Ejection mechanism and plastic injection molding machine thereof

Abstract

The utility model discloses an ejection mechanism and a plastic injection molding machine thereof, and relates to the technical field of product molding ejection, the ejection mechanism comprises an ejection piece, a supporting piece, a moving piece, a first connecting mechanism and a second connecting mechanism, the supporting piece is connected with the ejection piece, and the supporting piece is used for guiding the ejection piece to move obliquely; the first connecting mechanism is arranged between the supporting piece and the moving piece, and the second connecting mechanism is connected with the moving piece. According to the utility model, through the arrangement of the supporting piece, the moving piece and the first connecting mechanism, the ejection piece can move upwards along the inclined direction, so that when the ejection piece ejects a product out of the cavity, the ejection piece cannot be adhered to the top end of the product, a worker can easily take down the ejected product, the discharging convenience of the injection molding machine is improved, and the production efficiency is improved. Meanwhile, the second connecting mechanism is connected with the upper mold, so that when the injection molding machine opens the mold, the ejection piece can automatically move upwards along with the rising of the upper mold, the equipment driving is reduced, and the equipment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of product forming and ejection, in particular to an ejection mechanism and a plastic injection molding machine thereof. Background Art

[0002] During the injection molding process, after the product is cooled and solidified in the mold cavity, it is usually necessary to use an ejection mechanism to demold the product from the cavity.

[0003] Traditional ejection mechanisms generally adopt a linear ejection method perpendicular to the parting surface. The ejector moves along the vertical direction to push the product out of the lower mold cavity. However, this ejection method has certain limitations in practical applications. When the surface of the product has high adhesiveness, the ejector is likely to adhere to the surface of the product after completing the ejection action, resulting in difficulty for the product to smoothly separate from the ejector, and even may cause product deformation or ejector damage, increasing the difficulty of manual part taking and reducing production efficiency. For this reason, we propose an ejection mechanism and a plastic injection molding machine thereof. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an ejection mechanism and a plastic injection molding machine thereof to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: An ejection mechanism, comprising:

[0006] An ejector;

[0007] A support member, the support member is connected to the ejector, and the support member is used to guide the ejector to move obliquely;

[0008] A moving member, the moving member is used to drive the support member to move;

[0009] A first connection mechanism, the first connection mechanism is arranged between the support member and the moving member;

[0010] A second connection mechanism, the second connection mechanism is connected to the moving member, and the second connection mechanism is used to drive the moving member to move.

[0011] Preferably, the ejector includes a top block, the support member includes a support rod, the support rod is obliquely arranged, and the top end of the support rod is fixedly connected to the bottom end of the top block.

[0012] Preferably, the moving member includes a lifting rod, and the first connection mechanism is arranged between the lifting rod and the support rod.

[0013] Preferably, the first connection mechanism includes:

[0014] A straight groove, the straight groove is opened on the front surface of the lifting rod;

[0015] A runner, a rotating groove is provided at the bottom end of the support rod, the runner is rotatably connected to the inner wall of the rotating groove, and the runner is slidably arranged on the inner wall of the straight groove.

[0016] Preferably, the second connection mechanism includes:

[0017] A connecting rod, the bottom end of the connecting rod is fixedly connected to the top end of the lifting rod;

[0018] A connecting sleeve, the connecting rod is movably inserted into the inner wall of the connecting sleeve, an activity ring is fixedly sleeved on the outer wall of the connecting rod, and the outer wall of the activity ring is slidably connected to the inner wall of the connecting sleeve;

[0019] A fixing ring, the fixing ring is fixedly connected to the bottom end of the connecting sleeve, and the outer wall of the connecting rod is slidably connected to the inner wall of the fixing ring.

[0020] The present utility model also provides a plastic injection molding machine, including:

[0021] The ejecting mechanism described above;

[0022] An upper mold, the top end of the connecting sleeve is fixedly connected to the bottom end of the upper mold;

[0023] A lower mold, a cavity is provided at the top end of the lower mold.

[0024] Preferably, a slotted groove is provided on the inner wall of the cavity, the ejecting block is movably inserted into the inner wall of the slotted groove, an activity cavity is provided inside the ejecting block, the lifting rod is slidably connected to the inner wall of the activity cavity, a first activity hole is provided between the activity cavity and the slotted groove, the support rod is movably inserted into the inner wall of the first activity hole, a third activity hole is provided at the top end of the lower mold, the connecting sleeve is movably inserted into the inner wall of the third activity hole, a second activity hole is provided between the third activity hole and the activity cavity, and the connecting rod is movably inserted into the inner wall of the second activity hole.

[0025] Preferably, a spiral groove is provided inside the lower mold, and two connecting pipes are fixedly connected to the front surface of the lower mold, and the two connecting pipes are respectively communicated with the inlet and the outlet of the spiral groove.

