Forming die for special-shaped cover plate with buckle groove

Abstract

The utility model discloses a forming die of a special-shaped cover plate with a buckle groove, which comprises a front die assembly and a rear die assembly, the front die assembly comprises a front fixed plate, a movable plate, a front die plate, an inclined ejector rod and a front die core, and the rear die assembly comprises a rear die plate and a rear die core fixed on the rear die plate; the front fixing plate and the front mold core are respectively fixed on the front side and the rear side of the front mold plate; a groove is formed in the front side face of the front mold plate, and the movable plate is arranged in the groove and can slide in the front-back direction. The front mold plate is provided with a through hole, the front mold core is provided with an inclined guide hole matched with the inclined ejector rod, the inclined ejector rod is arranged in the through hole and the inclined guide hole in a penetrating mode, the front end of the inclined ejector rod is in sliding connection with the movable plate, and the rear end of the inclined ejector rod is provided with a forming block for forming a buckle groove; a plurality of elastic pieces are arranged between the movable plate and the front fixed plate; and during mold opening, the elastic piece enables the inclined ejector rod to move so as to drive the forming block to be separated from the buckle groove. The utility model can reduce the area of wire clamping marks on the surface of a product and improve the quality of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a molding mold of a special-shaped cover plate with a buckle groove. Background Art

[0002] Existing injection molds are widely used in the manufacture of various plastic parts such as covers and base plates. For some special-shaped covers, it is generally difficult to form them. Figure 1 and Figure 2 As shown, it is a structural schematic diagram of a special-shaped cover plate in the prior art, the top surface of the special-shaped cover plate 10 is provided with two relatively arranged protrusions 11, a through groove 12 penetrating the special-shaped cover plate 10 is provided between the two protrusions 11, and the inner side surfaces of the two protrusions 11 opposite to each other are provided with multiple snap grooves 13 for installing snaps. Due to the special position of the snap grooves 13, if the front mold slider is used for molding, a large area of ​​clamping line marks will be left on the product surface after demolding, affecting the product quality. Utility Model Content

[0003] The utility model provides a forming die of a special-shaped cover plate with a snap groove, which can reduce the area of ​​the clamping line mark on the surface of the product and improve the product quality.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The embodiment of the utility model provides a forming mold of a special-shaped cover plate with a snap groove, comprising a front mold assembly and a rear mold assembly, wherein the front mold assembly comprises a front fixed plate, a movable plate, a front template, an inclined ejector rod and a front mold core, and the rear mold assembly comprises a rear template and a rear mold core fixed on the rear template; the front fixed plate and the front mold core are respectively fixed to the front side and the rear side of the front template; the front side surface of the front template is provided with a groove, the movable plate is arranged in the groove and can slide relative to the front template along the front and rear directions; the front template is provided with a perforation, the The front mold core is provided with an inclined guide hole adapted to the inclined ejector rod, the inclined ejector rod is inserted in the through hole and the inclined guide hole, the front end of the inclined ejector rod is slidably connected with the movable plate, and the rear end of the inclined ejector rod is provided with a forming block for forming a buckle groove; a plurality of elastic members are provided between the movable plate and the front fixed plate; after the mold is closed, the front mold core, the rear mold core and the forming block are combined to form a forming cavity, and the elastic member is compressed; when the mold is opened, the elastic restoring force of the elastic member causes the inclined ejector rod to move toward the rear side along the inclined guide hole to drive the forming block to escape from the buckle groove.

[0006] In some embodiments, the front mold assembly is provided with a main glue inlet channel that penetrates through the front mold assembly along the front-to-back direction, and the main glue inlet channel extends into the through groove of the special-shaped cover plate.

[0007] In some embodiments, a through slot is provided in the middle of the movable plate, and the front template includes a connecting portion, which passes through the slot and abuts against the rear side of the front fixed plate; the main glue inlet channel passes through the front fixed plate and the front mold core, and passes through the front template from the front side of the connecting portion.

[0008] In some embodiments, a plurality of guide rods extending in the front-to-back direction are fixed to the front template, and the movable plate is provided with a plurality of guide holes adapted to the guide rods, and the guide rods are inserted into the guide holes and can slide along the guide holes.

