Injection mold for shell of quick-plug connector

Abstract

The utility model provides a quick-plug connector shell injection mold. The quick-plug connector shell injection mold comprises a top plate, an upper mold plate, a lower mold plate, a supporting plate and a bottom plate, an upper mold core and a lower mold core are connected into the upper mold plate and the lower mold plate correspondingly and used for external forming of an injection product. A first mold core is movably arranged between the upper mold plate and the lower mold plate in the horizontal direction and is used for forming a straight cylinder structure in an injection product; an inner inclined ejection mechanism is arranged between the upper mold plate and the lower mold plate in the horizontal direction and is used for forming an inner inverted buckle structure of an injection molding product; the inner inclined ejection mechanism is matched with the second mold core through an inclined ejection block and is used for molding an inner inverted buckle structure and other structures of an injection product; then the two inclined ejector blocks are driven by the wedge block to horizontally move inwards to be separated from an inverted buckling structure of the injection molding product, then the inclined ejector blocks and the second mold core are driven by the mold core bottom plate and the mold core fixing plate to be completely separated from the product, and demolding is completed; forming and demolding of the inner inverted buckle structure are achieved at a time, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of mold design, and particularly relates to an injection mold for a quick-connect joint housing. Background Art

[0002] The quick-connect joint in this application is used on the fuel pipe of a fuel vehicle and is usually produced by an injection molding process. During the injection molding process, due to the complex internal undercut structure often existing in the quick-connect joint housing, conventional molds are prone to causing product damage during demolding, and the production efficiency is low. Therefore, how to design an injection mold that can efficiently form and smoothly demold has become an urgent problem to be solved in the industry.

[0003] At present, most of the common injection molds on the market adopt fixed cores or simple demolding mechanisms. When facing complex internal undercut structures, these molds usually cannot guarantee the integrity of the product. Especially during the demolding process, traditional molds are prone to jamming the product at the internal undercut structure part, resulting in product deformation or damage. In addition, the demolding process of traditional molds is complex and inconvenient to operate, affecting the overall production efficiency. Summary of the Utility Model

[0004] An injection mold for a quick-connect joint housing of the utility model is used to solve the related technical problems in the background art.

[0005] The technical solution provided by the utility model is as follows: An injection mold for a quick-connect joint housing includes: a top plate, an upper template, a lower template, a support plate, and a bottom plate;

[0006] An upper mold core and a lower mold core are respectively connected inside the upper template and the lower template for the external molding of the injection product; between the upper template and the lower template, a first core is movably arranged in the horizontal direction for the molding of the inner straight cylinder structure of the injection product; between the upper template and the lower template, an internal inclined ejector mechanism is arranged in the horizontal direction for the molding of the internal undercut structure of the injection product;

[0007] The internal inclined ejector mechanism includes: a first slider seat, a core bottom plate, a core fixing plate, a second core, and a telescopic cylinder for driving the first slider seat to move along the product direction; a counterbore is inwardly formed on the right side surface of the first slider seat, and the core bottom plate is connected to the counterbore through a screw, and there is a movable gap between the end of the screw nut and the counterbore; when the first slider seat moves to the right and the nut interferes with the counterbore, the core bottom plate is driven to move to the right together;

[0008] The core bottom plate and the core fixing plate are fixedly connected, a sliding groove is formed between the core bottom plate and the core fixing plate, a movable cavity is formed in the core fixing plate, one end of the second core is connected to the sliding groove, and the other end passes through the movable cavity and is placed between the upper mold core and the lower mold core;

[0009] A molding groove is provided in the second core, and two inclined ejector blocks are movably connected in the molding groove. One end of the inclined ejector block is movably connected in the slide groove, and the other end cooperates with the second core in the molding groove, so as to be used for molding the undercut structure of the injection molded product;

[0010] A wedge block is slidably connected between the inclined top blocks, and the wedge block passes through the core bottom plate and is connected with the first slider seat; when the first slider seat moves to the right, the wedge block drives the two inclined top blocks to move toward each other.

[0011] Furthermore, a spring hole is opened in the first slider seat and the core bottom plate, a spring guide column is arranged in the spring hole, a spring is sleeved on the spring guide column, and two ends of the spring are respectively connected to the first slider seat and the core bottom plate.

[0012] Furthermore, the spring is a tension spring.

[0013] Furthermore, the right side wall of the lower template is connected to the telescopic cylinder via a mounting seat.

[0014] Furthermore, a movable second slider seat is arranged on the left side of the injection molded product, and the second slider seat is connected to the first core; an inclined guide column is connected to the bottom of the upper template, and the inclined guide column is inserted into the second slider seat. When the upper template moves upward, the second slider seat is driven to move to the left through the inclined guide column.

