An injection mold sleeve and an injection molding machine

Abstract

The present invention discloses an injection mold sleeve and an injection molding machine, which are applied to the injection molding process. The injection mold sleeve includes: a base, a mold base, and a limiting structure. The base is arranged on the mold, the mold base is fixedly arranged on the base through a mounting hole, and a plurality of die holes are formed in the mold base for installing metal fittings. The limiting structure is arranged on the mold base and partially extends into the die holes. The limiting structure rotates to conduct or block the die holes. When the limiting structure blocks the die holes, the metal fittings are located in the die holes and above the limiting structure. The ejector pin presses down, so that the limiting structure rotates to conduct the die holes, enabling the metal fittings to fall into the injection cavity of the mold for injection molding. The injection mold sleeve proposed by the present invention forms a matching relationship with the mold. Through the positioning connection between the injection mold sleeve and the mold, the metal fittings can be accurately installed into the injection cavity of the mold, improving the injection molding effect.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding process equipment, and particularly relates to an injection mold sleeve and an injection molding machine. Background Art

[0002] When injecting the metal fittings of connector products, the metal fittings are usually installed manually, and injection molding is carried out. The operation mode of manual picking and blanking is adopted. The manual blanking method leads to too low work efficiency, and in the process of picking and blanking, due to human factors, it is easy to have the situation of material shortage or misalignment of the installed metal fittings, which affects the quality of the finished product. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the metal fittings are prone to misalignment when the metal fittings are manually loaded in the prior art for injection molding, so as to provide an injection mold sleeve and an injection molding machine suitable for positioning and installing the metal fittings.

[0004] To solve the above technical problem, the technical solution of the present invention is as follows:

[0005] An injection mold sleeve is applied to the injection molding process, and includes: a base, a mold base and a limiting structure; the base is arranged on the mold; the mold base is arranged on the base, and the mold base is provided with a mold hole suitable for installing metal fittings from top to bottom, and the mold hole penetrates through the upper and lower surfaces of the mold base to communicate with the injection cavity of the mold; the limiting structure is arranged on the mold base and partially extends into the mold hole, and the limiting structure rotates to conduct or block the mold hole.

[0006] According to some embodiments of the present invention, a guiding chamfer is provided at the upper end of the mold hole.

[0007] According to some embodiments of the present invention, a plurality of limiting protrusions are provided in the mold hole to be suitable for positioning and installing the metal fittings.

[0008] According to some embodiments of the present invention, the mold base is provided with a plurality of avoidance holes communicating with the mold hole from top to bottom. The ejector pin presses down and extends into the avoidance holes and the mold hole. The ejector pin is in interference fit with the mold hole to extrude the metal fittings into the injection cavity.

[0009] According to some embodiments of the present invention, the mold base includes a connected upper mounting table and a lower mounting table. The upper mounting table and the lower mounting table are arranged in a stepped surface. The lower end surface of the upper mounting table abuts against the upper end surface of the base. The base is provided with a mounting hole, and the lower mounting table extends into the mounting hole. The mold hole penetrates through the upper mounting table and the lower mounting table.

[0010] According to some embodiments of the present invention, a connecting part is provided at the lower end surface of the lower mounting table, and the connecting part is suitable for being clamped with the mold.

[0011] According to some embodiments of the present invention, the limiting structure includes a limiting member and a locking member. One end of the limiting member extends into the shaped hole to be adapted to conduct or block the shaped hole, and the locking member is inserted through the other end of the limiting member and fixedly connected to the mold base.

[0012] According to some embodiments of the present invention, the limiting member includes a connected fixing portion and a deflecting portion. A bend facing away from the shaped hole is formed at the connection between the fixing portion and the deflecting portion. The deflecting portion has an in-situ state of blocking the shaped hole and a deflected state of conducting the shaped hole.

[0013] According to some embodiments of the present invention, the cross-section of the base is rectangular, and there are multiple mold bases. The multiple mold bases are symmetrically distributed with the midpoint of the base as the symmetry point.

