CN217622021U

CN217622021U - Toothed belt type internal thread screwing-out forming die

Info

Publication number: CN217622021U
Application number: CN202221022907.4U
Authority: CN
Inventors: 杨海锋
Original assignee: Kunshan Minxu Precision Mould Technology Co ltd
Current assignee: Kunshan Minxu Precision Mould Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-10-21
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a toothed belt type internal thread back-out forming die, including the upper die base, the cope match-plate pattern, the mould benevolence at two acupuncture points of the left and right sides, guide pillar guide pin bushing subassembly, the lower bolster, the die holder, thimble subassembly and the spiral type piece subassembly that is used for shaping internal thread structure, and toothed belt meshing drive assembly, spiral type piece subassembly includes internal thread type piece, rotating gear, stop gear and central axle, toothed belt meshing drive assembly includes the toothed belt, transition gear, the transmission frame, speed regulator and positive reverse motor, this mould adopts the synchronous die sinking of rotating gear that the toothed belt drove two acupuncture points to go out the mould action, driven gear by the tangent meshing transmission of outside drives, and it is rotatory to drive by the motor, totally controllable play mould speed, and the toothed belt probably bears raw materials high temperature influence in mould benevolence inside, reverse at the uniform velocity rotation mode that drives the toothed belt has been designed specially, dispel the heat the toothed belt from inside to outside, keep the toothed belt not heaies up, improve toothed belt life, reduce maintenance time and cost, improve the efficiency of producing the glass holder.

Description

Toothed belt type internal thread screwing-out forming die

Technical Field

The utility model relates to the technical field of mold, concretely relates to toothed belt type internal thread back-out forming die.

Background

I department designs the production before has a thermos cup product, be provided with the glass holder in its rim of a cup outer lane, refer to figure 2 of description attached drawing, the glass holder inner wall is provided with the helicitic texture who screws with transparent cup upper end mouth spiro union, when this glass holder of production preparation, in order to guarantee the service quality of glass holder, should guarantee complete integrative shaping effect when shaping helicitic texture, abandon the mode that the helicitic texture falls into both ends concatenation shaping with the traditional use, for this reason, we are the forming die of the internal thread structural design integral type of glass holder product before this, in order to promote the service quality of glass holder product, structural strength.

Referring to fig. 1, 3 and 5 of the attached drawings of the specification, i previously designed a mold structure that a hydraulic cylinder is used for pushing a rack, then an internal thread mold block is driven to be ejected from a mold in a manner that the rack is meshed with a gear, and the mold block in two cup sleeves of one mold and two cavities are driven to be ejected in a spiral manner after speed regulation by using the matching of the rack and a coaxial gear, so that a complete thread structure is formed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose: in view of the problems that the rack and gear meshing transmission adopted in the existing mold design often cracks to cause the suspension of injection molding production, the racks of the mold are frequently maintained and replaced, and the injection molding production efficiency of the mold is seriously restricted, a toothed belt type internal thread screw-out forming mold is designed.

The technical scheme adopted for solving the problems is as follows:

a toothed belt type internal thread screwing-out forming die comprises an upper die base, an upper die plate, die cores of a left acupuncture point and a right acupuncture point, a guide pillar and guide sleeve assembly, a lower die plate, a lower die base, an ejector pin assembly, a spiral block assembly for forming an internal thread structure, and a toothed belt meshing transmission assembly.

An injection port is arranged at the center of the upper die base, the injection port is fixedly connected with the upper die plate, the lower end of the injection port is communicated with a cavity of a cup sleeve consisting of two die cores and a spiral block component through a branch pouring gate,

the spiral type block assembly comprises an internal thread type block, a rotary gear, a limit gear and a central shaft, the central shaft is in fit with the internal thread type block in a penetrating way and is sequentially matched and fixedly connected with the rotary gear and a shaft hole of the limit gear, a thread cavity for forming a threaded structure on the inner wall of the cup sleeve is arranged on the periphery of the internal thread type block, the rotary gear is matched with a toothed belt meshing transmission assembly to obtain rotary power so as to drive the internal thread type block to rotate and assist the cup sleeve product to be discharged from a mold, the rotary gear comprises an inner ring and an outer ring, the inner ring is matched and fixedly connected with a key groove of the central shaft, teeth are arranged on the periphery of the outer ring,

the toothed belt meshing transmission assembly comprises a toothed belt, a transition gear, a transmission frame, a speed regulator and a forward and reverse rotating motor.

Furthermore, the limiting gear is meshed with limiting teeth arranged at the front end of a limiting block arranged on the lower template for limiting so as to keep the internal thread type block positioned stably.

