WO2018218394A1 - High-performance electric injection molding device - Google Patents
High-performance electric injection molding device Download PDFInfo
- Publication number
- WO2018218394A1 WO2018218394A1 PCT/CN2017/086247 CN2017086247W WO2018218394A1 WO 2018218394 A1 WO2018218394 A1 WO 2018218394A1 CN 2017086247 W CN2017086247 W CN 2017086247W WO 2018218394 A1 WO2018218394 A1 WO 2018218394A1
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- WIPO (PCT)
- Prior art keywords
- screw
- injection molding
- drive shaft
- injection
- ball
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
Definitions
- the invention belongs to the field of plastics and relates to an electric injection molding mechanism used in an injection molding machine or the like.
- the injection molding machine mainly includes motors, reduction transmission systems, screws, screw nut pairs and other components.
- the screw is an important part of the injection molding machine, used for conveying, compacting, melting, stirring and pressing the plastic.
- the action is accomplished by the rotation of the screw within the barrel and the movement in the axial direction. When the screw rotates, the plastic will rub against each other on the inner wall of the barrel, the bottom surface of the screw groove, the screw advance surface, and between the plastic and the plastic.
- the injection time is crucial for the shaping of the plastic, and it is necessary to ensure that the injection system has sufficient response speed (ie screw acceleration) to ensure that the melt can be injected into the cavity of the mold in a short time.
- the amount of components that need to be moved during the injection process is large and complicated (for example, including a screw, a servo motor, a pre-plasticized transmission system, a bearing set, an injection nut, and an injection slide seat).
- Newton's second law when the injection pressure is constant, if the total mass of the injection motion system is large, the acceleration obtained by the screw will decrease, that is, the injection response speed is greatly reduced, and the required speed cannot be achieved in a very short time.
- the injection speed has a great influence on the working conditions required for high-speed injection.
- the linear guide of the moving parts in the conventional injection system is realized by sliding friction, and the contact surface wears quickly, the heat is high, the lubrication requirement is high, the lubrication phenomenon occurs when the lubrication is insufficient, and the power consumed by the drive motor is also increased. .
- the present invention provides an electric injection molding system and an injection molding machine including the same, which requires less moving parts than conventional conventional injection molding machines when performing an injection operation.
- the inertia is greatly reduced, and the effect speed and injection accuracy of the injection system are greatly improved.
- an injection molding system for an injection molding machine comprising:
- the screw drive shaft includes a ball spline and a ball nut, the screw is mounted on the screw drive shaft;
- the ball screw being mounted in cooperation with the ball nut of the screw drive shaft, the ball screw moving the screw drive shaft and the screw back and forth in an axial direction;
- An axial guiding mechanism is mounted with the ball spline of the screw drive shaft.
- the screw and the screw drive shaft are axially moved back and forth, and the ball screw and the axial guiding mechanism do not move axially back and forth.
- the screw drive shaft is provided in one piece.
- the injection molding system further includes an elastic energy storage device and a retaining ring, wherein the retaining ring is fitted to one end of the screw drive shaft of the screw, so that the movement state of the retaining ring and the screw Similarly, one end of the elastic energy storage device is mounted on the retaining ring, and the other end is fixed.
- the elastic energy storage mechanism and the screw drive shaft are coaxially disposed.
- the inner cavity of the axial guiding mechanism and the ball spline of the screw drive shaft are mounted by ball cooperation, so that the axial guiding mechanism guides the screw drive shaft to move axially forward and backward, and also A limit of the circumferential direction of the screw drive shaft is provided.
- an injection molding machine comprising the injection molding system and the mold clamping system according to the first aspect of the invention.
- the screw drive shaft comprises a ball spline and a ball nut, and is integrated, and realizes the dual functions of the ball spline and the ball nut, and provides a guiding effect while greatly reducing the guide.
- the coefficient of friction during the operation of the injection molding system increases the injection acceleration.
- the injection screw of the injection molding system of the invention is directly assembled with the screw drive shaft, and no additional installation process is required, so that the injection screw and the screw drive shaft can maintain synchronous movement, and the screw drive shaft is also designed for integral processing, and the injection molding system The stability is greatly improved.
- the injection molding system and the injection molding machine provided by the invention are provided with an elastic energy storage device, and are connected with the tail of the injection screw, can perform back pressure compensation during the pre-plasticization process, and compress energy storage, and release elastic energy storage during the injection process.
- the device can directly and accurately apply the thrust to the screw to effectively increase the injection pressure and speed; and the elastic energy storage mechanism and the screw drive shaft are coaxially arranged to improve the stability of the injection molding system.
- the back pressure pressure compensation can be performed in the pre-plasticizing process, and the compression energy storage can effectively reduce the rated power of the injection driving motor and reduce the cost of the injection system.
- Figure 1 is a schematic illustration of the principle of a first embodiment of an injection molding system provided by the present invention.
- FIG. 2 is a top plan view showing the structure of a first embodiment of the injection molding system provided by the present invention.
- FIG. 3 is a top plan view of the drive/drive process of the first embodiment of the injection molding system provided by the present invention.
- Screw drive shaft The screw drive shaft of the present invention is integrally arranged, which refers to the ball spline and the ball nut as a whole, that is, the outer surface of the same hollow shaft is processed into a spline, and the inner cavity is processed into a ball screw.
- the mother as the screw drive shaft, is axially guided by the ball nut of the inner ring and the ball screw (the screw drive shaft and the ball screw are not integrally processed) while the shaft and the drive are connected, This ensures that the direction of the driving force of the ball screw always coincides with the axis of the entire injection portion (including the screw + screw drive shaft + ball screw).
- Axial guiding mechanism It is matched with the ball spline part of the screw drive shaft, which is axially constrained, and provides axial and forward movement guidance.
- the object of the present invention is to provide a high-performance injection molding system and an injection molding machine equipped with the injection molding system, which can reduce the load of the injection molding system during operation, improve the response speed and accuracy of the injection molding system, and reduce the driving power of the injection molding system and improve the efficiency. cut costs.
- the injection molding system provided by the invention comprises:
- Screw 1 barrel 2, fixed frame 3, retaining ring 4, spring 5, pre-plastic motor 6, first pre-plastic gear 7, second pre-plastic gear 8, first bearing set 9, screw drive shaft 10, shaft
- forward of the moving member means moving toward the nozzle 17
- reverse means moving in a direction away from the nozzle 17.
- the "rear end” and “rear side” are ends that extend away from the direction of the screw.
- the "moving back and forth in the axial direction” and “the axial movement in the front and rear direction” mean moving back and forth with respect to the fixed frame.
- a preferred pre-molding drive mechanism comprises a pre-plastic motor 6, a first pre-plastic gear 7 and a second pre-plastic gear 8, it being noted that one skilled in the art may take other
- An alternative drive to accomplish the function of the pre-drive drive mechanism includes, but is not limited to, a hollow shaft motor drive or the like well known to those skilled in the art.
- a preferred driving mechanism during the injection process includes an injection motor 13, a first injection gear 14, and a second injection gear 15. It should be noted that those skilled in the art may adopt other alternative drives.