[0009] In some embodiments, the elastic member is a spring extending in the front-to-back direction, and the spring is evenly and symmetrically distributed relative to the center of the movable plate.

[0010] In some embodiments, a plurality of guide rail seats are provided on the back side of the movable plate, and the guide rail seats are provided with guide rail grooves, the extension direction of the guide rail grooves is parallel to the extension direction of the buckle grooves, and the front end of the inclined lift rod is slidably matched with the guide rail grooves.

[0011] In some embodiments, the rear mold assembly further includes an ejector plate located at the rear side of the rear mold plate, the ejector plate being connected to a plurality of ejector pins, and the ejector pins pass through the rear mold plate and the rear mold core.

[0012] The utility model has at least the following beneficial effects: after the entire mold is closed, the front mold core, the rear mold core and the forming block are combined to form a forming cavity to form a special-shaped cover plate, and the forming block is inserted into the special-shaped cover plate to form a snap groove on the special-shaped cover plate, and at the same time, the elastic member is compressed by the movable plate and the front fixed plate; when the entire mold is opened, the elastic member will exert an elastic reset force, thereby pushing the movable plate, so that the inclined ejector rod moves toward the rear side along the inclined guide hole, so as to drive the forming block to disengage from the snap groove and realize demolding; therefore, the utility model does not use a front mold slider, but uses a inclined ejector rod structure for demolding, which can reduce the area of ​​the clamping line mark on the product surface and improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a special-shaped cover plate in the prior art;

[0014] Figure 2 for Figure 1 The structural schematic diagram of the special-shaped cover plate shown in another viewing angle;

[0015] Figure 3 This is a structural schematic diagram of a forming mold of a special-shaped cover plate with a buckle groove according to an embodiment of the utility model;

[0016] Figure 4 It is a cross-sectional schematic diagram of a forming mold of a special-shaped cover plate with a buckle groove according to an embodiment of the utility model;

[0017] Figure 5 It is a structural schematic diagram of a forming mold of a special-shaped cover plate with a buckle groove in one embodiment of the utility model after removing the front fixing plate, the front template and the front mold core;

[0018] Figure 6 for Figure 5 The structure schematic diagram of the forming mold of the special-shaped cover plate with the snap groove is shown in another perspective.

[0019] Wherein, the accompanying drawings are marked as follows:

[0020] Special-shaped cover plate 10, protruding portion 11, through slot 12, buckle slot 13;

[0021] Front mold assembly 100, main glue inlet channel 101, front fixed plate 110, movable plate 120, elastic member 121, slot 122, front mold plate 130, connecting portion 131, front mold core 140, inclined ejector rod 150, forming block 151, guide rod 160, guide rail seat 170;

[0022] The rear mold assembly 200 , the rear mold plate 210 , the rear mold core 220 , the ejector plate 230 , and the ejector 240 . DETAILED DESCRIPTION

[0023] The utility model provides the following description with reference to the accompanying drawings to help fully understand the various embodiments of the utility model as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the utility model.

[0024] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They 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 invention.

[0025] It will be understood that when one element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0026] The embodiment of the utility model provides a forming mold of a special-shaped cover plate with a buckle groove, such as Figure 3-6As shown, the front mold assembly 100 and the rear mold assembly 200 are included. The front mold assembly 100 includes a front fixed plate 110, a movable plate 120, a front mold plate 130, an inclined ejector rod 150 and a front mold core 140. The rear mold assembly 200 includes a rear mold plate 210 and a rear mold core 220 fixed to the rear mold plate 210. The front fixed plate 110 is arranged at the front side of the front mold plate 130 and is fixedly connected to the front mold plate 130. The front mold core 140 is arranged at the rear side of the front mold plate 130 and is fixedly connected to the front mold plate 130. A groove is arranged on the front side of the front mold plate 130. The movable plate 120 is arranged in the groove and can slide relative to the front mold plate 130 in the front-to-back direction, that is, the movable plate 120 is slidably connected to the front mold plate 130 in the front-to-back direction. The front template 130 is provided with a through hole, and the front mold core 140 is provided with an inclined guide hole adapted to the inclined ejector rod 150. The inclined ejector rod 150 is inserted in the through hole and the inclined guide hole. The front end of the inclined ejector rod 150 is slidably connected with the movable plate 120, and the rear end of the inclined ejector rod 150 is provided with a forming block 151 for forming a buckle groove. When the movable plate 120 slides relative to the front template 130, the inclined ejector rod 150 moves in the through hole and the inclined guide hole. Since the inclined guide hole is inclined, the inclined ejector rod 150 will also move obliquely, thereby having a certain displacement in the vertical direction, and this displacement can be used for demolding.

