Automatic water gap separating structure of injection mold
By designing a water port automatic separation structure using delay inserts and reset rods in the injection mold, the problem of the automatic separation structure of the water port in the prior art requires an independent driving structure, and the orderly separation between the product and the water port and the reduction of production costs are achieved.
Patent Information
- Application Number
- CN202421595755.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-08
AI Technical Summary
In existing injection molds, the automatic water port separation structure usually requires an independently operated driving structure, resulting in high production costs and lack of a solution to achieve water port separation without an independent driving structure.
An automatic water outlet separation structure of an injection mold is designed. By setting up a first thimble plate and a second thimble plate on the lower mold, and a rotatable delay insert and a reset rod are embedded in the second thimble plate. By using the rotation of the delay insert and the extrusion of the reset rod, the secondary ejection of the water outlet thimble and the orderly separation of the product from the water outlet are achieved.
The orderly separation of product ejection and water outlet is achieved, which reduces production costs and improves separation accuracy, avoids dependence on independent driving structures.
Smart Images
Figure CN222844665U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technology of mold field, in particular to an automatic water inlet separation structure of an injection mold. Background Art
[0002] In the injection mold, the main function of the automatic separation structure of the nozzle is to realize the automatic separation of the injection molded product and the nozzle (runner port). This structure can significantly improve production efficiency, reduce manual operations, reduce manufacturing costs, and ensure high separation accuracy.
[0003] In existing injection molds, automatic separation of the sprue is generally achieved by an independently operated driving structure driving the sprue separation structure. In order to reduce the production cost of the injection mold, it is particularly necessary for those skilled in the art to provide a driving structure that can drive the sprue separation structure without an independently operated structure. Utility Model Content
[0004] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide an automatic water inlet separation structure for an injection mold, which can be further improved.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic separation structure of a sprue of an injection mold, comprising a lower mold and a first ejector plate arranged on the lower mold and a second ejector plate arranged on the first ejector plate, a rotatable delay insert is embedded in the second ejector plate on a side opposite to the first ejector plate, a groove is provided on one side edge of the delay insert, an ejector is inserted in the groove, and as the second ejector plate moves upward, the length of one end of the ejector located at the inner cavity of the bull-horn sprue on the mold core increases.
[0006] Furthermore, a receiving groove for placing the delay insert is formed at one end of the second ejector plate opposite to the first ejector plate, and connecting ports are formed on two opposite side walls of the receiving groove, and the delay insert is plugged into the connecting port through a rotating rod.
[0007] Furthermore, the slot is a cross slot, which includes a first extension slot opened at the top of the delay insert and a second extension slot opened in the middle of the first extension slot. The first extension slot passes through the side edge of the delay insert, and the ejector pin is located at the connection between the first extension slot and the second extension slot to fix a limit block, and the limit block is clamped in the second extension slot.
[0008] Furthermore, a reset rod is overlapped on the top of the delay insert on the side opposite to the slot, and one end of the reset rod passes through the second ejector plate.
[0009] Furthermore, a downward overlapping interface is provided on the delay insert, and the reset rod is overlapped in the overlapping interface.
[0010] Furthermore, a base is embedded in a surface of the first ejector plate opposite to the second ejector plate, and the top of the base corresponds to the bottom of the delay insert.
[0011] Furthermore, threaded holes extending into the base are provided on the lower mold and the second ejector plate, and screws are threadedly connected in the threaded holes.
[0012] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the ejection pin of the sprue below the horn glue inlet is made into a secondary ejection structure to achieve orderly separation of product ejection and the sprue; firstly, a delay insert / reset rod and a rotating rod are added to the second ejector plate in the ejector panel, and then an accommodating hole is opened in the first ejector plate, and the base is fixed to the lower mold by screws, so as to achieve smooth ejection of the product and separation of the horn sprue at the same time.
[0013] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional diagram of embodiment 1 of the present utility model.
[0015] Figure 2 It is a three-dimensional diagram of the delay insert of Example 1 of the utility model.