- the manner in which the function of the injection drive mechanism is accomplished includes, but is not limited to, the use of motor direct drive, and the like, which is well known to those skilled in the art.
- the injection molding system includes a screw drive shaft and an axial guiding mechanism that are fitted and mounted, and is axially constrained while providing axial forward and backward movement guidance.
- the person can use other alternative structures to achieve the function of transmitting the rotation of the drive mechanism to the screw and moving the screw axially.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- Fig. 1 is a schematic view showing the principle of an injection molding system of a first embodiment of the present invention.
- Fig. 2 is a plan view showing the injection molding system of the first embodiment in a cross section.
- the barrel is 2 and the fixed frame is 3, and the fixed frame 3 is used to support the injection molding system.
- the barrel 2 is fixedly coupled to the front end of the fixed frame 3 by bolts, and a nozzle 17 is provided at the front end of the barrel 2, and a mold clamping system (not shown) may be disposed in front of the nozzle 17.
- the screw 1 functions as a push-out member, and the main body of the screw 1 is fitted with the inner cavity of the cylinder 2, and the screw 1 can be moved forward and backward or along the axis of the cylinder 2.
- the trailing end of the screw 1 is fixed to the front end of the screw drive shaft 10 to ensure that the movement state of the screw 1 is the same as that of the screw drive shaft 10.
- the screw drive shaft 10 is an integral arrangement, including a ball spline and a ball nut, that is, the ball spline and the ball nut are processed as a whole, that is, the outer surface of the same hollow shaft is processed into a spline, and the inner cavity is processed into a ball nut. , to play the role of the shaft.
- the screw drive shaft 10 is fitted by the ball nut of the inner ring and the ball screw 12 while the shaft and the drive are being driven.
- the ball spline of the screw drive shaft 10 is hollow near one end of the ball screw 12, and the inner cavity of the hollow portion is processed into a ball nut.
- the inner cavity of the ball nut is fitted with one end of the ball screw 12, and the ball screw 12 is mounted.
- the other end is mounted on the rear end of the fixed frame 3 through the second bearing set 16, thereby axially fixing the ball screw 12, and the ball screw 12 is rotatable about the axis.
- the inner cavity of the axial guiding mechanism 11 and the ball spline of the screw drive shaft 10 are mounted by ball cooperation, so that the axial guiding mechanism 11 guides the screw driving shaft 10 in front and rear axial movement, and also performs the circumferential direction limit. .
- the outer ring of the axial guiding mechanism 11 is mounted to the middle of the fixed frame 3 by the first bearing set 9, so that the axial direction of the axial guiding mechanism 11 is fixed in position, but it can be rotated along the axis.
- the second injection gear 15 is coupled to the trailing end of the ball screw 12, and the rotation of the second injection gear 15 drives the ball screw 12 to rotate, and drives the ball nut of the screw drive shaft 10 to move axially, thereby driving the screw 1 to move back and forth.
- the retaining ring 4 is mounted at the rear end of the screw 1 (i.e., the moving state of the retaining ring 4 is the same as that of the screw 1), and one end of the spring 5 is fixed to the end surface of the retaining ring 4, and the other end is fixed to the end surface of the second pre-plastic gear 8.
- the pre-molded motor 6 is fixed on the fixed frame 3
- the first pre-plastic gear 7 is mounted on the shaft of the pre-plastic motor 6, and the second pre-molded gear 8 is fixedly coupled to the end surface of the axial guiding mechanism 11, the first pre-plastic gear 7 and the second pre-plastic gear 8 are directly meshed or driven by a belt (or a chain or the like).
- the injection motor 13 is fixed to the fixed frame 3, and the first injection gear 14 is mounted on the shaft of the injection motor 13, and is directly meshed with the second injection gear 15 or driven by a belt (or a chain or the like).
- the pre-molding motor 6 and the injection motor 13 cause the screw 1 to complete rotation or axial back and forth movement.
- the pre-molding motor 6 is powered, transmitted to the second pre-plastic gear 8 through the first pre-plastic gear 7, and the second pre-molding gear 8 drives the axial guiding mechanism 11 to rotate, thereby driving the shaft 10 through the axial guiding mechanism 11 and the screw.
- the ball spline cooperates to drive the screw drive shaft 10 to rotate about the axis, and the drive screw 1 rotates to perform a pre-plastic action.
- the screw 1 rotates in the cylinder 2 while receding linearly with respect to the cylinder 2 in the direction of the axis B, and the injection motor 15 rotates, causing the ball screw 12 to rotate and the screw drive shaft 10 to retreat.
- the retaining ring 4 follows the screw 1 linearly backwards, and the compression spring 5 provides back pressure compensation for the pre-plastic phase; the other back pressure is generated by the slip of the injection motor 13 and the pre-molding motor 6, preferably through a pressure sensor or the like.
- the device is used in conjunction with closed-loop control to adjust the back pressure.
- the pre-molding phase is completed, the pre-molding motor 6 is locked, the injection motor 13 is powered, the ball screw 12 is driven to rotate by the first injection gear 14 and the second injection gear 15, and the ball nut and the ball of the shaft 10 are driven by the screw.
- the screw drive shaft 10 is driven to retreat linearly, and the screw 1 is retracted to complete the retraction of the screw 1.
- the pre-molding motor 6 is locked and does not rotate, and the injection motor 13 supplies power, and the ball screw 12 is driven to rotate by the first injection gear 14 and the second injection gear 15, and then the ball nut of the screw drive shaft 10 is engaged with the ball screw 12.
- the screw drive shaft 10 and the screw 1 are directly pushed forward along the axis B with respect to the barrel 2, and the injection action of the screw 1 is completed.
- the spring 5 is extended, and the released spring force provides partial pressure for the injection action.
- the invention also provides an injection molding machine which adopts the above-mentioned injection molding device of the invention, has a small load during the injection molding process, and the acceleration is greatly improved, which helps to improve the process quality of the injection molded product.
- the screw drive shaft is integrated, and the double function of the ball spline and the ball nut is realized at the same time, which provides the guiding effect and greatly reduces the friction coefficient during the operation of the injection molding system and improves the injection acceleration.
- the elastic energy storage device can perform back pressure compensation during the pre-plasticization process, and compresses the energy storage, effectively reducing the rated power of the injection drive motor and reducing the cost of the injection system.
- the qualifiers similar to "first" and “second” appearing in this document do not refer to the limitation of chronological order, quantity, or importance, but merely to be a technique in the technical solution. Features are distinguished from another technical feature. Similarly, the qualifiers similar to “one” appearing herein are not intended to limit the quantity, but rather to describe the technical features that have not appeared in the foregoing. Similarly, modifiers similar to "about” and “approximately” appearing before a numeral in this document usually include the number and its specific The meaning should be understood in conjunction with the context. Similarly, unless a noun is modified by a particular quantity, it should be considered as including the singular and the plural. In the technical solution, the singular number of the technical features may be included, and the plural may also be included. Technical characteristics.
- the injection molding system and the injection molding machine provided by the present invention achieve the following technical effects and have industrial applicability:
- the integrated design of the screw drive shaft realizes the dual function of the ball spline and the ball nut, which provides the guiding effect and greatly reduces the friction coefficient during the operation of the injection molding system and improves the injection acceleration.
