Plug shell injection equipment and its plug piece feeding device

Abstract

The utility model discloses a plug shell injection molding equipment and its plug piece feeding device. Plug shell injection molding equipment's plug piece feeding device includes: the feeding plate is equipped with the feeding groove for accommodating the plug piece, the jaw module, it includes one or more jaws for clamping the plug piece, the moving piece is used for driving the jaw module moves, the jaw module is located on the moving piece, the jaw module has the feeding position, when the feeding position, the jaw module is located above the feeding plate, and the jaw is opposite the feeding groove. The plug piece feeding device of the plug shell injection molding equipment can efficiently install the plug piece into the injection mold, and reduces the production cost.

Description

Technical Field

[0001] This utility model belongs to the field of manufacturing equipment for leakage protection plugs, specifically relating to a plug shell injection molding equipment and its insert feeding device. Background Technology

[0002] Power plugs are widely used in electrical appliances, typically located at one end of the appliance's power cord for connecting to a power source (such as AC mains power). A power plug includes prongs that connect to a power outlet, and these prongs and the housing of the residual current device (RCD) are injection molded together using an insert molding process. During injection molding, the prongs must first be installed into the mold, with at least a portion of the prongs extending into the mold cavity. Currently, prong loading is mostly done manually, which is inefficient and inefficient. Therefore, there is a need for a prong loading device for plug housing injection molding equipment that can automatically and efficiently install the prongs into the mold.

[0003] The information disclosed in the background section is only intended to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides a plug housing injection molding machine with a plug insert feeding device, which can efficiently install the plug insert into the injection mold and reduce production costs. The present invention also provides a plug housing injection molding machine with an automatic plug insert feeding function.

[0005] The first aspect of this utility model provides a plug housing injection molding equipment insert feeding device, which includes: The feeding plate is provided with a feeding groove for accommodating the insert; A gripper module, comprising one or more grippers for holding inserts; A movable component, used to drive the gripper module to move, wherein the gripper module is disposed on the movable component; The gripper module has a feeding position. In the feeding position, the gripper module is located above the feeding plate, and the gripper is facing the feeding slot.

[0006] In some preferred embodiments, the gripper includes a gripper housing and an elastic clamping member disposed on the gripper housing. The gripper housing is provided with a clamping groove for the insert to enter. At least a portion of the elastic clamping member is movably located within the clamping groove to press the insert into the clamping groove.

[0007] In some preferred embodiments, the elastic clamping member includes a spring and a pressure block, the spring being disposed between the gripper housing and the pressure block, a portion of the pressure block being movably located within the clamping groove.

[0008] In some preferred embodiments, the insert feeding device further includes a first push rod and a first cylinder for adjusting the height of the first push rod. The first cylinder is located below the feeding plate, and the feeding groove extends vertically through the feeding plate. The upper part of the first push rod is movably inserted into the feeding groove in the vertical direction.

[0009] In some preferred embodiments, the feeding plate is provided with multiple pairs of feeding slots, and the insert feeding device includes multiple pairs of first push rods corresponding to the multiple pairs of feeding slots. The lower sections of the multiple pairs of first push rods are connected to a top plate, and the top plate is connected to the piston rod of the cylinder.

[0010] In some preferred embodiments, the gripper module is rotatably mounted on the moving member, the gripper having a clamping groove for inserting a piece, and the gripper module having a downward-facing opening in the vertical direction when in the loading position; the gripper module also has a unloading position, in which the clamping groove extends horizontally.

[0011] In some preferred embodiments, the gripper module includes a mounting base rotatably connected to the movable member via a pivot extending in a horizontal direction.

[0012] In some preferred embodiments, the moving component includes an XY moving platform and a lifting rod, the XY moving platform having a slider capable of moving in a horizontal direction, the lifting rod being movably connected to the slider in a vertical direction, and the unloading position being higher than the loading position.

[0013] In some preferred embodiments, the gripper module further includes a second push rod and a second cylinder for driving the second push rod to move. The second push rod is movably inserted into the clamping groove. When the gripper module is in the loading position, the second push rod is inserted into the clamping groove from above.

[0014] The second aspect of this utility model provides a plug housing injection molding equipment for injection molding a plug housing and a prong into one piece. The plug housing injection molding equipment includes an injection molding machine and also includes the prong feeding device.

