Mold with front mold, sliding block, rear mold and push plate for hot runner

Abstract

The utility model belongs to the technical field of molds, and discloses a hot runner front mold slider rear mold push plate mold which comprises a bottom plate, a first mold plate, a push plate, a second mold plate and a hot runner plate, the bottom plate is fixedly arranged, the first mold plate is horizontally fixed above the bottom plate, and the second mold plate is horizontally arranged above the first mold plate. A push plate is horizontally arranged between the first mold plate and the second mold plate, a hot runner plate is horizontally arranged above the second mold plate, an ejector pin bottom plate is horizontally arranged between the bottom plate and the first mold plate, an ejector pin plate is horizontally fixed to the top face of the ejector pin bottom plate, and an ejector pin is vertically fixed to the top face of the ejector pin plate. And ejector pins on the ejector pin plate penetrate through the first template and are inserted into the push plate. The utility model overcomes the problems that the threaded parts exist in the die cavities of the upper and lower dies when the upper and lower dies are opened, the threaded parts need to be taken out from the die cavities of the upper and lower dies one by one, the later stripping is inconvenient, and the stripping efficiency of the threaded parts is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a hot runner front mold slider and rear mold push plate mold. Background Art

[0002] Threaded parts are commonly used components. When manufacturing threaded parts, they need to be prepared using a casting mold. During the preparation, the upper and lower molds are combined to form a molding cavity. The molten plastic melt is added from the hot runner, and the molten plastic melt flows into the molding cavity. After cooling, threaded parts are formed. Then the upper and lower molds are opened, and the formed threaded parts are taken out from the upper and lower molds.

[0003] However, when the above-mentioned threaded parts are cast, the formed threaded parts will generate a clamping force due to their own tensioning force. The clamping force of the threaded parts will be tightly attached to the mold cavity. The threaded parts will be affected by their own clamping force. When the upper and lower molds are opened, the threaded parts will exist in the mold cavities of the upper and lower molds. The threaded parts need to be taken out from the mold cavities of the upper and lower molds one by one, which makes it inconvenient to remove the materials later, affecting the efficiency of removing the threaded parts. Utility Model Content

[0004] The utility model aims to provide a hot runner front mold slider and rear mold push plate mold, aiming to improve the above-mentioned problems.

[0005] The utility model is achieved in this way:

[0006] A hot runner front mold slider rear mold push plate mold, comprising a bottom plate, a first template, a push plate, a second template and a hot runner plate, the bottom plate is fixedly arranged, and the first template is horizontally fixed above the bottom plate, the second template is horizontally arranged above the first template, and the push plate is horizontally arranged between the first template and the second template, the hot runner plate is horizontally arranged above the second template, an ejector bottom plate is horizontally arranged between the bottom plate and the first template, and an ejector plate is horizontally fixed on the top surface of the ejector bottom plate, an ejector is vertically fixed on the top surface of the ejector plate, and the ejector on the ejector plate passes through the first template and is inserted into the push plate, the hot runner plate and the second template are slidably connected by a limit screw, and a spring is sleeved on the limit screw, and the two ends of the spring are respectively fixed on the adjacent end surfaces of the hot runner plate and the second template.

[0007] Furthermore, a panel is fixed on the top surface of the hot runner plate, and a heat insulation plate is fixed on the top surface of the panel.

[0008] Furthermore, a hot runner is arranged on the top surface of the hot runner plate, and the bottom end of the hot runner penetrates the hot runner plate and extends downward.

[0009] Furthermore, a hot runner bushing is provided on the bottom surface of the hot runner plate, and the hot runner bushing is inserted into the mold cavity of the second mold plate, and the hot runner bushing is fixed to the bottom surface of the hot runner plate by screws.

[0010] Furthermore, a nylon buckle is vertically arranged on the bottom surface of the second template, and two ends of the nylon buckle are respectively fixed on the bottom surface of the second template and the top surface of the push plate.

[0011] Furthermore, a rear mold core and a front mold core are respectively arranged on the top surface of the push plate and the bottom surface of the second template, a front mold inlay pin is vertically fixed on the bottom surface of the second template, and a sliding block is arranged between the second template and the front mold core.

[0012] Furthermore, a threaded core is provided through the front mold core, an internal thread undercut is provided on the lower side of the inner wall of the threaded core, and an external thread undercut is provided on the upper side of the outer wall of the threaded core.

