Simple secondary ejection device

Abstract

The utility model discloses a simple secondary ejection device. The simple secondary ejection device comprises a bottom plate, a first ejector plate module and a second ejector plate module are sequentially arranged on the top of the bottom plate from bottom to top in a stacked mode. A mold seat is arranged above the second ejector plate module, and a rear mold core is mounted in the mold seat; a clamping position for forming a product is further arranged at the top of the rear mold core, a first ejector rod is mounted on the first ejector plate module, a first insertion hole is further formed in the position, corresponding to the first ejector rod, of the bottom of the mold base, and one end of the first ejector rod movably penetrates through the second ejector plate module and then is movably inserted into the first insertion hole; the end portion of the end, movably inserted into the first inserting hole, of the first ejector rod is further provided with a limiting table, and a gap is reserved between the limiting table and the bottom of the first inserting hole. The secondary ejection mechanism is reasonable in design, simple in structure, convenient to process, stable in structure, low in cost, wide in application range and high in practicability, and the technical scheme of secondary ejection can be realized only by matching the spring with the ejection rod.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a simple secondary ejection device. Background Art

[0002] The secondary ejection structure set in conventional molds generally requires a locking mold buckle (locking machine) to be realized. However, the locking mold buckle (locking machine) has many parts, complex installation, and long assembly time. In addition, the standard locking mold buckle (locking machine) is expensive and has little versatility. At the same time, the self-made precision requirements are extremely high and the quality is uneven. Therefore, for the existing mold industry, how to design a simple and practical secondary ejection structure is a technical problem that the industry urgently needs to solve. Utility Model Content

[0003] The utility model aims to provide a simple secondary ejection device, which has reasonable design and simple structure. The technical solution of secondary ejection can be realized by only the cooperation between a spring and a ejector rod. The utility model is easy to process, has a stable structure, low cost, a wide range of applications and strong practicality.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] A simple secondary ejection device comprises a bottom plate; a first ejector plate module and a second ejector plate module are stacked in sequence from bottom to top on the top of the bottom plate; a mold base is arranged above the second ejector plate module, and a rear mold core is installed in the mold base; a clamping position for forming a product is also provided on the top of the rear mold core, a first ejector rod is installed on the first ejector plate module, and a first plug hole is also provided at the bottom of the mold base corresponding to the first ejector rod, one end of the first ejector rod is movably inserted into the first plug hole after passing through the second ejector plate module; one end of the first ejector rod movably inserted into the first plug hole A limit platform is also provided at the end, and a gap is left between the limit platform and the bottom of the first plug hole; a first spring is also sleeved on the outer wall of the first ejector rod, and the two ends of the first spring are respectively abutted against the top of the second ejector plate module and the bottom of the limit platform; a first ejector pin is also installed on the first ejector plate module, and one end of the first ejector pin moves through the second ejector plate module and the mold seat in turn, and is movably inserted in the rear mold core and contacts the bottom of the product; a second ejector pin is also installed on the second ejector plate module, and one end of the second ejector pin moves through the mold seat, and is movably inserted in the rear mold core and contacts the bottom of the product.

[0006] Furthermore, the mold base includes two square irons arranged at an interval on the top of the bottom plate, and a B plate installed on the top of the two square irons; the first ejector plate module and the second ejector plate module are both arranged between the two square irons, and the rear mold core is installed in the B plate; the first socket is opened at the bottom of the B plate.

[0007] Furthermore, a first mounting hole for connecting with an external ejector pin of an injection molding machine is formed at the bottom of the first ejector plate module, and a first through hole is formed on the bottom plate at a position corresponding to the first mounting hole.

[0008] Furthermore, the first ejector plate module includes a first ejector plate arranged on the bottom plate, a second ejector plate stacked on the first ejector plate, and a first screw for fixing the first ejector plate to the second ejector plate.

[0009] Furthermore, the second ejector plate module includes a third ejector plate arranged on the second ejector plate, a fourth ejector plate stacked on the third ejector plate, and a second screw for fixing the third ejector plate to the fourth ejector plate.

[0010] By adopting the above scheme, the beneficial effects of the utility model are:

[0011] The device has reasonable design and simple structure. It can realize the technical solution of secondary ejection only by the cooperation between the spring and the ejector rod. It is easy to process, has a stable structure, low cost, a wide range of applications and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] The accompanying drawings illustrate:

[0015] 1. Bottom plate; 2. Back mold core; 3. First ejector pin; 4. First plug hole; 5. First ejector pin; 6. Second ejector pin; 7. Square iron; 8. B plate; 11. First mounting hole; 12. First ejector pin plate; 13. Second ejector pin plate; 14. Third ejector pin plate; 15. Fourth ejector pin plate; 31. Limiting platform; 32. First spring. DETAILED DESCRIPTION