[0015] In some preferred embodiments, when the gripper module is in the unloading position, the grippers face the injection mold of the injection molding machine, and the insert held by the grippers is aligned with the insert positioning mechanism of the injection mold to allow the insert to be transferred into the insert positioning mechanism, or the slot of the gripper's gripping groove is aligned with the insert on the plug housing on the injection mold to allow the grippers to unload the plug housing.

[0016] This utility model has the following advantages: The insert feeding device of this utility model can be applied to plug housing injection molding equipment to realize automatic feeding of plug inserts. The inserts and plug housing are injection molded into one piece by the plug housing injection molding equipment, which improves the production efficiency of plug housing and reduces labor costs. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a plug housing injection molding equipment according to an embodiment of the present utility model, wherein the gripper module is in its unloading position.

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 3 This is a partial perspective view of a insert feeding device according to an embodiment of the present utility model, wherein the gripper module is in the feeding position.

[0021] Figure 4 This is a perspective view of a insert feeding device according to an embodiment of the present utility model.

[0022] Figure 5 for Figure 4 A magnified view of a section at point B in the middle.

[0023] Figure 6 This is a structural diagram of the gripper module in the feeding position according to an embodiment of the present utility model.

[0024] Figure 7 for Figure 6 A cross-sectional view along the CC direction.

[0025] Figure 8 This is a structural diagram of the gripper module in the unloading position according to an embodiment of the present invention.

[0026] in: 100. Plug housing injection molding equipment; 200. Insert feeding device; 300. Injection molding machine; 400. Insert; 1. Feeding plate; 11. Feeding trough; 12. Frame; 2. Gripper module; 21. Gripper; 211. Gripper housing; 213. Gripping groove; 214. Elastic clamping element; 22. Mounting base; 221. Positioning rod; 23. Rotary shaft; 3. Moving parts; 31. XY moving platform; 311. Slider; 32. Lifting rod; 4. First push rod; 40. First cylinder; 41. Top plate; 5. Second push rod; 50. Second cylinder; 6. Injection molding template; 61. Insert positioning mechanism. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is intended to aid in understanding the present invention, but does not constitute a limitation thereof.

[0028] In this document, the terms “upper,” “lower,” “front,” “rear,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and are not intended to 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.

[0029] Figures 1 to 8 The diagrams are drawn to scale. To keep the instructions concise, the proportions of each component are not listed individually. However, the proportions and positions of each component should be considered part of the content of this instruction manual.

[0030] Figure 1 An injection molding apparatus 100 for a plug housing is shown. This apparatus 100 is used to integrally mold a plug housing and a prong, utilizing a so-called "insert molding" injection molding process. Before injecting molten plastic, the prong is placed as an insert into the mold cavity of the injection mold, so that upon cooling, the prong is embedded in the plastic part, forming a plug housing with the prong inserted. This plug housing can serve as a component of a power plug for connecting electrical appliances (such as hair dryers and other household appliances) to a power outlet. (See reference...) Figure 1 As shown, the plug housing injection molding equipment 100 includes an injection molding machine 300, which includes an injection mold. The injection mold includes multiple templates, which are closed to form a mold cavity. The plug housing injection molding equipment 100 also includes a insert feeding device 200, which can install inserts onto one of the templates to achieve automatic feeding of inserts.

[0031] Figures 2 to 8 A specific insert feeding device 200 is shown. Combined with... Figures 2 to 8As shown, the plug housing injection molding equipment 100 includes a plug feeding device 200, a feeding plate 1, a gripper module 2, and a moving part 3.

[0032] The feeding plate 1 is provided with feeding slots 11 for accommodating inserts 400. Initially, the inserts 400 to be fed are placed in the feeding slots 11, waiting to be clamped by the gripper module 2. There are multiple feeding slots 11. In one specific embodiment, the feeding slots 11 are arranged in pairs, and the feeding plate 1 is provided with multiple pairs of feeding slots 11, each feeding slot 11 can accommodate one insert 400. The feeding slots 11 extend in the vertical direction, and the inserts 400 are inserted upright in the feeding slots 11. The feeding slots 11 can be through holes that penetrate the feeding plate 1 in the vertical direction, extending from the upper surface to the lower surface of the feeding plate 1. The feeding plate 1 is fixed on the frame 12 of the insert feeding device 200, and the feeding plate 1 can be horizontally arranged on the frame 12.

