Core-pulling mold for threaded product

Abstract

The utility model belongs to the technical field of dies, and particularly relates to a core-pulling die for a threaded product, which comprises a fixed die, a movable die, two jigs and a core-pulling mechanism, the fixed die and the movable die form a containing cavity, the two jigs are arranged in the containing cavity and form a cavity, a sliding ejector rod is arranged on the side edge of each jig, and the core-pulling mechanism comprises a driving assembly and a rotating core rod. The end, provided with the forming thread, of the rotary core rod extends into the cavity. The driving assembly is arranged on the outer side of the fixed mold and connected with the rotary core rod. The movable mold is provided with a connecting seat and a mold rod, the mold rod penetrates through the connecting seat and extends into the cavity to abut against the rotary core rod, one end, extending into the cavity, of the mold rod is provided with a mold head for forming various grooves, and the two jigs, the rotary core rod and the mold rod form a product forming cavity; the side, away from the fixed mold, of the movable mold is provided with an ejector plate, the ejector plate is provided with a reset rod and an ejector, the reset rod penetrates through the movable mold to abut against the fixed mold, the reset rod is sleeved with a spring, one end of the ejector is connected with the ejector plate, and the other end of the ejector penetrates through the movable mold to be connected with the connecting base. And complete demolding of the product can be realized, and the applicability of the mold is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field especially relates to a core -pulling mould of threaded product. BACKGROUND

[0002] The injection mold is a kind of mold for producing plastic products. It is mainly by injecting the molten plastic material into the cavity of the mold, by pressurizing and cooling to make the plastic solidification, to form the product with specific shape. At present, in some forming products, it is needed to set internal thread on the product to facilitate use, and this kind of product is generally formed internal thread by core-pulling structure and carries out core-pulling.

[0003] For example, the Chinese patent document with publication number CN220946547U discloses a bottle cap injection molding mold, including workbench, four groups of circular grooves are set up in the upper and lower parts of the workbench, the bottom of the workbench is provided with base, four groups of fixed columns are fixedly installed on the top of the base, the top of the fixed column is inserted into the circular groove, the upper position of the outer part of the fixed column is provided with a threaded groove, the outer part of the fixed column is provided with a movable assembly, the top of the movable assembly is matched with the size of the circular groove, the bottom position of the movable assembly is provided with a telescopic rod, and the bottom of the movable assembly is fixedly connected with the output rod of the cylinder. Set movable assembly cooperates with fixed column, take down cover plate, start cylinder, cylinder pushes movable assembly and moves upward, so that movable assembly top pushes out bottle cap, and easily demoulds bottle cap.

[0004] In the technical scheme of the above patent document, the core-pulling structure formed by the cylinder, movable assembly and fixed column can quickly form and demould the cap with internal thread. When the product has internal thread and various grooves at the same time, this kind of core-pulling structure cannot directly realize the core-pulling of the product, and the applicability is poor. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a core-pulling mold for threaded products, solving the problem that the existing core-pulling structure cannot be applied to demoulding such products with internal thread and various grooves at the same time.

[0006] In order to achieve the above object, the utility model discloses a kind of core-pulling mould of threaded product, including fixed mould, movable mould, two fixtures and core-pulling mechanism, the fixed mould and movable mould form containing cavity, two The fixture is located in the containing cavity and forms cavity, the fixture side is equipped with sliding ejector pin, the core-pulling mechanism includes driving assembly and rotating core rod, the rotating core rod passes through the fixed mould and is equipped with the end of forming thread and extends into the cavity, the driving assembly is located in the outside of the fixed mould, and is connected with the rotating core rod, drives the rotating core rod to rotate away or extend into the cavity;The movable mould is also equipped with connecting seat and mould bar, the connecting seat is installed between the two fixtures and movable mould, the mould bar passes through the connecting seat and extends into the cavity and abuts against the rotating core rod when moulding, the mould bar end that extends into the cavity is equipped with the die head of forming various grooves, two The fixture, rotating core rod and mould bar jointly constitute product forming cavity;The side of movable mould away from the fixed mould is also equipped with ejector pin plate, the ejector pin plate is equipped with reset lever and ejector pin, the reset lever passes through the movable mould and abuts against the fixed mould, spring is sleeved on the reset lever, one end of the spring is located in the movable mould, one end is connected with the ejector pin plate, one end of the ejector pin is connected with the ejector pin plate, and the other end passes through the movable mould and is connected with the connecting seat.

[0007] Further, the mould bar and the connecting seat are taper-fitted connection.

[0008] Further, the product forming cavity has four, is evenly arranged at the intersection of two fixtures, the driving assembly is connected with four rotating core rods, and the connecting seat is connected with four mould bars.

