Molding assembly and injection mold

Abstract

The utility model provides a molding assembly and an injection mold, the molding assembly comprises a first module, a second module and a third module, the first module comprises a first mold core, and a first molding groove is formed in one side of the first mold core; the second module comprises a second mold core slidably assembled on the side, provided with the first forming groove, of the first mold core, and a second forming groove is formed in the side, close to the first mold core, of the second mold core; and the first blocking pieces are arranged on the side, close to the second mold core, of the first mold core, the number of the first blocking pieces is two, and the two first blocking pieces are arranged at the two ends of the first forming groove correspondingly. As the first blocking pieces sleeve the outer side of the tubular terminal, and the two first blocking pieces are respectively arranged at the two ends of the forming cavity, during injection molding, the rubber material in the forming cavity is blocked by the first blocking pieces, so that the rubber material is prevented from flowing out of the forming cavity, the rubber material is further prevented from flowing to other areas of the terminal except the area to be coated, and the phenomenon of rubber overflow is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field especially relates to a forming assembly and injection mold. BACKGROUND

[0002] For the terminal of the overmolded injection sealing ring, the terminal is placed in the cavity of the mold first, and then the sealing ring material (such as rubber, silicone, etc.) is injected into the cavity through the injection molding machine, so that the sealing ring material flows on the surface of the terminal and is coated thereon, and after cooling and solidification, the structure of the sealing ring and the terminal is formed.

[0003] In the related art, in the injection molding process of the overmolded sealing ring of the tubular terminal, the glue flows into the forming cavity and continues to flow along the axial direction of the tubular terminal, which causes the glue to overflow the forming cavity, resulting in the overflow phenomenon. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model lies in providing a forming assembly and injection mold, aiming at solving the problem of overflow phenomenon in the injection molding process of the overmolded injection product of the tubular terminal in the related art.

[0005] To solve the above technical problems, the utility model provides a forming assembly in the first aspect, which is used for forming an overmolded injection product on a to-be-coated area of a tubular terminal, and the forming assembly comprises:

[0006] A first mold group comprises a first mold pin provided with a first forming groove on one side;

[0007] A second mold group comprises a second mold pin slidably assembled on the side of the first mold pin provided with the first forming groove, and the side of the second mold pin close to the first mold pin is provided with a second forming groove; and

[0008] A first blocking piece is arranged on the side of the first mold pin close to the second mold pin, and the first blocking piece is provided with two, and the two first blocking pieces are arranged at the two ends of the first forming groove, respectively.

[0009] When the mold is closed, the first mold pin and the second mold pin are attached, the first forming groove and the second forming groove are sealed to form a forming cavity, the to-be-coated area of the terminal is located in the forming cavity, the first blocking piece is sleeved on the outside of the terminal, and the two first blocking pieces are arranged at the two ends of the forming cavity, respectively.

[0010] Optionally, the first blocking piece comprises:

[0011] A connecting portion is arranged on the side of the first mold pin close to the second mold pin; and

[0012] A first blocking portion is connected to the end of the connecting portion away from the first mold core, and the first blocking portion is in an arc shape adapted to the terminal.

[0013] Optionally, the first mold core has a mounting hole on the side near the second mold core, the connecting part is fitted into the mounting hole, and the diameter of the connecting part gradually decreases in the direction from the first mold core to the second mold core.

[0014] Optionally, the first blocking part has a conical surface at one end near the first molding groove, the conical surface is inclined toward the first molding groove, and the conical surface is attached to the side of the first mold core near the second mold core.

[0015] Optionally, the terminal has a first notch on the side near the first mold core, the first notch being located within the area to be covered, and the terminal has a second notch on the side near the second mold core, both the first notch and the second notch communicating with the inner cavity of the terminal;

[0016] The molding assembly further includes a second blocking member disposed on the side of the second mold core near the first mold core. There are two second blocking members, which are respectively disposed at both ends of the second molding groove, and the second blocking members pass through the second notch and abut against the inner wall of the terminal.

[0017] The two second blocking members seal the inner cavity of the terminal located in the area to be covered.

[0018] Optionally, the second mold core is provided with a protrusion on the side near the first mold core, the protrusion passing through the second notch and extending into the inner cavity of the terminal, and the protrusion is provided with a mounting groove on the side near the first mold core;

[0019] The second blocking member is assembled in the mounting groove, and the side of the second blocking member away from the protrusion abuts against the inner wall of the terminal.

[0020] Optionally, there is a gap between the protrusion near the first mold core and the inner wall of the terminal.

[0021] Optionally, the second blocking member includes:

[0022] The second blocking part is arc-shaped and fitted into the mounting groove; and

[0023] The abutting part has two parts, and the two abutting parts are respectively connected to the two ends of the second blocking part. The side of the abutting part away from the second mold core abuts against the first blocking member.