[0033] The gripper module 2 includes grippers 21 for holding the insert 400. The number of grippers 21 can be one or more. The number of grippers 21 corresponds one-to-one with the number of loading slots 11 on the loading plate 1, and the position of the grippers 21 corresponds one-to-one with the position of the loading slots 11 on the loading plate 1. If the loading slots 11 are arranged in pairs, then the grippers 21 are also arranged in pairs.

[0034] The movable component 3 is used to move the gripper module 2, which is mounted on the movable component 3. The gripper module 2 has a loading position, such as... Figure 3 , Figure 6 and Figure 7 As shown, in the loading position, the gripper module 2 is located above the loading plate 1, and the gripper 21 is directly opposite the loading slot 11. The moving part 3 enables the gripper module 2 to move between its loading and unloading positions. In the unloading position, the gripper module 2 is in a position that is parallel to and opposite to the template 6.

[0035] Reference Figure 7As shown, the gripper 21 includes a gripper housing 211 and an elastic clamping member 214 disposed on the gripper housing 211. The gripper housing 211 is provided with a gripping groove 213 for the insert 400 to enter, and at least a portion of the elastic clamping member 214 is movably located within the gripping groove 213 to press the insert 400 into the gripping groove 213. An elastic clamping member 214 may include a spring and a pressure block, with the spring disposed between the gripper housing 211 and the pressure block, and a portion of the pressure block movably located within the gripping groove 213. For example, the gripper housing 211 may have a transverse groove intersecting and communicating with the gripping groove 213, and the elastic clamping member 214 is disposed within the transverse groove, wherein the pressure block is movable within the transverse groove and has an initial state of extending into the gripping groove 213 under the action of the spring. Initially, the end of the pressure block is located in the clamping groove 213. When the insert 400 is inserted into the clamping groove 213, the insert 400 pushes the pressure block open. At the same time, under the restoring force of the spring, the pressure block presses the insert 400 tightly, thus pressing the insert 400 against the inner wall of the clamping groove 213, thereby achieving stable clamping of the insert 400.

[0036] Combination Figure 6 and Figure 7 As shown, the insert feeding device 200 also includes a first push rod 4 and a first cylinder 40 for adjusting the height of the first push rod 4. The first cylinder 40 is located below the feeding plate 1, and the feeding groove 11 extends vertically through the feeding plate 1. The upper part of the first push rod 4 is movably inserted into the feeding groove 11 in the vertical direction. The feeding plate 1 is provided with multiple pairs of feeding grooves 11. Correspondingly, the insert feeding device 200 includes multiple pairs of first push rods 4 corresponding to the multiple pairs of feeding grooves 11. The lower part of the multiple pairs of first push rods 4 is connected to a top plate 41, and the top plate 41 is connected to the piston rod of the cylinder. As the first push rod 4 is inserted into the feeding groove 11, the insert 400 in the feeding groove 11 can be pushed out, so that the insert 400 can be inserted into the clamping groove 213 of the gripper 21. The gripper module 2 also includes a positioning rod 221, which extends downward from the mounting base 22 of the gripper module 2. The lower end of the positioning rod 221 is level with or lower than the lower end of the gripper 21. Therefore, as the gripper module 2 moves downward to approach the loading plate 1, the lower end of the positioning rod 221 will first contact the loading plate 1 to limit the distance between the gripper module 2 and the loading plate 1, thus preventing damage to the gripper 21 or the insert 400 from being knocked off or deformed.

[0037] Reference Figure 5The gripper module 2 is rotatably mounted on the moving part 3, allowing it to flip and change the orientation of the gripping groove 213 and the insert 400 therein. For example, the mounting base 22 of the gripper module 2 is rotatably connected to the moving part 3 via a rotating shaft 23 extending horizontally. In one application scenario, when the gripper module 2 is in the loading position, the gripping groove 213 extends vertically and has a downward-facing opening. When the gripper module 2 is in the unloading position, the gripping groove 213 extends horizontally. The unloading position can be higher than the loading position. After the gripper module 2 grips the insert 400 on the lower loading plate 1, it moves upward to the unloading position and then flips to transfer the insert 400 onto the mold plate 6 of the injection molding machine 300.

