TWM247385U - Mold adjusting apparatus for injection molding machine - Google Patents

Description

M247385 4. Creation Description (1) [Technical Field to which the New Type belongs] This creation relates to a device for adjusting the positioning of a mold in a plastic injection molding machine. · [Previous technology] Due to the large volume and high injection pressure of large plastic injection molding machines, the fixed and movable molds are currently completed by hydraulic equipment when closing or opening molds. When the movable mold and the fixed mold are closed, the pressure requirements are generally 175 kg / cm2. Because the mold is very precise, the hydraulic cylinder cannot drive the movable mold to rush to the fixed mold to close the mold at high speed, otherwise the mold will be subjected to Damage and damage due to impact, so usually need some buffer mechanism to provide the buffer function of the movable mold and fixed mold before closing the mold, and this buffer mechanism is usually completed by the hydraulic circuit, so that the movable mold is driven by the fast cylinder to the fixed mold Slow down the speed when moving to a proper distance, and then slowly close the movable mold and the fixed mold. Finally, the plastic material is injected into the mold. After the injection is completed, the rapid mold drives the movable mold out of the fixed mold, and the ejector pin Finished product ejected. The hydraulic buffer mechanism of the conventional injection molding machine includes a secondary hydraulic cylinder which is pre-filled with hydraulic oil. When the fast cylinder drives the movable mold to quickly approach the fixed mold to a predetermined distance, it is subject to resistance from the secondary hydraulic cylinder. At the same time, the hydraulic oil in the sub-hydraulic cylinder is slowly depressurized, so that the movable mold is also slowly approaching the fixed mold. Until the movable mold and the fixed mold are closed, the high-speed cylinder can be brought back to high pressure to close the movable mold and the fixed mold tightly. After the injection molding is completed, the fast oil cylinder drives the movable mold to leave the fixed mold, and then the secondary hydraulic cylinder is refilled with oil to perform the next cycle of injection molding operation.

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4. Creation instructions (2) After the fast oil cylinder of the conventional injection molding machine drives the movable mold away from the fixed mold, it must wait for the secondary hydraulic cylinder to be refilled before driving the movable mold and the fixed mold to close the mold, so it is a waste of time. There is no way to further increase production efficiency. [New content] "Technical problems to be solved"

The main purpose of this creation is to solve the problem that after the rapid oil cylinder driven movable mold of the traditional plastic injection molding machine is disengaged from the fixed mold, the auxiliary hydraulic cylinder must be filled with oil before the movable mold and the fixed mold can be closed again. The lack of further improvement in production efficiency. "Technical Means for Solving the Problem" The technical means of this creation is characterized by the improved design of the mechanism and the hydraulic circuit, so that the fast oil cylinder drives the movable mold away from the fixed mold and returns to the original position, and the fast oil cylinder is discharged. The hydraulic oil is pre-filled into the mold-opening cylinder that acts as a buffer, so that the movable mold can be driven by the fast cylinder to close the mold with the fixed mold immediately after the movable mold returns to its original position.

Based on this, the mold adjustment device of the injection molding machine provided by this creation uses a fast oil cylinder to fasten the movable mold combined with the movable plate and the fixed mold. During the mold clamping process, the high-pressure oil cylinder combined with the movable plate is vented. Pressure, and at the same time, the hydraulic oil flowing back from the fast cylinder is pre-filled into the mold opening cylinder combined with the high pressure cylinder. This creation additionally provides a positioning oil cylinder provided on a support frame, which is combined with a clamping nut and locks the clamping nut to a high-pressure hydraulic rod; the positioning oil cylinder is first relieved and then driven by a hydraulic motor The adjustment nut is retracted to the expected

Page 8 M247385 Creation Instructions (3) '-------- ~ _ Position Column Inner Column Compression Press