- the elastic energy storage device can perform back pressure compensation during the pre-plasticization process, and compresses the energy storage, effectively reducing the rated power of the injection drive motor and reducing the cost of the injection system.
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A high-performance electric injection molding mechanism and an injection molding machine. The high-performance electric injection molding mechanism comprises a screw rod (1), a screw rod drive shaft (10), a ball lead-screw (12), and an axial guiding mechanism (11). The screw rod drive shaft (10) comprises a ball spline and a ball nut. In the injection molding system and the injection molding machine, when an injection action is performed, the number of components needing to make movement is small; only the screw rod (1), the screw rod drive shaft (10) and other mechanisms need to make movement, and other drive and transmission components do not make axial movement along with injection actions, the mass of the system is light during the injection actions, the movement inertia is greatly reduced, accordingly, the response speed and the precision of the injection actions are greatly improved, and the drive power is also greatly reduced.
Description
本发明属于塑料领域,涉及一种在注塑成型机等中使用的电动式注塑机构。The invention belongs to the field of plastics and relates to an electric injection molding mechanism used in an injection molding machine or the like.
塑料行业的消费速度一直在增长,因此,注塑机整体技术水平的提高对于增强塑料行业的竞争力至关重要。The consumption rate of the plastics industry has been increasing. Therefore, the improvement of the overall technical level of injection molding machines is crucial to enhance the competitiveness of the plastics industry.
目前,注塑机主要包括电机、减速传动***、螺杆、丝杠螺母副等部件,其中,螺杆是注塑机的重要部件,用来对塑料进行输送、压实、熔化、搅拌和施压,上述所有动作都是通过螺杆在料筒内的旋转以及沿轴向移动来完成的。在螺杆旋转时,塑料对于机筒内壁、螺杆螺槽底面、螺棱推进面以及塑料与塑料之间在都会产生摩擦及相互运动。At present, the injection molding machine mainly includes motors, reduction transmission systems, screws, screw nut pairs and other components. Among them, the screw is an important part of the injection molding machine, used for conveying, compacting, melting, stirring and pressing the plastic. The action is accomplished by the rotation of the screw within the barrel and the movement in the axial direction. When the screw rotates, the plastic will rub against each other on the inner wall of the barrel, the bottom surface of the screw groove, the screw advance surface, and between the plastic and the plastic.
注塑时间对于塑料的成型有着至关重要的作用,同时需要保证注塑***具有足够的响应速度(即螺杆加速度),从而保证能在短时间内将熔体注入模具的型腔中。目前传统的注塑装置中,注射过程当中需要运动的部件结构量多且复杂(例如,包括螺杆、伺服电机、预塑传动***、轴承组、注射螺母及射出滑板座等部件)。根据牛顿第二定律,当注射压力一定的时候,如果射出运动***的总质量较大,则螺杆获得的加速度随之下降,即注射响应速度受到极大削减,无法在极短时间内达到要求的注射速度,对高速射出要求的工况影响很大。另外,目前传统的射出***中的运动部件的直线导向以滑动摩擦方式实现,其接触面磨损快、发热多、润滑要求高、润滑不足时出现爬行现象,同时也增加了驱动电机额外消耗的功率。The injection time is crucial for the shaping of the plastic, and it is necessary to ensure that the injection system has sufficient response speed (ie screw acceleration) to ensure that the melt can be injected into the cavity of the mold in a short time. In the conventional injection molding apparatus, the amount of components that need to be moved during the injection process is large and complicated (for example, including a screw, a servo motor, a pre-plasticized transmission system, a bearing set, an injection nut, and an injection slide seat). According to Newton's second law, when the injection pressure is constant, if the total mass of the injection motion system is large, the acceleration obtained by the screw will decrease, that is, the injection response speed is greatly reduced, and the required speed cannot be achieved in a very short time. The injection speed has a great influence on the working conditions required for high-speed injection. In addition, the linear guide of the moving parts in the conventional injection system is realized by sliding friction, and the contact surface wears quickly, the heat is high, the lubrication requirement is high, the lubrication phenomenon occurs when the lubrication is insufficient, and the power consumed by the drive motor is also increased. .
有鉴于此,如何设计一种新的电动注塑***及包含该***的注塑机,以消除现有技术中的上述缺陷和不足,是业内相关技术人员亟待解决的一项课题。In view of this, how to design a new electric injection molding system and an injection molding machine including the same to eliminate the above-mentioned defects and deficiencies in the prior art is an urgent problem to be solved by those skilled in the art.
发明内容Summary of the invention
为了克服现有技术中的技术问题,本发明提供了一种电动注塑***及包含该注塑***的注塑机,在执行注射动作时,需要运动的部件比目前传统的注塑成型机少的多,运动惯量大大减小,注射***的效应速度和注***度都大大提高。
In order to overcome the technical problems in the prior art, the present invention provides an electric injection molding system and an injection molding machine including the same, which requires less moving parts than conventional conventional injection molding machines when performing an injection operation. The inertia is greatly reduced, and the effect speed and injection accuracy of the injection system are greatly improved.
本发明第一方面,提供一种注塑成型机的注塑***,包括:In a first aspect of the invention, an injection molding system for an injection molding machine is provided, comprising:
一螺杆;a screw
一螺杆驱动轴,所述螺杆驱动轴包括滚珠花键和滚珠螺母,所述螺杆装配在所述螺杆驱动轴上;a screw drive shaft, the screw drive shaft includes a ball spline and a ball nut, the screw is mounted on the screw drive shaft;
一滚珠丝杠,所述滚珠丝杠与所述螺杆驱动轴的所述滚珠螺母配合安装,所述滚珠丝杠使所述螺杆驱动轴和所述螺杆沿轴线方向前后移动;和a ball screw, the ball screw being mounted in cooperation with the ball nut of the screw drive shaft, the ball screw moving the screw drive shaft and the screw back and forth in an axial direction; and
一轴向导向机构,所述轴向导向机构与所述螺杆驱动轴的滚珠花键配合安装。An axial guiding mechanism is mounted with the ball spline of the screw drive shaft.
优选地,所述注塑***中,所述螺杆和所述螺杆驱动轴做轴向前后移动,所述滚珠丝杠和所述轴向导向机构不做轴向前后移动。Preferably, in the injection molding system, the screw and the screw drive shaft are axially moved back and forth, and the ball screw and the axial guiding mechanism do not move axially back and forth.
优选地,所述螺杆驱动轴为一体式设置。Preferably, the screw drive shaft is provided in one piece.
优选地,所述注塑***还包括一弹性储能装置和一挡环,其中,所述挡环装配于所述螺杆的近螺杆驱动轴的一端,使得所述挡环的运动状态与所述螺杆相同,所述弹性储能装置的一端装配于所述挡环上,另一端保持固定。Preferably, the injection molding system further includes an elastic energy storage device and a retaining ring, wherein the retaining ring is fitted to one end of the screw drive shaft of the screw, so that the movement state of the retaining ring and the screw Similarly, one end of the elastic energy storage device is mounted on the retaining ring, and the other end is fixed.
