CN212372634U

CN212372634U - Mode locking device and injection molding machine

Info

Publication number: CN212372634U
Application number: CN202020309536.2U
Authority: CN
Inventors: 刘相尚; 潘玲玲; 徐文静; 帅华元
Original assignee: Shenzhen Leadwell Technology Co Ltd
Current assignee: Guangdong Lijin Plastic Machinery Intelligent Manufacturing Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2021-01-19
Anticipated expiration: 2030-03-12

Abstract

The utility model belongs to the technical field of mould plastics and die-casting equipment, especially, relate to a mode locking device and injection molding machine. The mold locking device includes: the mold locking structure comprises a cylinder sleeve with a hydraulic cavity, a piston mechanism with one end connected with the cylinder sleeve and an auxiliary oil storage mechanism capable of storing hydraulic oil, wherein the other end of the piston mechanism is connected with the movable template; the supporting structure is used for supporting the mold locking structure and comprises a mounting plate, the mounting plate is used for fixing the cylinder sleeve and connecting one end of the cylinder sleeve, a through hole communicated with the hydraulic cavity is formed in the mounting plate, one end of the piston mechanism penetrates through the through hole and is located in the hydraulic cavity, an oil hole communicated with the hydraulic cavity is further formed in the mounting plate, the oil hole and the through hole are arranged at intervals, the auxiliary oil storage mechanism is connected to the oil hole and is communicated with the hydraulic cavity through the oil hole, and hydraulic oil can flow in the auxiliary oil storage mechanism and the; wherein the mounting plate and the cylinder liner are integrally formed. The utility model discloses mode locking device's structure has been simplified.

Description

Mode locking device and injection molding machine

Technical Field

The utility model belongs to the technical field of mould plastics, die-casting equipment, especially, relate to a mode locking device and injection molding machine.

Background

An injection molding machine is one of machines commonly used in the mechanical industry and used for injection molding of products. The traditional injection molding machine mainly comprises six parts: the device comprises a die assembly mechanism, a glue melting mechanism, a rack, a hydraulic oil storage mechanism, an electric control mechanism, a safety door and other safety protection mechanisms, wherein the die assembly mechanism and the glue melting mechanism are core components of the injection molding machine.

The mold closing mechanism of the direct-pressure injection molding machine in the prior art comprises a mold closing oil cylinder and a tail plate, wherein the mold closing oil cylinder is connected to an auxiliary oil storage mechanism through an oil pipe, and the movable mold plate and the fixed mold plate are locked by fixing the mold closing oil cylinder and the tail plate. However, the structure is relatively complex, installation and maintenance are difficult, and oil is transmitted through an oil pipe, so that the hydraulic circulation efficiency is low.

Disclosure of Invention

An object of the embodiment of the utility model is to provide a mode locking device to solve the complicated and low problem of hydraulic oil circulation efficiency of mode locking device structure among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a mold clamping apparatus for moving a movable die plate to and holding the movable die plate at a predetermined position in a predetermined direction, the mold clamping apparatus including:

the mold locking structure comprises a cylinder sleeve, a driving pump connected with the cylinder sleeve, a piston mechanism with one end connected with the movable mold plate and an auxiliary oil storage mechanism with an oil storage cavity, wherein the cylinder sleeve is provided with a hydraulic cavity, and hydraulic oil driven by the driving pump is contained in the hydraulic cavity;

the supporting structure comprises a mounting plate, the mounting plate is connected to one end of the cylinder sleeve and used for fixing the cylinder sleeve, a through hole communicated with the hydraulic cavity is formed in the mounting plate, the other end of the piston mechanism penetrates through the through hole and is located in the hydraulic cavity, an oil hole communicated with the hydraulic cavity is further formed in the mounting plate, the oil hole and the through hole are arranged at intervals, the auxiliary oil storage mechanism is connected with the mounting plate, and the oil storage cavity is communicated with the hydraulic cavity through the oil hole; the driving pump drives the hydraulic oil to enable the piston mechanism to slide in a reciprocating mode along the preset direction, and the hydraulic oil flows between the hydraulic cavity and the oil storage cavity;

wherein the mounting plate is integrally formed with the cylinder liner.