[0027] A plurality of elastic members 121 are arranged between the movable plate 120 and the front fixed plate 110. As the distance between the movable plate 120 and the front fixed plate 110 changes, the elastic members 121 will be compressed or stretched. After the front mold assembly 100 and the rear mold assembly 200 are molded together, the front mold core 140, the rear mold core 220 and the forming block 151 enclose a forming cavity to form a special-shaped cover plate. The forming block 151 is inserted into the special-shaped cover plate to form a snap groove on the special-shaped cover plate. Due to the pressure, the inclined ejector rod 150 will be pushed forward, the distance between the movable plate 120 and the front fixed plate 110 will be reduced, and the elastic member 121 will be compressed to wait for the release of the elastic reset force. When the front mold assembly 100 and the rear mold assembly 200 are opened, the extrusion force on the inclined ejector rod 150 is reduced, and the elastic member 121 applies an elastic reset force to the movable plate 120, so that the inclined ejector rod 150 moves toward the rear side along the inclined guide hole, and the forming block 151 has a certain displacement in the vertical direction, so that the forming block 151 is disengaged from the buckle groove to achieve demolding. Therefore, this embodiment does not use the front mold slider, but uses the inclined ejector rod structure for demolding, which can reduce the area of ​​the clamping line mark on the product surface and improve the product quality.

[0028] In some embodiments, the front mold assembly 100 is provided with a main glue feed channel 101 that runs through itself in the front-to-back direction. The main glue feed channel 101 can run from the front side of the front fixing plate 110 to the rear side of the front mold core 140, and the main glue feed channel 101 extends into the through groove of the special-shaped cover plate.

[0029] like Figure 1As described above, since the through groove 12 of the special-shaped cover plate 10 is located in a relatively central position, the rubber material diffuses from the middle to the surrounding areas, which is conducive to the rubber material filling the molding cavity evenly and quickly, thereby improving the quality of the product and shortening the molding time.

[0030] Furthermore, a through slot 122 is provided in the middle of the movable plate 120, and the front template 130 includes a connecting portion 131, which passes through the slot 122 and abuts against the rear side of the front fixed plate 110; the main glue inlet channel 101 passes through the front fixed plate 110 and the front mold core 140, and passes through the front template 130 from the front side of the connecting portion 131. Since the movable plate 120 needs to slide, if the main glue inlet channel 101 passes through the movable plate 120, there is a problem of ensuring the sealing of the movable plate 120, which increases the requirements for the sealing structure.

[0031] The main glue feeding channel 101 of this embodiment avoids the movable plate 120, which can reduce the requirements for sealing and ensure the sealing of the main glue feeding channel 101. At the same time, the connecting portion 131 can play a role of limiting and guiding the movable plate 120, ensuring that the movable plate 120 slides relative to the front template 130 in the front-to-back direction.

[0032] In some embodiments, a plurality of guide rods 160 extending in the front-to-back direction are fixed to the front template 130, and the movable plate 120 is provided with a plurality of guide holes adapted to the guide rods 160. The guide rods 160 are inserted into the guide holes and can slide along the guide holes. The guide rods 160 guide the movable plate 120 to guide the movable plate 120 to stably slide in the front-to-back direction relative to the front template 130.

[0033] In some embodiments, the elastic member 121 is a spring extending in the front-to-back direction, and the spring is evenly and symmetrically distributed relative to the center of the movable plate 120. In this way, the spring can apply a relatively uniform thrust to the movable plate 120, so that the movable plate 120 can move stably in the front-to-back direction to prevent the movable plate 120 from deflecting.

