Inclined ejection mechanism of die

Abstract

The utility model discloses an oblique ejection mechanism of a mold, and belongs to the technical field of injection molds. The mold mainly comprises a base and an upper mold, a pair of supporting plates are installed at the top of the base, a lower mold is installed at the tops of the supporting plates, the upper mold is located above the lower mold, a lower mold core is installed in the lower mold, an upper mold core is installed in the upper mold, and the lower mold core and the upper mold core are combined to form a forming cavity; an ejector rod mechanism and a pair of angle ejector rods are installed on the top of the lifting plate, the angle ejector rods are both connected with the lower die in a sliding mode, and back-off grooves are formed in the angle ejector rods. According to the oblique ejection mechanism of the mold, when the ejection rod body synchronously ascends along with the lifting plate in the oblique ejection process, the supporting rods can rotate after losing blocking and abut against the oblique ejection rods on the two sides, so that supporting is provided for the oblique ejection rods on the two sides, the probability that the oblique ejection rods are broken or deformed under the action of long-term gravity is reduced, and the service life of the oblique ejection mechanism is prolonged. The service life of the angle ejector rod is prolonged, and the maintenance cost of the mold is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and in particular to a mold oblique ejection mechanism. Background Art

[0002] Molds refer to various tools used in industrial production to produce desired products through methods such as injection molding, blow molding, extrusion, die-casting, forging, smelting, and stamping. After the injection mold is used to mold a plastic part, if the part has inclined ribs, flanges, or curved structures, an inclined ejector mechanism is required to facilitate smooth demolding of the part.

[0003] In the prior art, the vertical movement of the mold during mold opening is converted into horizontal movement by driving the inclined ejector rod to move, thereby achieving lateral core pulling and ensuring that the plastic product can be smoothly demolded from the mold. However, since the inclined ejector rod is set at an angle and bears the gravity of the product, the inclined ejector rod is prone to breakage or deformation under the action of gravity for a long time, thereby reducing the service life and increasing the maintenance cost of the mold.

[0004] Therefore, it is necessary to provide a mold oblique ejection mechanism to solve the above problems.

[0005] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute prior art. Utility Model Content

[0006] Based on the above-mentioned problems existing in the prior art, the problem to be solved by this application is: to provide a mold oblique ejection mechanism. During the oblique ejection process, when the ejector rod body rises synchronously with the lifting plate, the support rod can rotate after losing the obstruction and abut against the inclined ejectors on both sides, thereby providing support for the inclined ejectors on both sides, reducing the probability of the inclined ejectors breaking or deforming under the action of gravity for a long time, improving the service life of the inclined ejectors, and reducing the maintenance cost of the mold.

[0007] The technical solution adopted by the present application to solve its technical problem is: a mold oblique ejection mechanism, comprising a base and an upper mold, a pair of support plates are installed on the top of the base, a lower mold is installed on the top of the pair of support plates, the upper mold is located above the lower mold, a lower core is installed inside the lower mold, an upper core is installed inside the upper mold, the lower core and the upper core are combined to form a molding cavity, a lifting plate is provided on the top of the base, a push rod mechanism and a pair of inclined ejectors are respectively installed on the top of the lifting plates, the pair of inclined ejectors are both slidably connected to the lower mold, and the pair of inclined ejectors are both provided with undercut grooves, and a cylinder for driving the lifting plate to move vertically is also installed on one side of the lower mold;

[0008] The ejector mechanism comprises an ejector body slidably connected to the lower die, an outer side wall of the ejector body is provided with a pair of receiving grooves, and a support rod is rotatably connected in the receiving groove.

[0009] Furthermore, a limiting groove is provided on the inner side wall of the storage groove, a movable block is slidably connected in the limiting groove, one side of the movable block is rotatably connected to a connecting rod, and the end of the connecting rod away from the movable block is rotatably connected to the support rod.

[0010] Furthermore, a receiving groove is provided on one side of the support rod, and the connecting rod is rotatably connected to the inner wall of the receiving groove.

[0011] Furthermore, a spring is installed on the inner wall of the limiting groove, and one end of the spring away from the inner wall of the limiting groove is connected to the movable block.

[0012] Furthermore, a pair of sliding rods are installed on the top of the lifting plate, and the bottom ends of the pair of inclined lift rods are rotatably connected to the sliders, and the sliding rods pass through the sliders and are slidably connected to the sliders.

[0013] Furthermore, a pair of guide rods are installed on the top of the base, and the guide rods pass through the lifting plate and are slidably connected to the lifting plate.

[0014] The beneficial effect of the present application is that the present application provides a mold oblique ejection mechanism. During the oblique ejection process, when the ejector rod body rises synchronously with the lifting plate, the support rod can rotate after losing the obstruction and abut against the inclined ejectors on both sides, thereby providing support for the inclined ejectors on both sides, reducing the probability of the inclined ejectors breaking or deforming under the action of gravity for a long time, improving the service life of the inclined ejectors, and reducing the maintenance cost of the mold.

