Ejection device for injection-molded parts and ejection apparatus for injection-molded parts

Abstract

The application relates to the technical field of ejection equipment, in particular to an ejection device for injection-molded parts, which is used for ejecting injection-molded parts fixed on positioning seats, the positioning seat is provided with a positioning through hole, the inner wall of the positioning through hole clamps and fixes the injection-molded part, and the ejection device comprises a main body, a first ejection part corresponding to one part of the positioning through hole, one end of the first ejection part being fixedly connected with the main body, and the opposite end extending along the direction of the center line of the corresponding positioning through hole, and a second ejection part corresponding to another part of the positioning through hole, one end of the first ejection part being fixedly connected with the main body, and the opposite end extending along the direction of the center line of the corresponding positioning through hole, and the extension distance of the first ejection part is greater than that of the second ejection part. Compared with the related art, different ejection parts are adopted to realize batch ejection, the driving device is prevented from being overloaded due to overpressure, meanwhile, the positioning seat can be provided with a larger area, and the processing efficiency is improved.

Description

[Technical Field]

[0001] This application relates to the field of ejection equipment technology, and in particular to an ejection device and an ejection equipment for injection molded parts. [Background Technology]

[0002] In workpiece machining, precise positioning is a crucial step, ensuring the workpiece's stability during processing and guaranteeing the smooth progress of subsequent procedures. A cavity positioning method is typically used, where the workpiece is placed into a cavity that matches the designed contour and secured by the inner wall's locking mechanism. Once positioning is complete, machining operations can be performed on the workpiece, which is then removed after machining is finished.

[0003] However, since injection molded parts are mostly made of elastic materials and are firmly attached to the inner wall of the cavity, they need to be removed manually one by one, which is inefficient and may damage the surface of the workpiece during the operation, thus affecting the quality of the final product.

[0004] Therefore, how to efficiently remove injection-molded workpieces is a problem that urgently needs to be solved by those skilled in the art. [Utility Model Content]

[0005] To solve the above problems and efficiently remove injection molded parts, this application provides an ejection device and an ejection equipment for injection molded parts.

[0006] In a first aspect, embodiments of this application provide an ejection device for injection molded parts, used to eject injection molded parts fixed by a positioning seat. The positioning seat is provided with a plurality of positioning through holes, and the inner wall of the positioning through holes holds and fixes the injection molded parts. The ejection device for injection molded parts includes: a main body; a first ejector, corresponding to a portion of the positioning through holes, one end of the first ejector being fixedly connected to the main body, and the other end extending along the direction of the center line of the corresponding positioning through hole; and a second ejector, corresponding to the other portion of the positioning through holes, one end of the first ejector being fixedly connected to the main body, and the other end extending along the direction of the center line of the corresponding positioning through hole, and the extension distance of the first ejector being greater than the extension distance of the second ejector.

[0007] In some embodiments, the main body is provided with a first blind hole and a second blind hole corresponding to the first ejector and the second ejector, respectively. The inner diameters of the first blind hole and the second blind hole are respectively set to match the size of the first ejector and the second ejector. One end of the first ejector is detachably connected to the inner wall of the first blind hole, and one end of the second ejector is detachably connected to the inner wall of the second blind hole.

[0008] In some embodiments, a guide member is also included, one end of which is fixedly connected to the main body, and the other end of which extends in a direction parallel to the center line of the positioning through hole; the position of the guide member corresponds to the through hole on the positioning seat.

[0009] In some embodiments, the first ejector and the second ejector are arranged alternately in one dimension.

[0010] In some embodiments, the first ejector and the second ejector are alternately arranged in two mutually perpendicular dimensions.

[0011] Secondly, embodiments of this application also provide an ejection device for injection molded parts, used to eject injection molded parts fixed by a positioning seat. The positioning seat has a positioning through hole, and the inner wall of the positioning through hole holds and fixes the injection molded part. The ejection device for injection molded parts includes: an ejection device for injection molded parts as described above; a driving device, which is fixedly connected to the main body of the ejection device for injection molded parts and drives the main body to move toward or away from the positioning seat to eject the injection molded part; and a collecting device, which is disposed opposite to the ejection device for injection molded parts, and includes: a receiving cavity, which has an opening communicating with the outside, the opening facing the ejection device for injection molded parts; and a fixing device, which includes fixing members disposed opposite to each other, and a receiving space is provided between the fixing members for receiving the positioning seat, the receiving space corresponding to the opening.