[0014] The present invention also proposes an injection molding machine, including: a workbench, a mold, and a thimble assembly; the mold is arranged on the workbench, and an injection mold sleeve is arranged above the mold; the thimble assembly includes a lifting module arranged on the workbench and a thimble module slidably arranged on the lifting module. The lifting module drives the thimble module to reciprocate in the vertical direction to push the fitting in the injection mold sleeve into the injection cavity of the mold.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. For the injection mold sleeve provided by the present invention, the base is arranged on the mold, the mold base is fixed on the base, several shaped holes are opened on the mold base to install the fitting, the limiting structure is arranged on the mold base and partially extends into the shaped hole, and the limiting structure rotates to conduct or block the shaped hole. When the limiting structure blocks the shaped hole, the fitting is located in the shaped hole and above the limiting structure. The thimble presses down, so that the limiting structure rotates to conduct the shaped hole, and the fitting falls into the injection cavity of the mold for injection molding. The injection mold sleeve proposed by the present invention forms a matching relationship with the mold. Through the positioning connection of the injection mold sleeve and the mold, the fitting can be accurately installed into the injection cavity of the mold, improving the injection molding effect.

[0017] 2. For the injection mold sleeve provided by the present invention, a guiding chamfer is arranged at the upper end of the shaped hole, which is convenient for installing the fitting in the shaped hole and also convenient for the thimble to press down, so as to improve the injection molding efficiency.

[0018] 3. For the injection mold sleeve provided by the present invention, several limiting protrusions are arranged in the shaped hole to be adapted to position and install the fitting, so that after the thimble presses down, the fitting can be accurately installed into the injection cavity of the mold, improving the injection molding quality.

[0019] 4. The injection molding machine provided by the present invention is provided with an injection molding sleeve above the mold. Through the mutual cooperation of the injection molding sleeve and the mold, the mold holes of the injection molding sleeve are communicated with the injection cavities of the mold. The mold holes of the injection molding sleeve are used for positioning and installing the metal fittings. The lifting module drives the thimble module to reciprocate in the vertical direction, so as to accurately push the metal fittings into the injection cavities of the mold for injection molding, thereby improving the injection molding quality and efficiency. Brief Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the front view of the injection molding sleeve provided in some embodiments of the present invention;

[0022] Figure 2 It is Figure 1 the partial schematic view of part A of

[0023] Figure 3 It is the structural schematic view of the mold base provided in some embodiments of the present invention;

[0024] Figure 4 It is the structural schematic view of the base provided in some embodiments of the present invention;

[0025] Figure 5 It is the half-sectional schematic view of the mold base provided in some embodiments of the present invention;

[0026] Figure 6 It is the structural schematic view of the limiting structure provided in some embodiments of the present invention.

[0027] Explanation of the reference numerals in the drawings: 1, base; 2, mold base; 3, limiting structure; 11, mounting hole; 21, mold hole; 22, avoidance hole; 23, upper mounting table; 24, lower mounting table; 25, connecting part; 31, locking part; 32, limiting part; 211, guiding chamfer; 212, limiting protrusion; 321, fixing part; 322, yawing part. Detailed Embodiments

[0028] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 thus cannot be construed as a limitation on the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Referring to Figures 1 to 6 As shown, the present invention provides an injection mold sleeve, which is applied to the injection molding process and includes: a base 1, a mold base 2, and a limiting structure 3; the base 1 is provided on the mold; the mold base 2 is disposed on the base 1, and the mold base 2 is provided with a mold hole 21 adapted to install a fitting from top to bottom, and the mold hole 21 penetrates through the upper and lower surfaces of the mold base 2 to communicate with the injection cavity of the mold; the limiting structure 3 is disposed on the mold base 2 and partially extends into the mold hole 21, and the limiting structure 3 rotates to conduct or block the mold hole 21.

