Injection molding equipotential water return ring mold structure

Abstract

The utility model discloses an injection molding equipotential backwater ring mold structure which comprises an upper cavity template, an upper cavity, a lower cavity template and a lower cavity, a mold opening mechanism is fixedly arranged on the upper cavity template, an insert core is arranged on the upper cavity, and an insert is arranged on the insert core; a sliding seat is arranged on the lower cavity template, a linear mold core and an arc mold core are arranged on the sliding seat, the linear mold core is fixed on a first mold core sliding block, a second mold core sliding block is arranged on the arc mold core, a sliding-out mechanism is arranged on the first mold core sliding block, the sliding-out mechanism is connected with the mold opening mechanism through a transmission mechanism, and an insert wiring port is formed in the side, facing the first mold core sliding block, of the insert. The anti-blocking mechanism is arranged at the insert wiring port, during mold opening, the mold opening mechanism moves to drive the transmission mechanism to rotate, after the mold opening mechanism moves to drive the transmission mechanism to rotate, and the lower cavity template stops moving, the protrusion of the elastic block pops up from the insert wiring port under the action of the spring; and the lower cavity template collides with the elastic block to reset the elastic block.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding pipe fitting molds, in particular to an injection molding equipotential water return ring mold structure. Background Art

[0002] Insert molding refers to a molding method in which a pre-prepared insert of a different material is placed in the mold and then resin is injected, and the molten material is bonded and solidified with the insert to form an integrated product. The inserts installed in the mold generally lack a positioning mechanism. The main reason is that the overall structure of the insert is relatively small and cannot be installed or the product structure is limited. The function of equipotential fittings is to prevent electric shock injuries caused by potential differences exceeding the safe voltage. It can prevent lightning, static electricity, and electric shock. When installing equipotential fittings, wires need to be connected from the inserts and connected to the terminal box through the wires. When injecting equipotential fittings, it is necessary to consider that the wiring port of the insert must be kept exposed and cannot be blocked by plastic.

[0003] To this end, the utility model proposes an injection molding equipotential water return ring mold structure, which can avoid the problem of the insert wiring port being blocked. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an injection molding equipotential water return ring mold structure, which effectively avoids the problem of the insert wiring port being blocked by blocking materials.

[0005] The technical solution of the utility model is as follows:

[0006] An injection molding equipotential return water ring mold structure comprises an upper cavity template, an upper cavity, a lower cavity template and a lower cavity, wherein a mold opening mechanism is fixedly provided on the upper cavity template, an insert core is provided on the upper cavity, and an insert is arranged on the insert core; a slide seat is provided on the lower cavity template, a linear core and an arc core are provided on the slide seat, the arc core is fixed on a core slider 1, a core slider 2 is provided on the linear core, the core slider 2 is fixed to the slide seat through a positioning shaft and a support seat, a slide-out mechanism is provided on the core slider 1, the slide-out mechanism is connected to the mold opening mechanism through a transmission mechanism, an insert wiring port is provided on the side of the insert facing the core slider 1, an anti-blocking mechanism for avoiding blockage thereof is provided at the insert wiring port, wherein the anti-blocking mechanism is fixed on the upper cavity.

[0007] Furthermore, the anti-blocking mechanism includes a spring block, a spring and a plug screw, the two ends of the spring block are in contact with the movable mold parting surface and the lower cavity respectively, and the distance from the bottom surface of the spring block to its corresponding top surface gradually increases from the upper cavity to the lower cavity. A plug screw is provided in the spring block, and the plug screw is parallel to the movement direction of the spring block. A spring is provided at the end of the plug screw close to the upper cavity, and the plug screw is threadedly connected to the upper cavity; a protrusion matching the size of the insert wiring port is provided on the spring block, and the protrusion cooperates with the insert wiring port; when the mold is in the closed state, the spring block is pressed by the movable mold parting surface.

[0008] Furthermore, a limiting ring is provided inside the spring block, and the two ends of the limiting ring are respectively a spring limiting groove and a driving screw movable groove; the driving screw comprises a driving screw body, wherein one end of the driving screw body is a threaded end, and the other end is provided with a nut, and the part of the driving screw with the nut is installed in the driving screw movable groove, and its threaded end is threadedly connected with the internal thread of the upper cavity.

[0009] Furthermore, the elastic block is provided with a step surface facing the insert, and the protrusion is arranged on the step surface.

[0010] Furthermore, the mold opening mechanism includes an L-shaped rack fixing seat, the rack fixing seat is fixed on the fixed mold frame, a first rack is fixed on the rack fixing seat, a group of teeth are provided on the surface of the first rack, and it meshes with the transmission mechanism.