[0012] In some embodiments, the fixing member is provided with a fixing groove, and the fixing grooves of the fixing member are arranged facing each other; the inner wall of the fixing groove is used to hold the protrusions that fix the outer contour of the positioning seat so that the positioning seat is suspended.

[0013] In some embodiments, the fixing groove communicates with the external space through a notch, the centerline of which is perpendicular to the centerline of the opening.

[0014] Compared with related technologies, the ejection device for injection molded parts provided in this application uses different ejector parts to achieve batch ejection, which greatly reduces the driving force required by the drive device and effectively avoids overpressure and overload of the drive device; at the same time, the positioning seat can also be set with a larger area, ejecting more workpieces in one ejection operation, thus improving processing efficiency. [Attached Image Description]

[0015] Figure 1 A three-dimensional structural diagram of an injection molded part is provided for related technologies.

[0016] Figure 2 A three-dimensional structural diagram of a positioning seat provided for related technologies.

[0017] Figure 3This is a three-dimensional structural diagram of an ejection device for injection molded parts provided in one embodiment of this application.

[0018] Figure 4 for Figure 2 The diagram shows the assembly relationship between the ejector device and the positioning seat for injection molded parts.

[0019] Figure 5 for Figure 2 The diagram shows an exploded three-dimensional structure of the ejection device for injection molded parts.

[0020] Figure 6 for Figure 2 The diagram shows the working state of the ejection device for injection molded parts at a specific moment. 【Detailed Implementation Methods】

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] In the description of the embodiments of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0024] In workpiece machining, precise positioning is a crucial step, ensuring the workpiece's stability during processing and guaranteeing the smooth progress of subsequent procedures. A cavity positioning method is typically used, where the workpiece is placed into a cavity that matches the designed contour and secured by the inner wall's locking mechanism. Once positioning is complete, machining operations can be performed on the workpiece, which is then removed after machining is finished.

[0025] However, since injection molded parts are mostly made of elastic materials, their engagement with the inner wall of the cavity is relatively firm. Figure 1The illustration shows an injection molded part 10 provided by related technology, which is used to provide a sealing function for a product. The outer surface of the injection molded part is provided with multiple arc-shaped protrusions to enhance the sealing contact. Because the arc-shaped protrusions cooperate with the inner wall of the cavity, the engagement between the injection molded part and the inner wall of the cavity is relatively firm. However, it is necessary to manually remove them one by one, which is inefficient and may cause damage to the surface of the workpiece during the operation, thereby affecting the quality of the final product.

[0026] Based on this, this application provides an ejector device 20 for injection molded parts. The following embodiments use the ejector device 20 to eject the injection molded part 10 as an example for explanation. Please refer to the relevant references. Figure 2 and Figure 3 , Figure 2 A three-dimensional structural diagram of the positioning seat provided for related technologies. Figure 3 This is a three-dimensional structural diagram of an ejection device for injection molded parts provided in one embodiment of this application.

[0027] The positioning seat 30 provided by the related technology is provided with a plurality of positioning through holes 31 arranged in an array, and the inner wall of each positioning through hole 31 is used to hold and fix one of the injection molded parts 10.

[0028] The ejection device for injection molded parts is used to eject the injection molded part 10 from the positioning seat 30. It includes an ejection device 21, a driving device 23, and a collecting device 25. The driving device 23 is fixedly connected to the main body of the ejection device 21 and drives the main body to move towards or away from the positioning seat 30 to eject the injection molded part 10. The collecting device 25 is disposed opposite to the ejection device 21. The collecting device 25 includes a receiving cavity 251 and a fixing device 253. The receiving cavity has an opening 2511 communicating with the outside, and the opening 2511 faces the ejection device 21. The fixing device 253 includes opposing fixing members 2531, and a receiving space is provided between the fixing members 2531 for accommodating the positioning seat 30. The receiving space corresponds to the opening 2511.