[0015] Furthermore, the support plate is between the lower template and the bottom plate, and an ejector plate is movably connected between the support plates. The ejector plate is connected with an ejector, and the ejector passes through the lower template and the lower mold core to eject the injection molded product.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The utility model quick-connect connector housing injection mold cooperates with the second core through the inclined top block to be used for molding the internal undercut structure and other structures of the injection molded product; then the two inclined top blocks are driven by the wedge block to move horizontally inward first to separate from the undercut structure of the injection molded product, and then the inclined top block and the second core are driven by the core bottom plate and the core fixing plate to completely separate from the product to complete demolding; the molding and demolding of the internal undercut structure are achieved at one time, thereby improving production efficiency.

[0018] (2) The quick-connect connector housing injection mold of the utility model can ensure that when the first slider seat moves first, the core bottom plate does not move with it by arranging a tension spring between the first slider seat and the core bottom plate, thereby ensuring the stability of the inclined top block moving horizontally inward and separating from the undercut structure of the injection molded product, thereby improving the demolding success rate and reducing the defective rate of injection molding production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the injection mold of the quick-connect connector housing of the utility model;

[0020] Figure 2 It is a sectional perspective view of the injection mold for the quick-connect joint housing of the present utility model;

[0021] Figure 3 It is a structural schematic diagram of the lower template and the internal inclined ejector mechanism of the present utility model;

[0022] Figure 4 It is a sectional front view of the inclined ejector block and the wedge block of the present utility model;

[0023] Figure 5 It is a structural schematic diagram of the first slider seat, the core bottom plate, the core fixing plate, and the second core connection structure of the present utility model;

[0024] Figure 6 It is the present utility model Figure 5 sectional view;

[0025] Figure 7 It is a sectional view of the spring hole, the spring guide post, and the spring in the first slider seat of the present utility model;

[0026] Figure 8 It is a sectional view of the counterbore and the screw in the first slider seat of the present utility model;

[0027] Figure 9 It is a structural schematic diagram of the second core of the present utility model;

[0028] Figure 10 It is a structural schematic diagram of the inclined ejector block and the wedge block of the present utility model.

[0029] The reference numerals are as follows: 1, top plate; 2, upper template; 3, lower template; 4, support plate; 5, bottom plate; 6, upper mold core; 7, lower mold core; 8, first core; 9, internal inclined ejector mechanism; 91, first slider seat; 911, counterbore; 912, screw; 913, moving gap; 914, spring hole; 915, spring guide post; 92, core bottom plate; 921, chute; 93, core fixing plate; 931, moving cavity; 94, second core; 941, forming groove; 95, telescopic cylinder; 96, mounting seat; 97, inclined ejector block; 98, wedge block; 99, spring; 10, second slider seat; 11, inclined guide post; 12, ejector plate; 13, ejector pin. Detailed Description of the Invention

[0030] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0031] As Figures 1-10As shown in the figure, the utility model is an injection mold for a quick-connect joint housing, including: a top plate 1, an upper template 2, a lower template 3, a support plate 4, a bottom plate 5, an upper mold core 6, a lower mold core 7, a first core 8, and an inner inclined ejector mechanism 9;

[0032] In this embodiment, the injection product is a quick-connect joint housing. As shown in the figure, the interior of the injection product has two undercut structures. After being formed by a conventional inner core, the inner core is not easily demolded. In this embodiment, the upper mold core 6 is connected inside the upper template 2, and the lower mold core 7 is connected inside the lower template 3. A cavity is formed between the upper mold core 6 and the lower mold core 7 for forming the external structure of the injection product. The first core 8 is movably arranged in the horizontal direction and is on one side of the injection product. It is in the cavity between the upper mold core 6 and the lower mold core 7 and is used for forming the inner straight cylinder structure at one end of the injection product. The inner inclined ejector mechanism 9 is between the upper template 2 and the lower template 3 and is also arranged in the horizontal direction. It is on the other side of the injection product and is used for forming the undercut structure and other straight cylinder structures inside the injection product. In this embodiment, by horizontally arranging the first core 8 and the inner inclined ejector mechanism 9, the horizontal arrangement is more compact, and multiple injection products can be formed simultaneously, increasing the output of one-time forming and thus improving production efficiency.