[0011] Furthermore, the transmission mechanism is installed in a gear fixing seat on one side of the lower cavity template, and the transmission mechanism includes a first gear, a second gear and a coaxial gear, wherein the coaxial gear includes a coaxial large gear and a coaxial small gear that are coaxially connected, the first gear and the second gear are respectively located on both sides of the coaxial small gear, and are respectively meshed with the coaxial small gear, the first gear is meshed with the first rack, and the coaxial large gear is meshed and connected with the slide-out mechanism, the first rack drives the first gear to rotate, thereby driving the coaxial small gear to rotate, and the coaxial small gear drives the coaxial large gear to rotate to realize the movement of the slide-out mechanism.

[0012] Furthermore, the slide-out mechanism includes a second rack and a sliding bar, one side of the second rack is a toothed structure, meshing with the coaxial large gear, the second rack is fixedly connected to the core slider, and the sliding bar is located on both sides of the second rack.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1) The technical solution of the utility model is adopted, and an anti-blocking mechanism is provided at the insert wiring port to avoid blockage. When the mold is opened, the mold opening mechanism moves to drive the transmission mechanism to rotate. After the lower cavity template stops moving, the protrusion of the spring block is ejected from the insert wiring port under the action of the spring. When the mold is closed, the lower cavity template collides with the spring block to reset it due to the action of the movement during mold closing.

[0015] 2) The utility model has a reasonable mold structure design and a good anti-blocking effect on the insert wiring port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the mold of the utility model;

[0017] Figure 2 This is a schematic diagram of the upper cavity template structure of the utility model;

[0018] Figure 3 The structure of the insert and the insert core of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the structure of the lower cavity template of the utility model;

[0020] Figure 5 This is a schematic diagram of the anti-blocking mechanism structure of the utility model;

[0021] Figure 6 This is a cross-sectional view of the bullet block of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the plug screw of the utility model;

[0023] Figure 8 This is a schematic diagram of the slide structure of the utility model;

[0024] Fig. 9 This is a schematic diagram of the slide-out mechanism of the utility model;

[0025] Fig.10 It is a structural schematic diagram of the moving mechanism of the core slider 2 of the utility model;

[0026] Fig.11 This is the section of the utility model Figure 1 ;

[0027] Fig.12 for Fig.11 Sectional view at AA;

[0028] Fig.13 This is the section of the utility model Figure 2 ;

[0029] Fig.14 for Fig.13Sectional view at the middle BB;

[0030] Fig.15 Schematic diagram of the structure of the insert and the insert core of the utility model Figure 2 .

[0031] In the figure: 1, upper cavity template; 2, upper cavity; 3, lower cavity template; 4, lower cavity; 5, insert core; 6, insert; 7, slide seat; 8, linear core; 9, arc core; 10, core slide block 1; 11, core slide block 2; 12, positioning shaft; 13, support seat; 14, insert wiring port; 15, spring block; 16, spring; 17, plug screw; 18, protrusion; 19, limit ring; 20, Spring limit slot; 21, plug screw movable slot; 211, nut; 22, step surface; 23, rack fixing seat; 24, first rack; 25, gear fixing seat; 26, first gear; 27, second gear; 28, coaxial large gear; 29, second rack; 30, sliding bar; 31, third rack; 32, rack slider; 33, connecting gear; 34, special-shaped guide slot; 35, special-shaped guide column; DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings, but the scope of protection of the present invention is not limited to the described scope.

[0033] like Figure 1 As shown, an injection molding equipotential return water ring mold structure is horizontally set in actual production; specifically, it includes an upper cavity template 1, an upper cavity 2, a lower cavity template 3 and a lower cavity 4, wherein the upper cavity template 1 and the upper cavity 2 constitute a fixed mold, and the lower cavity template 3 and the lower cavity 4 constitute a movable mold.

[0034] like Figure 2-3 As shown, the upper cavity template 1 is fixed with a mold opening mechanism, the upper cavity 2 is provided with an insert core 5, and the insert core 5 is provided with an insert 6; the lower cavity template 3 is provided with a slide 7, and the slide 7 is provided with a linear core 8 and an arc core 9, as shown in FIG. Fig.15 As shown, the linear core 8 is fixed on the core slider 10, the arc core 9 is provided with a core slider 2 11, the core slider 2 11 is fixed to the slide 7 through the positioning shaft 12 and the support seat 13, and the core slider 10 is provided with a slide-out mechanism, which is connected to the mold opening mechanism through a transmission mechanism, and the mold opening mechanism is driven to move by opening and closing the mold, and the mold opening mechanism drives the transmission mechanism to rotate, thereby driving the slide-out mechanism to slide the core slider 10 out to complete the sliding out of the core.

[0035] like Figure 4 As shown, an insert connection port 14 is provided on the side of the insert 6 facing the core slider 10, and an anti-blocking mechanism is provided at the insert connection port 14 to prevent the material from blocking it during the injection molding process, wherein the anti-blocking mechanism is fixed on the upper cavity 2.