& Lunwang · 1¾ After the oil pressure gold scent, tk A is set, then j ^ μ w, so that ΊΙ which is combined with the high pressure oil cylinder body is moved, so that the top screw and the lock oil cylinder are provided. Correspondence of the split nut of the split nut: Afterward =: Move the inner screw of the split nut and the outer screw jack of the top nut i !: The cylinder shaft of the oil cylinder is fully ejected, and then the lock is driven by the oil motor =-then Move so that the top of the cylinder shaft of the positioning cylinder is adjusted in the high-pressure cylinder 骽 Λ yuan, and then make the positioning cylinder clean and fill the high speed red oil to raise the pressure to complete the mold clamping work. Red Cold's "Effects on the prior technology" and the prior art. This book uses the hydraulic oil produced during the quick cylinder return process to pre-fill the mold opening cylinder that acts as a buffer, which can return the mold back to its original position immediately. The Shaansu-speed oil cylinder is driven and closed with the fixed mold, which can shorten the time for rapid oil red restart and improve production efficiency. [Embodiment] Further explanation of other purposes and functions of this creation will be given in conjunction with the drawings. σ As shown in the first figure, this creation includes a movable plate 11 0 and a fixed plate π 2 owned by a general injection molding machine. The fixed plate 11 2 is used to set the fixed mold 11 6 included in the injection molding mold. , And the movable plate 11 〇 is used to set the movable mode 11 4. The movable plate 1 10 is also provided with a fast oil cylinder 100, and the number of the fast oil red i 00 may be two or more according to actual needs; the cylinder shaft system of the fast oil cylinder 100 is combined On the movable plate 1 10, the fast oil red 100 is connected to the first oil pipe 1001 and the second oil pipe 1002, and the first and second oil pipelines 100 to 100) 2

Page 9 M247385 4. Creation instructions (4) are all connected to the oil drum 108; on the path of the first oil pipe 1001, there is a path of the first oil valve 102, and the path of the second oil pipe 1002 A second oil valve 104 and a full oil valve 1 06 are provided on the top; the first oil valve 102 can control the filling of the hydraulic oil into the fast oil cylinder 1 00 to drive the movable plate 1 10 and the movable mold 1 1 4 closes towards the fixed mold π 6 and closes the mold, and at the same time, the hydraulic oil on the other end of the fast oil cylinder 100 passes the second oil valve 104 and the full oil valve 105 and returns to the oil barrel 108; The hydraulic oil can be filled into the fast oil cylinder 100 by controlling the second oil valve 104 to drive the movable mold Π 4 to leave the fixed mold 1 1 6 and at the same time the hydraulic oil inside the fast oil cylinder 100 can pass through The first oil valve 1 0 2 and the return oil drum 1 0 8 refer to the first and second figures at the same time. The movable plate 11 0 is combined with a high-pressure oil cylinder. The high-pressure oil cylinder includes a fixed plate 110 and a first oil valve. An oil-filled space 1 1 8 1 high-pressure piston 1 1 8 and a high-pressure oil cylinder 120 combined in the first oil-filled space 1 1 8 L, the high-pressure oil cylinder 12 0 has a second oil filling space 1 2 0 1 and a mold opening piston 1 2 8 is combined in the second oil filling space 1 2 0 1; the first oil filling space 1 1 8 1 and the second oil pipe 1 A third oil pipe 1003 is connected between 〇〇2, and a return oil pipe 1 4 is provided between the third oil pipe 1 003 and the second oil pipe 1 0 2 before the full oil valve 1 0. 8 连接。 8 connections. The second oil-filled space 1210 is connected to the first oil pipe 1001 through a fourth oil pipe 1004 and a control valve. The high-pressure piston Π 8, the high-pressure oil cylinder 1 2 0 and the mold opening piston 1 2 8 pass through a high-pressure piston rod 1 2 6, and are respectively locked at the front and rear ends of the high-pressure piston rod 1 2 6 respectively. The fixing nut 1 4 0 and the second fixing nut 1 4 2 are fixed, and a positioning plate 1 4 4 is fixed on the outer diameter of the second fixing nut 1 4 2. The hydraulic cylinder body 120 is provided with a horizontal top pillar 1 3 2, and an appropriate position of the top pillar 1 3 2 is provided with external screw teeth 1 3 2 1. Referring to the third figure, a support frame is fixed at the rear end of the high-pressure piston rod 6

