Sliding block anti-retreating structure for mold

Abstract

The utility model discloses a sliding block anti-retreating structure for a mold, which relates to the technical field of injection molding, and adopts the technical scheme that the sliding block anti-retreating structure comprises a mold, a sliding block and a sliding block driving piece, the sliding block is connected with the mold in a sliding manner, the sliding block driving piece is linked with the sliding block, and the sliding block anti-retreating structure further comprises a sliding block connecting seat arranged between the sliding block driving piece and the sliding block. The sliding block driving piece is linked with the sliding block through the sliding block connecting seat; the first guide structure is arranged in the mold, and the sliding block moves along the first guide structure; the retaining assembly comprises a retaining block which is arranged on the moving path of the sliding block connecting seat; the retaining block can move towards or away from the sliding block connecting base. The utility model has the beneficial effects that according to the scheme, the retaining block of the retaining assembly is limited on the displacement path of the sliding block connecting seat, so that the problem of sliding block displacement caused by injection molding pressure is effectively prevented. According to the scheme, the structure is simple, and the product quality can be effectively improved only with extremely low mold modification cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field, concretely is a mould is with sliding block prevents the structure of backward movement. BACKGROUND

[0002] Injection molding is one of the commonly used technical means in modern industrialized production, and with the popularization of injection molding technology, corresponding improvement is needed for different product requirements. For example, the product is provided with a slotted structure, and the slot is in the front mold and the reverse buckle, the existing scheme usually needs to be obliquely turned to the corner degree tunnel sliding block to demould, and the sliding block movement is driven by the oil cylinder.

[0003] However, during injection molding, the injection molding machine fills the molten plastic after melting the thermoplastic plastic into the mold cavity, the injection molding pressure is large, which will push the sliding block backward. The existing oil cylinder driven sliding block will easily produce backward movement under the pressure, resulting in the existence of cavity on the product parting surface, causing the product surface to have flash and step difference, and causing the product to have low size qualification rate and poor image. UTILITY MODEL CONTENT

[0004] In view of one of the deficiencies of the prior art, the utility model provides a sliding block anti-backup structure for a mold, which solves the problem of displacement of the product slotted sliding block caused by injection molding pressure during injection molding.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a sliding block anti-backup structure for a mold, comprising a mold, a sliding block and a sliding block driving piece, the sliding block is slidably connected with the mold, the sliding block driving piece and the sliding block are linked, and further comprising:

[0006] A sliding block connecting seat is arranged between the sliding block driving piece and the sliding block, and the sliding block driving piece is linked with the sliding block through the sliding block connecting seat;

[0007] A first guide structure is arranged inside the mold, and the sliding block moves along the first guide structure;

[0008] A backup assembly comprises:

[0009] A backup block is arranged on the moving path of the sliding block connecting seat, and the backup block can move towards or away from the sliding block connecting seat.

[0010] Preferably, the direction in which the mold is opened is the first movement direction, the movement direction of the sliding block connecting seat is the second movement direction, the second movement direction is perpendicular to the first movement direction;

[0011] The guide direction of the first guide structure is the third movement direction, the third movement direction is inclined relative to the first movement direction, one end of the third movement direction is arranged towards the product, and the other end is arranged towards the sliding block driving piece.

[0012] Preferably, the first movement direction is vertical, the second movement direction is horizontal, and the third movement direction has a lower end facing the product and an upper end facing the slider driving element.

[0013] Preferably, the slider driving element is a telescopic cylinder, one side of the slider connecting seat is connected with a movable end of the slider driving element, and the other side is connected with the slider.

[0014] The connecting side of the slider connecting seat and the slider is provided with an inclined slide rail.

[0015] Preferably, the device further comprises:

[0016] A second guide structure is fixedly arranged on the mold, and the slider connecting seat and the second guide structure are in sliding connection.

[0017] Preferably, the retreat-stop assembly further comprises:

[0018] A retaining block is fixedly connected with the mold, and the retreat-stop block and the retaining block are in sliding connection.