[0036] like Figure 5 As shown, the anti-blocking mechanism includes a spring block 15, a spring 16 and a plug screw 17. The two ends of the spring block 15 are in contact with the movable mold parting surface and the lower cavity 4 respectively. The distance from the bottom surface of the spring block 15 to its corresponding top surface gradually increases from the upper cavity 2 to the lower cavity 4. A plug screw 17 is provided in the spring block 15. The plug screw 17 is parallel to the movement direction of the spring block 15. The end of the plug screw 17 close to the upper cavity 2 is sleeved with a spring 16, and the plug screw 17 is threadedly connected to the upper cavity 2; a protrusion 18 matching the size of the insert wiring port 14 is provided on the spring block 15, and the protrusion 18 cooperates with the insert wiring port 14.

[0037] In this embodiment, in the mold closing state, the spring block 15 is pressed against the movable mold parting surface.

[0038] like Figure 6 As shown, a limiting ring 19 is provided inside the spring block 15, and two ends of the limiting ring 19 are respectively a spring limiting groove 20 and a plug screw movable groove 21.

[0039] like Figure 7 As shown, the driving screw 17 includes a driving screw body, wherein one end of the driving screw body is a threaded end and the other end is provided with a nut 211. The part of the driving screw 17 having the nut 211 is installed in the driving screw movable groove 21, and its threaded end is threadedly connected to the internal thread of the upper cavity 2.

[0040] Furthermore, the elastic block 15 is provided with a step surface 22 facing the insert 6 , and the protrusion 18 is provided on the step surface 22 .

[0041] like Figure 8-10 As shown, the mold opening mechanism includes an L-shaped rack fixing seat 23, which is fixed on the fixed mold. A first rack 24 is fixed on the rack fixing seat 23, and a group of teeth are provided on the surface of the first rack 24, which meshes with the transmission mechanism.

[0042] The transmission mechanism is installed in the gear fixing seat 25 on one side of the lower cavity template 3. The transmission assembly includes a first gear 26, a second gear 27 and a coaxial gear, wherein the coaxial gear includes a coaxial large gear 28 and a coaxial small gear that are coaxially connected. The first gear 26 and the second gear 27 are respectively located on both sides of the coaxial small gear and are respectively meshed with the coaxial small gear. The first gear 26 is meshed with the first rack 24, and the coaxial large gear 28 is meshed and connected with the slide-out mechanism. The first rack 24 drives the first gear 26 to rotate, thereby driving the coaxial small gear to rotate, and the coaxial small gear drives the coaxial large gear 28 to rotate to realize the movement of the slide-out mechanism.

[0043] The slide-out mechanism includes a second rack 29 and a slide bar 30 . One side of the second rack 29 is a toothed structure that meshes with the coaxial large gear 28 . The second rack 29 is fixedly connected to the core slider 10 , and the slide bar 30 is located on both sides of the second rack 29 .

[0044] A special-shaped guide column 35 is penetrated in the upper cavity template 1, a third rack 31 is provided on the slide seat 7, a rack slider 32 is connected to the third rack 31, a connecting gear 33 is provided on the positioning shaft 12, and the connecting gear 33 is meshed with the rack slider 32.

[0045] A special-shaped guide groove 34 is provided on the side of the upper cavity template 1, and the slide 7 is slidably arranged on the lower cavity template 3, and the two sides of the slide 7 are matched with the special-shaped guide groove 34 through bearings. After the mold is opened, the plastic product is separated by the relative movement between the slide 7 and the special-shaped guide groove 34.

[0046] Fig.12 As shown, the bullet block 15 is in the ejected state. Fig.14 As shown, the spring block 15 is in a reset state.

[0047] The mold production process is as follows:

[0048] After the injection molding cycle is over, it reaches the mold opening stage. During the mold opening action, the mold opening mechanism moves to drive the transmission mechanism to rotate. After the lower cavity template 3 stops moving, Figure 11-12 As shown, the protrusion 18 of the spring block 15 is ejected from the insert wiring port 14 under the action of the spring 16, and the first rack 24 drives the first gear 26 to rotate, thereby driving the coaxial small gear to rotate, the coaxial small gear drives the coaxial large gear 28 to rotate, and the rotation of the coaxial large gear 28 drives the second rack 29 to rotate, so as to realize the movement of the slide-out mechanism, slide the core slider 10 out, and complete the sliding out of the core;

[0049] After the mold is opened, the rack slider 32 can drive the third rack 31 and the connecting gear 33 to move under the action of the special-shaped guide column 35, so that the core slider 11 rotates 90 degrees, so that the arc core 9 rotates out of the bending of the plastic product, and then the special-shaped guide column 35 is used to drive the rack slider 32 to rise (from Figure 4 The entire slide seat 7 is lifted, so that the core slide block 2 together with the arc core is lifted, separated from the plastic product, and then demolded by the ejector pin, and finally the spring block 15 is taken away with the fixed template.