[0009] Further, the side of fixture away from the product forming cavity is also equipped with sliding block, one end of the sliding ejector pin is located on the sliding block, the side of movable mould close to the fixed mould is also equipped with guide rail, and the sliding block is slidably connected with the guide rail.

[0010] Further, the side of fixed mould close to the sliding block is equipped with inclined rod, and inclined hole is arranged in the sliding block, and one end of the inclined rod slidably passes through the inclined hole.

[0011] Further, it further includes mould seat, the ejector pin plate is located in the inside of the mould seat, the movable mould is located at the top side of the mould seat, four guide sleeves are arranged on the mould seat, the fixed mould is equipped with corresponding four guide columns, and the guide column slidably passes through the guide sleeve.

[0012] Further, the rotating core rod is equipped with first gear, the first gear is engaged with second gear, and the second gear is rotatably connected with the fixed mould;The driving assembly includes driving piece and rack, the rack is engaged with the second gear and is located at the side of the second gear away from the first gear, and the driving piece is connected with the rack and is used to drive the rack to move on the fixed mould.

[0013] Further, the fixed mold is provided with a cover plate away from one side of the movable mold, the cover plate and the fixed mold form a through groove, the rack is arranged in the through groove, the cover plate is provided with a threaded sleeve, and one end of the rotating core rod away from the product forming cavity is provided with a screw rod matched with the threaded sleeve in a threaded mode.

[0014] Further, the fixed mold is provided with a bearing, and the rotating core rod is rotationally connected to the bearing.

[0015] The core-pulling mold with threaded products provided by the embodiment of the utility model has at least the following technical effects:

[0016] When the product is formed, the driving assembly drives the rotating core rod to rotate away from the product forming cavity, the rotating core rod and the threaded end of the formed product are separated and demolded, the ejector pin plate moves towards the direction of the fixed mold, the reset rod pushes the fixed mold to move, the spring is compressed, the end of the ejector pin abuts against the connecting seat, then the reset force of the spring drives the ejector pin plate to reset, the fixed mold and the movable mold are separated, and the connecting seat drives the mold rod and the slotted end of the formed product to separate and demold; and then the sliding ejector rod pushes the two jigs to move in opposite directions, the two jigs are separated, and the complete demolding of the formed product is realized, and the applicability of the mold is improved. ACCURATE DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0018] Fig. 1 The utility model provides a perspective view of the core-pulling mold with threaded products.

[0019] Fig. 2 The utility model provides a structure diagram of the core-pulling mold with threaded products, which omits the fixed mold and the cover plate.

[0020] Fig. 3 The utility model provides a partial structure diagram of the core-pulling mold with threaded products, which omits the fixed mold and the movable mold.

[0021] Fig. 4 The utility model provides a partial structure diagram of the core-pulling mold with threaded products, which includes a single jig, a rotating core rod, a mold rod and a connecting seat.

[0022] In the figure, 100, fixed mold, 110, inclined rod, 120, guide column, 130, cover plate, 131, threaded sleeve, 132, through slot, 140, bearing;

[0023] 200, movable mold, 210, connecting seat, 220, mold rod, 230, ejector plate, 240, reset rod, 241, spring, 250, ejector pin, 260, guide rail, 270, mold base, 271, guide sleeve;

[0024] 300, jig, 310, product forming cavity, 320, sliding block;

[0025] 400, core pulling mechanism, 410, driving assembly, 411, driving piece, 412, rack, 413, second gear, 420, rotating core rod, 421, first gear, 422, screw rod. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0027] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0028] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] In the embodiments of the utility model, unless another explicit provision and limitation, the terms "mount", "connect", "joint", "fix" and other terms should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to specific circumstances.