Page 10 M247385 IV. Creation instructions (5) 1 4 6 The supporting frame 1 4 6 is provided with two sets of positioning cylinders 1 2 4 and the positioning cylinder shaft 1 2 4 1 faces forward and corresponds to the positioning plate 1 4 4 The positioning oil cylinder 1 2 4 is connected to the first oil pipe 1000 with a fifth oil pipe 105 and a control valve. The rear end of the high-pressure piston rod 1 2 5 has an external screw thread 1 2 6 1 of an appropriate length. A mold adjusting nut 1 3 6 is locked to the external screw thread 1 2 6 1, and the external diameter of the mold adjusting nut 1 3 6 is fixed. A passive sprocket i 3 8 is provided on the ground; a hydraulic motor 1 2 2 is provided on the support frame 1 4 6, and a central axis of the hydraulic motor 1 2 2 is provided with an active sprocket, and the active sprocket and the passive sprocket A chain is connected between 13 8 and the hydraulic motor 1 2 2 can be driven to forward or reverse along the high-pressure piston rod 1 2 6 when the hydraulic motor 1 2 2 is turned forward or backward; the hydraulic motor 1 2 2. The sixth oil pipe 1006 and the seventh oil pipe 1007 and the control valve are respectively connected to the first oil pipe 丨 00 丨 and the second oil pipe 002. … This creation additionally provides a clamping oil cylinder 13〇, which is connected to the first oil pipe 100 by the eighth oil officer ^ 0 08, and connected to the first oil pipe by the ninth oil pipe 丨 〇09. The oil officer 1 0 2 is provided with a split nut 1 3 4 on the cylinder shaft of the tension cylinder 1 30, and a symmetric split nut 134 is provided; when the eighth oil pipe 1 0 0 8 clamps the hydraulic oil When the oil cylinder 130 is tightened, the inner flute teeth of the two sets of split nuts 134, 134, can be driven to the outer teeth of the top 桎 i 3 2 丨 3 2 丨; when the ninth oil cylinder 1 009 is filled with oil, the jack 2 During the attack, the two sets of split nuts 134 and 134 are driven away from the engagement of the screw teeth 1321 outside the top pillar 132. Mengjiao 2 must go through the mold adjustment procedure before the molding work. Therefore, the device created by τ by Ershu and its operation method is as follows: A. Hydraulic oil is quickly and fixedly filled with fast oil rainbow 100 via 筮 _ u The driving activity refers to

Page 11 M247385 IV. Creation instructions (6) B. The first oil-filled space of the high-pressure oil cylinder 丨 丨 8 丨 The hydraulic oil is pressured through the third oil pipe 丨 〇 so that the pressure of the pressure oil cylinder is lower than 2 g / cm 2. C. In the process of rapid oil red 1000 oil filling, the hydraulic oil in the first oil pipe 100 simultaneously passes, and the four oil cylinders 1 0 04 fill the second oil filling space of the mold opening oil cylinder 1 2 0 1 'Move the auxiliary mold opening piston i 2 8 to the rear and touch the limit switch (not shown in the figure) to stop. D. During the filling process of the fast oil cylinder 100, the hydraulic oil at the other end of the fast oil cylinder i 00 is returned through the second oil pipe 1 002, and the back pressure of the full oil valve 106 is set to 4 kg / cm 2 in advance. Part of the hydraulic oil passes through the full oil valve 106, and part of the hydraulic oil is pre-charged into the first oil filling space 118b through the oil return pipe 148 and the third oil pipe 103, and the hydraulic oil passes through the sixth oil pipe 10. 〇6 The charging hydraulic motor 122 drives the hydraulic motor 1 2 2 to rotate forward, and then drives the passive sprocket 138 coupled to the adjusting nut 36 through a chain to rotate 'to make the adjusting nut 136 move a predetermined distance backward. F. The pressure of the positioning cylinder 1 2 2 is relieved. G. The first oil filling space 1 1 8 1 of the south pressure oil cylinder is filled with oil, so that the top pillar i 3 2 follows the south pressure oil cylinder body 12 0 and moves to the rear until the outer disc teeth of the top 1 q? Dagger 3 ? 1 8 oil pipe 1 0 0 8 is charged into the clamping cylinder 130 and the tight cylinder i3〇 is operated, so that

Page 12 M247385 IV. Creation instructions (7) The cutting nuts 1 3 4, 1 3 4 ′ are engaged with the outer threads 1 3 2 1 of the top branch 1 3 2. Η The hydraulic oil is charged into the positioning oil cylinder 12 through the fifth oil pipe 105, so that the positioning cylinder shaft 1241 is fully extended. I. The hydraulic oil is charged into the hydraulic motor 122 through the seventh oil pipe 1 0 7 and the hydraulic motor 122 is reversed, and then the mold adjusting nut 142 is moved forward along the high-pressure piston rod 126 until the positioning cylinder shaft 1241 reaches Holding the positioning plate 144 completes the mold adjustment. After the mold adjustment is completed, the high-speed cylinder can be raised to a high pressure (approximately i 7 5 kg / cin 2) from 1000 to generate mold clamping force. After the injection molding of the MJ is completed, the rapid cylinder 1 Q 〇 ring. 0 opening, and repeating the above-mentioned ones are only used to explain this ^ The drawing is to limit the form of this creation in any form. The best embodiment is not any work related to this creation under the spirit of enterprise creation. 'Yi' wherever there is protection in the same intent of this creative intention. > brocade or change should still include