[0034] In some embodiments, a plurality of guide rail seats 170 are provided on the back side of the movable plate 120, and the guide rail seats 170 are provided with guide rail grooves, the extension direction of the guide rail grooves is parallel to the extension direction of the buckle grooves, and the front end of the inclined ejector rod 150 is slidably matched with the guide rail grooves. When the front mold assembly 100 and the rear mold assembly 200 are opened, the elastic member 121 applies an elastic reset force to the movable plate 120, so that the inclined ejector rod 150 moves toward the rear side along the oblique guide hole, and the inclined ejector rod 150 moves obliquely and slides in the guide rail groove, and the molding block 151 will have a certain displacement in the vertical direction, so that the molding block 151 is disengaged from the buckle groove to achieve demolding.

[0035] In some embodiments, the rear mold assembly 200 further includes an ejector plate 230 located at the rear side of the rear mold plate 210, and the ejector plate 230 is connected to a plurality of ejector pins 240, and the ejector pins 240 pass through the rear mold plate 210 and the rear mold core 220. After the front mold assembly 100 and the rear mold assembly 200 are opened, the ejector plate 230 moves to the front side, and the ejector pins 240 can eject the special-shaped cover plate in the molding cavity to facilitate the removal of the molded product.

[0036] The terms and words used in the above description and claims are not limited to the literal meanings, but are only used by the applicant to enable a clear and consistent understanding of the utility model. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the utility model is provided only for illustration, and not for limiting the utility model as defined by the attached claims and their equivalents.

Claims

1. A forming die for a special-shaped cover plate with a buckle groove, characterized in that: It comprises a front mold assembly and a rear mold assembly, wherein the front mold assembly comprises a front fixed plate, a movable plate, a front mold plate, an inclined ejector rod and a front mold core, and the rear mold assembly comprises a rear mold plate and a rear mold core fixed on the rear mold plate; the front fixed plate and the front mold core are respectively fixed on the front side and the rear side of the front mold plate; a groove is arranged on the front side of the front mold plate, and the movable plate is arranged in the groove and can slide relative to the front mold plate in the front-back direction; The front template is provided with a through hole, the front mold core is provided with an inclined guide hole adapted to the inclined ejector rod, the inclined ejector rod is inserted in the through hole and the inclined guide hole, the front end of the inclined ejector rod is slidably connected with the movable plate, and the rear end of the inclined ejector rod is provided with a forming block for forming a buckle groove; a plurality of elastic members are provided between the movable plate and the front fixed plate; after the mold is closed, the front mold core, the rear mold core and the forming block are combined to form a forming cavity, and the elastic member is compressed; when the mold is opened, the elastic restoring force of the elastic member causes the inclined ejector rod to move rearward along the inclined guide hole to drive the forming block to escape from the buckle groove.

2. The forming mold of the special-shaped cover plate with a buckle groove according to claim 1, characterized in that: The front mold assembly is provided with a main glue inlet channel penetrating through the front mold assembly along the front-back direction, and the main glue inlet channel extends into the through groove of the special-shaped cover plate.

3. The forming die of the special-shaped cover plate with snap groove according to claim 2, characterized in that: A through slot is provided in the middle of the movable plate, and the front template includes a connecting portion, which passes through the slot and abuts against the rear side of the front fixed plate; the main glue inlet channel passes through the front fixed plate and the front mold core, and passes through the front template from the front side of the connecting portion.

4. The forming die of the special-shaped cover plate with a buckle groove according to claim 1, characterized in that: A plurality of guide rods extending in the front-back direction are fixed on the front template, and a plurality of guide holes matching with the guide rods are arranged on the movable plate, and the guide rods are inserted into the guide holes and can slide along the guide holes.

5. The forming die of the special-shaped cover plate with snap groove according to claim 1, characterized in that: The elastic member is a spring extending in the front-rear direction, and the spring is evenly and symmetrically distributed relative to the center of the movable plate.

6. The forming die of the special-shaped cover plate with snap groove according to claim 1, characterized in that: A plurality of guide rail seats are arranged on the back side of the movable plate, and the guide rail seats are provided with guide rail grooves. The extension direction of the guide rail grooves is parallel to the extension direction of the buckle grooves, and the front end of the inclined ejector rod is slidably matched with the guide rail grooves.

7. The forming die of the special-shaped cover plate with snap groove according to claim 1, characterized in that: The rear mold assembly also includes an ejector plate located at the rear side of the rear mold plate, and the ejector plate is connected to a plurality of ejector pins, and the ejector pins pass through the rear mold plate and the rear mold core.

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