优选地,所述弹性储能机构和所述螺杆驱动轴同轴设置。Preferably, the elastic energy storage mechanism and the screw drive shaft are coaxially disposed.
优选地,所述轴向导向机构的内腔与所述螺杆驱动轴的滚珠花键通过滚珠配合安装,使得所述轴向导向机构对所述螺杆驱动轴做前后轴向移动的导向,同时也提供所述螺杆驱动轴圆周方向的限位。Preferably, the inner cavity of the axial guiding mechanism and the ball spline of the screw drive shaft are mounted by ball cooperation, so that the axial guiding mechanism guides the screw drive shaft to move axially forward and backward, and also A limit of the circumferential direction of the screw drive shaft is provided.
本发明第二方面,提供一种注塑成型机,包括如本发明第一方面所述的注塑***以及合模***。According to a second aspect of the invention, there is provided an injection molding machine comprising the injection molding system and the mold clamping system according to the first aspect of the invention.
与现有技术相比较,本发明所提供的技术方案具有以下优点:Compared with the prior art, the technical solution provided by the present invention has the following advantages:
1.本发明提供的注塑***以及注塑机中,螺杆驱动轴包括滚珠花键和滚珠螺母,为一体式设置,同时实现了滚珠花键和滚珠螺母的双重功能,提供导向作用的同时大大降低了注塑***运行过程中的摩擦系数,提升了射出加速度。1. In the injection molding system and the injection molding machine provided by the invention, the screw drive shaft comprises a ball spline and a ball nut, and is integrated, and realizes the dual functions of the ball spline and the ball nut, and provides a guiding effect while greatly reducing the guide. The coefficient of friction during the operation of the injection molding system increases the injection acceleration.
2.本发明提供的注塑***以及注塑机中,执行注射动作时,需要运动的部件很少,只有螺杆和螺杆驱动轴(以及选择性配置的弹性储能装置,包括但不限于弹簧等)做轴向前后移动,而电机、齿轮/皮带传动部、轴承组、滚珠丝杠、轴向导向机构及射出滑板座等其它部件均保持固定,不随注射动作做轴向前后运动,注塑***的移动部分的质量很轻,在注射压力一定的情况下,射出运动***的总质量大大减小,运动惯量大大减小,螺杆获得的加速度大大提升,因此注射
***的效应速度和注***度都大大提高。2. In the injection molding system and the injection molding machine provided by the present invention, when the injection operation is performed, there are few parts that need to be moved, and only the screw and the screw drive shaft (and the selectively arranged elastic energy storage device, including but not limited to springs) are used. The axis moves back and forth, and the motor, gear/belt drive, bearing set, ball screw, axial guide mechanism and injection slide seat remain fixed, do not move axially back and forth with the injection action, the moving part of the injection molding system The quality is very light. When the injection pressure is constant, the total mass of the injection movement system is greatly reduced, the exercise inertia is greatly reduced, and the acceleration obtained by the screw is greatly improved, so the injection is performed.
The system's effect speed and injection accuracy are greatly improved.
3.本发明的注塑***中的注射螺杆与螺杆驱动轴直接装配,无需额外的安装加工过程,使得注射螺杆与螺杆驱动轴可以保持同步运动,并且,螺杆驱动轴也为一体加工设计,注塑***的稳定性大大提高。3. The injection screw of the injection molding system of the invention is directly assembled with the screw drive shaft, and no additional installation process is required, so that the injection screw and the screw drive shaft can maintain synchronous movement, and the screw drive shaft is also designed for integral processing, and the injection molding system The stability is greatly improved.
4.本发明提供的注塑***以及注塑机设有弹性储能装置,并且与注射螺杆的尾部连接,预塑过程中能够进行背压压力补偿,并且压缩储能,在注射过程中释放弹性储能装置,可将推力直接地、准确地作用在螺杆上,有效地提升射出压力和速度;并且,弹性储能机构和螺杆驱动轴同轴设置,提高了注塑***的稳定性。4. The injection molding system and the injection molding machine provided by the invention are provided with an elastic energy storage device, and are connected with the tail of the injection screw, can perform back pressure compensation during the pre-plasticization process, and compress energy storage, and release elastic energy storage during the injection process. The device can directly and accurately apply the thrust to the screw to effectively increase the injection pressure and speed; and the elastic energy storage mechanism and the screw drive shaft are coaxially arranged to improve the stability of the injection molding system.
5.本发明中弹性储能装置的应用,预塑过程中能够进行背压压力补偿,并且压缩储能,有效降低了注射驱动电机的额定功率,减小注射***的成本。5. The application of the elastic energy storage device in the invention, the back pressure pressure compensation can be performed in the pre-plasticizing process, and the compression energy storage can effectively reduce the rated power of the injection driving motor and reduce the cost of the injection system.
关于本发明的优点与精神可以通过以下的发明详述及附图得到进一步的了解。The advantages and spirit of the present invention will be further understood from the following detailed description of the invention and the accompanying drawings.
图1是本发明所提供的注塑***的第一实施例的原理示意图。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of the principle of a first embodiment of an injection molding system provided by the present invention.
图2是本发明所提供的注塑***的第一实施例的结构俯视图。2 is a top plan view showing the structure of a first embodiment of the injection molding system provided by the present invention.
图3是本发明所提供的注塑***的第一实施例的驱动/传动过程俯视图。3 is a top plan view of the drive/drive process of the first embodiment of the injection molding system provided by the present invention.
最佳实施例Best embodiment
下面结合附图详细说明本发明的具体实施例。然而,应当将本发明理解成并不局限于以下描述的这种实施方式,并且本发明的技术理念可以与其他公知技术或功能与那些公知技术相同的其他技术组合实施。Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention should be construed as being not limited to the embodiments described below, and the technical idea of the present invention can be implemented in combination with other known techniques or other techniques having the same functions as those of the known art.
在以下具体实施例的说明中,为了清楚展示本发明的结构及工作方式,将借助诸多方向性词语进行描述,但是应当将“前”、“后”、“左”、“右”、“外”、“内”、“向外”、“向内”、“轴向”、“径向”等词语理解为方便用语,而不应当理解为限定性词语。In the following description of the specific embodiments, in order to clearly illustrate the structure and the mode of operation of the present invention, it will be described by a plurality of directional words, but should be "front", "back", "left", "right", "outside" Words such as "inner", "outward", "inward", "axial", "radial" and the like are understood to be convenience words and should not be construed as limiting words.
术语说明Terminology
1、螺杆驱动轴:本发明的螺杆驱动轴一体设置,指的是将滚珠花键和滚珠螺母作为为一个整体,即同一根中空轴的外表面加工成花键,内腔加工成滚珠螺
母,作为螺杆驱动轴,其在连轴和传动的同时,通过其内圈的滚珠螺母和滚珠丝杠配合(螺杆驱动轴和滚珠丝杠非一体加工),为滚珠丝杠提供轴向导向,从而保证滚珠丝杠的推动力方向始终与整个射出部分(包括螺杆+螺杆驱动轴+滚珠丝杠)的轴线重合。1. Screw drive shaft: The screw drive shaft of the present invention is integrally arranged, which refers to the ball spline and the ball nut as a whole, that is, the outer surface of the same hollow shaft is processed into a spline, and the inner cavity is processed into a ball screw.
