Linkage ejection structure of injection mold

Abstract

The linkage ejection structure comprises a bottom plate and a bottom die, and a first ejector plate, a second ejector plate and a third ejector plate are sequentially arranged between the bottom plate and the bottom die from bottom to top. A driving mechanism enabling the first ejector plate, the second ejector plate and the third ejector plate to be close to or away from the bottom die is arranged between the third ejector plate and the bottom die, a plurality of ejector pins are arranged on the first ejector plate, the second ejector plate and the third ejector plate, and a first locking assembly is arranged between the first ejector plate and the second ejector plate. The bottom plate is provided with a first unlocking piece corresponding to the first locking assembly, a second locking assembly is arranged between the second ejector plate and the third ejector plate, and the bottom die is provided with a second unlocking piece corresponding to the second locking assembly. The locking assemblies and the unlocking pieces are arranged between the adjacent ejector plates, so that the three ejector plates can be controlled to move by only one driving mechanism, and the problems of bloated equipment and complex structure are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, and in particular to a linkage ejection structure of an injection mold. Background Art

[0002] A mold is a tool used to make molded objects. It mainly realizes the processing of the object's shape by changing the physical state of the molding material. In the process of mold opening, for products with simple shapes, generally only one ejection by the mold's ejector device is required to remove the molded product from the mold. When the local structure of the ejected product is more complex, multiple sets of ejectors are required to perform multiple ejections to achieve the purpose of removing the product.

[0003] The existing mold multiple ejection structure has the problem of bloated equipment and complex structure because multiple ejector plates are driven by independent driving mechanisms. Utility Model Content

[0004] The utility model aims at the deficiencies in the prior art and provides a linkage ejection structure of an injection mold, wherein locking components and unlocking components are provided between adjacent ejector plates, and only one driving mechanism is needed to control the activities of three ejector plates, thereby simplifying the equipment structure, reducing the equipment volume and reducing the equipment cost, and solving the problems of bloated equipment and complex structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A linkage ejection structure of an injection mold comprises a bottom plate and a bottom mold, wherein a first ejector plate, a second ejector plate and a third ejector plate are sequentially arranged between the bottom plate and the bottom mold from bottom to top, a driving mechanism is arranged between the third ejector plate and the bottom mold to make the first ejector plate, the second ejector plate and the third ejector plate approach or move away from the bottom mold, a plurality of ejectors are arranged on the first ejector plate, the second ejector plate and the third ejector plate, a first locking assembly is arranged between the first ejector plate and the second ejector plate, a first unlocking piece corresponding to the first locking assembly is arranged on the bottom plate, a second locking assembly is arranged between the second ejector plate and the third ejector plate, and a second unlocking piece corresponding to the second locking assembly is arranged on the bottom mold; by arranging locking assemblies and unlocking pieces between adjacent ejector plates, only one driving mechanism is needed to control the activities of the three ejector plates, thereby simplifying the equipment structure, reducing the equipment volume and reducing the equipment cost.

[0007] As a preferred solution, the driving mechanism includes a hydraulic cylinder fixedly arranged on the peripheral side of the bottom mold, and the output end of the hydraulic cylinder is clamped to the third ejector plate through a clamping piece.

[0008] As a preferred solution, the first locking assembly includes a first locking piece arranged on the peripheral side of the second ejector plate and extending downward, and a first locking block telescopically arranged on the peripheral side of the first ejector plate, the first ejector plate is provided with a first spring that makes the first locking block tend to protrude from the first ejector plate, the first locking piece has a first hook portion that hooks the first locking block at one end close to the base plate, and the first unlocking piece has a convex portion that pushes the first locking block away from the first hook portion at one end away from the base plate.

[0009] As a preferred solution, a first slope is provided on the upper side surface of the outer end of the first locking block protruding from the first ejector plate, and a third slope corresponding to the first slope is provided on one end of the first hook portion close to the bottom plate.