[0026] The technical effects and advantages of the present utility model:

[0027] With the provision of the support member, the moving member and the first connecting mechanism in the present utility model, the ejecting member can move upward along the inclined direction. As a result, when the ejecting member ejects the product from the cavity, the ejecting member will no longer adhere to the top of the product, and the staff can easily remove the ejected product, improving the convenience of the discharge of the injection molding machine. At the same time, by connecting with the upper mold through the second connecting mechanism, when the injection molding machine opens the mold, the ejecting member can automatically move upward as the upper mold rises, reducing the equipment drive and lowering the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic front sectional structure view of the present utility model.

[0029] Figure 2 It is a schematic three-dimensional structure view of the support rod of the present utility model.

[0030] Figure 3 It is a schematic three-dimensional structure view of the present utility model.

[0031] Figure 4 For the present utility model Figure 1 Schematic enlarged partial structure view of the A place.

[0032] In the figure: 101, top block; 201, support rod; 301, lifting rod; 401, straight groove; 402, rotating groove; 403, rotating wheel; 501, connecting rod; 502, connecting sleeve; 503, movable ring; 504, fixed ring; 601, upper mold; 602, lower mold; 603, cavity; 701, slotted hole; 702, first movable hole; 703, movable cavity; 704, second movable hole; 705, third movable hole; 801, spiral groove; 802, connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0034] The present utility model provides as Figures 1-4An ejection mechanism shown includes an ejection member, a support member, a moving member, a first connection mechanism and a second connection mechanism. The support member is connected to the ejection member. The support member is used to guide the ejection member to move obliquely. The moving member is used to drive the support member to move. The first connection mechanism is arranged between the support member and the moving member. The second connection mechanism is connected to the moving member. The second connection mechanism is used to drive the moving member to move. Through the settings of the support member, the moving member and the first connection mechanism, the ejection member can move upward along the inclined direction. As a result, when the ejection member ejects the product from the cavity 603, the ejection member will no longer adhere to the top of the product, and the staff can easily remove the ejected product, improving the convenience of the injection molding machine discharging. At the same time, by connecting the second connection mechanism to the upper mold 601, when the injection molding machine opens the mold, the ejection member can automatically move upward as the upper mold 601 rises, reducing equipment drive and lowering equipment costs.

[0035] Among them, the ejection member includes a top block 101, and the support member includes a support rod 201. The support rod 201 is arranged obliquely. The top end of the support rod 201 is fixedly connected to the bottom end of the top block 101. By obliquely moving through the first moving hole 702, the slotted groove 701 can be driven to move obliquely. As a result, when the product is demolded, the action of the top block 101 at the bottom end of the product is to jack up the product upward relative to the sliding of the product, that is, at the moment when the top block 101 moves upward, the top block 101 separates from the bottom end of the product.

[0036] Among them, the moving member includes a lifting rod 301. The first connection mechanism is arranged between the lifting rod 301 and the support rod 201. By lifting and lowering the lifting rod 301, the support rod 201 can be driven to lift and lower.

[0037] Among them, the first connection mechanism includes a straight groove 401 and a runner 403. The straight groove 401 is opened on the front surface of the lifting rod 301. A rotating groove 402 is opened at the bottom end of the support rod 201. The runner 403 is rotatably connected to the inner wall of the rotating groove 402. The runner 403 is slidably arranged on the inner wall of the straight groove 401. Through the limiting and guiding of the straight groove 401 to the runner 403, when the lifting rod 301 is lifted and lowered to drive the support rod 201 to lift and lower, the runner 403 will slide in the straight groove 401, enabling the lifting rod 301 to stably drive the support rod 201 to lift and lower, thus ensuring the convenience and stability of the movement of the support member.

[0038] Among them, the second connecting mechanism includes a connecting rod 501, a connecting sleeve 502 and a fixing ring 504. The bottom end of the connecting rod 501 is fixedly connected to the top end of the lifting rod 301. The connecting rod 501 is movably inserted into the inner wall of the connecting rod 501. An active ring 503 is fixedly sleeved on the outer wall of the connecting rod 501. The outer wall of the active ring 503 is slidably connected to the inner wall of the connecting sleeve 502. The fixing ring 504 is fixedly connected to the bottom end of the connecting sleeve 502. The outer wall of the connecting rod 501 is slidably connected to the inner wall of the fixing ring 504. After the product is cooled and formed, the mold is opened. The upper mold 601 will drive the connecting sleeve 502 to move upward. The upward movement of the connecting sleeve 502 drives the fixing ring 504 to move upward until the fixing ring 504 abuts against the bottom end of the active ring 503. At this time, the upward movement of the fixing ring 504 drives the active ring 503 to move upward. The upward movement of the active ring 503 can drive the connecting rod 501 to move upward. The upward movement of the connecting rod 501 drives the lifting rod 301 to move upward, so that the ejector block 101 moves upward inside the cavity 603 to eject the product, and the ejecting mechanism can automatically work when the upper mold 601 and the lower mold 602 are opened, thereby improving the convenience of the ejecting mechanism.

