Injection mold closing positioning structure and mold closing device

Abstract

The utility model discloses an injection mold closing positioning structure and a mold closing device, and the injection mold closing positioning structure comprises a fixed seat provided with four guide columns; a driving bracket is arranged in the center of the movable mold seat close to the fixed seat; the positioning support is provided with a mold opening and closing driving mechanism, and the movable mold base is connected to the mold opening and closing driving mechanism; the crankshaft assemblies are symmetrical about the central axis of the movable mold base, each crankshaft assembly comprises a first supporting arm, a second supporting arm, a pulling linkage arm, a first supporting shaft, a second supporting shaft, a third supporting shaft, a first pulling shaft and a second pulling shaft, the first supporting shafts are rotationally connected to the driving support, the first pulling shafts are rotationally connected to the positioning support, and the second supporting shafts are rotationally connected to the positioning support; the first supporting arm is provided with a positioning block, the positioning block is located on one side of the connecting line of the first supporting shaft and the second supporting shaft, the second lifting shaft is rotationally connected to the positioning block, and the third supporting shaft is rotationally connected to the fixing base. The mold opening and closing action is stable and reliable, the positioning effect is accurate, and the production precision and the production efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of injection molding equipment, in particular to an injection molding clamping positioning structure and clamping device. BACKGROUND

[0002] Injection molding machine is a widely used equipment in plastic molding industry, which is mainly used to make various plastic products by using thermoplastic or thermosetting plastic and plastic molding mold. The injection molding machine is mainly composed of an injection molding system, a clamping system, a hydraulic system and an electrical control system.

[0003] In the mold manufacturing and injection molding industry, the precision and stability of mold opening and closing directly affect the quality and production efficiency of products. The traditional mold opening and closing action usually adopts a simple linear driving mode, however, this structure has the problem of poor stability of mold opening and closing movement, which easily leads to unnecessary wear and tear, and also causes insufficient injection molding production precision. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems in the prior art. Therefore, the utility model provides an injection molding clamping positioning structure and clamping device, which has stable and reliable mold opening and closing action, can reduce structural damage, has accurate positioning effect and high production precision.

[0005] According to the injection molding clamping positioning structure of the first aspect of the utility model, the injection molding clamping positioning structure comprises:

[0006] The fixed seat is provided with four guide columns on one side;

[0007] The movable die seat is arranged on one side of the fixed seat, and the movable die seat is provided with four first guide sleeves which are respectively sleeved on the four guide columns, and the movable die seat is provided with a driving bracket at the center of the side close to the fixed seat;

[0008] The positioning bracket is arranged between the movable die seat and the fixed seat, and the positioning bracket is provided with four second guide sleeves which are respectively sleeved on the four guide columns, and the positioning bracket is further provided with at least two mold opening and closing driving mechanisms which are symmetric about the center axis of the movable die seat, and the movable die seat is connected to the driving end of the mold opening and closing driving mechanism;

[0009] The crankshaft assembly is provided with two groups and is symmetrical about the center axis of the movable die seat, and the crankshaft assembly comprises a first supporting arm, a second supporting arm, a pulling linkage arm, a first supporting shaft, a second supporting shaft, a third supporting shaft, a first pulling shaft and a second pulling shaft, opposite ends of the first supporting arm are rotationally connected with the first supporting shaft and the second supporting shaft respectively, opposite ends of the second supporting arm are rotationally connected with the second supporting shaft and the third supporting shaft respectively, opposite ends of the pulling linkage arm are rotationally connected with the first pulling shaft and the second pulling shaft respectively, the first supporting shaft is rotationally connected with the driving support, the first pulling shaft is rotationally connected with the positioning support, one side of the first supporting arm is provided with a positioning block, the positioning block is located on one side of the line connecting the first supporting shaft and the second supporting shaft, the second pulling shaft is rotationally connected with the positioning block, the third supporting shaft is rotationally connected with the fixed seat, the line connecting the first supporting shaft and the third supporting shaft is parallel to the guide column, the first pulling shaft is coated with a first wear-resistant copper layer, and the second pulling shaft is coated with a second wear-resistant copper layer.