[0013] Compared with the prior art, the utility model has the following beneficial effects: during use, the bottom plate, the first template, the push plate, the second template and the hot runner plate which are arranged in sequence in the vertical direction are sequentially combined to form a threaded part casting cavity; the closed hot runner plate uses a limit screw to guide the spring deformation of the second template, and uses the front mold inlay needle on the second template to extrude the slider at the end of the threaded core of the front mold core, so that the plastic melt is added from the hot runner on the hot runner plate, and the plastic melt is filled in the threaded core of the rear mold core and the front mold core of the push plate and the second template; when the mold is opened after cooling, when the second template is pulled away from the first template, the second template is loosened under the guidance of the limit screw on the hot runner plate, and the spring is used to extrude the slider at the end of the threaded core of the front mold core. The deformation force pushes the second template and the hot runner plate to separate. When the movable second template is opened, the slider on the second template pushes the formed threaded parts to leave the external thread undercut and remain in the mold cavity of the first template. Then the injection molding machine is started to push the ejector plate and the push plate to move, and the formed threaded parts are discharged from the internal thread undercut of the rear mold core, completing the demolding operation of the threaded parts, thereby avoiding the threaded parts from existing in the mold cavities of the upper and lower molds when the upper and lower molds are opened. When opening the mold, the threaded parts are pushed into the lower mold, and then the push plate is used to push the threaded parts to discharge the threaded parts. There is no need to take the threaded parts out of the mold cavities of the upper and lower molds one by one, which is convenient for later material removal and ensures the efficiency of threaded part removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is an overall cross-sectional view of the utility model;

[0016] Figure 2 yes Figure 1 A is an enlarged schematic diagram;

[0017] Figure 3 It is a cross-sectional view of the utility model in the first mold opening state;

[0018] Figure 4 It is a schematic diagram of the structure of the utility model in the second mold opening state;

[0019] Figure 5 This is a schematic diagram of the structure of the utility model in the material pushing state;

[0020] Figure 6 It is a front view of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the hot runner bushing of the utility model.

[0022] In the figure: 1, bottom plate; 2, ejector bottom plate; 3, ejector plate; 4, first template; 5, push plate; 6, second template; 7, hot runner plate; 71, hot runner bushing; 8, panel; 9, insulation board; 10, threaded core; 11, rear mold core; 12, front mold core; 13, slider; 14, front mold insert; 15, internal thread undercut; 16, external thread undercut; 17, limit screw; 171, spring; 18, hot runner; 181, screw; 19, nylon buckle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a hot runner front mold slider rear mold push plate mold includes a bottom plate 1, a first mold plate 4, a push plate 5, a second mold plate 6 and a hot runner plate 7. The bottom plate 1 is fixedly arranged, and the first mold plate 4 is horizontally fixed above the bottom plate 1, the second mold plate 6 is horizontally arranged above the first mold plate 4, and the push plate 5 is horizontally arranged between the first mold plate 4 and the second mold plate 6, and the hot runner plate 7 is horizontally arranged above the second mold plate 6. An ejector bottom plate 2 is horizontally arranged between the bottom plate 1 and the first mold plate 4, and an ejector plate 3 is horizontally fixed on the top surface of the ejector bottom plate 2, and an ejector is vertically fixed on the top surface of the ejector plate 3, and the ejector on the ejector plate 3 penetrates the first mold plate 4 and is inserted into the push plate 5. The hot runner plate 7 and the second mold plate 6 are slidably connected by a limit screw 17, and a spring 171 is sleeved on the limit screw 17, and the two ends of the spring 171 are respectively fixed on the adjacent end surfaces of the hot runner plate 7 and the second mold plate 6. A panel 8 is fixed on the top surface of the hot runner plate 7, and a heat insulation plate 9 is fixed on the top surface of the panel 8. A hot runner 18 is arranged on the top surface of the hot runner plate 7, and the bottom end of the hot runner 18 extends downward through the hot runner plate 7. A hot runner bushing 71 is arranged on the bottom surface of the hot runner plate 7, and the hot runner bushing 71 is inserted into the mold cavity of the second mold plate 6, and the hot runner bushing 71 is fixed to the bottom surface of the hot runner plate 7 by screws 181. The hot runner bushing 71 is integrated with the shovel base, which saves the mold production cycle and cost, and saves the injection runner production cost.A nylon buckle 19 is vertically arranged on the bottom surface of the second template 6, and the two ends of the nylon buckle 19 are respectively fixed on the bottom surface of the second template 6 and the top surface of the push plate 5. A rear mold core 11 and a front mold core 12 are respectively arranged on the top surface of the push plate 5 and the bottom surface of the second template 6. A front mold insert pin 14 is vertically fixed on the bottom surface of the second template 6, and a slider 13 is arranged between the second template 6 and the front mold core 12. A threaded core 10 is opened through the front mold core 12, and an internal thread undercut 15 is opened on the lower side of the inner wall of the threaded core 10. The outer wall of the threaded core 10 is provided with an external thread undercut 16. In use, the bottom plate 1, the first template 4, the push plate 5, the second template 6 and the hot runner plate 7 are sequentially combined in the vertical direction to form a threaded casting cavity. The closed hot runner plate 7 uses the limit screw 17 to guide the spring 171 on the second template 6 to deform, and the front mold insert pin 14 on the second template 6 is used to squeeze the slider at the end of the threaded core 10 of the front mold core 12 to push the plastic melt from the hot runner 18 on the hot runner plate 7. The plastic melt is added, and the threaded core 10 of the rear mold core 11 and the front mold core 12 of the push plate 5 and the second mold plate 6 is filled. When the mold is opened after cooling, when the second mold plate 6 is pulled away from the first mold plate 4, the second mold plate 6 is loosened under the guidance of the limit screw 17 on the hot runner plate 7, and the deformation force of the spring 171 is used to push the second mold plate 6 and the hot runner plate 7 to separate. When the moving second mold plate 6 is opened, the slider 13 on the second mold plate 6 pushes the formed threaded part to leave the external thread undercut 16 and remain in the first mold plate 4. The mold cavity is then started, and the injection molding machine is driven to push the ejector plate 3 and the push plate 5 to move, and the formed threaded parts are discharged from the internal thread undercut 15 of the rear mold core 11, completing the demoulding operation of the threaded parts, thereby avoiding the threaded parts from existing in the mold cavities of the upper and lower molds when the upper and lower molds are opened. When the molds are opened, the threaded parts are pushed into the lower mold, and then the push plate 5 is used to push the threaded parts to discharge the threaded parts. There is no need to take the threaded parts out of the mold cavities of the upper and lower molds one by one, which is convenient for later material removal and ensures the efficiency of threaded part removal.