The mother, as the screw drive shaft, is axially guided by the ball nut of the inner ring and the ball screw (the screw drive shaft and the ball screw are not integrally processed) while the shaft and the drive are connected, This ensures that the direction of the driving force of the ball screw always coincides with the axis of the entire injection portion (including the screw + screw drive shaft + ball screw).
2、轴向导向机构:与螺杆驱动轴的滚珠花键部分配合安装,对其做轴向限位,同时提供轴向前后移动的导向。2. Axial guiding mechanism: It is matched with the ball spline part of the screw drive shaft, which is axially constrained, and provides axial and forward movement guidance.
本发明的目的在于提供一种高性能注塑***以及配置有该注塑***的注塑机,减轻注塑***运行时的负载,提升注塑***的响应速度及精度,同时减小注塑***的驱动功率,提升效能降低成本。The object of the present invention is to provide a high-performance injection molding system and an injection molding machine equipped with the injection molding system, which can reduce the load of the injection molding system during operation, improve the response speed and accuracy of the injection molding system, and reduce the driving power of the injection molding system and improve the efficiency. cut costs.
下面结合附图1-3详细说明本发明的具体实施例。Specific embodiments of the present invention are described in detail below with reference to Figures 1-3.
本发明提供的注塑***,包括:The injection molding system provided by the invention comprises:
螺杆1、料筒2、固定机架3、挡环4、弹簧5、预塑电机6、第一预塑齿轮7、第二预塑齿轮8、第一轴承组9、螺杆驱动轴10、轴向导向机构11、滚珠丝杠12、注射电机13、第一注射齿轮14、第二注射齿轮15、第二轴承组16、喷嘴17。Screw 1, barrel 2, fixed frame 3, retaining ring 4, spring 5, pre-plastic motor 6, first pre-plastic gear 7, second pre-plastic gear 8, first bearing set 9, screw drive shaft 10, shaft The guide mechanism 11, the ball screw 12, the injection motor 13, the first injection gear 14, the second injection gear 15, the second bearing group 16, and the nozzle 17.
在本说明书中,移动部件的“前进”是指朝靠近喷嘴17的方向移动,“后退”是指朝远离喷嘴17的方向移动。In the present specification, "forward" of the moving member means moving toward the nozzle 17, and "reverse" means moving in a direction away from the nozzle 17.
在本说明书中,所述“后端”、“后侧”是指向远离螺杆方向延伸的一端。In the present specification, the "rear end" and "rear side" are ends that extend away from the direction of the screw.
在本说明书中,所述“沿轴线方向前后移动”、“前后轴向移动”指的是相对于固定机架前后移动。In the present specification, the "moving back and forth in the axial direction" and "the axial movement in the front and rear direction" mean moving back and forth with respect to the fixed frame.
本发明的实施方式中,一种优选的预塑过程中的驱动机构包括预塑电机6、第一预塑齿轮7和第二预塑齿轮8,需注意的是,本领域技术人员可采取其他可替代的驱动方式来完成预塑驱动机构的功能,包括但不限于采用中空轴电机驱动等本领域技术人员所熟知的方式。In an embodiment of the invention, a preferred pre-molding drive mechanism comprises a pre-plastic motor 6, a first pre-plastic gear 7 and a second pre-plastic gear 8, it being noted that one skilled in the art may take other An alternative drive to accomplish the function of the pre-drive drive mechanism includes, but is not limited to, a hollow shaft motor drive or the like well known to those skilled in the art.
本发明的实施方式中,一种优选的注射过程中的驱动机构包括注射电机13、第一注射齿轮14和第二注射齿轮15,需注意的是,本领域技术人员可采取其他可替代的驱动方式来完成注射驱动机构的功能,包括但不限于采用电机直驱等本领域技术人员所熟知的方式。In an embodiment of the present invention, a preferred driving mechanism during the injection process includes an injection motor 13, a first injection gear 14, and a second injection gear 15. It should be noted that those skilled in the art may adopt other alternative drives. The manner in which the function of the injection drive mechanism is accomplished includes, but is not limited to, the use of motor direct drive, and the like, which is well known to those skilled in the art.
本发明的实施方式中,优选地,注塑***包括配合安装的螺杆驱动轴和轴向导向机构,对其做轴向限位,同时提供轴向前后移动的导向,本领域技术
人员可采用其他可替换的结构实现将驱动机构的旋转传递至螺杆,并使螺杆轴向移动的功能。In an embodiment of the present invention, preferably, the injection molding system includes a screw drive shaft and an axial guiding mechanism that are fitted and mounted, and is axially constrained while providing axial forward and backward movement guidance.
The person can use other alternative structures to achieve the function of transmitting the rotation of the drive mechanism to the screw and moving the screw axially.
实施例一:Embodiment 1:
以下,参照图1-3对本发明第一实施方式的注塑***结构进行说明。Hereinafter, the structure of an injection molding system according to a first embodiment of the present invention will be described with reference to Figs.
图1示出了本发明第一实施方式的注塑***的原理示意图。Fig. 1 is a schematic view showing the principle of an injection molding system of a first embodiment of the present invention.
图2是以剖面的方式表示第一实施方式的注塑***的俯视图。Fig. 2 is a plan view showing the injection molding system of the first embodiment in a cross section.
料筒为2,固定机架为3,固定机架3用于对注塑***进行支承。料筒2通过螺栓固定联接在固定机架3的前端,在料筒2的前端设有喷嘴17,在喷嘴17的前方可配置有合模***(图示未标出)。The barrel is 2 and the fixed frame is 3, and the fixed frame 3 is used to support the injection molding system. The barrel 2 is fixedly coupled to the front end of the fixed frame 3 by bolts, and a nozzle 17 is provided at the front end of the barrel 2, and a mold clamping system (not shown) may be disposed in front of the nozzle 17.
起到推出构件的作用的螺杆1,螺杆1的主体与料筒2的内腔配合安装,螺杆1可沿料筒2的轴线做前后或旋转运动。The screw 1 functions as a push-out member, and the main body of the screw 1 is fitted with the inner cavity of the cylinder 2, and the screw 1 can be moved forward and backward or along the axis of the cylinder 2.
螺杆1的尾端与螺杆驱动轴10的前端固连,保证螺杆1的运动状态与螺杆驱动轴10的运动状态相同。The trailing end of the screw 1 is fixed to the front end of the screw drive shaft 10 to ensure that the movement state of the screw 1 is the same as that of the screw drive shaft 10.
螺杆驱动轴10为一体式设置,包括滚珠花键和滚珠螺母,即指将滚珠花键和滚珠螺母作为一个整体加工,即同一根中空轴的外表面加工成花键,内腔加工成滚珠螺母,起到传动连轴作用。螺杆驱动轴10在连轴和传动的同时,通过其内圈的滚珠螺母和滚珠丝杠12配合安装。The screw drive shaft 10 is an integral arrangement, including a ball spline and a ball nut, that is, the ball spline and the ball nut are processed as a whole, that is, the outer surface of the same hollow shaft is processed into a spline, and the inner cavity is processed into a ball nut. , to play the role of the shaft. The screw drive shaft 10 is fitted by the ball nut of the inner ring and the ball screw 12 while the shaft and the drive are being driven.