[0019] A support structure is arranged on a side of the retreat-stop block away from the slider connecting seat, and the support structure comprises an elastic support.

[0020] Preferably, the device further comprises:

[0021] An intermediate piece is fixedly connected with a movable end of the slider driving element on one side and connected with the slider connecting seat on the other side.

[0022] Preferably, the retreat-stop assembly further comprises:

[0023] A striker is fixedly connected with the intermediate piece.

[0024] A side of the striker facing the retreat-stop block is an inclined surface.

[0025] Preferably, the slide rail is arranged in a middle part of the slider connecting seat.

[0026] The slider comprises:

[0027] A slider body is a block, and a profiling structure is arranged on a side of the slider body corresponding to a slotted part of the product.

[0028] A time-delay self-locking structure is arranged between the slider body and the slider connecting seat.

[0029] Preferably, the time-delay self-locking structure comprises:

[0030] A limiting part is arranged on one side or symmetrically on both sides of the slide rail.

[0031] The first fitting part is arranged on the slider body and corresponds to the slide rail, and the first fitting part and the slide rail are in sliding connection.

[0032] The second fitting part is arranged on one side or both sides of the first fitting part, and the second fitting part and the limiting part of the slider connecting seat are arranged correspondingly; when the mold is closed, the second fitting part is in contact with the limiting part.

[0033] Compared with the prior art, the present application has the following beneficial effects: the retreat stop block of the retreat stop assembly limits the displacement path of the slider connecting seat, effectively preventing the displacement of the slider caused by the injection pressure. The present application has a simple structure, only a small mold modification cost is required, and the product quality can be effectively improved.

[0034] In addition, the present application also provides a time delay self-locking structure, which can improve the anti-backup effect of the slider and reduce the possibility of wire drawing deformation of the product. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The figure is a schematic diagram of the injection molded product of the embodiment of the present application;

[0036] Figure 2 The figure is a schematic diagram of the overall structure of the embodiment of the present application;

[0037] Figure 3 The figure is a schematic diagram of the internal structure of the embodiment of the present application;

[0038] Figure 4 The figure is a front view of the internal structure of the embodiment of the present application;

[0039] Figure 5 The figure is a top view of the internal structure of the embodiment of the present application;

[0040] Figure 6 The figure is a A-A sectional view of the embodiment of the present application; Figure 5

[0041] The figure is a A-A sectional view of the embodiment of the present application; Figure 7 Figure 6 The figure is a A-A sectional view of the embodiment of the present application;

[0042] Figure 8 The figure is a A-A sectional view of the embodiment of the present application;

[0043] Figure 9 The figure is a A-A sectional view of the embodiment of the present application;

[0044] Figure 10 The figure is a A-A sectional view of the embodiment of the present application;

[0045] In the figure:

[0046] ​100, product; 101, product slot;

[0047] 1, slider; 11, slider body; 12, first fitting part; 13, second fitting part; 2, slider driving part; 3, slider connecting seat; 31, slide rail; 32, limiting part; 4, second guide structure; 5, retreat stopping assembly; 51, retreat stopping block; 52, retaining block; 53, supporting structure; 6, intermediate piece. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] Please refer to Figure 1 , Figure 1 That is, the product shown in this scheme needs to be formed by using a slider structure at the product slot 101. The present application provides the following technical solutions:

[0050] A slider retreat preventing structure for a mold, referring to Figures 2 to 7 , comprises a mold 10, a slider 1 and a slider driving part 2. The mold 10 mentioned here can be a front mold or a rear mold, which can be selected and used according to actual conditions. In the embodiments of the present application, the mold 10 is a front mold. A sliding groove is arranged inside the mold 10 as a first guide structure. The slider 1 is slidably connected with the mold 10 through the first guide structure. A slider driving part 2 is arranged on one side of the mold. The slider driving part 2 can be a pneumatic, hydraulic or electric cylinder. In the present application, a hydraulic oil cylinder is used. A slider connecting seat 3 is arranged between the slider 1 and the slider driving part 2. The slider connecting seat 3 is fixedly connected with the movable end of the slider driving part 2. The opening and closing direction of the mold in the present application is vertical, and the movable direction of the piston rod of the slider driving part 2 is horizontal.

