Feeding device

Abstract

The invention discloses a feeding device which comprises a feeding die, an ejector plate and a locking mechanism, the feeding die is provided with an ejection position penetrating through the feeding die, and the ejection position is used for containing a workpiece; the ejector plate is elastically connected to one face of the feeding die and provided with an ejector piece, and the ejector piece is movably inserted into the ejection position and used for ejecting the workpiece. The locking mechanism comprises a positioning piece and a driving assembly which are connected with each other, and the positioning piece is arranged on the feeding die and can be inserted into the ejection position to lock the workpiece or be away from the ejection position to release the workpiece under the driving of the driving assembly. According to the feeding device, the workpiece can be locked, and therefore matched feeding can be conducted on a horizontal injection molding machine and a vertical injection molding machine.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding, and in particular to a feeding device. Background Art

[0002] In the related art, the basic structure of the existing feeding devices on the market is mainly used to match horizontal injection molding machines. This type of feeding device itself does not have a clamping function and can only perform ejection in the horizontal direction, so it is only suitable for feeding horizontal injection molding machines. When it is necessary to feed a vertical injection molding machine, the terminal PIN pins that the feeding device needs to feed need to be placed into the device from top to bottom. However, since the feeding device does not have a clamping function, the terminal PIN pins can still move in the vertical direction, so it cannot be matched with a vertical injection molding machine. Therefore, how to improve the matching degree of the feeding device is a problem that needs to be solved at present. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a feeding device that can lock the workpiece, so that both horizontal injection molding machines and vertical injection molding machines can be matched for feeding.

[0004] According to the first aspect of the present invention, the loading device comprises: a loading mold, an ejector plate and a locking mechanism, wherein the loading mold is provided with an ejector position penetrating the loading mold, and the ejector position is used to accommodate a workpiece; the ejector plate is elastically connected to one side of the loading mold and is provided with an ejector piece, and the ejector piece can be movably inserted in the ejector position for ejecting the workpiece; the locking mechanism comprises a positioning piece and a driving assembly connected to each other, the positioning piece is provided at the loading mold, and can be inserted into the ejector position under the drive of the driving assembly to lock the workpiece or move away from the ejector position to release the workpiece.

[0005] The feeding device according to the embodiment of the present invention has at least the following beneficial effects: the feeding device includes a feeding mold, a ejector plate and a locking mechanism, the ejector plate is elastically connected to one side of the feeding mold, and is provided with an ejector piece that can be inserted in the ejection position of the feeding mold, thereby realizing the ejection action of the workpiece in the ejection position; at the same time, a positioning piece is also provided in the feeding mold, the positioning piece is connected to a driving component and can be inserted into the ejection position under the drive of the driving component, thereby realizing the locking of the workpiece; therefore, the feeding device of the present application can realize the locking of the workpiece, thereby realizing the matching feeding of both horizontal injection molding machines and vertical injection molding machines.

[0006] According to some embodiments of the present invention, the driving assembly includes a first elastic assembly, a first wedge member and a second wedge member, the first elastic assembly is connected to the positioning member and the loading die, and is used to provide an elastic force for the positioning member to lock the workpiece, the second wedge member is slidably connected to the loading die and is connected to the positioning member, the second wedge member is provided with a second guide surface, the first wedge member is provided on the ejection plate, and is provided with a first guide surface; wherein, when the ejection plate approaches the loading die, the first guide surface can abut against the second guide surface, so that the second wedge member can drive the positioning member away from the ejection position, and at the same time cause the first elastic assembly to deform.

[0007] According to some embodiments of the present invention, the driving assembly further includes a connecting assembly, a plurality of positioning members are provided, and the connecting assembly connects the plurality of positioning members and the second wedge member.

[0008] According to some embodiments of the present invention, the ejection position includes a connected accommodating groove and an ejection hole. The ejection hole passes through a side of the upper mold close to the ejection plate for the ejection piece to pass through. The accommodating groove passes through a side of the upper mold away from the ejection plate, and the aperture of the accommodating groove is larger than that of the ejection hole for accommodating the workpiece.

[0009] According to some embodiments of the present invention, it also includes a guide post, a second elastic component and an undercut lock, the guide post is arranged on the loading mold and penetrates the ejection plate, the second elastic component is arranged between the loading mold and the ejection plate, the second elastic component is sleeved on the guide post and is used to provide an elastic force to make the loading mold and the ejection plate move away from each other, one end of the undercut lock is hinged to one of the loading mold and the ejection plate, and the other end is provided with an undercut for locking the other; wherein, when the undercut lock locks the loading mold and the ejection plate, the first guide surface abuts against the second guide surface, and the positioning member moves away from the accommodating groove, and when the undercut lock is rotated to release the lock, the loading mold and the ejection plate can move away from each other under the elastic force of the second elastic component, and the positioning member can lock the workpiece under the elastic force of the first elastic component.