螺杆驱动轴10的滚珠花键靠近滚珠丝杠12的一端为中空部,该中空部的内腔加工成滚珠螺母,滚珠螺母的内腔与滚珠丝杠12的一端配合安装,滚珠丝杠12的另一端通过第二轴承组16安装在固定机架3的尾端,从而对滚珠丝杠12进行轴向限位固定,滚珠丝杠12可绕轴线做旋转运动。The ball spline of the screw drive shaft 10 is hollow near one end of the ball screw 12, and the inner cavity of the hollow portion is processed into a ball nut. The inner cavity of the ball nut is fitted with one end of the ball screw 12, and the ball screw 12 is mounted. The other end is mounted on the rear end of the fixed frame 3 through the second bearing set 16, thereby axially fixing the ball screw 12, and the ball screw 12 is rotatable about the axis.
轴向导向机构11的内腔与螺杆驱动轴10的滚珠花键通过滚珠配合安装,从而使得轴向导向机构11对螺杆驱动轴10做前后轴向运动的导向,同时也做圆周方向的限位。The inner cavity of the axial guiding mechanism 11 and the ball spline of the screw drive shaft 10 are mounted by ball cooperation, so that the axial guiding mechanism 11 guides the screw driving shaft 10 in front and rear axial movement, and also performs the circumferential direction limit. .
轴向导向机构11的外圈通过第一轴承组9安装于固定机架3的中部,从而使得轴向导向机构11的轴向被限位固定,但其可沿轴线做旋转运动。The outer ring of the axial guiding mechanism 11 is mounted to the middle of the fixed frame 3 by the first bearing set 9, so that the axial direction of the axial guiding mechanism 11 is fixed in position, but it can be rotated along the axis.
第二注射齿轮15与滚珠丝杠12的尾端联接,第二注射齿轮15旋转可带动滚珠丝杠12旋转运动,驱动螺杆驱动轴10的滚珠螺母轴向运动,从而驱动螺杆1前后运动。
The second injection gear 15 is coupled to the trailing end of the ball screw 12, and the rotation of the second injection gear 15 drives the ball screw 12 to rotate, and drives the ball nut of the screw drive shaft 10 to move axially, thereby driving the screw 1 to move back and forth.
挡环4安装在螺杆1的尾端(即挡环4的运动状态与螺杆1相同),弹簧5的一端固定在挡环4的端面,另一端固定在第二预塑齿轮8的端面。The retaining ring 4 is mounted at the rear end of the screw 1 (i.e., the moving state of the retaining ring 4 is the same as that of the screw 1), and one end of the spring 5 is fixed to the end surface of the retaining ring 4, and the other end is fixed to the end surface of the second pre-plastic gear 8.
预塑电机6固定在固定机架3上,第一预塑齿轮7安装在预塑电机6的轴上,第二预塑齿轮8固定连接在轴向导向机构11的端面,第一预塑齿轮7和第二预塑齿轮8直接啮合或通过皮带(或链条等)传动。The pre-molded motor 6 is fixed on the fixed frame 3, the first pre-plastic gear 7 is mounted on the shaft of the pre-plastic motor 6, and the second pre-molded gear 8 is fixedly coupled to the end surface of the axial guiding mechanism 11, the first pre-plastic gear 7 and the second pre-plastic gear 8 are directly meshed or driven by a belt (or a chain or the like).
注射电机13固定在固定机架3上,第一注射齿轮14安装在注射电机13的轴上,和第二注射齿轮15直接啮合或通过皮带(或链条等)传动。The injection motor 13 is fixed to the fixed frame 3, and the first injection gear 14 is mounted on the shaft of the injection motor 13, and is directly meshed with the second injection gear 15 or driven by a belt (or a chain or the like).
预塑电机6和注射电机13使螺杆1完成旋转或轴向前后运动。The pre-molding motor 6 and the injection motor 13 cause the screw 1 to complete rotation or axial back and forth movement.
以下,参照图1-3对本发明第一实施方式的注塑装置的工作过程进行说明。Hereinafter, an operation of the injection molding apparatus according to the first embodiment of the present invention will be described with reference to Figs.
1.预塑阶段:1. Pre-plastic stage:
预塑电机6提供动力,通过第一预塑齿轮7传递给第二预塑齿轮8,第二预塑齿轮8带动轴向导向机构11旋转,从而通过轴向导向机构11和螺杆驱动轴10的滚珠花键配合带动螺杆驱动轴10绕轴线旋转,驱动螺杆1转动,进行预塑动作。The pre-molding motor 6 is powered, transmitted to the second pre-plastic gear 8 through the first pre-plastic gear 7, and the second pre-molding gear 8 drives the axial guiding mechanism 11 to rotate, thereby driving the shaft 10 through the axial guiding mechanism 11 and the screw. The ball spline cooperates to drive the screw drive shaft 10 to rotate about the axis, and the drive screw 1 rotates to perform a pre-plastic action.
在预塑的过程中,螺杆1在料筒2内旋转,同时相对于料筒2沿轴线B方向直线后退,注射电机15旋转,使得滚珠丝杠12转动,螺杆驱动轴10后退。此时,挡环4跟随螺杆1直线后退,压缩弹簧5,为预塑阶段提供背压补偿;其他背压压力由注射电机13和预塑电机6的转差产生,优选地可以通过压力传感器等装置的配合使用进行闭环控制,调节背压大小。In the pre-molding process, the screw 1 rotates in the cylinder 2 while receding linearly with respect to the cylinder 2 in the direction of the axis B, and the injection motor 15 rotates, causing the ball screw 12 to rotate and the screw drive shaft 10 to retreat. At this time, the retaining ring 4 follows the screw 1 linearly backwards, and the compression spring 5 provides back pressure compensation for the pre-plastic phase; the other back pressure is generated by the slip of the injection motor 13 and the pre-molding motor 6, preferably through a pressure sensor or the like. The device is used in conjunction with closed-loop control to adjust the back pressure.
预塑阶段完成,预塑电机6锁止不转,注射电机13提供动力,通过第一注射齿轮14和第二注射齿轮15驱动滚珠丝杠12转动,再由螺杆驱动轴10的滚珠螺母和滚珠丝杠12的配合,驱动螺杆驱动轴10直线后退,螺杆1后退,完成螺杆1的松退。The pre-molding phase is completed, the pre-molding motor 6 is locked, the injection motor 13 is powered, the ball screw 12 is driven to rotate by the first injection gear 14 and the second injection gear 15, and the ball nut and the ball of the shaft 10 are driven by the screw. When the screw 12 is engaged, the screw drive shaft 10 is driven to retreat linearly, and the screw 1 is retracted to complete the retraction of the screw 1.