[0030] In one embodiment of the core-pulling mold of the threaded product of the utility model, please refer to Figs. 1-4 The core-pulling mold of the threaded product includes fixed mold 100, movable mold 200, two jigs 300 and core-pulling mechanism 400, fixed mold 100 and movable mold 200 form containing cavity, two jigs 300 are arranged in containing cavity and form cavity, and the side of jig 300 is provided with sliding ejector rod (not marked in the figure), core-pulling mechanism 400 includes driving assembly 410 and rotating core rod 420, rotating core rod 420 passes through fixed mold 100 and the end provided with forming thread extends into cavity, driving assembly 410 is arranged outside fixed mold 100 and is connected with rotating core rod 420, and driving rotating core rod 420 rotates away from or extends into cavity. Movable mold 200 is further provided with connecting seat 210 and mold rod 220, connecting seat 210 is installed between two jigs 300 and movable mold 200, mold rod 220 passes through connecting seat 210 and extends into cavity and abuts against rotating core rod 420 when clamping, and the end of mold rod 220 extending into cavity is provided with mold head forming various grooves, and two jigs 300, rotating core rod 420 and mold rod 220 jointly form product forming cavity 310. Movable mold 200 is further provided with ejector plate 230 on the side away from fixed mold 100, and ejector plate 230 is provided with reset lever 240 and ejector pin 250, reset lever 240 passes through movable mold 200 and abuts against fixed mold 100, spring 241 is sleeved on reset lever 240, one end of spring 241 is arranged in movable mold 200, and the other end is connected with ejector plate 230, one end of ejector pin 250 is connected with ejector plate 230, and the other end passes through movable mold 200 and is connected with connecting seat 210.

[0031] Specifically, since the two jigs 300, the rotating core rod 420 and the mold rod 220 jointly constitute the product forming cavity 310, when the product is formed, the driving assembly 410 drives the rotating core rod 420 to rotate away from the product forming cavity 310, realizing the separation of the rotating core rod 420 and the threaded end of the formed product. The ejector sleeve 230 is moved towards the fixed mold 100, so that the reset rod 240 pushes the fixed mold 100 to move, the spring 241 is compressed, the end of the ejector pin 250 abuts against the connecting seat 210, then the restoring force of the spring 241 drives the ejector sleeve 230 to reset, realizing the separation of the fixed mold 100 and the movable mold 200, and the connecting seat 210 drives the mold rod 220 to separate from the slotted end of the formed product. Then the sliding ejector rod 220 pushes the two jigs 300 to move in opposite directions respectively, so that the two jigs are separated, thereby realizing the complete demolding of the formed product and improving the applicability of the mold.

[0032] Further, the mold rod 220 is connected with the connecting seat 210 in a taper fit. Specifically, the taper connection tightly connects the connecting seat 210 and the mold rod 220, maintains the sealing property, and prevents excess flash from being generated when the connecting seat 210 drives the mold rod 220 to demold.

[0033] Further, the product forming cavity 310 has four, which are evenly arranged at the intersection of the two jigs 300, and the driving assembly 410 is connected with four rotating core rods 420, and the connecting seat 210 is connected with four mold rods 220. Specifically, four products are injection molded at one time, improving the production efficiency.

[0034] Further, the side of the jig 300 away from the product forming cavity 310 is also provided with a sliding block 320, one end of the sliding ejector rod is arranged on the sliding block 320, and the side of the movable mold 200 close to the fixed mold 100 is also provided with a guide rail 260, and the sliding block 320 and the guide rail 260 are in sliding connection. Specifically, by pushing the guide block 330 to move away from the product forming cavity 320 along the guide rail 260, the sliding ejector rod and the jig 300 are driven to move together, realizing the separation of the two jigs.

[0035] Further, the side of the fixed mold 100 close to the sliding block 320 is provided with an inclined rod 110, and the sliding block 320 is provided with an inclined hole, and one end of the inclined rod 110 slides through the inclined hole. Specifically, when the mold is closed, the inclined rod 110 limits the position of the sliding block 320, thereby ensuring the cavity precision of the two jigs 300.

[0036] Further, the mold base 270 is further provided, the ejector plate 230 is arranged in the inside of the mold base 270, the movable mold 200 is arranged on the top side of the mold base 270, four guide sleeves 271 are arranged on the mold base 270, and the fixed mold 100 is provided with the corresponding four guide columns 120, and the guide column 120 is slidably arranged through the guide sleeve 271. Specifically, when the ejector plate 230 drives the reset rod 240 and the ejector pin 250 to move, because the guide column 120 is slidably arranged through the guide sleeve 271, the moving direction of the reset rod 240 and the ejector pin 250 is guided, so that the reset rod 240 and the ejector pin 250 are prevented from deviating during reset, and the demolding is affected.

[0037] Further, the rotating core rod 420 is provided with a first gear 421, the first gear 421 is meshed with the second gear 413, and the second gear 413 is rotatably connected to the fixed mold 100. The driving assembly 410 comprises a driving member 411 and a rack 412, the rack 412 is meshed with the second gear 413 and arranged on the side of the second gear 413 away from the first gear 421, and the driving member 411 is connected to the rack 412 and used for driving the rack 412 to move on the fixed mold 100. Specifically, the driving member 411 drives the rack 412 to move, drives the second gear 413 to rotate, drives the first gear 421 meshed with the second gear 413 and the rotating core rod 420 to rotate along the axis of the rotating core rod 420, and realizes that the rotating core rod 420 moves away from the product forming cavity 310.

