Die opening and closing driving mechanism

Abstract

The utility model discloses a mold opening and closing driving mechanism, belongs to the technical field of transmission structures, and is used for providing a mold opening and closing driving mechanism with higher adaptation flexibility, the mold opening and closing driving mechanism comprises a hydraulic cylinder, a movable mold and a tailstock, a force application assembly is arranged between the movable mold and the tailstock, and the force application assembly comprises a first linkage plate, a second linkage plate, a first traction plate and a second traction plate; the first linkage plate is rotationally connected with the upper end of the second linkage plate, the lower end of the first linkage plate is rotationally connected with the movable mold, the lower end of the second linkage plate is rotationally connected with the tailstock, the upper end of the first traction plate is rotationally connected with the movable mold, and the upper end of the second traction plate is rotationally connected with the tailstock. The lower ends of the first traction plate and the second traction plate are jointly connected with the movable end of the hydraulic cylinder through a linkage piece. According to the driving mechanism, the linkage piece with the multiple insertion holes is arranged between the power source and the force application assembly, so that the maximum control stroke of the driving mechanism is adjustable, and the stepless adjusting capacity of the power source is matched, so that the adjusting flexibility of the whole driving mechanism is higher.

Description

Technical Field

[0001] This application relates to the technical field of transmission structures, and particularly to a mold-closing and mold-opening driving mechanism. Background Art

[0002] An injection mold is one of the important devices for modern industrial product production. It includes multiple functional mechanisms. Among them, there are various forms of driving mechanisms for mold closing and mold opening, and multiple groups of connecting rods are mostly used to shorten the stroke of the driver. However, most of the existing mold-closing and mold-opening driving mechanisms are for one machine and one use. That is to say, the power source and transmission components of the driving mechanism are determined and can only work in one type of injection molding machine. It is also possible to adapt to other types of injection molding machines by adjusting the stroke of the power source, but the adaptable range is very limited. Summary of the Invention

[0003] The purpose of this application is to provide a mold-closing and mold-opening driving mechanism with higher adaptability flexibility.

[0004] To achieve the above purpose, this application provides a mold-closing and mold-opening driving mechanism: including a hydraulic cylinder, a moving mold, and a tailstock. A force application component is arranged between the moving mold and the tailstock. The force application component includes a first linkage plate, a second linkage plate, a first traction plate, and a second traction plate. The upper ends of the first linkage plate and the second linkage plate are rotatably connected. The lower end of the first linkage plate is rotatably connected to the moving mold. The lower end of the second linkage plate is rotatably connected to the tailstock. The upper end of the first traction plate is rotatably connected to the moving mold. The upper end of the second traction plate is rotatably connected to the tailstock. The lower ends of the first traction plate and the second traction plate are jointly connected to the movable end of the hydraulic cylinder through a linkage member. The linkage member is rotatably connected to the lower end of the first traction plate or the second traction plate through a stroke adjustment member, suitable for adjusting the distance between the lower ends of the first traction plate and the second traction plate. The linkage member is inserted and connected to the movable end of the hydraulic cylinder through a position adjustment member, suitable for adjusting the distance of the linkage member relative to the top of the movable end of the hydraulic cylinder, and adapting to more types of injection molding machines in a larger range.

[0005] As a preference, the linkage member includes a sleeve. The sleeve has an insertion hole penetrating the upper and lower end faces. A second pin hole penetrating the insertion hole is opened on the outer side surface of the sleeve. The hydraulic cylinder includes a cylinder barrel. A telescopic rod is inserted at the upper end of the cylinder barrel, suitable for passing through the insertion hole. A plurality of inner pin holes are arranged along the length direction on the telescopic rod. The position adjustment member is suitable for passing through the second pin hole and being inserted and combined with any one of the inner pin holes, reserving a plurality of insertion positions, and can more flexibly adjust the starting position of the moving mold.

[0006] As a preference, a base is fixedly connected to the bottom of the cylinder barrel. The end of the position adjustment member is located outside the sleeve and is provided with a second finger buckle groove, which is convenient for disassembling and assembling the position adjustment member.

[0007] As a preference, the sleeve has a single plate and a double plate on opposite outer sides respectively, and a plurality of first pin holes arranged along the length direction are formed on both the single plate and the double plate; a first lower shaft hole is formed at the lower end of the first traction plate, and a second lower shaft hole is formed at the lower end of the second traction plate; there are two stroke adjusting members, and the main body part of each stroke adjusting member is a pin shaft, and the pin shaft passes through the first lower shaft hole or the second lower shaft hole and is inserted into the first pin hole to form a rotating pair, ensuring the freedom of movement of the traction plate relative to the linkage member.

[0008] As a preference, one end of the pin shaft has a retaining ring, a handle is formed on the end face of the retaining ring, and a first finger buckle groove is formed on the handle; a weight reduction groove is formed on the double plate, which can effectively balance the center of gravity position.