[0010] According to some embodiments of the present invention, a positioning portion is provided on a side of the loading mold facing away from the ejection plate, and the positioning portion is matched with a positioning groove of a mold in an injection molding machine.

[0011] According to some embodiments of the present invention, at least two positioning portions are provided and are non-center-symmetrically distributed on a side of the loading mold away from the ejection plate.

[0012] According to some embodiments of the present invention, a first limiting member is further included, wherein the first limiting member is connected to the loading die and the ejecting plate and is used to limit the separation of the loading die and the ejecting plate.

[0013] According to some embodiments of the present invention, a second limiter is further included. The second limiter is arranged on a side of the upper mold facing the ejection plate or a side of the ejection plate facing the upper mold to limit the shortest distance between the upper mold and the ejection plate.

[0014] According to some embodiments of the present invention, a plurality of equal-height columns are further included. The plurality of equal-height columns are distributed on a side of the loading mold away from the ejector plate and are used to abut against the surface of the mold in the injection molding machine.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the feeding device of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0019] Figure 3 for Figure 1 A schematic structural diagram of a second viewing angle of the feeding device shown in FIG.

[0020] Figure 4 for Figure 1 A cross-sectional view of the feeding device shown in ;

[0021] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0022] Figure 6 for Figure 1 A schematic structural diagram of a third viewing angle of the feeding device shown in FIG.

[0023] Reference numerals:

[0024] A loading die 100; an ejection position 101; a receiving groove 102; an ejection hole 103; a positioning portion 110; an equal height column 120; a supporting portion 130; a ejection plate 200; a ejection member 210; a guide member 220; a handle 230; a locking mechanism 300; a positioning member 310; a first elastic component 321; a first wedge member 322; a first guide surface 3221; a second wedge member 323; a second guide surface 3231; a connecting component 324; a guide column 410; a second elastic component 420; an undercut lock 430; an undercut 431; a first limit member 440; a second limit member 450; a workpiece 500. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0026] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0029] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0030] Reference below Figures 1 to 6 A loading device according to an embodiment of the present invention is described.

[0031] like Figures 1 to 5As shown, the loading device according to an embodiment of the present invention includes: a loading mold 100, a ejector plate 200 and a locking mechanism 300. The loading mold 100 is provided with an ejector position 101 that penetrates the loading mold 100, and the ejector position 101 is used to accommodate the workpiece 500; the ejector plate 200 is elastically connected to one side of the loading mold 100 and is provided with an ejector member 210, and the ejector member 210 can be movably inserted in the ejector position 101 to eject the workpiece 500; the locking mechanism 300 includes a positioning member 310 and a driving assembly that are connected to each other. The positioning member 310 is provided on the loading mold 100, and can be inserted into the ejector position 101 under the drive of the driving assembly to lock the workpiece 500 or move away from the ejector position 101 to release the workpiece 500.

[0032] It can be understood that this loading device includes a loading mold 100, a ejector plate 200 and a locking mechanism 300. The ejector plate 200 is elastically connected to one side of the loading mold 100 and is provided with an ejector member 210 that can be inserted into the ejection position 101 of the loading mold 100, thereby realizing the ejection action of the workpiece 500 in the ejection position 101; at the same time, a positioning member 310 is also provided in the loading mold 100, and the positioning member 310 is connected to a driving component and can be inserted into the ejection position 101 under the drive of the driving component, thereby realizing the locking of the workpiece 500; therefore, the loading device of the present application can realize the locking of the workpiece 500, thereby realizing matching the loading of both horizontal injection molding machines and vertical injection molding machines.