[0024] Optionally, both the first blocking member and the second blocking member are flexible.

[0025] The utility model discloses a second aspect provides a kind of injection mold, including the forming assembly and glue injection component as any one of the above, the glue injection component is set to the first mould core side away from the second mould core.

[0026] Compared with the related art, the forming assembly and the injection mold have the beneficial effects that: the first blocking member is sleeved on the outside of the tubular terminal, and the two first blocking members are respectively arranged at the two ends of the forming cavity. During injection molding, the glue in the forming cavity is blocked by the first blocking member, thereby preventing the glue from flowing out of the forming cavity and flowing to other areas of the terminal except the area to be covered, and the glue overflow phenomenon is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the utility model or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is the structure schematic diagram of injection mold provided by the utility model embodiment;

[0029] Figure 2 is the sectional view of forming assembly provided by the utility model embodiment;

[0030] Figure 3 is Figure 2 the enlarged view of detail A in

[0031] Figure 4 is the structure schematic diagram of second mould core provided by the utility model embodiment;

[0032] Figure 5 is Figure 4 the enlarged view of detail B in

[0033] Figure 6 is Figure 4 the enlarged view of detail C in

[0034] Figure 7 is the structure schematic diagram of first mould core provided by the utility model embodiment;

[0035] Figure 8 is the structure schematic diagram of first blocking member provided by the utility model embodiment;

[0036] Figure 9 is the structure schematic diagram of second blocking member provided by the utility model embodiment;

[0037] Figure 10 is an assembly diagram of the injection molding product and the terminal provided by the embodiment of the present application;

[0038] Figure 11 is a structural diagram of the terminal provided by the embodiment of the present application.

[0039] In the drawings, various reference signs represent: 1, first mold group; 11, first mold kernel; 111, first forming groove; 112, mounting hole; 12, first fixed seat; 13, first mold plate; 2, second mold group; 21, second mold kernel; 211, second forming groove; 212, protruding part; 22, second fixed seat; 23, second mold plate; 3, first blocking piece; 31, connecting part; 32, first blocking part; 321, taper surface; 4, second blocking piece; 41, second blocking part; 42, abutting part; 10, terminal; 101, first notch; 102, second notch; 103, to-be-coated area; 20, injection molding product; 30, glue injection assembly; 40, forming assembly. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0042] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" and "several" is two or more than two, unless otherwise explicitly and specifically limited.

[0043] Embodiments:

[0044] Please refer to Figure 1 The utility model embodiment provides a kind of injection mold, including forming assembly 40 and glue injection assembly 30, glue injection assembly 30 is set to one side of forming assembly 40, glue injection assembly 30 is used to inject glue material to forming assembly 40.

[0045] Please refer to Figures 2 to 11 Forming assembly 40 is used to form covering injection molding product 20 on the terminal 10 area 103 to be covered of tubular, forming assembly 40 includes first die set 1, second die set 2 and first blocking piece 3, first die set 1 includes the first die pin 11 with first forming groove 111 on one side;Second die set 2 includes the second die pin 21 that is slidably assembled to the side of first die pin 11 with first forming groove 111, the side of second die pin 21 close to first die pin 11 is equipped with second forming groove 211;First blocking piece 3, it is set to the side of first die pin 11 close to second die pin 21, first blocking piece 3 is equipped with two, two first blocking piece 3 is respectively equipped in the two ends of first forming groove 111;Wherein, when film is combined, first die pin 11 and second die pin 21 are attached, first forming groove 111 and second forming groove 211 are sealed to form forming cavity, and the area 103 to be covered of terminal 10 is located in forming cavity, and first blocking piece 3 is set on the outside of terminal 10, and two first blocking piece 3 is respectively equipped in the two ends of forming cavity.

[0046] Because first blocking piece 3 is set on the outside of tubular terminal 10, and two first blocking piece 3 is respectively equipped in the two ends of forming cavity, when injection molding, the glue material in forming cavity will be blocked by first blocking piece 3, to prevent glue material from flowing out of forming cavity, and then prevent glue material from flowing to the other areas of terminal 10 except the area 103 to be covered, to avoid the phenomenon of glue overflow.

[0047] Please refer to Figure 1 And Figure 2In some embodiments, the glue injection assembly 30 is arranged on the side of the first mold core 11 away from the second mold core 21, and the glue injection assembly 30 is used to inject glue into the molding cavity. The first mold set 1 further comprises a first fixed seat 12 and a first mold plate 13, the first fixed seat 12 is provided with a first installation cavity, and the first mold core 11 is arranged on the side of the first mold plate 13 close to the second mold core 21 and is accommodated in the first installation cavity. The second mold set 2 further comprises a second fixed seat 22 and a second mold plate 23, the second fixed seat 22 is provided with a second installation cavity, and the second mold core 21 is arranged on the side of the second mold plate 23 close to the first mold core 11 and is accommodated in the second installation cavity.