[0050] Similarly, when the mold is closed, the lower cavity template 3 hits the spring block 15 to reset it. Figure 13-14 shown.

Claims

1. An injection molding equipotential return water ring mold structure, comprising an upper cavity template (1), an upper cavity (2), a lower cavity template (3) and a lower cavity (4), wherein the upper cavity template (1) is fixedly provided with a mold opening mechanism, the upper cavity (2) is provided with an insert core (5), and the insert core (5) is provided with an insert (6); the lower cavity template (3) is provided with a slide seat (7), the slide seat (7) is provided with a linear core (8) and an arc core (9), the linear core (8) is fixed on a core slider 1 (10), the arc core (9) is provided with a core slider 2 (11), the core slider 2 (11) is fixed on the slide seat (7) through a positioning shaft (12) and a support seat (13), the core slider 1 (10) is provided with a slide-out mechanism, and the slide-out mechanism is connected to the mold opening mechanism through a transmission mechanism, characterized in that An insert wiring port (14) is provided on one side of the insert (6) facing the core slider (10), and an anti-blocking mechanism for preventing the insert wiring port (14) from being blocked is provided at the insert wiring port (14), wherein the anti-blocking mechanism is fixed on the upper cavity (2).

2. The injection molding equipotential water return ring mold structure according to claim 1 is characterized in that The anti-blocking mechanism comprises a spring block (15), a spring (16) and a plug screw (17). The two ends of the spring block (15) are in contact with the movable mold parting surface and the lower mold cavity (4) respectively. The distance from the bottom surface of the spring block (15) to its corresponding top surface gradually increases from the upper mold cavity (2) to the lower mold cavity (4). The spring block (15) is provided with a plug screw (17). The plug screw (17) is parallel to the movement direction of the spring block (15). The end of the plug screw (17) close to the upper mold cavity (2) is sleeved with a spring (16). The plug screw (17) is threadedly connected to the upper mold cavity (2). The spring block (15) is provided with a protrusion (18) whose size matches the insert wiring port (14). The protrusion (18) cooperates with the insert wiring port (14). When the mold is in the closed state, the spring block (15) is pressed by the movable mold parting surface.

3. The injection molding equipotential water return ring mold structure according to claim 2 is characterized in that A limiting ring (19) is provided inside the spring block (15), and the two ends of the limiting ring (19) are respectively a spring limiting groove (20) and a plug screw movable groove (21); the plug screw (17) comprises a plug screw body, wherein one end of the plug screw body is a threaded end, and the other end is provided with a nut (211); the part of the plug screw (17) having the nut (211) is installed in the plug screw movable groove (21), and the threaded end thereof is threadedly connected to the internal thread of the upper cavity (2).

4. The injection molding equipotential water return ring mold structure according to claim 2 is characterized in that The elastic block (15) is provided with a step surface (22) facing the insert (6), and the protrusion (18) is arranged on the step surface (22).

5. The injection molding equipotential water return ring mold structure according to claim 1 is characterized in that The mold opening mechanism comprises an L-shaped rack fixing seat (23), the rack fixing seat (23) being fixed on the fixed mold frame, a first rack (24) being fixed on the rack fixing seat (23), a group of teeth being provided on the surface of the first rack (24) being meshed with the transmission mechanism.

6. The injection molding equipotential water return ring mold structure according to claim 1 or 5, characterized in that The transmission mechanism is installed in a gear fixing seat (25) on one side of the lower cavity template (3), and the transmission mechanism comprises a first gear (26), a second gear (27) and a coaxial gear, wherein the coaxial gear comprises a coaxial large gear (28) and a coaxial small gear connected coaxially, the first gear (26) and the second gear (27) are respectively located on both sides of the coaxial small gear and mesh with the coaxial small gear respectively, the first gear (26) meshes with the first rack (24), the coaxial large gear (28) is meshed and connected with the slide-out mechanism, the first rack (24) drives the first gear (26) to rotate, thereby driving the coaxial small gear to rotate, and the coaxial small gear drives the coaxial large gear (28) to rotate, so as to realize the movement of the slide-out mechanism.

7. The injection molding equipotential water return ring mold structure according to claim 6 is characterized in that The slide-out mechanism comprises a second rack (29) and a sliding bar (30); one side of the second rack (29) is a toothed structure meshing with the coaxial large gear (28); the second rack (29) is fixedly connected to the core slider (10); and the sliding bar (30) is located on both sides of the second rack (29).

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