Injection molding part ejection structure

Abstract

The utility model provides an injection-molded part ejection structure, and relates to the technical field of injection molds, a first supporting plate comprises a supporting assembly, a pushing assembly is arranged at the top of the supporting assembly, the pushing assembly comprises a mounting block, a first connecting rod is arranged on the side face of the mounting block, and a pulley is arranged at one end of the first connecting rod; a sliding wheel is arranged on the mold insert, a touch block is arranged on the side face of the sliding wheel, a second supporting plate is arranged at the bottom of the touch block, a fixing block is fixedly connected to the bottom of the second supporting plate, and the first connecting rod is arranged to be matched with the sliding wheel, so that pushing force can be formed on the touch block through the first connecting rod when the mold insert moves upwards; according to the injection molding device, a first connecting rod is arranged, so that a straight ejection assembly can be ejected out when the first connecting rod moves forwards, and then the effect of ejecting an injection molding part at a time can be achieved; a second supporting plate is arranged, so that a touch block can be supported, and a fixed block, a second connecting rod, a gear and a third connecting rod are matched, so that thrust of the first connecting rod can be assisted.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection molded part ejection structure. Background Art

[0002] An injection molded part ejection structure usually refers to a device used to push the molded product out of the mold during the plastic injection molding process. It is responsible for ejecting the molded plastic product from the mold smoothly to ensure product integrity and production efficiency.

[0003] The existing patent CN215283194U discloses an injection mold ejection structure, which relates to the field of injection mold technology, including: a box, a controller, an electric push rod, a movable mold, an arc mouth, a mold seat, a mold cavity, a port, a cavity, a sponge pad, an ejector rod, a spring, and a top plate; the left side of the box is fixedly connected with a controller; the top of the box is fixedly connected with an electric push rod; the bottom of the electric push rod is fixedly connected with the movable mold; the beneficial effect is that when the injection molded product is finalized, the electric push rod drives the movable mold to move upward, so that the movable mold is separated from the mold seat, and the arc mouth is separated from the top of the ejector rod, and the spring returns to its original state, and the elastic force of the spring brings an upward elastic force to the ejector rod, and the ejector rod simultaneously brings an upward elastic force to the ejector plate, so that the ejector plate pops up inside the port, so that the ejector plate contacts the finalized injection molded product, thereby ejecting the finalized injection molded product, so that the finalized injection molded product can be quickly separated from the mold cavity, and the work efficiency is further improved.

[0004] The above technical solution sets an elastic structure. When the injection molded product is finalized, the push rod and the elastic structure cooperate to achieve a solution for quickly ejecting the injection molded product, thereby solving the problem that during the ejection action of most injection molds, the product cannot be completely separated from the mold due to the large clamping force of the upper mold and the lower mold. However, the above solution still has the problem that when the elastic structure is used to eject the injection molded part, the spring may suffer from elastic fatigue after long-term repeated use, which will affect its performance and reliability. As time goes by, the strength of the spring may weaken, resulting in unstable or insufficient ejection force, and the mold cannot be ejected well. Therefore, the utility model proposes an injection molded part ejection structure. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and provide an injection molded part ejection structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an injection molded part ejection structure, comprising a first support plate, the first support plate comprising a support assembly, and a push assembly is arranged on the top of the support assembly;

[0007] The pushing assembly includes a mounting block, a first connecting rod is provided on the side of the mounting block, a pulley is provided at one end of the first connecting rod, a touch block is provided on the side of the pulley, a second support plate is provided at the bottom of the touch block, a fixing block is fixedly connected to the bottom of the second support plate, a side of the fixing block is rotatably connected to the second connecting rod through a bearing, an end of the second connecting rod away from the fixing block is rotatably connected to a gear through a bearing, a side of the gear is rotatably connected to a third connecting rod through a bearing, and an end of the third connecting rod away from the gear is rotatably connected to the side of the second support plate through a bearing.

[0008] As a preferred embodiment, the support assembly includes a base plate, a support rod is arranged on the top of the base plate, a mold cavity is arranged on the top of the support rod, and the inner cavity of the mold cavity is provided with a first slide groove and a mounting groove.

[0009] The technical effect of adopting the above further scheme is: push rods are respectively provided at the bottom of the support plate and the bottom of the base plate, and by providing the base plate, the inclined ejector assembly and the pushing assembly can be supported, and by providing the support rod, the insert can be supported, and by opening a mold cavity and a first slide groove in the inner cavity of the mold cavity, the inclined ejector assembly and the pushing assembly can be cooperated to eject the injection molded parts.