[0010] As a preferred solution, a second slope is provided on the lower side surface of the outer end of the first locking block protruding from the first ejector plate, and fourth slopes corresponding to the first slope and the second slope are provided on both upper and lower sides of the protrusion.

[0011] As a preferred solution, the second locking assembly includes a second locking piece arranged on the peripheral side of the second ejector plate and extending upward, and a second locking block telescopically arranged on the peripheral side of the third ejector plate, the third ejector plate is provided with a second spring which makes the second locking block tend to protrude from the third ejector plate, the second locking piece has a second hook portion hooked on the second locking block at one end close to the bottom mold, and the second unlocking piece has a pressing portion at one end away from the bottom mold which pushes the second locking block away from the second hook portion.

[0012] As a preferred solution, the third ejector plate is provided with a cover plate for fixing the second locking block.

[0013] As a preferred solution, a fifth slope is provided on the upper side surface of the outer end of the second locking block protruding from the third ejector plate, and a seventh slope corresponding to the sixth slope is provided on the side of the second hook portion close to the bottom mold.

[0014] As a preferred solution, a sixth slope is provided on the lower side surface of the outer end of the second locking block protruding from the third ejector plate, and an eighth slope is provided on the pressing portion corresponding to the fifth slope.

[0015] As a preferred solution, a first resistance sensing member is disposed on a peripheral side of the third ejector plate, and a second resistance sensing member corresponding to the first resistance sensing member is disposed on a peripheral side of the bottom mold.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, a driving mechanism is provided between the third ejector plate and the bottom mold to make the first ejector plate, the second ejector plate and the third ejector plate approach or move away from the bottom mold, a first locking assembly is provided between the first ejector plate and the second ejector plate, the bottom plate is provided with a first unlocking piece corresponding to the first locking assembly, a second locking assembly is provided between the second ejector plate and the third ejector plate, and the bottom mold is provided with a second unlocking piece corresponding to the second locking assembly. Only one driving mechanism is needed to control the activities of the three ejector plates, thereby simplifying the equipment structure, reducing the equipment volume and reducing the equipment cost.

[0017] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly structure of an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the exploded structure of the first locking assembly and the first unlocking member of the embodiment of the utility model;

[0020] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 4 It is a schematic diagram of the exploded structure of the second locking assembly and the second unlocking member of the embodiment of the utility model;

[0022] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 6 It is a structural schematic diagram of the first locking block of an embodiment of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the second locking block of an embodiment of the utility model.

[0025] Description of the accompanying drawings:

[0026] 10-bottom plate; 11-first ejector plate; 12-second ejector plate;

[0027] 13-third ejector plate; 14-bottom mold; 15-first resistance sensing member;

[0028] 16-second resistance sensing member; 17-cover plate; 18-hydraulic cylinder;

[0029] 19-clip member; 20-first unlocking member; 21-convex portion;

[0030] 22- fourth slope; 23- first locking block; 24- first slope;

[0031] 25-second slope; 26-first locking element; 27-first hook;

[0032] 28-third slope; 30-second unlocking member; 31-pressing portion;

[0033] 32-eighth slope; 33-second locking block; 34-fifth slope;

[0034] 35-sixth slope; 36-second locking member; 37-second hook;