Page 13 M247385 Brief description of the drawings The first picture is a plan sectional view showing the overall structure of the creative mold adjusting device. The second figure is a plan sectional view showing the structure of the high-pressure oil cylinder of the mold adjustment device of the present invention. The third figure is a plan sectional view showing the structure of the positioning cylinder of the creative mold adjusting device. [Description of component symbols] (1 0 0) Fast oil cylinder (1001) First oil pipe

(1002) second oil pipe (1003) third oil pipe (1004) fourth oil pipe (1005) fifth oil pipe (1006) sixth oil pipe (1007) seventh oil pipe (1008) eighth oil pipe (1009) ninth oil pipe (102 First oil valve (104) Second oil valve

(1 0 6) Full oil valve (108) Oil drum (1 1 0) movable plate (112) fixed plate (114) movable mold

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Brief description of the drawing (116) fixed die (118) high pressure piston (1181) first oil filling space (120) high pressure oil cylinder body (1201) second oil filling space (1 2 2) hydraulic motor (1 24) positioning oil cylinder (1241) Positioning cylinder shaft (126) High-pressure piston rod (1 2 6 1) Outer screw (128) Mold opening piston (130) Clamping cylinder (1 3 2) Top post (1 3 2 1) Outer screw ( 1 34) (1 34 ') Split nut (1 3 6) Adjusting nut (1 3 8) Passive sprocket (140) First fixing nut (142) Second fixing nut (144) Positioning plate (146) Support frame (1 4 8) oil return pipe

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Claims (1)

M247385 5. Scope of patent application 1. A mold adjustment device for an injection molding machine, comprising: a movable plate which is combined with a top post, the top post is provided with an external screw; a rapid oil cylinder, the cylinder shaft of which is coupled to the Movable plate, the fast oil cylinder is connected with a first oil pipe and a second oil pipe, the first oil pipe sends hydraulic oil to drive the fast oil cylinder forward, the second oil pipe sends hydraulic oil to drive the fast oil cylinder back, and the second oil pipe is provided with a full Oil valve A high-pressure oil cylinder is coupled to the movable plate. The high-pressure oil cylinder includes a high-pressure piston having a first oil-filled space and a high-pressure oil cylinder body combined with the first oil-filled space. The high-pressure oil cylinder body has a second oil-filled space. Space, the second oil-filled space combines a mold-opening piston, a third oil pipe is connected between the first oil-filled space and the second oil pipe, and between the second oil-filled space and the first oil pipe A fourth oil pipe is connected, the third oil pipe is provided with a check valve, and a return pipe is connected between the third oil pipe and the second oil pipe. When the fast oil cylinder is retracted, the returned hydraulic oil is affected by the full oil valve. Pre-filling the first oil-filling space through the oil return pipe; A high-pressure piston rod is threaded through the movable plate, the high-pressure oil cylinder body and the slotted piston, and a first fixing nut and a second fixing nut are respectively locked at the front and rear ends of the high-pressure piston rod. The nut is provided with a positioning plate, and the rear end of the high-pressure piston rod is provided with an external thread, which is locked with a mold adjusting nut, which is combined with a passive sprocket; a hydraulic motor whose driving shaft is combined with An active sprocket, the active sprocket and the passive sprocket are connected by a chain, and the mold nut is driven by the hydraulic motor to move forward and backward along the axial direction of the high-pressure piston rod; a positioning cylinder, Is fixed to the high-pressure piston rod by a support frame, and the positioning Page 16 M247385 5. The cylinder axis of the positioning cylinder of the patent application scope corresponds to the positioning plate; a clamping cylinder, the cylinder shaft of which is combined with a split nut, and the internal thread of the split nut corresponds to the top column For the position of the external thread, the clamping nut is used to drive the split nut to engage or disengage with the external thread of the top post. Page 17