[0038] Combination Figures 6 to 8 As shown, the gripper module 2 also includes a second push rod 5 and a second cylinder 50 for driving the second push rod 5 to move. The second push rod 5 is movably inserted into the clamping groove 213. When the gripper module 2 is in the loading position, the second push rod 5 is located above the clamping groove 213 and can be inserted into the clamping groove 213 from above. When the gripper module 2 is in the loading position, the first push rod 4 and the second push rod 5 are located on both sides of the gripper 21. The first push rod 4 is used to push the insert 400 into the clamping groove 213, and the second push rod 5 is used to push the insert 400 out of the clamping groove 213, for example, to push it out onto the template 6. The second push rod 5 and the second cylinder 50 are mounted on the mounting base 22 and move together with the gripper 21. When the gripper module 2 moves to the unloading position, the second push rod 5 flips with the gripper module 2, and the orientation of the second push rod 5 changes from vertical to horizontal. The second push rod 5 can be pushed out horizontally, inserted into the clamping groove 213, and push out the insert 400 therein.

[0039] Combination Figure 4 As shown, the moving component 3 may include an XY moving platform 31 and a lifting rod 32. The XY moving platform 31 has a slider 311 capable of moving horizontally, and the lifting rod 32 is movably connected to the slider 311 in the vertical direction. The XY moving platform 31 may adopt a known structure. A specific XY moving platform 31 may include an X-axis guide rail and a Y-axis guide rail, and the slider 311 can translate horizontally along the X-axis guide rail and the Y-axis guide rail. A Z-axis guide rail is provided on the slider 311, and the lifting rod 32 can move up and down along the Z-axis guide rail, thereby driving the gripper module 2 to move up and down.

[0040] The insert feeding device 200 may also include a flipping drive device, which is connected to the gripper module 2 to drive the gripper module 2 to flip. For example, the flipping drive device may be a cylinder, and the piston rod of the cylinder is hinged to the gripper module 2 (e.g., mounting base 22). As the piston rod of the cylinder extends and retracts, it can drive the gripper module 2 to flip around the pivot 23.

[0041] Combination Figure 5 and Figure 8 As shown, when the gripper module 2 is in the unloading position, the gripper 21 faces the injection mold plate 6 of the injection molding machine 300. The insert 400 held by the gripper 21 is aligned with the insert positioning mechanism 61 of the injection mold plate 6 to allow the insert 400 to be transferred into the insert positioning mechanism 61, thus realizing the loading of the insert 400. After one injection molding process is completed, the injection molding machine 300 opens the mold, and the gripper module is in a position that is flat and opposite to the mold plate 6. The slot of the gripping groove 213 of the gripper 21 is aligned with the insert 400 on the plug housing on the injection mold plate 6. The insert 400 can be inserted into the gripping groove 213. The plug housing with the insert 400 is removed from the mold plate 6 by the gripper module 2, and the plug housing with the insert 400 is unloaded by the gripper 21.

[0042] In the plug housing injection molding equipment 100 of the embodiment, initially, the gripper module 2 moves above the loading plate 1 (e.g., Figure 4 (The loading position is indicated by the dashed line). The gripper 21's clamping groove 213 is directly opposite the insert 400 on the loading plate 1 below. The first push rod 4 moves upward, pushing the insert 400 from the loading groove 11 into the clamping groove 213. The moving part 3 drives the gripper module 2 to move upward to the same height as the mold plate 6 of the injection molding machine 300. Then, the gripper module 2 is rotated (for example, rotated 90 degrees) so that the gripper module 2 is facing the mold plate 6, that is, the gripper module 2 is transferred to its unloading position. The second push rod 5 pushes out, pushing the insert 400 out of the clamping groove 213. The pushed-out insert 400 is directly inserted into the mold plate 6. After injection molding is completed, the injection molding machine 300 opens the mold, and the gripper module 2 is in its unloading position. The gripping groove 213 of the gripper 21 is directly facing the product on the template 6, that is, the plug housing with the insert 400. The insert 400 can be inserted into the gripping groove 213 of the gripper 21, and the product is unloaded by the insert feeding device 200.