[0035] 38-Seventh slope. DETAILED DESCRIPTION

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] like Figure 1-7As shown, the utility model discloses a linkage ejection structure of an injection mold, comprising a bottom plate 10 and a bottom mold 14, wherein a first ejector plate 11, a second ejector plate 12 and a third ejector plate 13 are sequentially arranged between the bottom plate 10 and the bottom mold 14 from bottom to top, and a driving mechanism is arranged between the third ejector plate 13 and the bottom mold 14 to make the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 approach or move away from the bottom mold 14, and a connecting rod (not shown in the figure) is further arranged between the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 so that the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 can be connected in an openable and closable manner; the driving mechanism comprises a hydraulic cylinder 18 fixedly arranged on the peripheral side of the bottom mold 14, and the output end of the hydraulic cylinder 18 is clamped to the third ejector plate 13 through a clamping member 19, and a plurality of ejector rods (not shown in the figure) are arranged on the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13, and the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 are respectively provided with a plurality of ejector rods (not shown in the figure), ... A first locking assembly is provided between an ejector plate 11 and a second ejector plate 12, a first unlocking piece 20 corresponding to the first locking assembly is provided on the bottom plate 10, a second locking assembly is provided between the second ejector plate 12 and the third ejector plate 13, and a second unlocking piece 30 corresponding to the second locking assembly is provided on the bottom mold 14; a driving mechanism is provided between the third ejector plate 13 and the bottom mold 14 to make the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 approach or move away from the bottom mold 14, a first locking assembly is provided between the first ejector plate 11 and the second ejector plate 12, a first unlocking piece 20 corresponding to the first locking assembly is provided on the bottom plate 10, a second locking assembly is provided between the second ejector plate 12 and the third ejector plate 13, and a second unlocking piece 30 corresponding to the second locking assembly is provided on the bottom mold 14, and only one driving mechanism is needed to control the activities of the three ejector plates, thereby simplifying the equipment structure, reducing the equipment volume and reducing the equipment cost.

[0039] The first locking assembly includes a first locking piece 26 which is arranged on the peripheral side of the second ejector plate 12 and extends downward, and a first locking block 23 which is telescopically arranged on the peripheral side of the first ejector plate 11. The first ejector plate 11 is provided with a first spring which makes the first locking block 23 have a tendency to protrude from the first ejector plate 11. The first locking piece 26 has a first hook 27 which hooks the first locking block 23 at one end close to the bottom plate 10, and the first unlocking piece 20 has a convex portion 21 which pushes the first locking block 23 away from the first hook 27 at one end away from the bottom plate 10. The first spring lifts up the first locking block 23, and the first hook 27 hooks the first locking block 23, so that the first ejector plate 11 and the second ejector plate 12 are locked together. As the first ejector plate 11 and the second ejector plate 12 rise, the convex portion 21 of the first unlocking piece 20 presses the first locking block 23 into the first ejector plate 11, so that the first locking block 23 is separated from the first hook 27, thereby realizing the separation of the first ejector plate 11 and the second ejector plate 12.

[0040] The first locking block 23 is provided with a first slope 24 on the upper side surface of the outer end protruding from the first ejector plate 11, and the first hook 27 is provided with a third slope 28 corresponding to the first slope 24 at one end close to the bottom plate 10; the first locking block 23 is provided with second slopes 25 on the left and right sides of the lower side surface of the outer end protruding from the first ejector plate 11, and the upper and lower sides of the protrusion 21 are provided with fourth slopes 22 corresponding to the first slope 24 and the second slope 25. The first slope 24 cooperates with the third slope 28, and the first slope 24 and the second slope 25 cooperate with the fourth slope 22, so that the first locking piece 26 and the first locking block 23 are engaged and disengaged, and the first locking block 23 and the first unlocking piece 20 are pressed together, thereby reducing the wear of the first locking piece 26, the first locking block 23 and the first unlocking piece 20, and improving the service life of the equipment.

[0041] The second locking assembly includes a second locking piece 36 which is arranged on the peripheral side of the second ejector plate 12 and extends upward, and a second locking block 33 which is telescopically arranged on the peripheral side of the third ejector plate 13. The third ejector plate 13 is provided with a second spring which makes the second locking block 33 have a tendency to protrude from the third ejector plate 13. The second locking piece 36 has a second hook portion 37 which hooks the second locking block 33 at one end close to the bottom mold 14, and the second unlocking piece 30 has a pressing portion 31 which pushes the second locking block 33 away from the second hook portion 37 at one end away from the bottom mold 14. The second spring lifts up the second locking block 33, and the second hook portion 37 hooks the second locking block 33, so that the second ejector plate 12 and the third ejector plate 13 are locked together. As the second ejector plate 12 and the third ejector plate 13 rise, the pressing portion 31 of the second unlocking piece 30 presses the second locking block 33 into the third ejector plate 13, so that the second locking block 33 is separated from the second hook portion 37, thereby realizing the separation of the second ejector plate 12 and the third ejector plate 13.