[0038] Further, the side of the fixed mold 100 away from the movable mold 200 is further provided with a cover plate 130, the cover plate 130 cooperates with the fixed mold 100 to form a through groove 132, the rack 412 is arranged in the through groove 132, the cover plate 130 is provided with a threaded sleeve 131, and one end of the rotating core rod 420 away from the product forming cavity 310 is provided with a screw rod 422 threadedly matched with the threaded sleeve 131. Specifically, the cover plate 130 is provided with the threaded sleeve 131, the screw rod 422 of the rotating core rod 420 is threadedly connected with the threaded sleeve 131, the driving assembly 410 drives the rotating core rod 420 to move up and down along the axis, and the precision of the rotating core rod 420 is ensured. The through groove 132 protects the rack 412 from being directly exposed to the outside, and affects the meshing precision of the rack 412 and the second gear 413.

[0039] Further, the fixed mold 100 is provided with a bearing 140, and the rotating core rod 420 is rotatably connected to the bearing 140. Specifically, when the driving assembly 410 drives the rotating core rod 420 to rotate up and down, the rotating core rod 420 moves up and down in the fixed mold 100 through the bearing 140, the frictional resistance is reduced, and the movement process of the rotating core rod 420 is affected.

[0040] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A core-drawing mold for a threaded product, characterized by: The utility model discloses a mould, including fixed mould, movable mould, two fixtures and core-pulling mechanism, the fixed mould and movable mould form the accommodation cavity, two fixtures are located in the accommodation cavity and form the cavity, and the fixture side is equipped with sliding ejector pin, and the core-pulling mechanism includes drive assembly and rotating core rod, and the rotating core rod passes through the fixed mould and is equipped with the end of forming thread and goes into the cavity, and the drive assembly is equipped with the outside of fixed mould, and is connected rotating core rod, drives rotating core rod to rotate and goes into the cavity away or, and the movable mould is equipped with connecting seat and mould bar still, and the connecting seat is installed between two fixtures and movable mould, and the mould bar passes through connecting seat and goes into the cavity and is in the mould and is in contact with rotating core rod, and the mould bar goes into the cavity one end and is equipped with the mould head of forming various grooves, and two fixtures, rotating core rod and mould bar jointly constitute product forming cavity, and the movable mould is equipped with ejector pin plate still on the side away from the fixed mould, and the ejector pin plate is equipped with reset lever and ejector pin, and the reset lever passes through movable mould and is in contact with fixed mould, and the reset lever is equipped with spring on, and one end of spring is equipped with in movable mould, and one end is connected ejector pin plate, and one end of ejector pin is connected ejector pin plate, and the other end passes through movable mould and is connected connecting seat.

2. The core-drawing mold for a threaded product according to claim 1, characterized by: The mould bar is connected with the taper of the connecting seat.

3. The core-drawing mold for a threaded product according to claim 2, characterized by: The product forming cavity has four, is evenly equipped with in two fixtures intersection, and the drive assembly is connected with four rotating core rods, and the connecting seat is connected with four mould bars.

4. The core-drawing mold for a threaded product according to claim 1, characterized by: The fixture is equipped with a sliding block away from the product forming cavity, and the sliding ejector pin is arranged on the sliding block.

5. A core-drawing mold for a threaded product according to claim 4, characterized in that: The movable die is equipped with a guide rail on the side close to the fixed die, and the sliding block is slidably connected with the guide rail.

6. The core-drawing mold for a threaded product according to claim 1, characterized by: The fixed die is equipped with a slope on the side close to the sliding block, and the sliding block is equipped with an inclined hole.

7. The core-drawing mold for a threaded product according to claim 1, characterized by: The ejector pin plate is arranged in the inside of the die seat, the movable die is arranged on the top side of the die seat, the die seat is equipped with four guide sleeves, the fixed die is equipped with four guide columns, and the guide columns are slidably arranged through the guide sleeves.

8. The core-drawing mold for a threaded product according to claim 7, characterized by: The rotating core rod is equipped with a first gear, the first gear is engaged with a second gear, and the second gear is rotatably connected with the fixed die.

9. The core-drawing mold for a threaded product according to claim 8, characterized by: The fixed die is equipped with a cover plate on the side away from the movable die, the cover plate is matched with the fixed die to form a through groove, the rack is arranged in the through groove, the cover plate is equipped with a threaded sleeve, and the rotating core rod is equipped with a screw away from the product forming cavity. The fixed die is equipped with a bearing, and the rotating core rod is rotatably connected with the bearing.

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