[0029] Specifically, please refer to Figure 3 The fixing member 2531 is provided with a fixing groove, and the fixing grooves of the fixing member 2531 are arranged facing each other. The fixing groove is connected to the external space through a notch 2533, and the center line of the notch 2533 is perpendicular to the center line of the opening 2511. The protrusion 33 of the outer contour of the positioning seat 30 enters the fixing groove through the notch 2533. The inner wall of the fixing groove 253 holds and fixes the protrusion 33 so that the positioning seat 30 is suspended. The positioning seat 30 is accommodated in the accommodating space.

[0030] It is understood that the drive device 23 can be an independent drive device, such as a motor, cylinder, or hydraulic device; it can also utilize the drive device of other processing equipment, such as the servo drive system of a CNC (Computer Numerical Control) based machining center. In this embodiment, the drive device 23 can be a hydraulic cylinder, and the piston rod of the drive device 23 is connected to the body of the injection molding ejection device 21 by bolts. The pressure difference provided by the liquid on both sides of the piston of the drive device 23 is transmitted to the body of the injection molding ejection device 21 through the piston rod, so that the body moves toward or away from the positioning seat 30.

[0031] Please see Figure 4 , Figure 4 for Figure 2 The diagram shows the assembly relationship between the ejector device 21 for injection molded parts and the positioning seat. The ejector device 21 includes a main body 211, a first ejector 213, and a second ejector 215. The main body 211 has a first surface 2111 and a second surface 2113 facing away from each other. The first surface 2111 is disposed opposite to the positioning seat 30. For one portion of the positioning through hole 31, one end of the first ejector 213 is fixedly connected to the first surface 2111, and the other end extends along the centerline of the corresponding positioning through hole 31. For the other portion of the positioning through hole 31, one end of the second ejector 215 is fixedly connected to the first surface 2111, and the other end extends parallel to the centerline of the corresponding positioning through hole 31. The extension distance of the first ejector 213 is greater than the extension distance of the second ejector 215. The dimensions of both the first ejector 213 and the second ejector 215 are smaller than the inner diameter of the positioning through hole 31.

[0032] The first ejector 213 and the second ejector 215 are arranged alternately in one dimension. Specifically, along one extending direction of the main body 211, the first ejector 213 and the second ejector 215 are arranged alternately. In other embodiments, the first ejector 213 and the second ejector 215 are arranged alternately in two dimensions. Specifically, along two mutually perpendicular extending directions of the main body 211, the first ejector 213 and the second ejector 215 are arranged alternately.

[0033] The main body 211 is fixedly connected to the driving device 23 and moves toward or away from the positioning seat 30 under the drive of the driving device 23, so that the first ejector 213 and the second ejector 215 enter the positioning through hole 31 in sequence and eject the corresponding injection molded parts in sequence.

[0034] The main body 211 moves toward the positioning seat 30 under the drive of the driving device 23, so that the first ejector 213 and the second ejector 215 enter the positioning through hole 31 in sequence and eject the injection molded part. After all the injection molded parts have been ejected, the main body 211 moves away from the positioning seat 30 under the drive of the driving device 23, so that the first ejector 213 and the second ejector 215 exit the positioning through hole 31 in sequence, and the ejection operation is completed.

[0035] Please see Figure 5 , Figure 5 for Figure 2 The diagram shows an exploded perspective view of the ejection device for injection molded parts. The first surface of the main body 211 is provided with a first blind hole 2115 and a second blind hole 2117 corresponding to the first ejector 213 and the second ejector 215, respectively. The inner diameters of the first blind hole 2115 and the second blind hole 2117 are respectively set to match the dimensions of the first ejector 213 and the second ejector 215. One end of the first ejector 213 is detachably connected to the inner wall of the first blind hole 2115, and the other end extends parallel to the center line of the positioning through hole 31. One end of the second ejector 215 is detachably connected to the inner wall of the second blind hole 2117, and the other end extends parallel to the center line of the positioning through hole 31, with the extension distance of the first ejector 213 being greater than that of the second ejector 215. This allows for convenient maintenance or replacement of the first ejector 213 and the second ejector 215.