[0042] The third ejector plate 13 is provided with a cover plate 17 for fixing the second locking block 33 . The second locking block 33 is fixed by the cover plate 17 , so that the second locking block 33 can be quickly maintained and replaced.

[0043] The second locking block 33 protrudes from the third ejector plate 13 and is provided with fifth slopes 34 on both sides of the upper side surface of the outer end thereof; the second hook portion 37 is provided with a seventh slope 38 corresponding to the sixth slope 35 on the side close to the bottom mold 14; the second locking block 33 is provided with a sixth slope 35 in the middle of the lower side surface of the outer end thereof protruding from the third ejector plate 13; the pressing portion 31 is provided with an eighth slope 32 corresponding to the fifth slope 34; the sixth slope 35 cooperates with the seventh slope 38, and the fifth slope 34 cooperates with the eighth slope 32, so that the second locking member 36 and the second locking block 33 are engaged and disengaged, and the second locking block 33 and the second unlocking member 30 are pressed together, thereby reducing the wear of the second locking member 36, the second locking block 33 and the second unlocking member 30, and improving the service life of the equipment.

[0044] A first resistance sensing member 15 is provided on the circumference of the third ejector plate 13, and a second resistance sensing member 16 corresponding to the first resistance sensing member 15 is provided on the circumference of the bottom die 14; a cover plate 17 is provided between the third ejector plate 13 and the bottom die 14 to avoid contact between the third ejector plate 13 and the bottom die 14 during pressing, and the first resistance sensing member 15 and the second resistance sensing member 16 prevent the third ejector plate 13 and the bottom die 14 from being damaged.

[0045] The method of using the utility model is as follows: the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 are moved close to the bottom mold 14 by the hydraulic cylinder 18, and the first locking block 23 on the first ejector plate 11 gradually approaches the convex portion 21 of the first unlocking member 20 as it rises, and the convex portion 21 presses the first locking block 23 into the first ejector plate 11 and disengages from the first hook portion 27, so that the first ejector plate 11 is disengaged from the second ejector plate 12, and one ejection is completed. The first ejector plate 11 continues to rise with the second ejector plate 12 and the third ejector plate 13 under the action of the connecting rod, and the third ejector plate 13 is moved forward. The second locking block 33 of 13 rises and gradually approaches the pressing portion 31 of the second unlocking piece 30. The pressing portion 31 presses the second locking block 33 into the third ejector plate 13 and disengages from the second hook portion 37, so that the second ejector plate 12 is disengaged from the third ejector plate 13, completing the secondary ejection. The second ejector plate 12 is suspended under the third ejector plate 13 by the action of the connecting rod, and the hydraulic cylinder drives the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 to return to their original positions. The first hook portion 27 clamps the first locking block 23, and the second hook portion 37 clamps the second locking block 33, waiting for the next ejection.