Further, the cingulum is with two rotary gear and the tangent meshing transmission of transition gear, the transition gear links firmly on the driving frame, the driving frame links firmly in mould one side, positive reverse motor links firmly on the driving frame to by the rotational speed of speed regulator adjustment motor spindle output, the output shaft of speed regulator has linked firmly the driving gear, the driving gear is erect between two adjacent transition gears, drives the transition gear synchronous implementation forward or the reverse rotation of both sides.

Furthermore, cooling pipelines are further arranged in the upper template and the lower template so as to quickly cool the injection molding raw materials after the injection molding raw materials are molded.

Furthermore, the guide pillar and guide sleeve assemblies are arranged at four corners of the lower die holder and are used for positioning the lower die holder, the lower die plate, the upper die plate and the upper die holder in a penetrating and sleeving matching manner.

Furthermore, the limiting block is driven by the pushing cylinder to slide in a telescopic manner along the radial direction of the central shaft.

Furthermore, a one-way elastic barb is arranged between the inner ring and the outer ring of the rotary gear to control the outer ring to rotate leftwards relative to the inner ring and cannot rotate rightwards.

The beneficial effects of the utility model are that:

this forming die is revolved out to cingulum formula internal thread adopts the cingulum to drive the synchronous die sinking demolding action of rotary gear in two caves, drive by the driven gear of outside tangent meshing transmission, and it is rotatory to drive by the motor, totally controllable demolding speed, and in view of the cingulum probably bears the raw materials high temperature influence in mould benevolence inside, the reverse mode that drives the cingulum at the uniform velocity of having designed specially, dispel the heat with the cingulum from inside to outside, keep the cingulum not to heat up, improve the cingulum life, reduce mould maintenance time and cost of maintenance, improve the efficiency that the mould moulded plastics production glass cover.

Drawings

FIG. 1 is a schematic structural diagram of a conventional cup holder mold;

FIG. 2 is a schematic structural view of a conventional cup holder product;

fig. 3 is a schematic structural view of a hydraulic cylinder pushing rack of a conventional cup holder mold;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a top view of a hydraulic cylinder pushing rack of a conventional cup holder mold;

FIG. 6 is a top view of the toothed belt type internal thread back-out molding die according to the present embodiment;

FIG. 7 is a partial enlarged view of the portion B in FIG. 6;

wherein, 1-a first mold core, 2-a second mold core, 3-a first rotating gear, 4-a second rotating gear, 5-a hydraulic cylinder, 6-a rack, 7-a gearwheel of a coaxial gear, 8-a pinion of the coaxial gear, 9-a limiting gear, 10-limit teeth, 11-limit blocks, 12-cup sleeves, 13-thread structures, 14-toothed belts, 15-transmission frames, 16-first transition gears, 17-second transition gears, 18-positive and negative rotation motors and 19-one-way elastic barbs.

Detailed Description

The technical solution of the present invention will be described clearly and completely by way of example with reference to the accompanying drawings.

Referring to fig. 6-7, the present embodiment provides a toothed belt 14 type internal thread back-out forming mold, which includes an upper mold base, an upper mold plate, a mold core for two acupuncture points on the left and right, a guide post and guide sleeve assembly, a lower mold plate, a lower mold base, a thimble assembly, a spiral block assembly for forming an internal thread structure 13, and a toothed belt meshing transmission assembly, wherein the guide post and guide sleeve assembly is disposed at four corners of the lower mold base, and is used for guiding and positioning the lower mold base, the lower mold plate, the upper mold plate, and the upper mold base.

An injection molding opening is formed in the center of the upper die base, the injection molding opening is fixedly connected with the upper die plate, and the lower end of the injection molding opening is communicated with a cavity of a cup sleeve 12 formed by the two die cores and the spiral block assemblies through a branch runner.

Referring to fig. 1 and 3, the spiral block assembly includes an internal thread block (not marked in the figure), a rotary gear, a limit gear 9 and a central shaft (not marked in the figure), the central shaft is in fit with the internal thread block and is fixedly connected with the rotary gear and a shaft hole of the limit gear 9 in sequence, a thread cavity for forming a thread structure 13 on the inner wall of the cup 12 is arranged on the periphery of the internal thread block, the rotary gear is matched with a toothed belt meshing transmission assembly to obtain rotary power so as to drive the internal thread block to rotate and assist in demolding of the cup 12 product, the rotary gear includes an inner ring and an outer ring, the inner ring is fixedly connected with a key groove of the central shaft in a fit manner, teeth are arranged on the periphery of the outer ring, and the limit gear 9 is meshed with limit teeth 10 arranged at the front end of a limit block 11 arranged on the lower template for limiting so as to keep the internal thread block positioned stably and locate the initial position of the thread structure in the cavity.