[0010] In the embodiment, the positioning support is provided with a mold closing positioning groove on the side close to the fixed seat, and one end of the pulling linkage arm is located in the mold closing positioning groove.

[0011] In the embodiment, the mold opening and closing driving mechanism is provided with two groups, and the two groups of mold opening and closing driving mechanisms are located on opposite sides of the center axis of the movable die seat.

[0012] In the embodiment, the driving support is provided with a material ejecting driving mechanism, a material ejecting plate is connected to the driving end of the material ejecting driving mechanism, and the material ejecting plate is located on the side of the movable die seat close to the fixed seat.

[0013] In the embodiment, the material ejecting driving mechanism is located between the two groups of crankshaft assemblies, and the first pulling shaft and the second pulling shaft are both located on the side of the first supporting arm away from the center axis of the movable die seat.

[0014] In the embodiment, the first supporting arm is provided with a limiting block, and the limiting block is located on the side of the pulling linkage arm close to the material ejecting driving mechanism.

[0015] According to the mold closing device provided in the second aspect of the utility model, the mold closing device comprises the injection mold positioning structure of any one of the first aspect of the utility model.

[0016] In the embodiment, the mold closing device further comprises a fixed die seat arranged on the side of the movable die seat away from the fixed seat, and one end of each of the four guide columns is connected to the fixed die seat.

[0017] In the embodiment, the side of the fixed seat away from the movable die seat is rotationally connected with a gear ring and four gears, the four gears are all in meshing connection with the gear ring, and the four gears are respectively in threaded connection with one end of the four guide columns away from the fixed die seat.

[0018] The utility model has at least the following beneficial effects:

[0019] The first supporting shaft and the second supporting shaft are provided with positioning blocks on one side, the action force of the pulling linkage and the action force of the supporting positioning are staggered, the bending action of the first supporting arm and the second supporting arm during the pulling linkage during the mold opening can be effectively ensured to be smooth and reliable, thereby significantly reducing the structural damage caused by the movement being not smooth, the stability and reliability of the supporting effect of the first supporting arm and the second supporting arm on the movable die seat during the mold closing can be ensured, the reliability of the action during the pulling linkage is effectively ensured by arranging the wear-resistant copper layer on the surfaces of the two pulling shafts, thereby effectively improving the smoothness of the mold opening and closing action, the mold opening and closing action of the overall structure is stable and reliable, the positioning effect is accurate, the production precision and the production efficiency can be effectively improved; in addition, the movable die seat is connected and fixed to the driving support and the two crankshaft assemblies, during the mold closing, the mold closing supporting force of the fixed seat acts on the driving support through the crankshaft assembly, the mold closing supporting force is uniformly distributed in the middle region of the movable die seat close to the fixed seat, thereby effectively balancing the action force on the mold, the mold closing effect is stable and reliable, the precision during the production and processing is high, and the probability of deformation of the mold due to unbalanced force can be effectively reduced, the reliability during the production and processing is high, and the service life of the applied mold is long. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present practical new type will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 It is an internal structure schematic view of the injection mold closing and positioning structure during the mold opening of the embodiment of the present practical new type;

[0022] Figure 2 It is an internal structure schematic view of the injection mold closing and positioning structure during the mold closing of the embodiment of the present practical new type;

[0023] Figure 3 It is a three-dimensional structure schematic view of the injection mold closing and positioning structure during the mold opening of the embodiment of the present practical new type;

[0024] Figure 4 It is a three-dimensional structure schematic view of the two groups of crankshaft assemblies in the injection mold closing and positioning structure of the embodiment of the present practical new type;

[0025] Figure 5 It is a three-dimensional structure schematic view of the mold closing device of another embodiment of the present practical new type.