[0046] In summary, the utility model provides a driving mechanism between the third ejector plate 13 and the bottom mold 14 to make the first ejector plate 11, the second ejector plate 12 and the third ejector plate 13 approach or move away from the bottom mold 14, a first locking assembly is provided between the first ejector plate 11 and the second ejector plate 12, the bottom plate 10 is provided with a first unlocking piece 20 corresponding to the first locking assembly, a second locking assembly is provided between the second ejector plate 12 and the third ejector plate 13, and the bottom mold 14 is provided with a second unlocking piece 30 corresponding to the second locking assembly, so as to realize linkage drive control, eliminate the need to set the ejection mechanism in the mold, and set a blocking structure in the mold, thereby simplifying the equipment structure and achieving the effect of facilitating later maintenance.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A linkage ejection structure of an injection mold, It is characterized in that The invention comprises a bottom plate and a bottom mold, wherein a first ejector plate, a second ejector plate and a third ejector plate are sequentially arranged between the bottom plate and the bottom mold from bottom to top, a driving mechanism for making the first ejector plate, the second ejector plate and the third ejector plate approach or move away from the bottom mold is arranged between the third ejector plate and the bottom mold, a plurality of ejectors are arranged on the first ejector plate, the second ejector plate and the third ejector plate, a first locking assembly is arranged between the first ejector plate and the second ejector plate, a first unlocking piece corresponding to the first locking assembly is arranged on the bottom plate, a second locking assembly is arranged between the second ejector plate and the third ejector plate, and a second unlocking piece corresponding to the second locking assembly is arranged on the bottom mold.

2. The linkage ejection structure of an injection mold according to claim 1, It is characterized in that The driving mechanism comprises a hydraulic cylinder fixedly arranged on the peripheral side of the bottom mold, and the output end of the hydraulic cylinder is clamped with the third ejector plate through a clamping piece.

3. The linkage ejection structure of an injection mold according to claim 1, It is characterized in that The first locking assembly includes a first locking piece arranged on the peripheral side of the second ejector plate and extending downward, and a first locking block telescopically arranged on the peripheral side of the first ejector plate, the first ejector plate is provided with a first spring that makes the first locking block have a tendency to protrude from the first ejector plate, the first locking piece has a first hook portion hooked on the first locking block at one end close to the base plate, and the first unlocking piece has a protrusion at one end away from the base plate that pushes the first locking block away from the first hook portion.

4. The linkage ejection structure of an injection mold according to claim 3, It is characterized in that A first slope is disposed on the upper side surface of the outer end of the first locking block protruding from the first ejector plate, and a third slope corresponding to the first slope is disposed on one end of the first hook portion close to the bottom plate.

5. The linkage ejection structure of an injection mold according to claim 4, It is characterized in that A second slope is provided on the lower side surface of the outer end of the first locking block protruding from the first ejector plate, and fourth slopes corresponding to the first slope and the second slope are provided on both upper and lower sides of the convex portion.

6. The linkage ejection structure of an injection mold according to claim 1, It is characterized in that The second locking assembly includes a second locking piece arranged on the peripheral side of the second ejector plate and extending upward, and a second locking block telescopically arranged on the peripheral side of the third ejector plate, the third ejector plate is provided with a second spring that makes the second locking block have a tendency to protrude from the third ejector plate, the second locking piece has a second hook portion hooked on the second locking block at one end close to the bottom mold, and the second unlocking piece has a pressing portion that pushes the second locking block away from the second hook portion at one end away from the bottom mold.

7. The linkage ejection structure of an injection mold according to claim 6, It is characterized in that The third ejector plate is provided with a cover plate for fixing the second locking block.

8. The linkage ejection structure of an injection mold according to claim 6, It is characterized in that A fifth slope is arranged on the upper side surface of the outer end of the second locking block protruding from the third ejector plate, and a seventh slope corresponding to the sixth slope is arranged on the side of the second hook portion close to the bottom mold.

9. The linkage ejection structure of an injection mold according to claim 8, It is characterized in that The lower side surface of the outer end of the second locking block protruding from the third ejector plate is provided with a sixth slope, and the pressing portion is provided with an eighth slope corresponding to the fifth slope.

10. The linkage ejection structure of an injection mold according to claim 1, It is characterized in that A first conflict sensing member is disposed on the peripheral side of the third ejector plate, and a second conflict sensing member corresponding to the first conflict sensing member is disposed on the peripheral side of the bottom mold.

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