[0015] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0017] In the attached figure:

[0018] Figure 1 Schematic diagram of the overall structure;

[0019] Figure 2 is a first cross-sectional structural schematic diagram;

[0020] Figure 3 is a second cross-sectional structural schematic diagram;

[0021] Figure 4for Figure 3 Enlarged structural diagram at point A in the middle.

[0022] Among them, the reference numerals in the figures are:

[0023] 1. Base; 2. Support plate; 3. Lower mold; 4. Upper mold; 5. Lifting plate; 6. Cylinder; 7. Ejector mechanism; 71. Ejector body; 72. Storage slot; 73. Support rod; 74. Connecting rod; 75. Movable block; 76. Spring; 8. Ejector rod; 9. Lower core; 10. Upper core; 11. Slider; 12. Slide rod; 13. Guide rod; 14. Undercut groove. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0026] like Figure 1-4 As shown, the present application provides a mold oblique ejection mechanism, including a base 1 and an upper mold 4, a pair of support plates 2 are installed on the top of the base 1, the support plates 2 are fixed to the top of the base 1 by means of bolts, a lower mold 3 is installed on the top of the pair of support plates 2, the lower mold 3 is fixed to the top of the support plates 2 by means of bolts, the upper mold 4 is located above the lower mold 3, a lower core 9 is installed inside the lower mold 3, the lower core 9 is fixed to the lower mold 3 by means of bolts, an upper core 10 is installed inside the upper mold 4, and the upper core 10 is also installed It is fixed to the upper mold 4 by means of bolts. The lower core 9 and the upper core 10 are combined to form a molding cavity. A lifting plate 5 is provided on the top of the base 1. A push rod mechanism 7 and a pair of inclined push rods 8 are respectively installed on the top of the lifting plate 5. The pair of inclined push rods 8 are both slidably connected to the lower mold 3, and the pair of inclined push rods 8 are both provided with an undercut groove 14. A cylinder 6 for driving the vertical movement of the lifting plate 5 is also installed on one side of the lower mold 3. The cylinder 6 is fixed to one side of the lower mold 3 by means of bolts, and the output end of the cylinder 6 is key-connected to the lifting plate 5.

[0027] The ejector mechanism 7 includes an ejector body 71 slidably connected to the lower mold 3 . A pair of receiving grooves 72 are formed on the outer side wall of the ejector body 71 . The receiving grooves 72 are used to accommodate the ejector body 71 . A support rod 73 is rotatably connected in the receiving grooves 72 .

[0028] In this embodiment, this solution is to assist in the smooth demoulding of the product. After the injection mold is used to mold the plastic part, if the plastic part has inclined ribs, flanges or curved parts, the product can be ejected smoothly by using an inclined ejection mechanism.

[0029] Specifically, after the product is formed, the upper mold 4 is moved upward to complete the mold opening operation, and then the cylinder 6 is used to drive the lifting plate 5 to move vertically upward, synchronously driving the ejector mechanism 7 and a pair of inclined ejector rods 8 to rise, and the inclined ejector rods 8 are provided to move obliquely. As the inclined ejector rods 8 continue to move, the product's hooks can gradually separate from the undercut grooves 14 on the inclined ejector rods 8, thereby allowing the product to be smoothly demolded;

[0030] Among them, when the ejector body 71 rises synchronously with the lifting plate 5 and the receiving groove 72 moves to the top of the lower core 9, the support rod 73 can rotate and abut against the inclined ejectors 8 on both sides, thereby providing support for the inclined ejectors 8 on both sides, reducing the probability of the inclined ejectors 8 breaking or deforming under the action of gravity for a long time, improving the service life of the inclined ejectors 8, and reducing the maintenance cost of the mold.

[0031] In addition, when the lifting plate 5 moves vertically downward, it simultaneously drives the push rod body 71 to move, and the support rods 73 on both sides are blocked by the lower core 9 and move into the receiving groove 72 again.

[0032] like Figure 4 As shown, a limiting groove is provided on the inner wall of the storage groove 72, and a movable block 75 is slidably connected in the limiting groove. A connecting rod 74 is rotatably connected to one side of the movable block 75. The end of the connecting rod 74 away from the movable block 75 is rotatably connected to the support rod 73. A receiving groove is provided on one side of the support rod 73. The receiving groove on one side of the support rod 73 is used to provide space for the connecting rod 74. The connecting rod 74 is rotatably connected to the inner wall of the accommodating groove. A spring 76 is installed on the inner wall of the limiting groove, and the end of the spring 76 away from the inner wall of the limiting groove is connected to the movable block 75.

[0033] When the cam 73 is in the closed position, the locking cam 73 is in the closed position, and the locking cam 73 is in the closed position, so that the cam 73 is in the closed position and the locking cam 73 is in the closed position.