The utility model provides a mode locking structure's beneficial effect lies in: the cylinder sleeve and the mounting plate are integrally formed through a casting process, so that the structure of the mold locking device is simplified, and subsequent maintenance and assembly are facilitated. An oil hole is formed in the mounting plate, and the auxiliary oil storage mechanism is directly connected to the oil hole. The piston mechanism reciprocates while changing the volume of the hydraulic pressure chamber. Specifically, when the volume of the hydraulic cavity is increased, the auxiliary oil storage mechanism can quickly inject hydraulic oil into the hydraulic cavity; when the volume of the hydraulic cavity is reduced, the auxiliary oil storage mechanism can quickly recover hydraulic oil from the hydraulic cavity, so that oil circuit circulation is simplified, and the circulation efficiency of the hydraulic oil is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a three-dimensional structure diagram of a mold locking device according to an embodiment of the present invention;

fig. 2 is a sectional view of the mold clamping apparatus of fig. 1;

fig. 3 is a perspective view of a mold clamping device according to another embodiment of the present invention;

fig. 4 is a partially enlarged view of fig. 1 at a.

Wherein, in the figures, the respective reference numerals:

100. a mold locking device; 10. a mode locking structure; 11. a cylinder liner; 12. an auxiliary oil storage mechanism; 13. a piston mechanism; 20. a support structure; 21. mounting a plate; 22. a support pull rod; 111. a front cover; 40. a mechanical lock; 50. moving the template; 211. a fixed leg; 212. a notch; 213. an oil hole; 112. a sleeve body; 41. a lock body; 411. a locking block; 412. a limiting key; 421. locking the groove; 51. moving the template; 117. a hydraulic chamber; 115. a hydraulic front cavity; 116 a hydraulic rear chamber; 121. an oil storage chamber; 131. a floating piston; 132. a piston rod; 133. moving the piston guide rod quickly;

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and 3, a mold clamping device 100 according to an embodiment of the present invention will now be described. The mold clamping device 100 is used to move the movable mold plate 50 to a predetermined position in a predetermined direction and hold it at the predetermined position. The mold clamping device 100 includes: a mold clamping structure 10 and a support structure 20. The mold clamping structure 10 comprises a cylinder sleeve 11 with a hydraulic cavity 117, a driving pump for driving hydraulic oil to flow, a piston mechanism 13 with one end connected with the cylinder sleeve 11, and an auxiliary oil storage mechanism 12 with an oil storage cavity 121, wherein the other end of the piston mechanism 13 is connected with the movable mold plate 50. Alternatively, the cylinder liner 11 is made of cast iron by a casting process. The supporting structure 20 is used for supporting the mold clamping structure 10 and includes a mounting plate 21, and the mounting plate 21 is used for fixing the cylinder sleeve 11 and connecting one end of the cylinder sleeve 11. Optionally, the piston mechanism 13 includes a floating piston 131, a piston rod 132 and a fast moving piston guide rod 133 which are located in the hydraulic pressure chamber 117, the floating piston 131 divides the hydraulic pressure chamber 117 into a hydraulic front chamber 115 and a hydraulic rear chamber 116, the hydraulic front chamber 115 is disposed near the mounting plate 21, and the mounting plate 21 is opened with a through hole communicating the hydraulic front chamber 115. One end of the piston rod 132 is inserted through the through hole and connected to the floating piston 131, and the other end of the piston rod 132 is connected to the movable platen 50. One end of the fast-moving piston guide 133 is inserted into the piston rod 132, and the other end is fixed to the cylinder liner 11. It is understood that the hydraulic front chamber 115 and the hydraulic rear chamber 116 are filled with hydraulic oil, the hydraulic front chamber 115 and the hydraulic rear chamber 116 are also connected with the driving pump, and the internal oil chamber of the piston rod 132 is also connected with the driving pump through the fast moving piston guide 133. The driving pump is used for driving hydraulic oil in the inner cavity of the piston rod 132, and the hydraulic oil drives the piston mechanism 13 to rapidly reciprocate. The driving pump drives the hydraulic oil in the hydraulic front cavity 115 and the hydraulic rear cavity 116 to complete the mold opening/locking action. The mounting plate 21 is further provided with an oil hole 213 communicated with the hydraulic front cavity 115, the oil hole 213 and the through hole are arranged at intervals, the auxiliary oil storage mechanism is connected to the oil hole, the oil storage cavity 121 is communicated with the hydraulic front cavity 115 through the oil hole, when the piston mechanism slides back and forth along a preset direction, the floating piston 131 moves away, the hydraulic front cavity 115 is communicated with the hydraulic rear cavity 116, and hydraulic oil flows between the hydraulic front cavity 115 and the oil storage cavity 121 quickly due to the difference of unit cross-sectional volumes of the hydraulic front cavity 115 and the hydraulic rear cavity 116. Specifically, hydraulic oil drives the floating piston 131 to move away, the fast moving piston guide rod 133 pushes the piston rod 132 to move, the piston rod 132 drives the movable template 50 to be matched and locked with the fixed template 51, in the process, the volumes of the hydraulic front cavity 115 and the oil storage cavity 121 are reduced, meanwhile, the volume of the hydraulic rear cavity 116 is increased, the hydraulic oil quickly flows into the hydraulic front cavity 115 from the oil storage cavity 121, and then flows into the hydraulic rear cavity 116 through the floating piston 131; on the contrary, when the movable die plate 50 is unlocked from the fixed die plate 51 and moves toward the mounting plate 21, the floating piston 131 moves away, the volume of the hydraulic rear chamber 116 becomes smaller, the volume of the hydraulic front chamber 115 and the volume of the oil storage chamber 121 become larger, and the hydraulic oil rapidly flows from the hydraulic rear chamber 116 into the hydraulic front chamber 115 and the oil storage chamber 121 through the floating piston 131. Specifically, after the piston rod 132 moves in place, the floating piston 131 is closed to block the communication between the hydraulic front cavity 115 and the hydraulic rear cavity 116, and the driving pump drives the hydraulic oil in the hydraulic front cavity 115 and the hydraulic rear cavity 116 again to realize high-pressure mold locking and mold opening actions. Alternatively, the mounting plate 21 is integrally formed with the cylinder liner 11 by a casting process.