2.注射阶段:2. Injection stage:
预塑电机6锁止不转,注射电机13提供动力,通过第一注射齿轮14和第二注射齿轮15驱动滚珠丝杠12转动,再由螺杆驱动轴10的滚珠螺母和滚珠丝杠12配合,直接推动螺杆驱动轴10和螺杆1相对于料筒2沿轴线B直线前进,完成螺杆1的注射动作,该过程中,弹簧5伸展,释放的弹簧力为注射动作提供部分压力。The pre-molding motor 6 is locked and does not rotate, and the injection motor 13 supplies power, and the ball screw 12 is driven to rotate by the first injection gear 14 and the second injection gear 15, and then the ball nut of the screw drive shaft 10 is engaged with the ball screw 12. The screw drive shaft 10 and the screw 1 are directly pushed forward along the axis B with respect to the barrel 2, and the injection action of the screw 1 is completed. During this process, the spring 5 is extended, and the released spring force provides partial pressure for the injection action.
因此,上述整个过程只有螺杆1、挡环4、弹簧5、螺杆驱动轴10进行轴向前进或后退,进行直线移动,其他动力元件和传动元件等均不做轴向移动。整个注射装置的射出加速度大大提高,进而提升了注塑***的响应加速度和速度,保证
了射出动作的控制精度,同时弹簧提供的背压补偿和注射压力也增强,减小了注射***的驱动功率,提高了注塑***的整体工艺,提升效能,降低成本。Therefore, in the above process, only the screw 1, the retaining ring 4, the spring 5, and the screw drive shaft 10 are axially advanced or retracted, and linear movement is performed, and other power components and transmission components are not axially moved. The injection acceleration of the entire injection device is greatly improved, thereby improving the response acceleration and speed of the injection molding system, and ensuring
The control precision of the injection action, while the back pressure compensation and injection pressure provided by the spring are also enhanced, the driving power of the injection system is reduced, the overall process of the injection molding system is improved, the efficiency is improved, and the cost is reduced.
本发明还提供一种注塑机,该注塑机采用了本发明上述提到的注塑装置,在进行注塑工艺过程中的射出动作的负载小,加速度大大提高,有助于提高注塑产品的工艺质量。The invention also provides an injection molding machine which adopts the above-mentioned injection molding device of the invention, has a small load during the injection molding process, and the acceleration is greatly improved, which helps to improve the process quality of the injection molded product.
综上所述,本发明所提供的注塑***以及注塑机的技术方案具有以下技术效果:In summary, the technical solutions of the injection molding system and the injection molding machine provided by the present invention have the following technical effects:
1.螺杆驱动轴为一体式设置,同时实现了滚珠花键和滚珠螺母的双重功能,提供导向作用的同时大大降低了注塑***运行过程中的摩擦系数,提升了射出加速度。1. The screw drive shaft is integrated, and the double function of the ball spline and the ball nut is realized at the same time, which provides the guiding effect and greatly reduces the friction coefficient during the operation of the injection molding system and improves the injection acceleration.
2.执行注射动作时,需要运动的部件很少,只有螺杆和螺杆驱动轴(以及选择性配置的弹性储能装置,包括但不限于弹簧等)做轴向前后移动,而电机、齿轮/皮带传动部、轴承组、滚珠丝杠、轴向导向机构及射出滑板座等其它部件均保持固定,不随注射动作做轴向前后运动,注塑***的移动部分的质量很轻,在注射压力一定的情况下,射出运动***的总质量大大减小,运动惯量大大减小,螺杆获得的加速度大大提升,因此注射***的效应速度和注***度都大大提高。2. When performing the injection action, there are few parts that need to be moved. Only the screw and screw drive shaft (and the selectively configured elastic energy storage device, including but not limited to springs, etc.) do axial forward and backward movement, while the motor, gear/belt The transmission part, the bearing set, the ball screw, the axial guiding mechanism and the injection slide seat are kept fixed, and do not move axially back and forth with the injection action. The moving part of the injection molding system is very light, and the injection pressure is constant. Under the hood, the total mass of the injection motion system is greatly reduced, the motion inertia is greatly reduced, and the acceleration obtained by the screw is greatly improved, so the effect speed and injection precision of the injection system are greatly improved.
3.注射螺杆与螺杆驱动轴直接装配,无需额外的安装加工过程,使得注射螺杆与螺杆驱动轴可以保持同步运动,并且,螺杆驱动轴也为一体加工设计,注塑***的稳定性大大提高。3. The injection screw and the screw drive shaft are directly assembled, no additional installation process is required, so that the injection screw and the screw drive shaft can maintain synchronous movement, and the screw drive shaft is also designed for integral processing, and the stability of the injection molding system is greatly improved.
4.设有弹性储能装置,并且与注射螺杆的尾部连接,预塑过程中能够进行背压压力补偿,并且压缩储能,在注射过程中释放弹性储能装置,可将推力直接地、准确地作用在螺杆上,有效地提升射出压力和速度;并且,弹性储能机构和螺杆驱动轴同轴设置,提高了注塑***的稳定性。4. It is equipped with elastic energy storage device and is connected with the tail of the injection screw. It can compensate the back pressure during the pre-plasticization process, compress the energy storage, release the elastic energy storage device during the injection process, and directly and accurately push the thrust. The ground acts on the screw to effectively increase the injection pressure and speed; and the elastic energy storage mechanism and the screw drive shaft are coaxially arranged to improve the stability of the injection molding system.
5.弹性储能装置在预塑过程中能够进行背压压力补偿,并且压缩储能,有效降低了注射驱动电机的额定功率,减小注射***的成本。5. The elastic energy storage device can perform back pressure compensation during the pre-plasticization process, and compresses the energy storage, effectively reducing the rated power of the injection drive motor and reducing the cost of the injection system.
如无特别说明,本文中出现的类似于“第一”、“第二”的限定语并非是指对时间顺序、数量、或者重要性的限定,而仅仅是为了将本技术方案中的一个技术特征与另一个技术特征相区分。同样地,本文中出现的类似于“一”的限定语并非是指对数量的限定,而是描述在前文中未曾出现的技术特征。同样地,本文中在数词前出现的类似于“大约”、“近似地”的修饰语通常包含本数,并且其具体
的含义应当结合上下文意理解。同样地,除非是有特定的数量量词修饰的名词,否则在本文中应当视作即包含单数形式又包含复数形式,在该技术方案中即可以包括单数个该技术特征,也可以包括复数个该技术特征。Unless otherwise stated, the qualifiers similar to "first" and "second" appearing in this document do not refer to the limitation of chronological order, quantity, or importance, but merely to be a technique in the technical solution. Features are distinguished from another technical feature. Similarly, the qualifiers similar to "one" appearing herein are not intended to limit the quantity, but rather to describe the technical features that have not appeared in the foregoing. Similarly, modifiers similar to "about" and "approximately" appearing before a numeral in this document usually include the number and its specific
The meaning should be understood in conjunction with the context. Similarly, unless a noun is modified by a particular quantity, it should be considered as including the singular and the plural. In the technical solution, the singular number of the technical features may be included, and the plural may also be included. Technical characteristics.