[0048] Please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 8 , the first blocking piece 3 comprises a connecting portion 31 and a first blocking portion 32, the connecting portion 31 is arranged on the side of the first mold core 11 close to the second mold core 21, so as to fix the first blocking piece 3 on the first mold core 11. The first blocking portion 32 is connected to the end of the connecting portion 31 away from the first mold core 11, and the first blocking portion 32 is arc-shaped and matched with the terminal 10, so that the first blocking portion 32 can be closely arranged on the outside of the terminal 10, and the sealing between the first blocking portion 32 and the terminal 10 is improved.

[0049] According to actual needs, the first blocking portion 32 can be semicircular arc-shaped, the connecting portion 31 can be columnar, and the connecting portion 31 is arranged at the middle position of the first blocking portion 32. During film combining, the side of the first blocking portion 32 away from the first mold core 11 abuts against the second mold core 21, and the first blocking portion 32 is in sealing contact with the second mold core 21, so that the glue can be prevented from flowing out from the gap between the first blocking portion 32 and the second mold core 21.

[0050] Please refer to Figure 3 and Figure 8 , the side of the first mold core 11 close to the second mold core 21 is provided with a mounting hole 112, the connecting portion 31 is fitted in the mounting hole 112, and the diameter of the connecting portion 31 gradually decreases in the direction along the first mold core 11 towards the second mold core 21, so that the connecting portion 31 and the mounting hole 112 form an undercut structure, which is beneficial to prevent the connecting portion 31 from separating from the mounting hole 112 and improve the connection firmness between the connecting portion 31 and the first mold core 11.

[0051] Please refer to Figure 5 、 Figure 7 and Figure 8The first blocking part 32 is provided with a tapered surface 321 close to one end of the first forming groove 111. The tapered surface 321 is arranged to be inclined towards the first forming groove 111, and the tapered surface 321 of the first blocking part 32 is attached to the side of the first mold core 11 close to the second mold core 21. The connection sealing between the first blocking part 32 and the first mold core 11 is improved, so that the first blocking part 3 can prevent the overflow of the rubber from the forming cavity.

[0052] Please refer to Figure 4 , Figure 6 , Figure 9 and Figure 11 , the terminal 10 is provided with a first notch 101 close to the first mold core 11, the first notch 101 is located in the to-be-coated area 103, the terminal 10 is provided with a second notch 102 close to the second mold core 21, the first notch 101 and the second notch 102 are in communication with the inner cavity of the terminal 10, and the rubber can flow into the inner cavity of the terminal 10 through the first notch 101, so that the rubber fills the inner cavity of the terminal 10 in the to-be-coated area 103. The forming assembly 40 further comprises a second blocking part 4 arranged on the side of the second mold core 21 close to the first mold core 11. The second blocking part 4 is provided with two, and the two second blocking parts 4 are arranged at the two ends of the second forming groove 211 respectively, and the second blocking part 4 passes through the second notch 102 and abuts against the inner wall of the terminal 10; wherein the two second blocking parts 4 seal the inner cavity of the terminal 10 in the to-be-coated area 103, so that the second blocking part 4 can prevent the rubber in the inner cavity of the terminal 10 from flowing into the inner cavity of other areas from the to-be-coated area 103, further avoiding the generation of overflow.

[0053] It should be understood that the first blocking part 3 prevents the rubber outside the terminal 10 from flowing axially from the to-be-coated area 103 to other areas, and the second blocking part 4 prevents the rubber in the inner cavity of the terminal 10 from flowing axially from the to-be-coated area 103 to other areas, thereby avoiding the generation of overflow.

[0054] Please refer to Figure 4 and Figure 5 , the second mold core 21 is provided with a protruding part 212 close to the first mold core 11, the protruding part 212 passes through the second notch 102 and extends into the inner cavity of the terminal 10, and the protruding part 212 is provided with a mounting groove close to the first mold core 11; the second blocking part 4 is assembled in the mounting groove, which can fix the second blocking part 4 on the second mold core 21, and also can ensure that the second blocking part 4 is located in the inner cavity of the terminal 10. Moreover, the side of the second blocking part 4 away from the protruding part 212 abuts against the inner wall of the terminal 10, so that the second blocking part 4 is in sealing contact with the inner wall of the terminal 10, so that the second blocking part 4 can prevent the rubber in the inner cavity of the terminal 10 from flowing axially from the to-be-coated area 103 to other areas.

[0055] The protruding portion 212 is provided with a gap between the side close to the first die core 11 and the inner wall of the terminal 10, so that the protruding portion 212 is prevented from contacting the terminal 10, thereby preventing the terminal 10 from being damaged.