[0039] The present utility model also provides a plastic injection molding machine, which includes the above-mentioned ejecting mechanism, an upper mold 601 and a lower mold 602. The top end of the connecting sleeve 502 is fixedly connected to the bottom end of the upper mold 601. A cavity 603 is opened at the top end of the lower mold 602. An injection hole is opened at the top end of the upper mold 601. The molten plastic enters the cavity 603 through the injection hole. The product can be obtained after the molten plastic is cooled and formed in the cavity 603.

[0040] Among them, a slot 701 is opened on the inner wall of the cavity 603. The ejector block 101 is movably inserted into the inner wall of the slot 701. An active cavity 703 is opened inside the ejector block 101. The lifting rod 301 is slidably connected to the inner wall of the active cavity 703. A first active hole 702 is opened between the active cavity 703 and the slot 701. The support rod 201 is movably inserted into the inner wall of the first active hole 702. A third active hole 705 is opened at the top end of the lower mold 602. The connecting sleeve 502 is movably inserted into the inner wall of the third active hole 705. A second active hole 704 is opened between the third active hole 705 and the active cavity 703. The connecting rod 501 is movably inserted into the inner wall of the second active hole 704. Through the setting of the first active hole 702, when the support rod 201 rises, it can stably drive the ejector block 101 to move obliquely.

[0041] Among them, a spiral groove 801 is formed inside the lower die 602. Two connecting pipes 802 are fixedly connected to the front surface of the lower die 602. The two connecting pipes 802 are respectively communicated with the inlet and outlet of the spiral groove 801. The coolant enters the spiral groove 801 through one of the connecting pipes 802, and then accelerates the cooling of the product in the cavity 603. Finally, it is discharged from the other connecting pipe 802 to realize circulation, thereby reducing the molding time of the product and improving the processing efficiency.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ejection mechanism, characterized in that, Comprising: Ejecting member; Support member, the support member is connected to the ejecting member, and the support member is used to guide the ejecting member to move obliquely; Moving member, the moving member is used to drive the support member to move; First connecting mechanism, the first connecting mechanism is arranged between the support member and the moving member; Second connecting mechanism, the second connecting mechanism is connected to the moving member, and the second connecting mechanism is used to drive the moving member to move.

2. The ejection mechanism according to claim 1, characterized in that, The ejecting member includes an ejecting block (101), the support member includes a support rod (201), the support rod (201) is arranged obliquely, and the top end of the support rod (201) is fixedly connected to the bottom end of the ejecting block (101).

3. The ejecting mechanism according to claim 2, wherein The moving member includes a lifting rod (301), and the first connecting mechanism is arranged between the lifting rod (301) and the support rod (201).

4. The ejection mechanism according to claim 3, characterized in that, The first connecting mechanism includes: Straight groove (401), the straight groove (401) is opened on the front surface of the lifting rod (301); Rotating wheel (403), a rotating groove (402) is opened at the bottom end of the support rod (201), the rotating wheel (403) is rotatably connected to the inner wall of the rotating groove (402), and the rotating wheel (403) is slidably arranged on the inner wall of the straight groove (401).

5. The ejector mechanism according to claim 3, characterized in that, The second connecting mechanism includes: Connecting rod (501), the bottom end of the connecting rod (501) is fixedly connected to the top end of the lifting rod (301); Connecting sleeve (502), the connecting rod (501) is movably inserted into the inner wall of the connecting sleeve (502), a movable ring (503) is fixedly sleeved on the outer wall of the connecting rod (501), and the outer wall of the movable ring (503) is slidably connected to the inner wall of the connecting sleeve (502); Fixed ring (504), the fixed ring (504) is fixedly connected to the bottom end of the connecting sleeve (502), and the outer wall of the connecting rod (501) is slidably connected to the inner wall of the fixed ring (504).

6. A plastic injection molding machine, characterized in that, Comprising: The ejecting mechanism according to claim 5 above; Upper die (601), the top end of the connecting sleeve (502) is fixedly connected to the bottom end of the upper die (601); Lower die (602), a cavity (603) is opened at the top end of the lower die (602).

7. A plastic injection molding machine according to claim 6, characterized in that, A slotted groove (701) is opened on the inner wall of the cavity (603), the ejecting block (101) is movably inserted into the inner wall of the slotted groove (701), a movable cavity (703) is opened inside the ejecting block (101), the lifting rod (301) is slidably connected to the inner wall of the movable cavity (703), a first movable hole (702) is opened between the movable cavity (703) and the slotted groove (701), the support rod (201) is movably inserted into the inner wall of the first movable hole (702), a third movable hole (705) is opened at the top end of the lower die (602), the connecting sleeve (502) is movably inserted into the inner wall of the third movable hole (705), a second movable hole (704) is opened between the third movable hole (705) and the movable cavity (703), and the connecting rod (501) is movably inserted into the inner wall of the second movable hole (704).

8. A plastic injection molding machine according to claim 6, characterized in that, A spiral groove (801) is formed inside the lower die (602), and two connecting pipes (802) are fixedly connected to the front surface of the lower die (602). The two connecting pipes (802) are respectively communicated with the inlet and outlet of the spiral groove (801).

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