[0033] In this embodiment, the inclined ejector mechanism includes: a first slider seat 91, a core bottom plate 92, a core fixing plate 93, a second core 94, and a telescopic cylinder 95 that drives the first slider seat 91 to move along the product direction; a counterbore 911 is inwardly formed on the right side surface of the first slider seat 91, and the core bottom plate 92 is connected to the counterbore 911 through a screw 912. There is an active gap 913 between the end of the screw 912 nut and the counterbore 911. When the mold is opened, the telescopic cylinder 95 drives the first slider seat 91 to move to the right. The first slider seat 91 is separated from the core bottom plate 92 until the nut of the screw 912 interferes with the counterbore 911, driving the core bottom plate 92 to move to the right together. A chute 921 is formed on the surface of the core bottom plate 92 that fits with the core fixing plate 93. An active cavity 931 is formed inside the core fixing plate 93. The active cavity 931 communicates with the chute 921. One end of the second core 94 is limited and connected inside the chute 921, and the other end passes through the active cavity 931 and is placed in the cavity between the upper mold core 6 and the lower mold core 7 for forming the inner structure of the injection product.

[0034] A forming groove 941 is formed in the second core 94. Two lifters 97 are movably connected in the forming groove 941. One end of the lifter 97 is movably connected in the sliding groove 921, and the other end is matched with the second core 94 in the forming groove 941 for forming an undercut structure in an injection-molded product. In this embodiment, the lifter 97 is L-shaped, its horizontal wall is clamped in the sliding groove 921, and its vertical wall is inclined. The lifter 97 is clamped in the forming groove 941. After the mold is closed, the outer surface of the lifter 97 is matched with the outer surface of the second core 94. A wedge block 98 is slidably connected between the lifters 97. The wedge block 98 passes through the core bottom plate 92 and is connected to the first slider seat 91. In this embodiment, the wedge block 98 is between the vertical walls of the two lifters 97, and a dovetail groove is formed in the vertical wall. A dovetail slider protrudes from the wedge block 98, and the wedge block 98 is slidably connected to the dovetail groove of the lifter 97 through the dovetail slider. When the mold is opened, the upper template 2 moves upward to open the mold. The telescopic cylinder 95 drives the first slider seat 91 to move to the right. The first slider seat 91 drives the wedge block 98 to move to the right together. The wedge block 98 drives the two lifters 97 to move horizontally and face each other along the sliding groove 921, so that the two lifters 97 are separated from the undercut structure of the injection-molded product. Continuing to move to the right until the nut of the screw 912 interferes with the counterbore 911, it drives the core bottom plate 92 to move to the right together. The core bottom plate 92 and the core fixing plate 93 drive the second core 94 to completely separate from the product, completing the demolding. The forming and demolding of the undercut structure are realized at one time, improving the production efficiency.

[0035] In this embodiment, spring holes 914 are formed in the first slider seat 91 and the core bottom plate 92. Spring guide posts 915 are arranged in the spring holes 914. A spring 99 is sleeved on the spring guide posts 915. Two ends of the spring 99 are respectively connected to the first slider seat 91 and the core bottom plate 92. And the spring 99 in this embodiment is a tension spring 99. When the telescopic cylinder 95 drives the first slider seat 91 to move to the right, the spring 99 abuts against the core bottom plate 92, preventing the core bottom plate 92 from following, ensuring the stability of the actions such as the horizontal inward movement of the lifter 97 to separate from the undercut structure of the injection-molded product, improving the demolding success rate, and reducing the defective rate of injection molding production.

[0036] In this embodiment, the telescopic cylinder 95 is connected to the right side wall of the lower template 3 through a mounting seat 96. By arranging the telescopic cylinder 95 in the horizontal direction, it is possible to avoid adding structures in the vertical direction, reducing the complexity of the mold, and thus improving the efficiency of mold design and mold processing.

[0037] In this embodiment, the first core 8 moves horizontally through the second slider base 10; specifically, an active second slider base 10 is provided on the left side of the injection molded product, and the second slider base 10 is connected to the first core 8; a cam pin 11 is connected below the upper template 2, and the cam pin 11 is inserted into the second slider base 10. As shown in the figure, the cam pin 11 is inclined outward. When the upper template 2 moves upward, the second slider base 10 is driven to move leftward by the cam pin 11, so that the first core 8 can be withdrawn from the injection molded product.

[0038] In this embodiment, the support plate 4 is between the lower template 3 and the bottom plate 5. A ejector plate 12 is movably connected between the support plates 4. A ejector pin 13 is connected to the ejector plate 12. The ejector pin 13 passes through the lower template 3 and the lower mold core 7 for ejecting the injection molded product; when the first core 8 and the internal lifter mechanism 9 are completely withdrawn from the injection molded product, the injection molded product is ejected by the ejector pin 13 to realize the demolding of the product.