[0033] Specifically, the base 1 is provided on the mold. The base 1 provides an installation foundation for the mold base 2, and the mold base 2 is fixed on the base 1. A plurality of mold holes 21 are provided on the mold base 2 to install fittings. The limiting structure 3 is disposed on the mold base 2 and partially extends into the mold hole 21. The limiting structure 3 rotates to conduct or block the mold hole 21. When the limiting structure 3 blocks the mold hole 21, the fitting is located in the mold hole 21 and above the limiting structure 3. The ejector pin presses down, causing the limiting structure 3 to rotate, so as to conduct the mold hole 21, allowing the fitting to fall into the injection cavity of the mold for injection molding. The injection mold sleeve proposed by the present invention forms a matching relationship with the mold. Through the positioning connection between the injection mold sleeve and the mold, the fitting can be accurately installed into the injection cavity of the mold, improving the injection molding effect.

[0034] Referring to Figure 1 and Figure 2As shown, it can be understood that the number of the shaped holes 21 is multiple, and the multiple shaped holes 21 are staggeredly distributed to achieve the positioning and installation of multiple fittings. The number of the limiting structures 3 is consistent with the number of the shaped holes 21, so that the shaped hole 21 corresponding to a single limiting structure 3 realizes the conduction and blocking of the shaped hole 21.

[0035] Referring to Figure 2 As shown, in some embodiments of the present invention, a guiding chamfer 211 is provided at the upper end of the shaped hole 21. Specifically, the setting of the guiding chamfer 211 facilitates the placement of the fitting, and at the same time facilitates the better entry of the ejector pin into the shaped hole 21 when the ejector pin presses down to push the fitting, so that the fitting falls into the injection cavity of the mold.

[0036] Referring to Figure 2 As shown, in some embodiments of the present invention, a plurality of limiting protrusions 212 are provided in the shaped hole 21 to be suitable for the positioning and installation of the fitting. Specifically, the limiting protrusions 212 position the fitting, so that the fitting is installed in the mold base 2 in a fixed posture, and to prevent the fitting from moving during the pressing process of the ejector pin, thereby affecting the injection quality.

[0037] Referring to Figure 2 As shown, in some embodiments of the present invention, the mold base 2 is provided with a plurality of avoiding holes 22 communicating with the shaped holes 21 from top to bottom. The ejector pin presses down and extends into the avoiding holes 22 and the shaped holes 21. The ejector pin is in interference fit with the shaped hole 21 to squeeze the fitting into the injection cavity.

[0038] Specifically, the ejector pin is in interference fit with the shaped hole 21 to push the fitting, so that the fitting enters the injection cavity. In order to avoid interference between the ejector pin and the mold base 2, avoiding holes 22 are provided on the mold base 2. The aperture of the avoiding holes 22 is larger than the maximum diameter of the shaped hole 21, so as to form an avoiding space. The avoiding holes 22 and the shaped holes 21 overlap, so that when the ejector pin enters the avoiding holes 22 and the shaped holes 21, although it is in interference fit with the shaped hole 21, it can smoothly enter from the avoiding holes 22 and will not interfere with the mold base 2.

[0039] Referring to Figures 3 to 5 As shown, in some embodiments of the present invention, the mold base 2 includes a connected upper mounting table 23 and a lower mounting table 24. The upper mounting table 23 and the lower mounting table 24 are arranged as a stepped surface. The lower end surface of the upper mounting table 23 abuts against the upper end surface of the base 1. The base 1 is provided with a mounting hole 11. The lower mounting table 24 extends into the mounting hole 11. The shaped hole 21 penetrates through the upper mounting table 23 and the lower mounting table 24.

[0040] Specifically, a first connection hole is formed in the base 1, and a second connection hole is formed in the upper mounting table 23. A fastener is passed through the first connection hole and the second connection hole to fix the upper mounting table 23 on the base 1, so that the lower end surface of the upper mounting table 23 abuts against the upper end surface of the base 1. Specifically, the fastener is a bolt, and both the first connection hole and the second connection hole are provided with internal threads. The lower mounting table 24 passes through the mounting hole 11, and the shaped hole 21 penetrates through the upper mounting table 23 and the lower mounting table 24. It can be understood that the upper mounting table 23 and the lower mounting table 24 are integrally provided.