The cylinder sleeve 11 and the mounting plate 21 are integrally formed through a casting process, so that the structure of the mold locking device 100 is simplified, subsequent maintenance and installation are facilitated, and the assembly efficiency is improved. The mounting plate 21 is provided with an oil hole 213, the auxiliary oil storage mechanism 12 is directly connected to the oil hole 213, and hydraulic oil is injected or recovered into the hydraulic front cavity 115 through the oil hole 213, thereby simplifying oil circuit circulation and improving the circulation efficiency of the hydraulic oil.

Referring to fig. 2 and 4, optionally, the cylinder liner 11 includes a sleeve body 112, a front cover 111 and a rear cover, and the front cover 111 and the rear cover are respectively connected to two ends of the sleeve body 112. The cross-sectional shape of the sleeve body 112 is circular, square or oval.

In one embodiment, the edge of the mounting plate 21 is provided with a plurality of notches 212, each notch 212 is spaced along the circumference of the mounting plate 21, any two adjacent notches 212 are divided into a fixed leg 211 on the mounting plate 21, and the supporting structure 20 further includes a supporting rod 22 having one end connected to the fixed leg 211 and the other end connected to an external structural member. The structure of the mold clamping apparatus 100 is further simplified by dividing the fixing legs 211, and the material used for the mounting plate 21 is saved.

In one embodiment, the fixing leg 211 is provided with a connecting hole at a position connected to the support rod 22, and one end of the support rod 22 is detachably connected to the fixing leg 211 through the connecting hole. The support link 22 is detachably coupled to the corresponding fixing leg 211 through the coupling hole, facilitating subsequent replacement and maintenance.

In one embodiment, the fixing legs 211 are provided in plural numbers, each fixing leg 211 is symmetrically arranged around the circumference of the cylinder liner 11, and the number of the support rods 22 is adapted to the number of the fixing legs 211 and is arranged in one-to-one correspondence. The plurality of support pull rods 22 are arranged, so that the mode locking structure 10 can be kept stable in operation, and the reliability of the mode locking structure 10 is improved.

In one embodiment, the predetermined direction includes a first predetermined direction and a second predetermined direction disposed opposite to the first predetermined direction.

In one embodiment, the movable platen 50 moves in a first predetermined direction and engages with the stationary platen 51 to perform mold locking, and the movable platen 50 moves in a second predetermined direction and opens the stationary platen 51. Two auxiliary oil storage mechanisms 12 are arranged, and the two auxiliary oil storage mechanisms 12 are respectively positioned in the two notches 212. The two auxiliary oil storage mechanisms 12 are respectively disposed in the two notches 212, so that the structure of the mold locking device 100 is more compact, and meanwhile, the two auxiliary oil storage mechanisms 12 can improve the efficiency of recovering or injecting hydraulic oil.

In one embodiment, the inner wall of the notch 212 is disposed in a cambered surface, and the oil hole 213 is formed on the inner wall of the notch 212 connected to the auxiliary oil storage mechanism 12.