[0026] Reference signs:

[0027] Fixed seat 100, guide column 110, tooth ring 120, gear 130;

[0028] Movable die seat 200, first guide sleeve 210, driving support 220, material ejection driving mechanism 230, material ejection plate 240;

[0029] Positioning support 300, mold closing positioning groove 301, second guide sleeve 310, mold opening and closing driving mechanism 320;

[0030] Crankshaft assembly 400, first supporting arm 410, positioning block 411, limiting block 412, second supporting arm 420, pull linkage arm 430, first supporting shaft 440, second supporting shaft 450, third supporting shaft 460, first pull shaft 470, first wear-resistant copper layer 471, second pull shaft 480, second wear-resistant copper layer 481;

[0031] Fixed die seat 500. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the present application, it should be understood that, if there is a description of the orientation, for example, the orientation or position relationship indicated by up, down, left, right, front, back, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0034] In the description of the present application, if there is a description of the wire sleeve, support, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.

[0036] Injection molding is a widely used equipment in the plastic molding industry, mainly for making various shapes of plastic products by using plastic molding molds for thermoplastic or thermosetting plastics. The injection molding machine is mainly composed of an injection molding system, a mold clamping system, a hydraulic system and an electrical control system. In the mold manufacturing and injection molding industry, the precision and stability of mold opening and closing directly affect the quality and production efficiency of products. The traditional mold opening and closing action usually adopts a simple linear driving mode, such as directly pushing the movable mold base by a hydraulic cylinder or an air cylinder to perform the mold opening and closing action. However, this structure has the problems of poor stability of mold opening and closing movement, easy to cause unnecessary wear, and also causes insufficient injection molding production precision. Especially in the application of large molds or complex molds, these problems are particularly prominent.

[0037] In order to improve the precision and stability of mold opening and closing, some advanced mold manufacturers have begun to explore the structure of curved arm positioning. However, this structure still has the problems of unsmooth movement and inaccurate positioning. Especially when the mold size is large or needs to be frequently opened and closed, these problems will cause the decline of production efficiency and the instability of product quality. Therefore, there is an urgent need for an injection molding mold positioning structure with smooth movement and accurate positioning to meet the needs of high precision and high efficiency in the mold manufacturing and injection molding industry.

[0038] The injection molding mold positioning structure and the mold clamping device of the embodiments of the present application are described below with reference to the accompanying drawings. Figure 1 to the accompanying drawings, Figure 5 The injection molding mold positioning structure and the mold clamping device of the embodiments of the present application are described below with reference to the accompanying drawings.

[0039] With reference to Figures 1 to 4 The injection molding mold positioning structure of the first aspect embodiment of the present application comprises:

[0040] The fixed seat 100 is provided with four guide columns 110 on one side, and one end of the four guide columns 110 is connected to the fixed seat 100;

[0041] The movable mold base 200 is provided on one side of the fixed seat 100, and the movable mold base 200 is used for installing the mold. The movable mold base 200 is provided with four first guide sleeves 210 which are respectively sleeved outside the four guide columns 110, so that the first guide sleeves 210 can slide and translate along the guide columns 110. The movable mold base 200 is provided with a driving bracket 220 at the center of the side close to the fixed seat 100;

[0042] The positioning support 300 is arranged between the movable die holder 200 and the fixed die holder 100. The positioning support 300 is provided with four second guide sleeves 310, each of which is sleeved on the outer side of one of the four guide columns 110, so that the second guide sleeves 310 can slide and translate along the guide columns 110. The positioning support 300 is also provided with at least two mold opening and closing driving mechanisms 320 which are symmetric about the central axis of the movable die holder 200. The fixed parts of the mold opening and closing driving mechanisms 320 are connected to the positioning support 300, and the movable die holder 200 is connected to the driving ends of the mold opening and closing driving mechanisms 320. The mold opening and closing driving mechanisms 320 are used to drive the movable die holder 200 to advance along the guide columns 110, so as to adjust the relative position between the movable die holder 200 and the positioning support 300.