Referring to fig. 6, the tooth belt meshing transmission assembly includes tooth belt 14, transition gear, gear frame 15, speed regulator and positive reverse motor 18, tooth belt 14 and two tangent meshing transmission of rotary gear and transition gear, the transition gear links firmly on gear frame 15, gear frame 15 links firmly in mould one side, positive reverse motor 18 links firmly on gear frame 15 to by the rotational speed of speed regulator adjustment motor spindle output, the output shaft of speed regulator has linked firmly the driving gear, the driving gear is established between two adjacent transition gears, drives the transition gear synchronous implementation forward or reverse rotation of both sides, and then drives rotary gear forward or reverse rotation, realizes levogyration or dextrorotation action respectively, wherein: when the rotary gear rotates leftwards, the mold core is matched to open the mold and remove the mold, and the intact thread structure of the product is formed and removed from the mold; when the rotary gear rotates rightwards, the toothed belt can be rotated reversely in consideration of the temperature rise of the mold core when raw materials are injected, the heat accumulated by the toothed belt is cooled and dissipated, or the toothed belt is externally cooled and dissipated.

The further embodiment is that cooling pipelines are arranged in the upper template and the lower template so as to quickly cool the injection molding raw materials after the injection molding raw materials are molded.

The further embodiment is that the limiting block 11 is driven by a pushing cylinder (not shown in the figure) to slide along the radial direction of the central shaft in a telescopic manner, so that the limiting gear can be accurately meshed, positioned and limited by the limiting block.

The further embodiment is that a one-way elastic barb 19 is further arranged between the inner ring and the outer ring of the rotating gear, so that the rotating gear can rotate in the right direction and idle, and the technical principle of the existing single-speed flywheel of the bicycle is referred to control the outer ring to only rotate in the left direction but not rotate in the right direction relative to the inner ring.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes, modifications, substitutions and alterations can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a moulding die is screwed out to cingulum formula internal thread, includes mould benevolence, guide pillar guide pin bushing subassembly, lower bolster, die holder, the thimble subassembly of upper die base, cope match-plate pattern, two left and right sides acupuncture points, its characterized in that: also comprises a spiral block component for forming an internal thread structure and a toothed belt meshing transmission component,

the spiral block assembly comprises an internal thread block, a rotating gear, a limiting gear and a central shaft, the central shaft is in fit with the internal thread block in a penetrating way and is fixedly connected with the rotating gear and a shaft hole of the limiting gear in sequence, a thread cavity for forming a threaded structure on the inner wall of the cup sleeve is arranged on the periphery of the internal thread block, the rotating gear is matched with a toothed belt meshing transmission assembly to obtain rotating power so as to drive the internal thread block to rotate, the cup sleeve product is assisted to be demoulded, the rotating gear comprises an inner ring and an outer ring, the inner ring is fixedly connected with a key groove of the central shaft in a matching way, teeth are arranged on the periphery of the outer ring,

2. The toothed belt type internal thread back-out molding die according to claim 1, wherein: the limiting gear is meshed with limiting teeth arranged at the front end of a limiting block arranged on the lower template for limiting.

3. The toothed belt type internal thread back-out forming die according to claim 1, wherein: the tooth belt is in tangent meshing transmission with two rotary gears and a transition gear, the transition gear is fixedly connected to a transmission frame, the transmission frame is fixedly connected to one side of a mold, a forward and reverse rotating motor is fixedly connected to the transmission frame, the rotating speed of the main shaft of the motor is adjusted by a speed adjuster, an output shaft of the speed adjuster is fixedly connected to a driving gear, the driving gear is arranged between two adjacent transition gears in a supporting mode, and the transition gears on two sides are driven to synchronously implement forward rotation or reverse rotation.

4. The toothed belt type internal thread back-out molding die according to claim 1, wherein: and cooling pipelines are also arranged in the upper template and the lower template.

5. The toothed belt type internal thread back-out molding die according to claim 1, wherein: the guide post and guide sleeve assemblies are arranged at four corners of the lower die base and are used for positioning the lower die base, the lower die plate, the upper die plate and the upper die base in a penetrating and sleeving matching manner.

6. The toothed belt type internal thread back-out forming die according to claim 2, wherein: the limiting block is driven by the pushing cylinder to slide along the radial direction of the central shaft in a telescopic mode.

7. The toothed belt type internal thread back-out molding die according to claim 1, wherein: and a one-way elastic barb is further arranged between the inner ring and the outer ring of the rotating gear to control the outer ring to rotate leftwards and not rotate rightwards relative to the inner ring.