In one embodiment, the mold clamping apparatus 100 further comprises a mechanical lock 40 for locking the movable mold plate 50 and connecting the mounting plate 21 and the movable mold plate 50 at both ends thereof, respectively. When the locking device 100 or the die casting machine equipment is in a static state, the mechanical lock 40 in the working state can avoid the abnormal action of the movable die plate 50, thereby improving the safety.

In one embodiment, the mechanical lock 40 is located between the two auxiliary oil reservoirs 12.

Alternatively, the mechanical lock 40 includes a lock body 41 disposed in one of the notches 212 and connected to the mounting plate 21, and a lock bar having one end connected to the lock body 41 and the other end connected to the movable platen 50. Alternatively, when the locking bar is disconnected from the lock body 41, the movable mold plate 50 slides relative to the fixed mold and the locking bar slides relative to the lock body 41, and after the movable mold plate 50 slides in place, the locking bar is in locking connection with the lock body 41. The lock body 41 is disposed in the notch 212, which is advantageous for the compactness of the mold clamping device 100.

In one embodiment, the lock body 41 includes a locking block 411 connected to the mounting plate 21 and having a locking hole, and a limiting key 412 connected to the locking block 411, the locking block 411 further has a limiting hole communicated with the locking hole, the locking rod has one end penetrating through the locking hole and having a plurality of locking grooves 421, and one end of the limiting key 412 is inserted into the limiting hole and abuts against one of the locking grooves 421 to limit the locking rod to be separated from the locking block 411. The movable die plate 50 can be locked at different positions by abutting the limit key 412 against different lock grooves 421.

The utility model also provides an injection molding machine, it includes if locking mold device 100, connect the driving pump of locking mold device 100, the movable mould board 50 be connected with locking mold device 100 and with the fixed mould board 51 of movable mould board 50 complex.

It will be appreciated that the injection molding machine may be a direct pressure injection molding machine, among others.

In other embodiments, the mold clamping apparatus 100 may also be used in a die casting machine.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A mold clamping apparatus for moving a movable die plate to and holding the movable die plate at a predetermined position in a predetermined direction, comprising:

wherein the mounting plate is integrally formed with the cylinder liner.

2. The mode locking apparatus according to claim 1, wherein: the supporting structure comprises a supporting structure and a plurality of supporting pull rods, wherein a plurality of notches are formed in the edge of the mounting plate, the notches are arranged at intervals along the circumferential direction of the mounting plate, any two adjacent notches are formed by dividing the mounting plate into fixed support legs, one end of each supporting pull rod is connected with the corresponding fixed support leg, and the other end of each supporting pull rod is connected with an external structural part.

3. The mode locking apparatus according to claim 2, wherein: the fixed support leg is connected with the position of the supporting pull rod and is provided with a connecting hole, and one end of the supporting pull rod is detachably connected with the fixed support leg through the connecting hole.

4. The mode locking apparatus according to claim 2, wherein: the fixed support legs are arranged in a plurality, the fixed support legs are symmetrically arranged around the circumferential direction of the cylinder sleeve, and the number of the supporting pull rods is matched with that of the fixed support legs and is arranged in a one-to-one correspondence mode.

5. The mode locking apparatus according to claim 2, wherein: the auxiliary oil storage mechanisms are arranged in two numbers, and the two auxiliary oil storage mechanisms are respectively positioned in the two notches and are communicated with the hydraulic cavity.

6. The mode locking apparatus according to claim 5, wherein: the inner wall of breach is the cambered surface setting, just the inner wall of breach is connected the position of supplementary oil storage mechanism has all been seted up the oilhole.

7. The mode locking apparatus according to claim 2, wherein: the mode locking device also comprises a mechanical lock which is used for locking the movable template, and two ends of the movable template are respectively connected with the mounting plate and the movable template.

8. The mode locking apparatus according to claim 7, wherein: the mechanical lock comprises a lock body arranged in one of the notches and connected with the mounting plate, and a lock rod, one end of the lock body is connected with the lock catch, and the other end of the lock body is connected with the movable template.

9. The mode locking apparatus according to claim 8, wherein: the lock body is including connecting the mounting panel and seted up the locking piece of lockhole and connecting the spacing key of locking piece, the intercommunication has still been seted up to the locking piece the spacing hole of lockhole, the locking lever wears to establish a plurality of locked grooves have been seted up to the one end of lockhole, the one end of spacing key is inserted spacing hole and butt wherein one the locked groove, in order to restrict the locking lever breaks away from the locking piece.

10. An injection molding machine comprising the mold clamping device according to any one of claims 1 to 9.