figure 5 A second row seat 70 is slidably provided on the rear template 20, and the giving way insert 60 is connected to the second row seat 70; when the mold is opened, the second row seat 70 drives the giving way insert 60 away from the product to make room for the product to deform, thereby avoiding damage to the product during the forced release process and improving the product yield.

[0062] The second row seat 70 is provided with a third oblique guide hole 71 , and the front template 10 is provided with an oblique guide post 80 corresponding to the third oblique guide hole 71 .

[0063] When the mold is opened, the front template 10 cooperates with the third oblique guide hole 71 through the oblique guide column 80 to drive the second row seat 70 to move outward, so that the clearance insert 60 is away from the product.

[0064] When the mold is closed, the front template 10 cooperates with the third inclined guide hole 71 through the inclined guide column 80 to drive the second row seat 70 to move inward, so that the clearance insert 60 moves inward and together with the first row seat 30, the row insert 40, the front template 10, and the rear template 20 to form the cavity 100.

[0065] Embodiment 2:

[0066] An injection mold with a strong release structure, whose structure is similar to that of the injection mold with a strong release structure in Example 1, except that:

[0067] See also Fig.15One end of the displacing insert 60 is connected to a driving device 90 , and the driving device 90 drives the displacing insert 60 to move on the rear template 20 .

[0068] When the mold is opened, the driving device 90 drives the making way insert 60 to move outwards so as to keep the making way insert 60 away from the product.

[0069] When the mold is closed, the driving device 90 drives the clearance insert 60 to move inward, so that the clearance insert 60 moves inward and together with the first slide seat 30, the slide insert 40, the front template 10, and the rear template 20, forms the mold cavity 100.

[0070] The utility model has the beneficial effects of an injection mold with a strong demoulding structure: not only the structure is simple, but also strong demoulding of products is achieved, and the product yield is improved.

[0071] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An injection mold with a strong release structure, comprising a front template and a rear template, wherein a cavity for molding a product is provided between the front template and the rear template, characterized in that: The rear template is slidably provided with a first row seat, and the first row seat is movably provided with a row insert along the movement direction of the first row seat, and the row insert has a ball head, and the ball head protrudes from the cavity, and a first oblique guide hole penetrating through the upper and lower surfaces of the row insert is provided at one end of the row insert away from the ball head, and a second oblique guide hole connected to the first oblique guide hole is provided through the upper and lower surfaces of the first row seat, and a guide member is installed on the front template, and the guide member cooperates with the first oblique guide hole and the second oblique guide hole, and the guide member is used to sequentially push the first row seat and the row insert, and a yielding insert is movably provided on the rear template, and the yielding insert covers at least a part of the ball head; The front template, the rear template, the first slide seat, the slide insert, and the clearance insert together form the mold cavity; When the mold is opened, the yield insert moves in the direction away from the ball head of the slide insert, and at the same time, the guide member sequentially pushes the slide insert and the first slide seat to move in the direction away from the product, thereby completing product demoulding.

2. The injection mold with a strong release structure according to claim 1, characterized in that: A cross-sectional area of ​​the second oblique guide hole is greater than a cross-sectional area of ​​the first oblique guide hole, and a length of the second oblique guide hole along the X direction is greater than a length of the first oblique guide hole along the X direction.

3. The injection mold with a strong release structure according to claim 1, characterized in that: The guide member comprises a shovel base installed on the front template and a guide block installed on the shovel base, and the guide block matches the first oblique guide hole and the second oblique guide hole.

4. The injection mold with a strong release structure according to claim 3, characterized in that: The guide block has a T-shaped cross-section, and comprises a connecting portion connected to the shovel base and an abutting top portion vertically connected to the connecting portion, the abutting top portion extending along the Y direction, the abutting top portion being movable in the first inclined guide hole and the second inclined guide hole, and being used to abut against the inner wall of the first inclined guide hole and the inner wall of the second inclined guide hole.

5. The injection mold with a strong release structure according to claim 4, characterized in that: The slide insert corresponds to the connecting part and is provided with a first connecting groove connected with the first inclined guide hole. The first slide seat corresponds to the connecting part and is provided with a second connecting groove connected with the second inclined guide hole. The first connecting groove is connected with the second connecting groove. The distance between the two opposite inner walls of the first connecting groove and the distance between the two opposite inner walls of the second connecting groove are respectively greater than the length of the connecting part along the Y direction.

6. The injection mold with a strong release structure according to claim 5, characterized in that: The slide insert also has a transmission part connected to the ball head part, the first inclined guide hole is arranged on the transmission part and passes through the upper and lower surfaces of the transmission part, the first connecting groove is opened on one end of the transmission part away from the ball head part, and the first connecting groove is connected to the first inclined guide hole.

7. The injection mold with a strong release structure according to claim 6, characterized in that: The first slide seat is provided with a first inclined surface, the transmission part of the slide insert is provided with a second inclined surface at one end away from the ball head, and the shovel base is provided with a first inclined guide surface and a second inclined guide surface corresponding to the first inclined surface and the second inclined surface respectively; when the mold is closed, the first inclined guide surface presses against the first inclined surface to push the first slide seat to move inward, and the second inclined guide surface presses against the second inclined surface to push the transmission part to drive the ball head to move inward.

8. The injection mold with a strong release structure according to claim 1, characterized in that: A second row seat is slidably arranged on the rear template, and the giving way insert is connected to the second row seat; when the mold is opened, the second row seat drives the giving way insert to move away from the product.

9. The injection mold with a strong release structure according to claim 8, characterized in that: The second row seat is provided with a third oblique guide hole, and the front template is provided with an oblique guide column corresponding to the third oblique guide hole; when the mold is opened, the front template cooperates with the third oblique guide hole through the oblique guide column to drive the second row seat away from the product.

10. The injection mold with a strong release structure according to claim 1, characterized in that: One end of the displacing insert is connected to a driving device, and the driving device drives the displacing insert to move on the rear template.

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