[0010] As a preferred embodiment, a slanted top assembly is provided on the top of the base plate, and the slanted top assembly includes a support block, an inner cavity of the support block is provided with a slanted tip, an insert is provided at one end of the slanted tip away from the support block, and a first sliding block is provided on the side of the insert.

[0011] The technical effect of adopting the above further scheme is: by setting a support block, the inclined tip can be supported, by setting a inclined tip, the injection molded part can be inclinedly ejected, and by setting the first slider and the first slide groove to cooperate, the insert can initially eject the injection molded part.

[0012] As a preferred embodiment, a third slide groove is provided in the inner cavity of the support block, a second slider is provided at one end of the inclined tip, both sides of the second slider extend to the inner cavity of the third slide groove and are slidably connected to the inner cavity of the third slide groove, a second slide groove is provided in the inner cavity of the insert, and one end of the inclined tip away from the support block extends to the inner cavity of the second slide groove and is slidably connected to the inner cavity of the second slide groove.

[0013] The technical effect of adopting the above further solution is: by cooperating with the third slide groove and the second slider, the movement trajectory of the support rod can be limited, and by opening the second slide groove in the inner cavity of the insert, the ejection direction of the inclined pin can be limited.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] By arranging the first connecting rod and the pulley in cooperation, the first connecting rod can form a thrust on the touch block when the insert moves upward. By arranging the touch block, the straight ejection assembly can be ejected when the first connecting rod moves forward, thereby achieving the effect of ejecting the injection molded part at one time. By arranging the second support plate, the touch block can be supported. By cooperating with the fixed block, the second connecting rod, the gear and the third connecting rod, the thrust of the first connecting rod can be assisted, thereby making the push smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of an injection molding ejection structure provided by the utility model;

[0017] Figure 2 A schematic diagram of a cross-sectional three-dimensional structure of a support component of an injection molding ejection structure provided by the utility model;

[0018] Figure 3 A schematic diagram of a sectional three-dimensional structure of an inclined ejector assembly of an injection molding ejector structure provided by the utility model;

[0019] Figure 4 A schematic diagram of a cross-sectional three-dimensional structure of a straight ejector assembly of an injection molded part ejection structure provided by the utility model;

[0020] Figure 5 The utility model provides a schematic cross-sectional three-dimensional structure diagram of a pushing component of an injection molding ejection structure.

[0021] Legend:

[0022] 1. A first support plate;

[0023] 2. Support assembly; 21. Bottom plate; 22. Support rod; 23. Mold cavity; 24. First slide groove; 25. Mounting groove;

[0024] 3. inclined top assembly; 31. support block; 32. inclined tip; 33. insert; 34. first slider; 35. second slider; 36. second slide; 37. third slide;

[0025] 4. Pushing assembly; 41. Mounting block; 42. First connecting rod; 43. Pulley; 44. Touch block; 45. Second supporting plate; 46. Fixing block; 47. Second connecting rod; 48. Gear; 49. Third connecting rod; 410. Fourth slide; 411. Third slider; 412. Fifth slide;

[0026] 5. straight ejector assembly; 51. ejector pin; 52. fourth slider; 53. spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1 , Figure 4 and Figure 5 As shown, this embodiment provides a technical solution: an injection molded part ejection structure, comprising a first support plate 1, wherein the first support plate 1 comprises a support assembly 2, and a push assembly 4 is arranged on the top of the support assembly 2;