[0041] Referring Figure 3 As shown, in some embodiments of the present invention, a connecting portion 25 is provided on the lower end surface of the lower mounting table 24, and the connecting portion 25 is adapted to be clamped with the mold.

[0042] Specifically, the connecting portion 25 is clamped with the mold, so as to realize the alignment connection between the mold base 2 and the mold. The clamping method is convenient for disassembly and assembly, improves the loading and unloading efficiency, and improves the injection molding efficiency.

[0043] Referring Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the limiting structure 3 includes a limiting member 32 and a locking member 31. One end of the limiting member 32 extends into the shaped hole 21 to be adapted to conduct or block the shaped hole 21, and the locking member 31 passes through the other end of the limiting member 32 and is fixedly connected to the mold base 2.

[0044] Specifically, the locking member 31 is used to fix the limiting member 32 on the mold base 2. One end of the limiting member 32 extends into the shaped hole 21 and abuts against the side wall of the shaped hole 21 away from the locking member 31, so as to block the shaped hole 21. When the ejector pin presses down, one end of the limiting member 32 is deflected and abuts against the side wall of the shaped hole 21 close to the locking member 31, so as to conduct the shaped hole 21, and the fitting then falls into the injection cavity.

[0045] Referring Figure 6 As shown, in some embodiments of the present invention, the limiting member 32 includes a connected fixing portion 321 and a deflecting portion 322. A bend facing away from the shaped hole 21 is formed at the connection between the fixing portion 321 and the deflecting portion 322. The deflecting portion 322 has an in-situ state of blocking the shaped hole 21 and a deflected state of conducting the shaped hole 21.

[0046] Specifically, the fixing part 321 and the yawing part 322 are integrally arranged. The fixing part 321 and the yawing part 322 are bent to form a back-facing hole 21. An installation groove communicating with the hole 21 on one side is opened on the upper end surface of the upper installation table 23. The fixing part 321 is fixed in the installation groove by a locking part 31. In the in-situ state, the minimum included angle formed between the yawing part 322 and the fixing part 321 is an obtuse angle. At this time, the bending groove faces away from the hole 21. One end of the yawing part 322 abuts against the side wall of the hole 21 far from the locking part 31, so as to block the hole 21 and prevent the metal fitting from falling; when the yawing part is in a deflected state, the minimum included angle formed between the yawing part 322 and the fixing part 321 is an acute angle or a right angle at this time. The yawing part 322 abuts against the side wall of the hole 21 close to the locking part 31, so as to conduct the hole 21. Under the pushing of the ejector pin, the metal fitting falls into the injection cavity of the lower mold for injection molding.

[0047] It can be understood that the limiting part 32 is used for positioning and supporting the metal fitting to cooperate with the ejector pin to press down the metal fitting for injection molding.

[0048] Refer to Figure 1 and Figure 4 As shown in the figure, in some embodiments of the present invention, the cross-section of the base 1 is rectangular, and there are multiple mold bases 2. The multiple mold bases 2 are symmetrically distributed with the midpoint of the base 1 as the symmetry point.

[0049] Specifically, a plurality of installation holes 11 are opened on the base 1. The number of the installation holes 11 is consistent with the number of the mold bases 2. In some embodiments of the present invention, the cross-section of the base 1 is rectangular, and there are four mold bases 2, and they are symmetrically distributed with the midpoint of the base 1 as the symmetry point, so as to realize the simultaneous injection molding of multiple metal fittings and improve the injection molding efficiency.