[0051] The slider 1 comprises a slider body 11, which is an inclined block structure. The lower end of the slider body 11 is a profiling structure corresponding to the product slot 101 of the product 100. The upper end of the slider body 11 is inclined towards the direction of the slider driving part 2. The first guide structure is a through sliding channel corresponding to the inclined direction of the slider 1. Figure 8 and Figure 9As shown, the slider connecting seat 3 is provided with an inclined slide rail 31 on the side away from the slider driving member 2, the slider connecting seat 3 is slidably connected with the slider 1 through the slide rail 31, and the slide rail 31 is also provided in an inclined manner, and the inclined direction thereof is opposite to that of the slider 1. A retreat-stopping assembly 5 is arranged between the slider connecting seat 3 and the slider driving member 2, and the retreat-stopping assembly 5 comprises a retreat-stopping block 51 arranged on the moving path of the slider connecting seat 3; the retreat-stopping block 51 is movable towards or away from the slider connecting seat 3.

[0052] For the convenience of description, the direction shown in Figure 4 and Figure 6 is taken as an example, through the structure of the present solution, when the injection molding is completed, the piston rod of the slider driving member 2 is retracted, and the slider connecting seat 3 moves to the left side following the action of the slider driving member 2, in this process, the slider 1 slides along the direction of the slide rail 31, and at the same time, moves along the direction not given in the first guide structure, and finally presents that the slider 1 is drawn away from the slotted 101 of the product 100 in the upper left direction in the drawing. Unlike the prior art solution, in the closed mold state, that is, when the product is ready for injection molding, at this time, the slider connecting seat 3 moves to the right side in the drawing under the pushing of the slider driving member 2, the slider 1 extends into the corresponding position of the slotted 101 of the product 100, that is, the state shown in Figure 6 . As shown in Figure 7 , at this time, the retreat-stopping block 51 is located at the upper end position, and can be limited from the side of the slider connecting seat 3 towards the slider driving member 2, so as to avoid the problem that the slider 1 is pushed by the pressure generated in the injection molding process under the non-pressing state of the slider driving member 2.

[0053] On the basis of the above-mentioned embodiment, in order to ensure the stability of the slider connecting seat 3 in the movement process, the present solution further comprises a second guide structure 4, which is fixedly arranged on the mold 10, and the slider connecting seat 3 and the second guide structure 4 are slidably connected. Referring to Figures 3 to 5 , the second guide structure 4 comprises a plate body group located on both sides of the slider connecting seat 3, each plate body group comprises at least two upper and lower plate bodies, and a slide channel is formed between the two plate bodies and slidably connected with the edge of the slider connecting seat 3. In addition, a limiting plate is arranged on the upper side of the slider connecting seat 3, which guides and limits the upper surface of the slider connecting seat 3.

[0054] On the basis of the above-mentioned embodiment, referring to Figure 4 , Figure 6 and Figure 7The retreat-stop assembly 5 further comprises a retaining block 52 fixedly connected with the mold 10. A through hole is formed in the middle of the retaining block 52, and the retreat-stop block 51 is arranged in the through hole and is in sliding connection with the retaining block 52. A support structure 53 is arranged on the side of the retreat-stop block 51 away from the slider connecting seat 3. The support structure 53 comprises a vertical column fixedly arranged at the lower end of the retreat-stop block 51, and one or two springs are arranged around the vertical column.

[0055] On the basis of the above-mentioned embodiment, the movable end of the slider driving member 2 is connected with the intermediate piece 6 and the slider connecting seat 3. That is, the movable end of the slider driving member 2 is fixedly connected with one side of the intermediate piece 6, and the other side of the intermediate piece 6 is fixedly connected with the slider connecting seat 3. The retreat-stop assembly 5 further comprises a striker 54 fixedly arranged at the lower side of the intermediate piece 6, and the two are connected by bolts. The lower sides of the striker 54 are inclined surfaces, and the upper end of the retreat-stop block 52 is provided with an arc surface. For the convenience of description, the side of the striker 54 facing the slider connecting seat 3 is referred to as side a, and the opposite side is referred to as side b. The inclination of side a is smaller than that of side b.