[0043] The crankshaft assembly 400 is provided with two groups, and the two groups of crankshaft assemblies 400 are symmetrical about the center axis of the movable mold base 200, the center axis of the movable mold base 200 is parallel to the guide column 110, the four guide columns 110 are rotationally symmetrical about the center axis of the movable mold base 200, and the two groups of crankshaft assemblies 400 are located between the movable mold base 200 and the fixed base 100. Each group of crankshaft assemblies 400 simultaneously connects corresponding positions of the fixed base 100, the positioning support 300 and the driving support 220. For each group of crankshaft assemblies 400: the crankshaft assembly 400 includes a first supporting arm 410, a second supporting arm 420, a pulling linkage arm 430, and mutually parallel first supporting shaft 440, second supporting shaft 450, third supporting shaft 460, first pulling shaft 470 and second pulling shaft 480. The opposite ends of the first supporting arm 410 are rotationally connected with the first supporting shaft 440 and the second supporting shaft 450, respectively. The opposite ends of the second supporting arm 420 are rotationally connected with the second supporting shaft 450 and the third supporting shaft 460, respectively. The opposite ends of the pulling linkage arm 430 are rotationally connected with the first pulling shaft 470 and the second pulling shaft 480, respectively. The first supporting shaft 440 is further rotationally connected with the driving support 220. The first pulling shaft 470 is further rotationally connected with the positioning support 300. One side of the first supporting arm 410 is provided with a positioning block 411, and the positioning block 411 is located on one side of the line connecting the center points of the first supporting shaft 440 and the second supporting shaft 450. When the opening and closing mold driving mechanism 320 drives the movable mold base 200 and the positioning support 300 to approach each other, the second pulling shaft 480 located on one side of the line connecting the center points of the first supporting shaft 440 and the second supporting shaft 450 can form a reliable pulling force, which can ensure the smoothness and reliability of the pulling action. The second pulling shaft 480 is further rotationally connected with the positioning block 411. Preferably, the first pulling linkage arm 430 positioning block 411 is located on the same side of the line connecting the center points of the first supporting shaft 440 and the second supporting shaft 450. The third supporting shaft 460 is rotationally connected with the fixed base 100. The line connecting the center points of the first supporting shaft 440 and the third supporting shaft 460 is parallel to the guide column 110, which can ensure the reliability of the supporting force formed when pushing the mold closed. The first pulling shaft 470 is coated with a first wear-resistant copper layer 471, and the second pulling shaft 480 is coated with a second wear-resistant copper layer 481. Preferably, the first wear-resistant copper layer 471 and the second wear-resistant copper layer 472 are both annular sleeve structures made of cast copper alloy, which can effectively reduce the friction between the first pulling shaft 470 and the positioning support 300 and the pulling linkage arm 430, and can effectively reduce the friction between the second pulling shaft 480 and the positioning block 411 and the pulling linkage arm 430. The friction received by the pulling linkage arm 430 when pulling is effectively weakened, which can effectively improve the smoothness of the operation of the pulling linkage arm 430, thereby improving the reliability of the opening and closing mold action.

[0044] The working process mainly includes two actions of opening and closing the mold.

[0045] During mold opening: The mold opening and closing drive mechanism 320 drives the moving mold base 200 to move closer to the positioning bracket 300, shortening the distance between the moving mold base 200 and the positioning bracket 300. The first pull shaft 470 synchronously forms a movement tendency to move closer to the moving mold base 200. The first pull shaft 470 and the first support shaft 440 move closer to each other. The pull linkage arm 430 rotates in a direction parallel to the guide post 110. Under the pull limiting action of the pull linkage arm 430, the second support shaft 450 moves away from the line connecting the first support shaft 440 and the third support shaft 460. The first support arm 410 and the second support arm 420 rotate along the second support shaft 450 and form an angle greater than 0 and less than 180°. At this time, the moving mold base 200 and the positioning bracket 300 synchronously move closer to the fixed seat 100, thereby realizing the mold opening action. The distance of the mold opening movement is greater than the driving distance of the mold opening and closing drive mechanism 320, which can effectively improve the mold opening stroke and make full use of the space outside the axial direction.