[0050] The present invention also proposes an injection molding machine, including: a workbench, a mold and an ejector pin assembly; the mold is arranged on the workbench, and an injection mold sleeve is arranged above the mold; the ejector pin assembly includes a lifting module arranged on the workbench and an ejector pin module slidably arranged on the lifting module. The lifting module drives the ejector pin module to reciprocate in the vertical direction to push the metal fitting in the injection mold sleeve into the injection cavity of the mold.

[0051] Specifically, an injection mold sleeve is arranged above the mold. Through the mutual cooperation of the injection mold sleeve and the mold, the hole 21 of the injection mold sleeve is communicated with the injection cavity of the mold. The hole 21 of the injection mold sleeve is used for positioning and installing the metal fitting. The lifting module drives the ejector pin module to reciprocate in the vertical direction, so as to accurately push the metal fitting into the injection cavity of the mold for injection molding, thereby improving the injection molding quality and efficiency.

[0052] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of this invention.

Claims

1. An injection mold sleeve, used in injection molding process, characterized in that: include: A base (1), the base (1) being arranged on the mold; A mold base (2), the mold base (2) is arranged on the base (1), and the mold base (2) is provided with a mold hole (21) suitable for installing a metal fitting from top to bottom, and the mold hole (21) passes through the upper and lower surfaces of the mold base (2) to communicate with the injection molding cavity of the mold; the upper end of the mold hole (21) is provided with a guide chamfer (211), and the mold hole (21) is provided with a plurality of limiting protrusions (212) to be suitable for positioning and installing the metal fitting; A limiting structure (3), the limiting structure (3) is provided on the mold base (2) and partially extends into the mold hole (21), and the limiting structure (3) rotates to open or block the mold hole (21); The mold base (2) is provided with a plurality of avoidance holes (22) from top to bottom, which are connected with the mold hole (21); the ejector pin is pressed downward and extends into the avoidance hole (22) and the mold hole (21); the ejector pin and the mold hole (21) are interference-fitted to squeeze the metal fitting into the injection cavity.

2. The injection mold sleeve according to claim 1, characterized in that: The mold base (2) includes an upper mounting platform (23) and a lower mounting platform (24) connected to each other. The upper mounting platform (23) and the lower mounting platform (24) are arranged in a stepped surface. The lower end surface of the upper mounting platform (23) abuts against the upper end surface of the base (1). The base (1) is provided with a mounting hole (11). The lower mounting platform (24) extends into the mounting hole (11). The mold hole (21) passes through the upper mounting platform (23) and the lower mounting platform (24).

3. The injection mold sleeve according to claim 2, characterized in that: The lower end surface of the lower mounting platform (24) is provided with a connecting portion (25), and the connecting portion (25) is suitable for clamping with the mold.

4. The injection mold sleeve according to claim 1, characterized in that: The limiting structure (3) comprises a limiting member (32) and a locking member (31), one end of the limiting member (32) extends into the mold hole (21) to be suitable for conducting or blocking the mold hole (21), and the locking member (31) is passed through the other end of the limiting member (32) and is fixedly connected to the mold base (2).

5. The injection mold sleeve according to claim 4, characterized in that: The limiting member (32) comprises a fixed portion (321) and a deflecting portion (322) connected to each other, wherein a bend is formed at the connection between the fixed portion (321) and the deflecting portion (322) facing away from the molded hole (21), and the deflecting portion (322) has an original position state for blocking the molded hole (21) and a deflected state for conducting the molded hole (21).

6. The injection mold sleeve according to claim 1, characterized in that: The cross section of the base (1) is rectangular, and a plurality of the mold bases (2) are provided, and the plurality of mold bases (2) are symmetrically distributed with the midpoint of the base (1) as a symmetrical point.

7. An injection molding machine, characterized in that: include: Workbench: A mold is provided on the workbench, and an injection mold sleeve according to any one of claims 1 to 6 is provided above the mold; The ejector assembly includes a lifting module arranged on the workbench and an ejector module slidably arranged on the lifting module. The lifting module drives the ejector module to reciprocate in the vertical direction to push the metal fittings in the injection mold sleeve into the injection cavity of the mold.

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