[0056] During mold clamping, the piston rod of the slider driving member 2 moves, the intermediate piece 6 drives the striker 54 to move, and the striker 54 presses down the retreat-stop block 51 during the movement. The power of the hydraulic cylinder is sufficient to overcome the elastic force of the spring in the support structure 53. When the mold clamping is completed, side b of the striker 54 and the side of the retreat-stop block 51 facing the slider connecting seat 3 are attached to each other. Under the limiting action of the retreat-stop block 51, the pushing force of the material during injection molding is overcome. After the injection molding is completed, the intermediate piece 6 moves to the left direction under the drive of the slider driving member 2, the striker 54 again presses down the retreat-stop block 51, the slider connecting seat 3 can move to the left direction, and the slider 1 is separated from the product 100. Figure 7

[0057] On the basis of the above-mentioned embodiment, referring to Figures 8 to 10 , the slide rail 31 is arranged in the middle of the slider connecting seat 3, and a time-delay self-locking structure is arranged between the slider main body 11 and the slider connecting seat 3. The time-delay self-locking structure comprises limiting portions 32 arranged on the symmetrical two sides of the slide rail 31. The limiting portions 32 are inclined surfaces in the general direction, and specifically comprise two inclined surfaces and a horizontal surface between the two inclined surfaces. A second abutting portion 13 is arranged on the slider main body 11 corresponding to the limiting portions 32. The second abutting portion 13 also comprises two inclined surfaces and a horizontal surface between the inclined surfaces. Figure 9 As shown, the limiting portions 32 and the second abutting portion 13 are in the combined state of the mold clamping state. At this time, the second abutting portion 13 is attached to the limiting portions 32.

[0058] ​The slide rail 31 is approximately in the shape of "丄". A first fitting portion 12 is provided at the upper end of the slider 1. The first fitting portion 12 is a "convex"-shaped through groove provided corresponding to the slide rail 31, and the first fitting portion 12 is slidably connected to the slide rail 31; the second fitting portions 13 are located on the symmetric two sides of the first fitting portion 12. It should be noted here that the thickness of the bottom plate body of the slide rail 31 needs to be less than the height of the groove opened at the lower part of the first fitting portion. In Figure 9 the shown state, the bottom surface of the through groove of the first fitting portion 12 is in contact with the bottom surface of the slide rail 31. When the slider connecting seat 3 moves to the left, in the initial short period of time, the slider 1 does not move. It is not until the limiting portion 32 and the horizontal surface of the second fitting portion 13 are错开 (the specific word for this "错开" is not clear in the context, it might be a misspelling or a very specific technical term. Assuming it means "错开" as in "错开位置" for now) that at this time, the bottom surface of the through groove of the first fitting portion 12 is separated from the bottom surface of the slide rail 31, and the upper surface of the through groove is in contact with the upper surface of the bottom plate of the slide rail 31. And the inclined surface on the upper part of the limiting portion 32 is in contact with the inclined surface on the lower part of the second fitting portion 13. As the slider connecting seat 3 continues to move leftward, the slider 1 is driven to be withdrawn from the product 100.

[0059] The advantage of this structure is that in the mold closing state, due to the contact form of the second fitting portion 13 with the slide rail 31 and the limiting portion 32, the slider 1 forms a self-locking structure, and the pressure generated during injection molding is dispersed at various positions below the slider connecting seat 3, making it extremely difficult for the slider 1 to displace. And during mold opening, because there is a time delay period, the position where the slider 1 contacts the product can be slightly cooled, reducing the possible wire drawing problem when the slider 1 is withdrawn.