[0034] It should be noted that the end of the support rod 73 is spherical, and when the support rod 73 is opened to the maximum, the inclined push rod 8 and the support rod 73 are arranged at 90 degrees.

[0035] like Figure 2-3 As shown, a pair of slide rods 12 are installed on the top of the lifting plate 5, and the bottom ends of the pair of inclined lift rods 8 are rotatably connected to the slider 11. The slide rods 12 pass through the slider 11 and are slidably connected to the slider 11.

[0036] In this embodiment, when the lifting plate 5 moves vertically, the slider 11 at the bottom end of the tilting rod 8 can slide on the slide rod 12, thereby ensuring that the pair of tilting rods 8 can move obliquely.

[0037] like Figure 2-3 As shown, a pair of guide rods 13 are installed on the top of the base 1. The guide rods 13 pass through the lifting plate 5 and are slidably connected to the lifting plate 5.

[0038] In this embodiment, a pair of guide rods 13 are provided to limit the movement trajectory of the lifting plate 5 , thereby improving the stability of the vertical movement of the lifting plate 5 .

[0039] Working principle:

[0040] After the product is formed, the upper mold 4 is moved upward to complete the mold opening operation, and then the cylinder 6 is used to drive the lifting plate 5 to move vertically upward, synchronously driving the ejector mechanism 7 and a pair of inclined ejector rods 8 to rise, and the inclined ejector rods 8 are provided to move obliquely. With the continuous movement of the inclined ejector rods 8, the hook of the product can be gradually separated from the undercut groove 14 on the inclined ejector rods 8, so that the product can be demoulded smoothly. When the ejector body 71 rises synchronously with the lifting plate 5, and the receiving groove 72 moves to the top of the lower core 9, the spring 76 provided uses its own The elastic force can control the movable block 75 to slide in the limiting groove. Under the transmission action of the connecting rod 74, it can drive the support rod 73 to rotate, so that the support rod 73 abuts against the inclined ejector rod 8 to provide support for the inclined ejector rod 8. When the lifting plate 5 moves vertically downward, it synchronously drives the ejector rod body 71 to move. The support rods 73 on both sides are blocked by the lower core 9 and rotate relative to each other. Under the action of the connecting rod 74, the movable block 75 is driven to slide in the limiting groove and compress the spring 76 until the support rod 73 rotates to the receiving groove 72.

[0041] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A mold oblique ejection mechanism, comprising a base (1) and an upper mold (4), characterized in that: A pair of support plates (2) are installed on the top of the base (1), a lower mold (3) is installed on the top of the pair of support plates (2), the upper mold (4) is located above the lower mold (3), a lower core (9) is installed inside the lower mold (3), an upper core (10) is installed inside the upper mold (4), the lower core (9) and the upper core (10) are combined to form a molding cavity, a lifting plate (5) is provided on the top of the base (1), a push rod mechanism (7) and a pair of inclined push rods (8) are respectively installed on the top of the lifting plate (5), the pair of inclined push rods (8) are both slidably connected to the lower mold (3), and the pair of inclined push rods (8) are both provided with an undercut groove (14), and a cylinder (6) for driving the lifting plate (5) to move vertically is also installed on one side of the lower mold (3); The ejector mechanism (7) comprises an ejector body (71) slidably connected to the lower mold (3); a pair of receiving grooves (72) are provided on the outer side wall of the ejector body (71); and a support rod (73) is rotatably connected in the receiving groove (72).

2. A mold oblique ejection mechanism according to claim 1, characterized in that: A limiting groove is provided on the inner side wall of the receiving groove (72), a movable block (75) is slidably connected in the limiting groove, one side of the movable block (75) is rotatably connected to a connecting rod (74), and one end of the connecting rod (74) away from the movable block (75) is rotatably connected to the support rod (73).

3. The mold oblique ejection mechanism according to claim 2, characterized in that: A receiving groove is provided on one side of the support rod (73), and the connecting rod (74) is rotatably connected to the inner wall of the receiving groove.

4. The mold oblique ejection mechanism according to claim 2, characterized in that: A spring (76) is installed on the inner wall of the limiting groove, and one end of the spring (76) away from the inner wall of the limiting groove is connected to the movable block (75).

5. The mold oblique ejection mechanism according to claim 1, characterized in that: A pair of slide bars (12) are installed on the top of the lifting plate (5), and the bottom ends of the pair of inclined lift rods (8) are both rotatably connected to the sliders (11), and the slide bars (12) pass through the sliders (11) and are slidably connected to the sliders (11).

6. The mold oblique ejection mechanism according to claim 1, characterized in that: A pair of guide rods (13) are installed on the top of the base (1), and the guide rods (13) pass through the lifting plate (5) and are slidably connected to the lifting plate (5).

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