本说明书中所述的只是本发明的较佳具体实施例,以上实施例仅用以说明本发明的技术方案而非对本发明的限制。凡本领域技术人员依本发明的构思通过逻辑分析、推理或者有限的实验可以得到的技术方案,皆应在本发明的范围之内。The description of the present invention is only a preferred embodiment of the present invention, and the above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to limit the present invention. Any technical solution that can be obtained by a person skilled in the art according to the concept of the present invention by logic analysis, reasoning or limited experimentation should be within the scope of the present invention.
综上所述,本发明提供的注塑***以及注塑机实现了以下技术效果,具备工业实用性:In summary, the injection molding system and the injection molding machine provided by the present invention achieve the following technical effects and have industrial applicability:
1.一体式设计的螺杆驱动轴实现了滚珠花键和滚珠螺母的双重功能,提供导向作用的同时大大降低注塑***运行过程中的摩擦系数,提升了射出加速度。1. The integrated design of the screw drive shaft realizes the dual function of the ball spline and the ball nut, which provides the guiding effect and greatly reduces the friction coefficient during the operation of the injection molding system and improves the injection acceleration.
2.执行注射动作时,需要运动的部件很少,只有螺杆和螺杆驱动轴(以及选择性配置的弹性储能装置,包括但不限于弹簧等)做轴向前后移动,而电机、齿轮/皮带传动部、轴承组、滚珠丝杠、轴向导向机构及射出滑板座等其它部件均保持固定,不随注射动作做轴向前后运动,注塑***的移动部分的质量很轻,在注射压力一定的情况下,射出运动***的总质量大大减小,运动惯量大大减小,螺杆获得的加速度大大提升,因此注射***的效应速度和注***度都大大提高。2. When performing the injection action, there are few parts that need to be moved. Only the screw and screw drive shaft (and the selectively configured elastic energy storage device, including but not limited to springs, etc.) do axial forward and backward movement, while the motor, gear/belt The transmission part, the bearing set, the ball screw, the axial guiding mechanism and the injection slide seat are kept fixed, and do not move axially back and forth with the injection action. The moving part of the injection molding system is very light, and the injection pressure is constant. Under the hood, the total mass of the injection motion system is greatly reduced, the motion inertia is greatly reduced, and the acceleration obtained by the screw is greatly improved, so the effect speed and injection precision of the injection system are greatly improved.
3.注射螺杆与螺杆驱动轴直接装配,无需额外的安装加工过程,使得注射螺杆与螺杆驱动轴可以保持同步运动,并且,螺杆驱动轴也为一体加工设计,注塑***的稳定性大大提高。3. The injection screw and the screw drive shaft are directly assembled, no additional installation process is required, so that the injection screw and the screw drive shaft can maintain synchronous movement, and the screw drive shaft is also designed for integral processing, and the stability of the injection molding system is greatly improved.
4.设有弹性储能装置,并且与注射螺杆的尾部连接,预塑过程中能够进行背压压力补偿,并且压缩储能,在注射过程中释放弹性储能装置,可将推力直接地、准确地作用在螺杆上,有效地提升射出压力和速度;并且,弹性储能机构和螺杆驱动轴同轴设置,提高了注塑***的稳定性。4. It is equipped with elastic energy storage device and is connected with the tail of the injection screw. It can compensate the back pressure during the pre-plasticization process, compress the energy storage, release the elastic energy storage device during the injection process, and directly and accurately push the thrust. The ground acts on the screw to effectively increase the injection pressure and speed; and the elastic energy storage mechanism and the screw drive shaft are coaxially arranged to improve the stability of the injection molding system.
5.弹性储能装置在预塑过程中能够进行背压压力补偿,并且压缩储能,有效降低了注射驱动电机的额定功率,减小注射***的成本。
5. The elastic energy storage device can perform back pressure compensation during the pre-plasticization process, and compresses the energy storage, effectively reducing the rated power of the injection drive motor and reducing the cost of the injection system.
Claims (7)
- 一种注塑成型机的注塑***,其特征在于,包括:An injection molding system for an injection molding machine, comprising:一螺杆;a screw一螺杆驱动轴,所述螺杆驱动轴包括滚珠花键和滚珠螺母,所述螺杆装配在所述螺杆驱动轴上;a screw drive shaft, the screw drive shaft includes a ball spline and a ball nut, the screw is mounted on the screw drive shaft;一滚珠丝杠,所述滚珠丝杠与所述螺杆驱动轴的所述滚珠螺母配合安装,所述滚珠丝杠使所述螺杆驱动轴和所述螺杆沿轴线方向前后移动;和a ball screw, the ball screw being mounted in cooperation with the ball nut of the screw drive shaft, the ball screw moving the screw drive shaft and the screw back and forth in an axial direction; and一轴向导向机构,所述轴向导向机构与所述螺杆驱动轴的滚珠花键配合安装。An axial guiding mechanism is mounted with the ball spline of the screw drive shaft.
- 如权利要求1所述的注塑***,其特征在于,所述注塑***中,所述螺杆和所述螺杆驱动轴做轴向前后移动,所述滚珠丝杠和所述轴向导向机构不做轴向前后移动。The injection molding system according to claim 1, wherein in the injection molding system, the screw and the screw drive shaft are axially moved back and forth, and the ball screw and the axial guide mechanism are not used as an axis. Move back and forth.
- 如权利要求1所述的注塑***,其特征在于,所述螺杆驱动轴为一体式设置。The injection molding system of claim 1 wherein said screw drive shaft is integrally provided.
- 如权利要求1所述的注塑***,其特征在于,所述注塑***还包括一弹性储能装置和一挡环,其中,所述挡环装配于所述螺杆的近螺杆驱动轴的一端,使得所述挡环的运动状态与所述螺杆相同,所述弹性储能装置的一端装配于所述挡环上,另一端保持固定。The injection molding system of claim 1 wherein said injection molding system further comprises an elastic energy storage device and a retaining ring, wherein said retaining ring is fitted to one end of said proximal screw drive shaft of said screw such that The movement state of the retaining ring is the same as that of the screw, and one end of the elastic energy storage device is mounted on the retaining ring, and the other end is fixed.
- 如权利要求4所述的注塑***,其特征在于,所述弹性储能机构和所述螺杆驱动轴同轴设置。The injection molding system of claim 4 wherein said resilient energy storage mechanism and said screw drive shaft are coaxially disposed.
- 如权利要求1所述的注塑***,其特征在于,所述轴向导向机构的内腔与所述螺杆驱动轴的滚珠花键通过滚珠配合安装,使得所述轴向导向机构对所述螺杆驱动轴做前后轴向移动的导向,同时也提供所述螺杆驱动轴圆周方向的限位。The injection molding system of claim 1 wherein the inner cavity of the axial guide mechanism and the ball spline of the screw drive shaft are mounted by ball fit such that the axial guide mechanism drives the screw The shaft is guided by the axial movement of the front and rear, and also provides the limit of the circumferential direction of the screw drive shaft.
- 一种注塑成型机,包括如权利要求1-6任一项所述的注塑***以及合模***。 An injection molding machine comprising the injection molding system and the mold clamping system according to any one of claims 1-6.
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