[0056] Please refer to Figure 5 and Figure 9 The second blocking piece 4 comprises a first blocking portion 32 and an abutting portion 42. The first blocking portion 32 is arc-shaped and is assembled in the mounting groove, so that the first blocking portion 32 is matched with the inner wall of the terminal 10, thereby improving the contact sealing property between the first blocking portion 32 and the terminal 10. The abutting portion 42 is provided with two abutting portions 42, and the two abutting portions 42 are respectively connected to the two ends of the first blocking portion 32. The abutting portion 42 away from the side of the second die core 21 close to the first die core 11 abuts against the first blocking piece 3, so that the abutting portion 42 is in sealing contact with the first blocking piece 3, thereby preventing the adhesive from overflowing from the molding cavity.

[0057] According to actual needs, the abutting portion 42 is attached to the side of the second die core 21 close to the first die core 11, and the abutting portion 42 abuts against the tapered surface 321 of the first blocking portion 32.

[0058] The first blocking piece 3 and the second blocking piece 4 are both flexible, so that the first blocking piece 3 and the second blocking piece 4 are both in flexible contact, i.e. soft contact, with the terminal 10. The flexible contact between the first blocking piece 3 and the second blocking piece 4 and the terminal 10 can improve the contact sealing property between the first blocking piece 3 and the second blocking piece 4 and the terminal 10, and can prevent the terminal 10 from being damaged. According to actual needs, the first blocking piece 3 and the second blocking piece 4 can be made of silica gel or rubber material.

[0059] It should be noted that, for the terminal 10 plated with a plating layer, the soft contact between the first blocking piece 3 and the second blocking piece 4 and the terminal 10 can prevent the plating layer from being damaged.

[0060] The above merely describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A molding assembly for molding an overmolded product on a tubular terminal area to be covered, characterized in that, The molding component includes: The first module includes a first mold core with a first forming groove on one side; The second module includes a second mold core slidably mounted on the side of the first mold core that has the first molding groove, the second mold core having a second molding groove on the side near the first mold core; and, The first blocking member is disposed on the side of the first mold core near the second mold core. There are two first blocking members, which are respectively disposed at both ends of the first molding groove. During the molding process, the first mold core and the second mold core are fitted together, and the first molding groove and the second molding groove are sealed to form a molding cavity. The area of ​​the terminal to be covered is located in the molding cavity. The first blocking member is sleeved on the outside of the terminal, and the two first blocking members are respectively located at both ends of the molding cavity.

2. The molding component according to claim 1, characterized in that, The first blocking member includes: A connecting portion is disposed on the side of the first mold core near the second mold core; and, A first blocking portion is connected to the end of the connecting portion away from the first mold core, and the first blocking portion is in an arc shape adapted to the terminal.

3. The molding component according to claim 2, characterized in that, The first mold core has a mounting hole on the side near the second mold core, the connecting part is fitted into the mounting hole, and the diameter of the connecting part gradually decreases in the direction from the first mold core to the second mold core.

4. The molding component according to claim 2, characterized in that, The first blocking part has a conical surface at one end near the first molding groove. The conical surface is inclined toward the first molding groove and is attached to the side of the first mold core near the second mold core.

5. The molding component according to claim 1, characterized in that, The terminal has a first notch on the side near the first mold core, the first notch being located within the area to be covered, and the terminal has a second notch on the side near the second mold core, both the first notch and the second notch communicating with the inner cavity of the terminal; The molding assembly further includes a second blocking member disposed on the side of the second mold core near the first mold core. There are two second blocking members, which are respectively disposed at both ends of the second molding groove, and the second blocking members pass through the second notch and abut against the inner wall of the terminal. The two second blocking members seal the inner cavity of the terminal located in the area to be covered.

6. The molding component according to claim 5, characterized in that, The second mold core has a protrusion on the side near the first mold core. The protrusion passes through the second notch and extends into the inner cavity of the terminal. The protrusion has a mounting groove on the side near the first mold core. The second blocking member is assembled in the mounting groove, and the side of the second blocking member away from the protrusion abuts against the inner wall of the terminal.

7. The molding component according to claim 6, characterized in that, There is a gap between the protrusion near the first mold core and the inner wall of the terminal.

8. The molding component according to claim 6, characterized in that, The second blocking member includes: The second blocking part is arc-shaped and fitted into the mounting groove; and The abutting part has two parts, and the two abutting parts are respectively connected to the two ends of the second blocking part. The side of the abutting part away from the second mold core abuts against the first blocking member.

9. The molding component according to claim 5, characterized in that, Both the first blocking member and the second blocking member are flexible.

10. An injection mold, characterized in that, It includes a molding component and a glue injection component as described in any one of claims 1-9, wherein the glue injection component is disposed on the side of the first mold core away from the second mold core.

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