[0046] During mold closing: The mold opening and closing drive mechanism 320 drives the moving mold base 200 to move away from the positioning bracket 300, increasing the distance between the moving mold base 200 and the positioning bracket 300. Simultaneously, the first lifting shaft 470 forms a movement tendency that moves away from the moving mold base 200. The first lifting shaft 470 and the first support shaft 440 move away from each other. The lifting linkage arm 430 rotates in a direction perpendicular to the guide post 110. Under the lifting limiting action of the lifting linkage arm 430, the second support shaft 450 moves closer to the line connecting the first support shaft 440 and the third support shaft 460. The first support arm 410 and the second support arm 450... Arm 420 rotates along the second support shaft 450 to be aligned with the same straight line, which is parallel to the guide post 110. At this time, the moving mold base 200 and the positioning bracket 300 move synchronously away from the fixed base 100, thereby realizing the mold closing action. The supporting force of the moving mold base 200 comes from the positioning bracket 300 on one side. The supporting force of the fixed base 100 is applied to the positioning bracket 300 through the first arm 410 and the second arm 420, which are aligned with the same straight line. That is, the mold closing force is evenly distributed in the middle area of ​​the moving mold base 200 on the side close to the fixed base 100, which can effectively improve the stability and reliability of the mold closing action.

[0047] By adopting the structure of four guide columns 110 and four groups of guide sleeves, the stability and accuracy of the movable die seat 200 and the positioning support 300 in the mold opening and closing process are ensured, and a stable mechanical structure is formed by rotating the first support arm 410, the second support arm 420 and the pulling linkage arm 430 in the crankshaft assembly 400, which can provide smooth driving force in the mold opening and closing process. In particular, the positioning block 411 is arranged on one side of the first support shaft 440 and the second support shaft 450, which can stagger the pulling force of the pulling linkage arm 430 and the acting force between the first support arm 410 and the second support arm 420 to form an acting force for supporting and positioning. Compared with the traditional crankshaft structure, the linkage positioning structure not only can effectively ensure the smoothness and reliability of the pulling linkage first support arm 410 and the second support arm 420 in the mold opening process, but also can significantly reduce the structural damage caused by unsmooth movement, and can ensure the stability and reliability of the support effect of the first support arm 410 and the second support arm 420 on the movable die seat 200 in the mold closing support. The overall structure is stable and reliable in mold opening and closing action, the positioning effect is accurate, the production precision and production efficiency can be effectively improved, and the mold locking effect is stable and reliable. In addition, the movable die seat 200 is connected and fixed to the fixed seat 100 through the driving support 220 and the two crankshaft assemblies 400. When the mold is closed, the mold closing support force of the fixed seat 100 acts on the driving support 220 through the crankshaft assembly 400, and the mold closing support force is uniformly distributed in the middle region of the movable die seat 200 close to the fixed seat 100, so that the acting force on the mold can be effectively balanced, the mold closing effect is stable and reliable, the precision in production and processing is high, and the probability of deformation of the mold due to unbalanced force can be effectively reduced, the reliability in production and processing is high, and the service life of the applied mold is long.

[0048] At the same time, the ingenious design of the crankshaft assembly 400 enables the mold opening and closing driving mechanism 320 to more smoothly drive the movable die seat 200 to slide along the guide column 110, thereby greatly improving the positioning accuracy and stability. Compared with the traditional structure, the injection mold positioning structure has high precision and high stability, which can ensure the accuracy and consistency of the mold in the mold opening and closing process, thereby improving the production efficiency and product quality. This has important application value and economic significance for the mold manufacturing and injection molding industry. The crankshaft assembly 400 simultaneously utilizes the circumferential space other than the axial direction to realize mold opening, which can effectively improve the space utilization and the compact and reliable structure, and can effectively improve the mold opening stroke in a limited length space.

[0049] It can be understood that the side of the positioning support 300 close to the fixed seat 100 is provided with a mold closing positioning groove 301 for limiting the pulling linkage arm 430, one end of the pulling linkage arm 430 and the first pulling shaft 470 are located in the mold closing positioning groove 301, and the slot of the mold closing positioning groove 301 is opposite to the fixed seat 100.