[0036] In this embodiment, a bolt is screwed into the second surface 2113 of the main body 211, and the first ejector 213 and the second ejector 215 are connected to the inner wall of the blind hole 2115 by means of bolt fixing.

[0037] Please refer to the following: Figure 4 and Figure 6 , Figure 6 for Figure 2 The diagram shows the working state of the ejection device for injection molded parts at a specific moment. The first ejector 213 and the second ejector 215 have different extension distances, and their ejection sequence is asynchronous. This means that for the positioning seat 30 of the same area, batch ejection can greatly reduce the driving force required by the driving device 23, effectively avoiding overpressure and overload of the driving device 23; at the same time, the positioning seat 30 can also be provided with a larger area and more positioning through holes 31, ejecting more workpieces in one operation, thus improving processing efficiency.

[0038] The ejection device 21 for injection molded parts also includes a guide member 217. One end of the guide member 217 is fixedly connected to the first surface 2111 of the main body 211, for example, by bolting or welding. The other end extends along a direction parallel to the center line of the positioning through hole 31. The positioning seat 30 has a through hole corresponding to the guide member 217. When the main body 211 moves toward the positioning seat 30 under the drive of the driving device 23, the guide member 217 passes through the through hole 35. The guide member 217 maintains the positional correspondence between the main body 211 and the positioning seat 30 during relative movement.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An ejection device for injection molded parts, used to eject an injection molded part fixed by a positioning seat, wherein the positioning seat is provided with a plurality of positioning through holes, and the inner wall of the positioning through holes holds and fixes the injection molded part, characterized in that, include: main body; A first ejector, corresponding to a portion of the positioning through hole, has one end fixedly connected to the main body, and the other end extending along the centerline of the corresponding positioning through hole; and The second ejector is corresponding to the other part of the positioning through hole. One end of the first ejector is fixedly connected to the main body, and the other end extends along the center line of the corresponding positioning through hole. The extension distance of the first ejector is greater than the extension distance of the second ejector.

2. The ejection device for injection molded parts according to claim 1, characterized in that, The main body is provided with a first blind hole and a second blind hole respectively corresponding to the first ejector and the second ejector. The inner diameters of the first blind hole and the second blind hole are respectively set to match the size of the first ejector and the second ejector. One end of the first ejector is detachably connected to the inner wall of the first blind hole, and one end of the second ejector is detachably connected to the inner wall of the second blind hole.

3. The ejection device for injection molded parts according to claim 1, characterized in that, It also includes a guide member, one end of which is fixedly connected to the main body, and the other end of which extends in a direction parallel to the center line of the positioning through hole; the position of the guide member corresponds to the through hole on the positioning seat.

4. The ejection device for injection molded parts according to claim 1, characterized in that, The first ejector and the second ejector are arranged alternately in one dimension.

5. The ejection device for injection molded parts according to claim 1, characterized in that, The first ejector and the second ejector are alternately arranged in two mutually perpendicular dimensions.

6. An ejection device for injection molded parts, used to eject an injection molded part fixed by a positioning seat, wherein the positioning seat has a positioning through hole, and the inner wall of the positioning through hole holds and fixes the injection molded part, characterized in that, include: Ejection device for injection molded parts as described in any one of claims 1-5; A driving device is fixedly connected to the main body of the ejector device for injection molding parts, and drives the main body to move toward or away from the positioning seat to eject the injection molding part; and A collecting device, disposed opposite to the ejection device for the injection molded part, includes: A receiving cavity having an opening communicating with the outside, the opening facing the ejection device for the injection molded part; The fixing device includes fixing members arranged opposite each other, and there is an accommodating space between the fixing members for accommodating the positioning seat, the accommodating space corresponding to the opening.

7. The ejection device for injection molded parts according to claim 6, characterized in that, The fixing member is provided with a fixing groove, and the fixing grooves of the fixing member are arranged facing each other; the inner wall of the fixing groove is used to hold the protrusions that fix the outer contour of the positioning seat so that the positioning seat is suspended.

8. The ejection device for injection molded parts according to claim 7, characterized in that, The fixing groove connects to the external space through a notch, and the center line of the notch is perpendicular to the center line of the opening.

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