[0016] Figure 3 It is a bottom view of the delay insert of Example 1 of the utility model.
[0017] Description of the accompanying drawings:
[0018] 10 lower mold, 20 first ejector plate, 30 second ejector plate, 31 receiving groove, 32 connecting port;
[0019] 40 delay insert, 41 slot, 411 first extension slot, 412 second extension slot, 42 ejector pin, 43 rotating rod, 44 limiting block, 45 reset rod, 46 docking interface;
[0020] 50 mold core, 51 bullhorn nozzle, 60 base, 61 threaded hole, 62 screw. DETAILED DESCRIPTION
[0021] Please refer to Figure 1-3As shown, it shows the specific structure of the preferred first embodiment of the utility model, which is an automatic separation structure of the sprue of an injection mold, including a lower mold 10, a first ejector plate 20 arranged on the lower mold 10, and a second ejector plate 30 arranged on the first ejector plate 20. A rotatable delay insert 40 is embedded in the second ejector plate 30 on one side of the first ejector plate 20. A slot 41 is provided on one side edge of the delay insert 40. An ejector pin 42 is inserted in the slot 41. As the second ejector plate 30 moves upward, the length of one end of the ejector pin 42 located in the inner cavity of the bullhorn sprue 51 on the mold core 50 increases. Through the movement of the first ejector plate 20, the delay insert 40 is separated from the second ejector plate 30, the extension insert 40 is tilted under its own weight, and the ejector pin 42 moves upward under the extrusion of the extension insert 40, thereby ejecting the mold glue in the bullhorn sprue 51.
[0022] Specifically, the second ejector plate 30 moves upward on the lower mold 10, so that the second ejector plate 30 is separated from the first ejector plate 20. After separation, the delay insert 40 in the second ejector plate 30 naturally hangs down due to the lack of extrusion. When hanging down, the ejector 42 is squeezed by the groove 41 on the delay insert 40, so that the ejector 42 moves toward the mold core 50 under extrusion and ejects the plastic part in the bullnose sprue 51 opened on the mold core 50.
[0023] like Figure 2 As shown, illustratively, a receiving groove 31 for placing the delay insert 40 is provided at one end of the second ejector plate 30 relative to the first ejector plate 20, and connecting ports 32 are provided on opposite side walls of the receiving groove 31, and the delay insert 40 is plugged into the connecting port 32 via a rotating rod 43. When the second ejector plate 30 is separated from the first ejector plate 20, the delay insert 40 in the receiving groove 31 rotates around the rotating rod 43, and the receiving groove 31 contains a residual space for the delay insert 40 to rotate, so that the ejector pin 42 on the delay insert 40 moves upward.
[0024] like Figure 2 As shown, the slot 41 is a cross slot, which includes a first extension slot 411 opened at the top of the delay insert 40, and a second extension slot 412 opened in the middle of the first extension slot 411. The first extension slot 411 passes through the side edge of the delay insert 40. The ejector pin 42 is located at the connection between the first extension slot 411 and the second extension slot 412, and a limit block 44 is fixed. The limit block 44 is clamped in the second extension slot 412. The limit block 44 is fixed at the lower end of the ejector pin 42, and the diameter of the first extension slot 411 is larger than the width of the ejector pin 42, so that the ejector pin 42 can be inserted into the first extension slot 411 or moved out of the first extension slot 411. The limit block 44 located in the second extension slot 412 is arc-shaped and gradually narrows from the inside to the outside, so that the limit block 44 can move in the second extension slot 412, while the ejector pin 42 will not be separated from the delay insert 40 due to the rotation of the delay insert 40.
[0025] like Figure 2 As shown, for example, a reset rod 45 is overlapped on the top of the delay insert 40 on the side opposite to the slot 41, and one end of the reset rod 45 passes through the second ejector plate 30. As the second ejector plate 30 moves upward, the reset rod 45 can be squeezed with the bottom wall of the mold core 50, so that the reset rod 45 moves downward under the squeeze to squeeze the delay insert 40, so that the delay insert 40 can drive the ejector 42 upward. Through this step, the secondary ejection of the plastic in the nozzle can be achieved, so that the product and the nozzle are separated in an orderly manner.