[0050] During mold closing, the first arm 410 and the second arm 420 are collinear and parallel to the guide post 110. At this time, the lifting linkage arm 430 is perpendicular to the guide post 110. The mold closing positioning groove 301 can effectively limit and position the position of the lifting linkage arm 430. This is mainly achieved by the bottom of the mold closing positioning groove 301 abutting against one side of the lifting linkage arm 430 to prevent the lifting linkage arm 430 from rotating further. This can effectively improve the stability of the relative position between the first arm 410 and the second arm 420, thereby effectively improving the stability of the mold closing support force.

[0051] It is understandable that there are two mold opening and closing drive mechanisms 320, which are located on opposite sides of the central axis of the moving mold base 200, and two crankshaft assemblies 400 are located on the other two sides of the central axis of the moving mold base 200. By using different circumferential spaces to set up the mold opening and closing drive mechanisms 320 and crankshaft assemblies 400 respectively, the space utilization rate can be effectively improved, thereby further realizing a compact design. Moreover, this design can effectively disperse the force acting on the moving mold base 200, which can further improve the stability of the mold closing positioning action and achieve high mold closing accuracy.

[0052] It is understood that the drive bracket 220 is equipped with an ejector drive mechanism 230, and the drive end of the ejector drive mechanism 230 is connected to an ejector plate 240. The ejector plate 240 is located on the side of the moving mold base 200 near the fixed base 100. Preferably, an ejector pin is provided on one side of the ejector plate 240, and the fixed base 100 is provided with a top hole that matches the ejector pin, through which the ejector pin passes. Preferably, both the ejector drive mechanism 230 and the mold opening and closing drive mechanism 320 are configured as linear drive mechanisms such as hydraulic cylinders or pneumatic cylinders.

[0053] When the mold is opened, the ejector plate 240 is driven to move close to the fixed seat 100 by the ejector drive mechanism 230. The ejector pin passes through the ejector hole and protrudes from the side of the fixed seat 100 away from the fixed seat 100, thereby ejecting and demolding the mold.

[0054] Specifically, the ejector drive mechanism 230 is located between the two sets of crankshaft assemblies 400. For each set of crankshaft assemblies 400: the lifting linkage arm 430 is located on the side away from the ejector drive mechanism 230 from the line connecting the first support shaft 440 and the second support shaft 450. That is, the first lifting shaft 470 and the second lifting shaft 480 are both located on the side of the first support arm 410 away from the central axis of the moving mold base 200. When the mold is opened, the connection between the first support arm 410 and the second support arm 420 is bent outward, which can effectively improve the space utilization rate. The space left empty in the center can be used to install the ejector drive mechanism 230. The overall structure is stable and reliable, and the space utilization rate is high.

[0055] It can be understood that the first supporting arm 410 is provided with a limiting block 412 located at one side of the pulling linkage arm 430 close to the ejection driving mechanism 230, and the limiting block 412 can effectively limit the limit position of the pulling linkage arm 430 during the mold closing, thereby effectively limiting the limit position of the first supporting arm 410 and the second supporting arm 420 during the mold closing, effectively ensuring the stability of the mold closing position, and effectively ensuring the mold closing force.

[0056] The second aspect of the utility model discloses a mold closing device, referring to Figure 5 The first aspect of the utility model discloses an injection mold closing positioning structure.

[0057] It can be understood that the mold closing device further comprises a fixed mold base 500 arranged on the side of the movable mold base 200 away from the fixed base 100, one end of the four guide columns 110 is connected to the fixed mold base 500, and the fixed mold base 500 is used for connecting the mold.

[0058] Specifically, the fixed base 100 is rotatably connected with a gear ring 120 and four gear wheels 130 on the side away from the movable mold base 200, the four gear wheels 130 are all meshingly connected with the gear ring 120, and the four gear wheels 130 are respectively threadedly connected with one end of the four guide columns 110 away from the fixed mold base 500.

[0059] When the gear ring 120 rotates, the four gear wheels 130 can be synchronously driven to rotate, thereby driving the gear wheels 130 to rotate relative to the guide columns 110, the relative position between the guide columns 110 and the gear wheels 130 can be adjusted, the relative position between the fixed mold base 500 and the fixed base 100 can be further adjusted, and different molds can be effectively adapted.