[0033] It can be understood that the driving assembly includes a first elastic assembly 321, a first wedge 322 and a second wedge 323. The first elastic assembly 321 connects the positioning member 310 and the loading die 100, and is used to provide an elastic force for the positioning member 310 to lock the workpiece 500. The second wedge 323 is slidably connected to the loading die 100 and connected to the positioning member 310. The second wedge 323 is provided with a second guide surface 3231. The first wedge 322 is provided on the ejection plate 200 and is provided with a first guide surface 3221. When the ejection plate 200 is close to the loading die 100, the first guide surface 3221 can abut against the second guide surface 3231, so that the second wedge 323 can drive the positioning member 310 away from the ejection position 101, and at the same time, the first elastic assembly 321 is deformed. For example, Figure 1 to Figure 2As shown, in this embodiment, the ejector plate 200 is provided with a first wedge-shaped piece 322, the first wedge-shaped piece 322 is provided with a first guide surface 3221, the loading die 100 is provided with a second wedge-shaped piece 323, the second wedge-shaped piece 323 is provided with a second guide surface 3231, the second wedge-shaped piece 323 is connected to the positioning piece 310, and the first elastic component 321 connects the positioning piece 310 and the loading die 100; when the ejector plate 200 is close to the loading die 100 under the action of an external force, the first guide surface 3221 of the first wedge-shaped piece 322 and the second guide surface 3231 of the second wedge-shaped piece 323 are abutted against each other, so that the second wedge-shaped piece 323 can drive the positioning piece 310 0 is away from the ejection position 101, so that the workpiece 500 can be loaded onto the upper mold 100 or the upper mold 100 with material can eject the workpiece 500 into the injection molding machine under the action of the ejection member 210, and at the same time, the first elastic component 321 connected between the positioning member 310 and the upper mold 100 undergoes elastic deformation; and when the ejection plate 200 is away from the upper mold 100, after the second guide surface 3231 of the second wedge member 323 is no longer supported by the first guide surface 3221 of the first wedge member 322, the positioning member 310 can be inserted into the ejection position 101 under the elastic force of the first elastic component 321, thereby realizing the positioning of the workpiece 500.

[0034] Specifically, the first guide surface 3221 and the second guide surface 3231 may be curved surfaces or inclined surfaces.

[0035] It can be understood that the driving assembly further includes a connecting assembly 324, and a plurality of positioning members 310 are provided, and the connecting assembly 324 connects the plurality of positioning members 310 and the second wedge member 323. Figure 1 As shown, in this embodiment, the connecting component 324 is slidably connected to the loading mold 100, and the connecting component 324 is used to connect the second wedge member 323 and the multiple positioning members 310, so that when the first wedge member 322 abuts against the second wedge member 323, the second wedge member 323 can drive the multiple positioning members 310 away from the ejection position 101 through the connecting component 324, thereby unlocking the multiple workpieces 500, and when the first wedge member 322 is away from the second wedge member 323, the multiple workpieces 500 can restore the locking of the multiple workpieces 500 under the elastic force of the first elastic component 321.

[0036] It can be understood that the ejection position 101 includes a communicating receiving groove 102 and an ejection hole 103, the ejection hole 103 penetrates the side of the upper mold 100 close to the ejection plate 200 for the ejection member 210 to pass through, the receiving groove 102 penetrates the side of the upper mold 100 away from the ejection plate 200, and the aperture of the receiving groove 102 is larger than the ejection hole 103, so as to accommodate the workpiece 500. For example, Figures 4 to 5As shown, in this embodiment, the ejection position 101 includes a receiving groove 102 that passes through the side of the upper mold 100 away from the ejection plate 200 and an ejection hole 103 that passes through the side of the upper mold 100 close to the ejection plate 200. The receiving groove 102 and the ejection hole 103 are connected, and the hole diameter is larger than the ejection hole 103, so that the workpiece 500 can be inserted into the receiving groove 102 and placed in the receiving groove 102. When the ejection plate and the upper mold 100 are close, the ejection piece 210 is inserted into the ejection hole 103 and can eject the workpiece 500 in the receiving groove 102.

[0037] Specifically, a raised portion with a larger outer diameter is provided in the middle of the workpiece 500. When the workpiece 500 is inserted into the ejection position 101, one end of the workpiece 500 can pass through the receiving groove 102 and be inserted into the ejection hole 103 until the raised portion of the workpiece 500 abuts against the bottom of the receiving groove 102. The raised portion is provided with a notch. When the positioning member 310 is laterally inserted into the positioning position, it abuts against the notch surface of the raised portion of the workpiece 500, thereby locking the workpiece 500.

[0038] It can be understood that it also includes a guide post 410, a second elastic component 420 and an undercut lock 430. The guide post 410 is arranged on the upper mold 100 and penetrates the ejection plate 200. The second elastic component 420 is arranged between the upper mold 100 and the ejection plate 200. The second elastic component 420 is sleeved on the guide post 410 and is used to provide an elastic force to keep the upper mold 100 and the ejection plate 200 away from each other. One end of the undercut lock 430 is hinged to one of the upper mold 100 and the ejection plate 200, and the other end is hinged to the upper mold 100 and the ejection plate 200. One end is provided with an undercut 431 for locking the other; wherein, when the undercut lock 430 locks the upper mold 100 and the ejector plate 200, the first guide surface 3221 abuts against the second guide surface 3231, and the positioning member 310 is away from the accommodating groove 102. When the undercut lock 430 is rotated to release the lock, the upper mold 100 and the ejector plate 200 can move away from each other under the elastic force of the second elastic component 420, and the positioning member 310 can lock the workpiece 500 under the elastic force of the first elastic component 321.