[0043] The insert feeding device 200 of the embodiment can be applied to the plug housing injection molding equipment 100 to realize the automatic feeding of the plug insert 400. The plug insert 400 and the plug housing are injection molded into one piece by the plug housing injection molding equipment 100, which improves the production efficiency of the plug housing and reduces labor costs.

[0044] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0045] Those skilled in the art will understand that, unless otherwise stated, the singular forms “a,” “b,” and “the” used herein may also include the plural forms. It will be further understood that “multiple” in this invention refers to two or more, and other quantifiers are similarly understood.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The above embodiments are only for illustrating the technical concept and features of this utility model, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly, and should not be construed as limiting the protection scope of this utility model. All equivalent transformations or modifications made based on the principles of this utility model should be covered within the protection scope of this utility model.

Claims

1. A plug housing injection molding equipment insert feeding device, characterized in that, include: The feeding plate is provided with a feeding groove for accommodating the insert; A gripper module, comprising one or more grippers for holding inserts; A movable component, used to drive the gripper module to move, wherein the gripper module is disposed on the movable component; The gripper module has a feeding position. In the feeding position, the gripper module is located above the feeding plate, and the gripper is facing the feeding slot.

2. The insert feeding device according to claim 1, characterized in that, The gripper includes a gripper shell and an elastic clamping member disposed on the gripper shell. The gripper shell is provided with a clamping groove for the insert to enter. At least a portion of the elastic clamping member is movably located in the clamping groove to press the insert into the clamping groove.

3. The insert feeding device according to claim 2, characterized in that, The elastic clamping member includes a spring and a pressure block, the spring being disposed between the gripper housing and the pressure block, and a portion of the pressure block being movably located within the clamping groove.

4. The insert feeding device according to claim 1, characterized in that, The insert feeding device further includes a first push rod and a first cylinder for adjusting the height of the first push rod. The first cylinder is located below the feeding plate, and the feeding groove extends vertically through the feeding plate. The upper part of the first push rod is movably inserted into the feeding groove in the vertical direction.

5. The insert feeding device according to claim 4, characterized in that, The feeding plate is provided with multiple pairs of feeding slots, and the insert feeding device includes multiple pairs of first push rods corresponding to the multiple pairs of feeding slots. The lower part of the multiple pairs of first push rods is connected to a top plate, and the top plate is connected to the piston rod of the cylinder.

6. The insert feeding device according to claim 1, characterized in that, The gripper module is rotatably mounted on the moving part. The gripper has a clamping groove for inserting pieces to enter. When the gripper module is in the loading position, the clamping groove extends in the vertical direction and has a downward-facing opening. The gripper module also has a unloading position. When the gripper module is in the unloading position, the clamping groove extends in the horizontal direction.

7. The insert feeding device according to claim 6, characterized in that, The gripper module includes a mounting base, which is rotatably connected to the movable component via a rotating shaft that extends in a horizontal direction. The moving component includes an XY moving platform and a lifting rod. The XY moving platform has a slider that can move in the horizontal direction. The lifting rod is movably connected to the slider in the vertical direction. The unloading position is higher than the loading position.

8. The insert feeding device according to claim 2 or 6, characterized in that, The gripper module further includes a second push rod and a second cylinder for driving the second push rod to move. The second push rod is movably inserted into the clamping groove. When the gripper module is in the loading position, the second push rod is inserted into the clamping groove from above.

9. A plug housing injection molding equipment for integrally injection molding a plug housing and a prong, the plug housing injection molding equipment comprising an injection molding machine, characterized in that, The plug housing injection molding equipment further includes the insert feeding device as described in any one of claims 1 to 8.

10. The plug housing injection molding equipment according to claim 9, characterized in that, When the gripper module is in the unloading position, the grippers face the injection mold of the injection molding machine, and the insert held by the grippers is aligned with the insert positioning mechanism of the injection mold to allow the insert to be transferred into the insert positioning mechanism, or the slot of the gripper's gripping groove is aligned with the insert on the plug housing on the injection mold to allow the grippers to unload the plug housing.

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