[0060] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. An injection mold clamp positioning structure, characterized by, The utility model relates to a mould closing and opening device, including: The one side of fixed seat (100) is equipped with four guide columns (110); Movable die holder (200) is equipped in one side of fixed seat (100), and movable die holder (200) is equipped with four first guide sleeves (210) that four guide columns (110) are respectively covered, and movable die holder (200) is equipped with drive support (220) near the center of one side of fixed seat (100), Positioning support (300) is equipped between movable die holder (200) and fixed seat (100), and positioning support (300) is equipped with four second guide sleeves (310) that four guide columns (110) are respectively covered, and positioning support (300) is also equipped with at least two opening and closing mould drive mechanisms (320) that are about the center axis symmetry of movable die holder (200), and movable die holder (200) is connected to the drive end of opening and closing mould drive mechanism (320), Crankshaft assembly (400) is equipped with two groups and is about the center axis symmetry of movable die holder (200), and crankshaft assembly (400) includes first branch (410), second branch (420), pull linkage arm (430), first support shaft (440), second support shaft (450), third support shaft (460), first pull shaft (470) and second pull shaft (480), and the opposite ends of first branch (410) are rotatably connected with first support shaft (440) and second support shaft (450) respectively, the opposite ends of second branch (420) are rotatably connected with second support shaft (450) and third support shaft (460) respectively, the opposite ends of pull linkage arm (430) are rotatably connected with first pull shaft (470) and second pull shaft (480) respectively, first support shaft (440) is rotatably connected with drive support (220), first pull shaft (470) is rotatably connected with positioning support (300), one side of first branch (410) is equipped with positioning block (411), and positioning block (411) is located on the one side of the connecting line of first support shaft (440) and second support shaft (450), second pull shaft (480) is rotatably connected with positioning block (411), third support shaft (460) is rotatably connected with fixed seat (100), and the connecting line of first support shaft (440) and third support shaft (460) is parallel with guide column (110), first pull shaft (470) is coated with first wear-resistant copper layer (471), and second pull shaft (480) is coated with second wear-resistant copper layer (481).

2. A mold clamp positioning structure according to claim 1, wherein The one side of positioning support (300) near fixed seat (100) is equipped with closing mould positioning groove (301), and one end of pull linkage arm (430) is located in closing mould positioning groove (301).

3. The injection mold clamping positioning structure of claim 1 wherein, Two opening and closing mold driving mechanisms (320) are arranged on opposite sides of the center axis of the movable mold base (200), and two crankshaft assemblies (400) are arranged on the other two sides of the center axis of the movable mold base (200).

4. The injection mold clamping positioning structure of claim 1 wherein, The driving support (220) is provided with a stripping driving mechanism (230), and the driving end of the stripping driving mechanism (230) is connected with a stripping plate (240), which is arranged on the side of the movable mold base (200) close to the fixed base (100).

5. A mold clamp structure according to claim 4 wherein, The stripping driving mechanism (230) is arranged between the two groups of crankshaft assemblies (400), and the first pulling shaft (470) and the second pulling shaft (480) are arranged on the side of the first supporting arm (410) away from the center axis of the movable mold base (200).

6. A mold clamp structure according to claim 5 wherein, The first supporting arm (410) is provided with a limiting block (412), which is arranged on the side of the pulling linkage arm (430) close to the stripping driving mechanism (230).

7. A clamp apparatus characterized by comprising: The injection mold clamping positioning structure also comprises a fixed mold base (500) arranged on the side of the movable mold base (200) away from the fixed base (100), and one end of the four guide columns (110) is connected to the fixed mold base (500).

8. A clamp apparatus according to claim 7, wherein The side of the fixed base (100) away from the movable mold base (200) is rotationally connected with a gear ring (120) and four gear wheels (130), the four gear wheels (130) are in meshing connection with the gear ring (120), and the four gear wheels (130) are respectively in threaded connection with the one ends of the four guide columns (110) away from the fixed mold base (500).

9. A clamp apparatus according to claim 8, wherein ​

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