[0039] For example, Figures 1 to 5As shown, in this embodiment, the upper mold 100 is provided with a guide column 410, and the guide column 410 is passed through the ejection plate 200. The second elastic component 420 is sleeved on the guide column 410 and is arranged between the upper mold 100 and the ejection plate 200, and is used to provide an elastic force that makes the upper mold 100 and the ejection plate 200 move away from each other, and one end of the undercut lock 430 is hinged to one of the upper mold 100 and the ejection plate 200, and the undercut 431 at the other end can buckle the other of the upper mold 100 and the ejection plate 200, thereby limiting the upper mold 100 and the ejection plate 200 from moving away from each other under the action of the elastic force. In this way, when starting to use it, the ejection plate 200 can be pressed against the upper material mold 100 first, so that the first guide surface 3221 of the first wedge-shaped member 322 can abut against the second guide surface 3231 of the second wedge-shaped member 323, so that the positioning member 310 is away from the ejection position 101, and then, the end of the undercut 431 of the undercut lock 430 is buckled on the upper material mold 100 or the ejection plate 200 to lock the upper material mold 100 and the ejection plate 200, and then the workpiece 500 can be loaded into the upper material device; after the workpiece 500 is loaded into the loading device, the undercut lock 430 is released to lock the upper material mold 100 and the ejection plate 200. 00 is locked, the first wedge member 322 and the second wedge member 323 also move away from each other, so that the positioning member 310 locks the workpiece 500 under the action of the first elastic component 321; subsequently, when the workpiece 500 in the loading device is loaded into the injection molding machine, the ejection plate 200 is pressed toward the upper mold 100, and the second wedge member 323 drives the positioning member 310 away from the ejection position 101 under the support of the first wedge member 322, and the ejection member 210 of the ejection plate 200 is inserted into the ejection position 101 to push the workpiece 500 out of the loading mold 100, thereby realizing the loading process of the loading device to the injection molding machine.

[0040] It is understandable that a positioning portion 110 is provided on the side of the loading mold 100 away from the ejection plate, and the positioning portion 110 is adapted to the positioning groove of the mold in the injection molding machine. Figure 6 As shown, in this embodiment, the positioning portion 110 provided on the side of the loading mold 100 away from the fixed plate can be adapted to the positioning groove in the injection molding machine mold and inserted into the positioning groove, thereby realizing the alignment of the loading device and the injection molding machine mold.

[0041] It is understandable that there are at least two positioning portions 110, which are non-center-symmetrically distributed on the side of the loading mold 100 away from the ejection plate. Figure 6 As shown, in this embodiment, by arranging at least two positioning parts 110 in a non-center-symmetrical manner, it is possible to effectively prevent mistakes and avoid reverse insertion into the mold of the injection molding machine.

[0042] It is understandable that a first stopper 440 is also included, and the first stopper 440 connects the upper mold 100 and the ejector plate 200 and is used to limit the upper mold 100 and the ejector plate 200 from separating. Figure 3 to Figure 4 As shown, in this embodiment, the provision of the first limiting member 440 can effectively prevent the loading mold 100 and the ejecting plate 200 from being separated from each other under the elastic force of the second elastic component 420, thereby achieving the effectiveness of the connection.

[0043] It is understandable that a second stopper 450 is further included, and the second stopper 450 is disposed on a side of the upper mold 100 facing the ejector plate 200 or a side of the ejector plate 200 facing the upper mold 100, so as to limit the minimum distance between the upper mold 100 and the ejector plate 200. Figures 4 to 6 As shown, in this embodiment, a second limiting member 450 is arranged between the loading mold 100 and the ejecting plate 200. Therefore, in the process of loading the workpiece 500 in the loading device into the injection molding machine, when the ejecting plate 200 can no longer approach the loading mold 100 due to the limitation of the second limiting member 450, that is, the ejecting plate 200 is in place, thus avoiding damage between the workpiece 500 and the injection molding machine mold.

[0044] It is understandable that there are also a plurality of equal height columns 120, which are distributed on the side of the upper mold 100 away from the ejector plate 200 and are used to abut against the surface of the mold in the injection molding machine. Figure 6 As shown, in this embodiment, a plurality of equal-height columns 120 are distributed on the side of the loading mold 100 facing away from the top plate 200, so as to achieve the flatness of the abutment between the loading mold 100 and the injection molding machine mold during the loading process of the loading device, thereby ensuring the consistency of the depth of the workpiece 500 entering the injection molding machine, and ultimately improving the processing accuracy of the injection molded parts molded by the injection molding machine.