[0025] Working principle: In use, the bottom plate 1, the first template 4, the push plate 5, the second template 6 and the hot runner plate 7 which are arranged in sequence in the vertical direction are sequentially combined to form a threaded casting cavity. The closed hot runner plate 7 uses the limit screw 17 to guide the spring 171 on the second template 6 to deform, and the front mold insert pin 14 on the second template 6 is used to squeeze the slider at the end of the threaded core 10 of the front mold core 12, and the plastic melt is added from the hot runner 18 on the hot runner plate 7. The plastic melt is filled in the push plate 5 and the rear mold core 11 of the second template 6 and the threaded core 10 of the front mold core 12. When the mold is opened after cooling, when the second template 6 is pulled away from the first template 4, the second template 6 is guided downward by the limit screw 17 on the hot runner plate 7 and loosened, and the deformation force of the spring 171 is used to push the second template 6 and the hot runner plate 7 to separate. When the moving second template 6 is opened, the slider 13 on the second template 6 pushes the molded threaded parts to leave the external thread undercut 16 and remain in the mold cavity of the first template 4, and then the injection molding machine is started to push the ejector plate 3 and the push plate 5 to move, and the molded threaded parts are discharged from the internal thread undercut 15 of the rear mold core 11, completing the demolding operation of the threaded parts.

[0026] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hot runner front mold slider rear mold push plate mold, characterized in that: The invention comprises a bottom plate (1), a first template (4), a push plate (5), a second template (6) and a hot runner plate (7), wherein the bottom plate (1) is fixedly arranged, and the first template (4) is horizontally fixed above the bottom plate (1), the second template (6) is horizontally arranged above the first template (4), and the push plate (5) is horizontally arranged between the first template (4) and the second template (6), the hot runner plate (7) is horizontally arranged above the second template (6), and the bottom plate (1) and the first template (4) are horizontally arranged between the bottom plate (1) and the first template (4). An ejector base plate (2) is arranged horizontally, and an ejector plate (3) is horizontally fixed on the top surface of the ejector base plate (2), an ejector is vertically fixed on the top surface of the ejector plate (3), and the ejector on the ejector plate (3) passes through the first template (4) and is inserted into the push plate (5), the hot runner plate (7) and the second template (6) are slidably connected by a limit screw (17), and a spring (171) is sleeved on the limit screw (17), and the two ends of the spring (171) are respectively fixed on the adjacent end surfaces of the hot runner plate (7) and the second template (6).

2. A hot runner front mold slider and rear mold push plate mold according to claim 1, characterized in that: A panel (8) is fixed on the top surface of the hot runner plate (7), and a heat insulation plate (9) is fixed on the top surface of the panel (8).

3. A hot runner front mold slider rear mold push plate mold according to claim 2, characterized in that: A hot runner (18) is arranged on the top surface of the hot runner plate (7), and the bottom end of the hot runner (18) penetrates the hot runner plate (7) and extends downward.

4. A hot runner front mold slider rear mold push plate mold according to claim 3, characterized in that: A hot runner bushing (71) is provided on the bottom surface of the hot runner plate (7), and the hot runner bushing (71) is inserted into the mold cavity of the second mold plate (6), and the hot runner bushing (71) is fixed to the bottom surface of the hot runner plate (7) by means of screws (181).

5. A hot runner front mold slider rear mold push plate mold according to claim 4, characterized in that: A nylon buckle (19) is vertically arranged on the bottom surface of the second template (6), and two ends of the nylon buckle (19) are respectively fixed on the bottom surface of the second template (6) and the top surface of the push plate (5).

6. A hot runner front mold slider and rear mold push plate mold according to claim 1, characterized in that: A rear mold core (11) and a front mold core (12) are respectively arranged on the top surface of the push plate (5) and the bottom surface of the second mold plate (6), a front mold insert pin (14) is vertically fixed on the bottom surface of the second mold plate (6), and a sliding block (13) is arranged between the second mold plate (6) and the front mold core (12).

7. A hot runner front mold slider rear mold push plate mold according to claim 6, characterized in that: The front mold core (12) is provided with a threaded core (10) extending therethrough, and the lower side of the inner wall of the threaded core (10) is provided with an internal threaded undercut (15), and the upper side of the outer wall of the threaded core (10) is provided with an external threaded undercut (16).

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