[0026] like Figure 2 As shown, exemplary, the delay insert 40 is provided with a downwardly directed docking port 46, and the reset rod 45 is docked in the docking port 46. The docking port 46 can limit the rotation direction of the delay insert 40, so that the rotation of the delay insert 40 can drive the ejector pin 42 to move upward for a second time.
[0027] like Figure 3 As shown, illustratively, a base 60 is embedded in one side of the first ejector plate 20 opposite to the second ejector plate 30 , and the top of the base 60 corresponds to the bottom of the delay insert 40 . The base 60 can support the delay insert 40 .
[0028] like Figure 3 As shown, for example, the lower mold 10 and the second ejector plate 30 are provided with a threaded hole 61 extending into the base 60, and a screw 62 is threadedly connected in the threaded hole 61. The screw 62 threadedly connected in the threaded hole 61 can limit the base 60.
[0029] In summary, the design focus of the utility model is to realize the orderly separation of product ejection and sprue by making the sprue ejector pin 42 below the horn glue inlet into a secondary ejection structure; firstly, the second ejector plate 30 in the ejector panel is added with a delay insert 40 / reset rod 45 and a rotating rod 43, and then a receiving hole is opened in the first ejector plate 20, and the base 60 is fixed to the lower mold 10 by screws 62, so as to realize the smooth ejection of the product and the separation of the horn sprue. The specific principle is that the first ejector plate 20 forms a primary ejection upward, and as the delay insert 40 rotates, the ejector pin 42 forms a secondary ejection upward.
[0030] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. An automatic sprue separation structure of an injection mold, comprising a lower mold (10), a first ejector plate (20) disposed on the lower mold (10), and a second ejector plate (30) disposed on the first ejector plate (20), characterized in that: A rotatable delay insert (40) is embedded in one side of the second ejector plate (30) opposite to the first ejector plate (20); a slot (41) is provided on one side edge of the delay insert (40); an ejector pin (42) is inserted into the slot (41); as the second ejector plate (30) moves upward, the length of one end of the ejector pin (42) located in the inner cavity of the horn sprue (51) on the mold core (50) increases.
2. The automatic water inlet separation structure of an injection mold according to claim 1, characterized in that: The second ejector plate (30) is provided with a receiving groove (31) for accommodating the delay insert (40) at one end opposite to the first ejector plate (20), and connecting ports (32) are provided on opposite side walls of the receiving groove (31), and the delay insert (40) is plugged into the connecting port (32) via a rotating rod (43).
3. The automatic water inlet separation structure of an injection mold according to claim 1, characterized in that: The slot (41) is a cross slot, and the cross slot includes a first extension slot (411) opened at the top of the delay insert (40), and a second extension slot (412) opened in the middle of the first extension slot (411), the first extension slot (411) passes through the side edge of the delay insert (40), the ejector pin (42) is located at the connection between the first extension slot (411) and the second extension slot (412), and a limit block (44) is fixed, and the limit block (44) is clamped in the second extension slot (412).
4. The automatic water inlet separation structure of an injection mold according to claim 1, characterized in that: A reset rod (45) is overlapped on the top of the delay insert (40) on one side opposite to the clamping groove (41), and one end of the reset rod (45) passes through the second ejector plate (30).
5. The automatic water inlet separation structure of an injection mold according to claim 4, characterized in that: The delay insert (40) is provided with a downwardly facing overlap port (46), and the reset rod (45) is overlapped in the overlap port (46).
6. The automatic water inlet separation structure of an injection mold according to claim 2, characterized in that: A base (60) is embedded in a surface of the first ejector plate (20) opposite to the second ejector plate (30), and the top of the base (60) corresponds to the bottom of the delay insert (40).
7. The automatic water inlet separation structure of an injection mold according to claim 6, characterized in that: The lower mold (10) and the second ejector plate (30) are provided with threaded holes (61) extending into the base (60), and the threaded holes (61) are internally threaded with screws (62).