[0060] Based on the above implementation, refer to Figure 4 and Figure 5 , a cross bar is provided on the side of the slider connecting seat 3 facing the slider driving member 2. Two bumps are fixedly provided on the cross bar, and two sensors are respectively provided on the displacement paths of the two bumps. The displacement position of the slider connecting seat 3 can be fed back according to the bumps pushing the corresponding sensors.

[0061] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present application.

[0062] In the present application and embodiments thereof, unless specifically defined otherwise, the terms "set", "mounted", "connected", "linked", "fixed" and the like are to be construed broadly in accordance with the principles of the application, for example, can be fixed connections, or can be detachable connections, or can be integral; can be mechanical connections, or can be electrical connections, or can be communication; can be direct connections, or can be indirect connections through intermediate media, or can be the internal communication or interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0063] In the present application and embodiments thereof, unless specifically defined otherwise, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0064] The above disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described in the above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0065] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0066] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A mold with a slide anti-retraction structure, comprising a mold, a slide and a slide driving member, the slide is slidingly connected with the mold, the slide driving member and the slide are linked, characterized in that, Also comprising: A slider connecting seat is arranged between the slider driving element and the slider, and the slider driving element is connected with the slider through the slider connecting seat; A first guide structure is arranged inside the mold, and the slider moves along the first guide structure; A retreat stopping assembly comprises: A retreat stopping block is arranged on the moving path of the slider connecting seat; The retreat stopping block can move towards or away from the slider connecting seat.

2. The mold slide retreat prevention structure according to claim 1, wherein The direction in which the mold is opened is the first movement direction, the movement direction of the slider connecting seat is the second movement direction, and the second movement direction is perpendicular to the first movement direction; The guide direction of the first guide structure is the third movement direction, and the third movement direction is arranged obliquely relative to the first movement direction, one end of the third movement direction is arranged towards the product, and the other end is arranged towards the slider driving element.

3. The mold slide retreat prevention structure according to claim 2, wherein The first movement direction is the vertical direction, the second movement direction is the horizontal direction, and the lower end of the third movement direction is arranged towards the product, and the upper end is arranged towards the slider driving element.

4. The mold slide retreat prevention structure of Claim 1, wherein The slider driving element is a telescopic cylinder, one side of the slider connecting seat is connected with the movable end of the slider driving element, and the other side is slidingly connected with the slider; The connecting side of the slider connecting seat and the slider is provided with an inclined slide rail.

5. The mold slide retreat prevention structure of Claim 1, wherein Also comprising: A second guide structure is fixedly arranged on the mold, and the slider connecting seat is slidingly connected with the second guide structure.

6. The mold slide retreat prevention structure of Claim 5, wherein The retreat stopping assembly further comprises: A retaining block is fixedly connected with the mold, and the retreat stopping block is slidingly connected with the retaining block; A support structure is arranged on the side of the retreat stopping block away from the slider connecting seat, and the support structure comprises an elastic support element.

7. The mold slide retreat prevention structure of Claim 6, wherein Also comprising: An intermediate element is fixedly connected with the movable end of the slider driving element on one side and connected with the slider connecting seat on the other side.

8. The mold slide retreat prevention structure of Claim 7, wherein The retreat stopping assembly further comprises: A striker is fixedly connected with the intermediate element; The side surface of the striker towards the retreat stopping block is an inclined surface.

9. The mold slide retreat prevention structure of Claim 4, wherein The slide rail is arranged in the middle of the slider connecting seat; The slider comprises: A slider main body is a block body, and a profiling structure is arranged on one side of the slider main body corresponding to the slotted part of the product; A time delay self-locking structure is arranged between the slider main body and the slider connecting seat.

10. The mold slide retreat prevention structure of Claim 9, wherein The time delay self-locking structure comprises: A limiting part is arranged on one side or symmetrically on both sides of the slide rail; A first abutting part is arranged on the slider main body, and the first abutting part is arranged corresponding to the slide rail and slidingly connected with the slide rail; A second abutting part is arranged on one side or symmetrically on both sides of the first abutting part, and the second abutting part is arranged corresponding to the limiting part of the slider connecting seat; when the mold is closed, the second abutting part is abutted with the limiting part.

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