[0039] Working principle: When the mold is opened, the upper template 2 moves upward to open the mold. The second slider base 10 is driven to move leftward by the cam pin 11, so that the first core 8 can be withdrawn from the injection molded product; the telescopic cylinder 95 drives the first slider base 91 to move to the right side, and the spring 99 abuts against the core bottom plate 92 to prevent the core bottom plate 92 from running away. The first slider base 91 drives the wedge block 98 to move to the right side together. The wedge block 98 drives the two lifter blocks 97 to move horizontally towards each other along the chute 921, so that the two lifter blocks 97 are disengaged from the undercut structure of the injection molded product; continue to move to the right side until the nut of the screw 912 interferes with the counterbore 911, driving the core bottom plate 92 to move to the right side together. The core bottom plate 92 and the core fixing plate 93 drive the second core 94 to be completely disengaged from the product; thus, the forming and demolding of the internal undercut structure are realized at one time, improving the production efficiency.

[0040] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0041] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A quick-connect connector housing injection mold, characterized in that: include: A top plate (1), an upper template (2), a lower template (3), a support plate (4), and a bottom plate (5); An upper mold core (6) and a lower mold core (7) are respectively connected to the upper mold plate (2) and the lower mold plate (3) for external molding of the injection molded product; a first mold core (8) is movably arranged in the horizontal direction between the upper mold plate (2) and the lower mold plate (3) for molding the straight cylinder structure inside the injection molded product; an inner inclined top mechanism (9) is arranged in the horizontal direction between the upper mold plate (2) and the lower mold plate (3) for molding the undercut structure inside the injection molded product; The inner inclined ejector mechanism (9) comprises: a first slider seat (91), a core bottom plate (92), a core fixing plate (93), a second core (94), and a telescopic cylinder (95) for driving the first slider seat (91) to move along the product direction; a countersunk hole (911) is provided inwardly on the right side surface of the first slider seat (91), the countersunk hole (911) is connected to the core bottom plate (92) via a screw (912), and a movable gap (913) is provided between the end of the nut of the screw (912) and the countersunk hole (911); when the first slider seat (91) moves to the right, when the nut interferes with the countersunk hole (911), the core bottom plate (92) is driven to move to the right together; The core bottom plate (92) and the core fixing plate (93) are fixedly connected, a slide groove (921) is provided between the core bottom plate (92) and the core fixing plate (93), a movable cavity (931) is provided in the core fixing plate (93), one end of the second core (94) is connected to the slide groove (921), and the other end passes through the movable cavity (931) and is placed between the upper mold core (6) and the lower mold core (7); The second core (94) is provided with a molding groove (941), and two inclined ejector blocks (97) are movably connected in the molding groove (941). One end of the inclined ejector block (97) is movably connected in the slide groove (921), and the other end cooperates with the second core (94) in the molding groove (941) to form an undercut structure of an injection molded product; A wedge block (98) is slidably connected between the inclined top blocks (97), and the wedge block (98) passes through the core bottom plate (92) and is connected to the first slider seat (91); when the first slider seat (91) moves to the right, the wedge block (98) drives the two inclined top blocks (97) to move toward each other.

2. The quick-connect connector housing injection mold according to claim 1, characterized in that: A spring hole (914) is provided in the first slider seat (91) and the core bottom plate (92), a spring guide column (915) is provided in the spring hole (914), a spring (99) is sleeved on the spring guide column (915), and two ends of the spring (99) are respectively connected to the first slider seat (91) and the core bottom plate (92).

3. The quick-connect connector housing injection mold according to claim 2, characterized in that: The spring (99) is a tension spring.

4. The quick-connect connector housing injection mold according to claim 1, characterized in that: The right side wall of the lower template (3) is connected to the telescopic cylinder (95) via a mounting seat (96).

5. The quick-connect connector housing injection mold according to claim 1, characterized in that: A movable second slider seat (10) is arranged on the left side of the injection molded product, and the second slider seat (10) is connected to the first core (8); an inclined guide column (11) is connected to the bottom of the upper mold plate (2), and the inclined guide column (11) is inserted into the second slider seat (10). When the upper mold plate (2) moves upward, the second slider seat (10) is driven to move leftward through the inclined guide column (11).

6. The quick-connect connector housing injection mold according to claim 1, characterized in that: The support plate (4) is between the lower mold plate (3) and the bottom plate (5), and an ejector plate (12) is movably connected between the support plates (4). An ejector pin (13) is connected to the ejector plate (12), and the ejector pin (13) passes through the lower mold plate (3) and the lower mold core (7) to eject the injection molded product.

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