[0029] The pushing assembly 4 includes a mounting block 41, a first connecting rod 42 is arranged on the side of the mounting block 41, a pulley 43 is arranged at one end of the first connecting rod 42, a touch block 44 is arranged on the side of the pulley 43, a second supporting plate 45 is arranged at the bottom of the touch block 44, a fixing block 46 is fixedly connected to the bottom of the second supporting plate 45, a second connecting rod 47 is rotatably connected to the side of the fixing block 46 through a bearing, and the end of the second connecting rod 47 away from the fixing block 46 is rotatably connected to a gear through a bearing 48, the side of the gear 48 is rotatably connected to a third connecting rod 49 through a bearing, and one end of the third connecting rod 49 away from the gear 48 is rotatably connected to the side of the second support plate 45 through a bearing, the inner cavity of the mounting block 41 is provided with a fourth slide groove 410, the bottom of the touch block 44 is provided with a fifth slide groove 412, and the top of the second support plate 45 is provided with a third slider 411, one end of the third slider 411 extends to the inner cavity of the fifth slide groove 412, and is slidably connected to the inner cavity of the fifth slide groove 412, After the molding is completed, the push rod at the bottom of the bottom plate 21 is started to move the insert 33 upward. This action generates a thrust on the touch block 44 through the interaction between the first connecting rod 42, the pulley 43 and the fourth slide groove 410. The first connecting rod 42 and the touch block 44 are connected by a fixed rod. By pushing the touch block 44, the straight ejector assembly 5 can be ejected when the first connecting rod 42 moves forward, thereby achieving the effect of ejecting the injection molded part at one time. The straight ejector assembly 5 cooperates with the inclined ejector assembly 3 to be able to The injection molded part is completely ejected to avoid incomplete ejection. The second support plate 45 is provided to support the touch block 44. The fixing block 46, the second connecting rod 47, the gear 48 and the third connecting rod 49 cooperate to assist the thrust of the first connecting rod 42, thereby making the pushing smoother, thereby avoiding damage to the surface of the injection molded part caused by the high speed of the straight ejection component 5 during the ejection process. The third slider 411 and the fifth slide groove 412 cooperate to limit its movement trajectory.

[0030] Furthermore, if Figure 2 and Figure 3As shown: the support assembly 2 includes a bottom plate 21, a support rod 22 is provided on the top of the bottom plate 21, a mold cavity 23 is provided on the top of the support rod 22, and the inner cavity of the mold cavity 23 is provided with a first slide groove 24 and a mounting groove 25, the support assembly 2 includes a bottom plate 21, a support rod 22 is provided on the top of the bottom plate 21, a mold cavity 23 is provided on the top of the support rod 22, and the inner cavity of the mold cavity 23 is provided with a first slide groove 24 and a mounting groove 25, and a slanted top assembly is provided on the top of the bottom plate 21 3, the inclined top assembly 3 includes a support block 31, the inner cavity of the support block 31 is provided with an inclined tip 32, the end of the inclined tip 32 away from the support block 31 is provided with an insert 33, the side of the insert 33 is provided with a first slider 34, the inner cavity of the support block 31 is provided with a third slide groove 37, one end of the inclined tip 32 is provided with a second slider 35, both sides of the second slider 35 extend to the inner cavity of the third slide groove 37, and are slidably connected with the inner cavity of the third slide groove 37, the inner cavity of the insert 33 is provided with a second slide groove 36, the inclined The tip 32 extends to the inner cavity of the second slide groove 36 away from the end of the support block 31, and is slidably connected to the inner cavity of the second slide groove 36. A push rod is provided at the bottom of the bottom plate 21. By providing the bottom plate 21, the inclined ejector assembly 3 and the pushing assembly 4 can be supported. By providing the support rod 22, the insert 33 can be supported. By providing the mold cavity 23 and the first slide groove 24 in the inner cavity of the mold cavity 23, the inclined ejector assembly 3 and the pushing assembly 4 can be cooperated to eject the injection molded part. The insert 33 cooperates with the straight ejection assembly 5 to perform preliminary ejection of the injection molded part. By setting the support block 31, the inclined tip 32 can be supported. By setting the inclined tip 32, the injection molded part can be ejected obliquely, thereby achieving the effect of secondary ejection of the injection molded part, avoiding incomplete ejection of the injection molded part. The third slide groove 37 and the second slider 35 cooperate to limit the movement trajectory of the support rod 22. By providing a second slide groove 36 in the inner cavity of the insert 33, the ejection direction of the inclined tip 32 can be limited.

[0031] After the injection molded part is pushed up, the push assembly will not be pushed back in time because there is no thrust acting directly on the top of the part. Figure 4As shown: the inner cavity of the first slide 24 is provided with a straight ejection assembly 5, and the straight ejection assembly 5 includes an ejector pin 51, and fourth sliders 52 are provided on both sides of the ejector pin 51, and a spring 53 is provided on the top of the fourth slider 52. After the injection molding process is completed, the ejection action of the injection molded part is realized by activating the push rod located at the bottom of the bottom plate 21. In this process, the fourth sliders 52 located on both sides of the ejector pin 51 are in direct contact with the spring 53, and exert pressure on the spring 53, causing it to be squeezed and deformed, thereby storing elastic potential energy. When the ejection action is completed and the push rod retracts, the stress stored in the spring 53 is released, and the force generated by its recovery deformation assists the ejector pin 51 to return to its original position, preparing for the next injection molding cycle.