[0045] It should be understood that a plurality of protruding positioning portions 110 are provided on the side of the loading mold 100 facing away from the ejection plate 200, and the ejection position 101 passes through the loading mold 100 and the positioning portions 110, and the workpiece 500 is supported by the positioning portions 110. By providing the positioning portions 110, the number of ejection positions 101 that accommodate the workpiece 500 can be increased, thereby increasing the number of workpieces 500 that can be loaded at one time.

[0046] It should be understood that a guide member 220 is provided on a side of the ejector plate 200 facing the upper mold 100 , and the ejector member 210 is provided on the ejector plate 200 and penetrates the guide member 220 , thereby improving the linearity of the movement of the ejector member 210 .

[0047] It should be understood that a handle 230 is provided on the side of the ejector plate 200 facing away from the loading mold 100 , so that the loading device can be manually grasped to load the material.

[0048] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A feeding device, characterized in that: include: A loading die is provided with an ejection position penetrating the loading die, and the ejection position is used to accommodate a workpiece; A ejector plate, the ejector plate is elastically connected to one side of the loading die and is provided with an ejector piece, the ejector piece can be movably inserted in the ejection position to eject the workpiece; The locking mechanism comprises a positioning member and a driving assembly connected to each other. The positioning member is arranged on the loading die and can be inserted into the ejection position to lock the workpiece or moved away from the ejection position to release the workpiece under the drive of the driving assembly.

2. The feeding device according to claim 1, characterized in that: The driving assembly includes a first elastic assembly, a first wedge and a second wedge. The first elastic assembly is connected to the positioning member and the loading die and is used to provide an elastic force for the positioning member to lock the workpiece. The second wedge is slidably connected to the loading die and connected to the positioning member. The second wedge is provided with a second guide surface. The first wedge is provided on the ejection plate and is provided with a first guide surface. When the ejection plate approaches the loading die, the first guide surface can abut against the second guide surface so that the second wedge can drive the positioning member away from the ejection position and cause the first elastic assembly to deform.

3. The feeding device according to claim 2, characterized in that: The driving assembly also includes a connecting assembly, and the positioning members are provided in plurality, and the connecting assembly connects the plurality of positioning members and the second wedge-shaped member.

4. The feeding device according to claim 2 or 3, characterized in that: The ejection position includes a connected accommodating groove and an ejection hole. The ejection hole passes through a side of the upper mold close to the ejection plate for the ejection piece to pass through. The accommodating groove passes through a side of the upper mold away from the ejection plate, and the aperture of the accommodating groove is larger than the ejection hole for accommodating the workpiece.

5. The feeding device according to claim 4, characterized in that: It also includes a guide post, a second elastic component and an undercut lock, wherein the guide post is arranged on the upper mold and penetrates the ejection plate, the second elastic component is arranged between the upper mold and the ejection plate, the second elastic component is sleeved on the guide post and is used to provide an elastic force to keep the upper mold and the ejection plate away from each other, one end of the undercut lock is hinged to one of the upper mold and the ejection plate, and the other end is provided with an undercut for locking the other; wherein, When the undercut lock locks the loading die and the ejecting plate, the first guide surface abuts against the second guide surface, and the positioning member is away from the accommodating groove. When the undercut lock is rotated to release the lock, the loading die and the ejecting plate can move away from each other under the elastic force of the second elastic component, and the positioning member can lock the workpiece under the elastic force of the first elastic component.

6. The feeding device according to claim 1, characterized in that: A positioning portion is provided on a side of the loading mold away from the ejection plate, and the positioning portion is matched with a positioning groove of a mold in the injection molding machine.

7. The feeding device according to claim 6, characterized in that: At least two positioning parts are provided and are non-center-symmetrically distributed on a side of the loading die away from the ejection plate.

8. The feeding device according to claim 1, characterized in that: It also includes a first limiting member, which connects the upper material mold and the upper material plate and is used to limit the separation of the upper material mold and the upper material plate.

9. The feeding device according to claim 1, characterized in that: A second limiting member is also included, and the second limiting member is arranged on a side of the upper mold facing the ejection plate or a side of the ejection plate facing the upper mold to limit the shortest distance between the upper mold and the ejection plate.

10. The feeding device according to claim 1, characterized in that: It also includes a plurality of equal-height columns, which are distributed on a side of the upper mold away from the ejector plate and are used to abut against the surface of the mold in the injection molding machine.

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