[0016] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Reference Figures 1 to 2As shown, the utility model provides a simple secondary ejection device, comprising a bottom plate 1; a first ejector plate module and a second ejector plate module are stacked in sequence from bottom to top on the top of the bottom plate 1; a mold base is arranged above the second ejector plate module, and a rear mold core 2 is installed in the mold base; a clamping position for forming a product is also provided on the top of the rear mold core 2, a first ejector rod 3 is installed on the first ejector plate module, and a first plug hole 4 is also opened at the bottom of the mold base corresponding to the first ejector rod 3, and one end of the first ejector rod 3 is movably inserted into the first plug hole 4 after passing through the second ejector plate module; the first ejector rod 3 is movably inserted into the first plug hole 4 A limit platform 31 is also provided at one end, and a gap is left between the limit platform 31 and the bottom of the first insertion hole 4; a first spring 32 is also sleeved on the outer wall of the first ejector rod 3, and the two ends of the first spring 32 are respectively abutted against the top of the second ejector plate module and the bottom of the limit platform 31; a first ejector pin 5 is also installed on the first ejector plate module, and one end of the first ejector pin 5 moves through the second ejector plate module and the mold seat in turn, and is movably inserted in the rear mold core 2 and contacts the bottom of the product; a second ejector pin 6 is also installed on the second ejector plate module, and one end of the second ejector pin 6 moves through the mold seat, and is movably inserted in the rear mold core 2 and contacts the bottom of the product.

[0018] Continue to refer to Figures 1 to 2 As shown, in one embodiment, the first ejector plate module includes a first ejector plate 12 arranged on the bottom plate 1, a second ejector plate 13 stacked on the first ejector plate 12, and a first screw for fixing the first ejector plate 12 to the second ejector plate 13; the second ejector plate module includes a third ejector plate 14 arranged on the second ejector plate 13, a fourth ejector plate 15 stacked on the third ejector plate 14, and a second screw for fixing the third ejector plate 14 to the fourth ejector plate 15. The number of the first ejector rod 3, the first ejector pin 5, and the second ejector pin 6 can be set according to actual use requirements.

[0019] At the same time, the mold base includes two square irons 7 arranged at intervals on the top of the bottom plate 1, and a B plate 8 installed on the top of the two square irons 7; the first ejector plate module and the second ejector plate module are both arranged between the two square irons 7, and the rear mold core 2 is installed in the B plate 8; the first plug hole 4 is opened at the bottom of the B plate 8; the bottom of the first ejector plate module is provided with a first mounting hole 11 for connecting with an external injection molding machine ejector rod, and a first through hole is also opened on the bottom plate 1 corresponding to the first mounting hole 11.

[0020] During operation, the ejector rod of the external injection molding machine passes through the first through hole and is installed in the first installation hole 11. The first spring 32 is initially in a compressed state. The two sets of ejector plates can be brought together through the pre-pressure of the compressed first spring 32; during the first ejection, the ejector rod pushes the two sets of ejector plates to move upward at the same time (the first ejection is achieved through the first ejector pin 5 and the second ejector pin 6) until the limit platform 31 of the first ejector rod 3 reaches the bottom of the first plug hole 4, so that the position of the first ejector plate module is limited to the position at this time; then, the ejector rod continues to eject and continues to push the second ejector plate module to move upward. The second ejector plate module will squeeze the first spring 32 and achieve secondary ejection through the second ejector pin 6. After demolding is completed, the restoring force of the first spring 32 can assist the second ejector plate module to quickly reset.

[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A simple secondary ejector device, comprising a bottom plate; a first ejector plate module and a second ejector plate module are stacked in sequence from bottom to top on the top of the bottom plate; a mold base is arranged above the second ejector plate module, and a rear mold core is installed in the mold base; a clamping position for molding a product is also provided on the top of the rear mold core, characterized in that: A first ejector rod is installed on the first ejector plate module, and a first plug hole is also opened at the bottom of the mold base corresponding to the first ejector rod. After one end of the first ejector rod movably passes through the second ejector plate module, it is movably inserted in the first plug hole; a limit platform is also provided at one end of the first ejector rod movably inserted in the first plug hole, and a gap is left between the limit platform and the bottom of the first plug hole; a first spring is also sleeved on the outer wall of the first ejector rod, and the two ends of the first spring are respectively abutted against the top of the second ejector plate module and the bottom of the limit platform; a first ejector pin is also installed on the first ejector plate module, and one end of the first ejector pin movably passes through the second ejector plate module and the mold base in turn, and is movably inserted in the rear mold core and contacts the bottom of the product; a second ejector pin is also installed on the second ejector plate module, and one end of the second ejector pin movably passes through the mold base, and is movably inserted in the rear mold core and contacts the bottom of the product.

2. The simplified secondary ejection device according to claim 1, characterized in that: The mold base includes two square irons arranged at intervals on the top of the bottom plate, and a B plate installed on the top of the two square irons; the first ejector plate module and the second ejector plate module are both arranged between the two square irons, and the rear mold core is installed in the B plate; the first plug hole is opened at the bottom of the B plate.

3. The simplified secondary ejection device according to claim 1, characterized in that: A first mounting hole for connecting with an external ejector rod of an injection molding machine is provided at the bottom of the first ejector plate module, and a first through hole is also provided at a position on the bottom plate corresponding to the first mounting hole.

4. The simplified secondary ejection device according to any one of claims 1 to 3, characterized in that: The first ejector plate module includes a first ejector plate arranged on the bottom plate, a second ejector plate stacked on the first ejector plate, and a first screw for fixing the first ejector plate to the second ejector plate.

5. The simplified secondary ejection device according to claim 4, characterized in that: The second ejector plate module includes a third ejector plate arranged on the second ejector plate, a fourth ejector plate stacked on the third ejector plate, and a second screw for fixing the third ejector plate to the fourth ejector plate.

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