[0032] Working principle:

[0033] like Figure 1-5 As shown:

[0034] When in use: after the injection molding is completed and the molded part is cooled, the push rod at the bottom of the bottom plate 21 is started, and the push rod pushes the bottom plate 21 to move upward. When the bottom plate 21 moves upward, the insert 33 is driven to move upward through the support rod 22. When the insert 33 moves upward, this action generates a thrust to the touch block 44 through the interaction of the first connecting rod 42, the pulley 43 and the fourth slide groove 410. The touch block 44 moves forward, so that it can touch the ejector pin 51. The ejector pin 51 moves along the surface of the touch block 44. The set slope moves upward, and at this time, the insert 33 stops moving through the cooperation of the first slider 34 and the first slide groove 24. The top of the insert 33 and the ejector pin 51 contact the injection molded part for the first time, and initially separates it from the mold. After the insert 33 stops moving, the push rod at the bottom of the support plate 1 continues to generate stress upward, and the second slider 35 and the third slide groove 37 cooperate to enable the inclined pin 32 to move upward along the inner cavity of the second slide groove 36, so that the injection molded part can be ejected for a second time, thereby achieving the effect of completely ejecting the injection molded part.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An injection molded part ejection structure, comprising a first support plate (1), characterized in that: A support assembly (2) is arranged at the bottom of the first support plate (1), and a pushing assembly (4) is arranged at the top of the support assembly (2); The pushing assembly (4) comprises a mounting block (41), a first connecting rod (42) is arranged on the side of the mounting block (41), a pulley (43) is arranged at one end of the first connecting rod (42), a touch block (44) is arranged on the side of the pulley (43), a second supporting plate (45) is arranged at the bottom of the touch block (44), a fixing block (46) is fixedly connected to the bottom of the second supporting plate (45), a second connecting rod (47) is rotatably connected to the side of the fixing block (46) through a bearing, an end of the second connecting rod (47) away from the fixing block (46) is rotatably connected to a gear (48) through a bearing, a side of the gear (48) is rotatably connected to a third connecting rod (49) through a bearing, and an end of the third connecting rod (49) away from the gear (48) is rotatably connected to the side of the second supporting plate (45) through a bearing.

2. The injection molded part ejection structure according to claim 1, characterized in that: The inner cavity of the mounting block (41) is provided with a fourth slide groove (410), the bottom of the touch block (44) is provided with a fifth slide groove (412), and the top of the second support plate (45) is provided with a third slider (411), one end of the third slider (411) extends to the inner cavity of the fifth slide groove (412) and is slidably connected to the inner cavity of the fifth slide groove (412).

3. The injection molded part ejection structure according to claim 1, characterized in that: The support assembly (2) comprises a base plate (21), a support rod (22) is arranged on the top of the base plate (21), a mold cavity (23) is arranged on the top of the support rod (22), and the inner cavity of the mold cavity (23) is provided with a first slide groove (24) and a mounting groove (25).

4. The injection molded part ejection structure according to claim 3, characterized in that: A slanted top assembly (3) is arranged on the top of the base plate (21), and the slanted top assembly (3) includes a support block (31). An slanted tip (32) is arranged in the inner cavity of the support block (31), and an insert (33) is arranged at one end of the slanted tip (32) away from the support block (31), and a first sliding block (34) is arranged on the side of the insert (33).

5. The injection molded part ejection structure according to claim 4, characterized in that: The inner cavity of the support block (31) is provided with a third slide groove (37), and one end of the inclined tip (32) is provided with a second slider (35), both sides of the second slider (35) extend to the inner cavity of the third slide groove (37) and are slidably connected to the inner cavity of the third slide groove (37), and the inner cavity of the insert (33) is provided with a second slide groove (36), and one end of the inclined tip (32) away from the support block (31) extends to the inner cavity of the second slide groove (36) and is slidably connected to the inner cavity of the second slide groove (36).

6. The injection molded part ejection structure according to claim 3, characterized in that: The inner cavity of the first slide groove (24) is provided with a straight push assembly (5), and the straight push assembly (5) includes a push pin (51). Fourth sliding blocks (52) are provided on both sides of the push pin (51), and a spring sheet (53) is provided on the top of the fourth sliding block (52).

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