[0009] As a preference, a first upper clamping block and a first lower clamping block are fixedly connected to the back surface of the moving mold. A first upper shaft body is formed on the end face of the first upper clamping block, and a first lower shaft body is formed on the end face of the first lower clamping block. A left shaft hole is formed at the lower end of the first linkage plate and is adapted to cooperate with the first upper shaft body to form a rotating pair. A first upper shaft hole is formed at the upper end of the first traction plate and is adapted to cooperate with the first lower shaft body to form a rotating pair; a second upper clamping block and a second lower clamping block are fixedly connected to the front surface of the tailstock. A second upper shaft body is formed on the end face of the second upper clamping block, and a second lower shaft body is formed on the end face of the second lower clamping block. A right shaft hole is formed at the lower end of the second linkage plate and is adapted to cooperate with the second upper shaft body to form a rotating pair. A second upper shaft hole is formed at the upper end of the second traction plate and is adapted to cooperate with the second lower shaft body to form a rotating pair, so that the four components of the force application assembly enclose a retractable quadrilateral.

[0010] As a preference, the upper ends of the first linkage plate and the second linkage plate are rotatably connected by a hinge shaft, which plays a role of mutual restraint and is a necessary condition for enclosing a stable movable quadrilateral.

[0011] As a preference, a guide rod is fixedly connected to the front surface of the tailstock, a guide hole is formed on the moving mold and is adapted to be inserted into the guide rod to form a sliding pair, and a limit ring is fixedly connected after the end of the guide rod passes through the guide hole; a connection hole is also formed on the tailstock for a connecting member such as a bolt to pass through to fix the whole mechanism on the frame of the injection molding equipment.

[0012] Compared with the prior art, the beneficial effects of the present application are as follows:

[0013] (1) By setting a linkage member with multiple insertion holes between the power source and the force - applying components, the maximum control stroke of the drive mechanism can be adjusted, enabling it to adapt to a wider range of machine models. Coupled with the stepless adjustment ability of the power source itself, the adjustment flexibility of the entire drive mechanism is higher.

[0014] (2) Since the transmission between the linkage member, the power source, and the force - applying components is achieved through plug - in connections, disassembly and assembly are more convenient, and the efficiency is higher when conducting adaptation debugging for new machine models. On the other hand, the stroke of the hydraulic cylinder does not need to be adjusted, making the configuration and control simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three - dimensional schematic diagram of the overall structure of the mold - opening and closing drive mechanism.

[0016] Figure 2 It is a three - dimensional structural schematic diagram of the connection between the two traction plates of the mold - opening and closing drive mechanism and the hydraulic cylinder.

[0017] Figure 3 It is a three - dimensional structural schematic diagram of the first traction plate of the mold - opening and closing drive mechanism.

[0018] Figure 4 It is a three - dimensional structural schematic diagram of the second traction plate of the mold - opening and closing drive mechanism.

[0019] Figure 5 It is a three - dimensional structural schematic diagram of the linkage member of the mold - opening and closing drive mechanism.

[0020] Figure 6 It is a three - dimensional structural schematic diagram of the force - applying components of the mold - opening and closing drive mechanism.

[0021] Figure 7 It is a three - dimensional structural schematic diagram of the stroke adjustment member of the mold - opening and closing drive mechanism.

[0022] Figure 8 It is a three - dimensional structural schematic diagram of the position adjustment member of the mold - opening and closing drive mechanism.

[0023] Figure 9 It is a three - dimensional structural schematic diagram of the connection between the two linkage plates of the mold - opening and closing drive mechanism.

[0024] Figure 10 It is a three - dimensional structural schematic diagram of the guide rod of the mold - opening and closing drive mechanism.

[0025] Figure 11 It is a three - dimensional structural schematic diagram of the moving mold of the mold - opening and closing drive mechanism.

[0026] Figure 12 It is a three - dimensional structural schematic diagram of the tailstock of the mold - opening and closing drive mechanism.

[0027] In the figure: 1. Guide rod; 101. Limit ring; 2. Hydraulic cylinder; 201. Cylinder barrel; 202. Telescopic rod; 203. Base; 204. Inner pin hole; 3. Moving die; 301. First upper clamping block; 302. First lower clamping block; 303. First upper shaft body; 304. First lower shaft body; 305. Guide hole; 4. Tailstock; 401. Second upper clamping block; 402. Second lower clamping block; 403. Second upper shaft body; 404. Second lower shaft body; 405. Connecting hole; 5. Linkage member; 501. Single plate; 502. Double plate; 503. First pin hole; 504. Load reduction groove; 505. Sleeve; 506. Insertion hole; 507. Second pin hole; 6. Force application assembly; 610. First linkage plate; 611. Left shaft hole; 620. Second linkage plate; 621. Right shaft hole; 630. First traction plate; 631. First upper shaft hole; 632. First lower shaft hole; 640. Second traction plate; 641. Second upper shaft hole; 642. Second lower shaft hole; 7. Stroke adjustment member; 701. Pin shaft; 702. Retaining ring; 703. Handle; 704. First finger buckle groove; 8. Position adjustment member; 801. Second finger buckle groove; 9. Hinge shaft. Detailed implementation manners

[0028] Next, in combination with the detailed implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0029] In the description of the present application, it should be noted that for the orientation terms, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationships are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0031] The terms "including" and "having" and any variations thereof in the description and claims of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] As shown Figures 1-12 in the parting and combining mold driving mechanism, which includes a hydraulic cylinder 2, a moving mold 3 and a tailstock 4. When the tailstock 4 is fixedly arranged, the hydraulic cylinder 2 needs to have a degree of freedom to slide in the horizontal direction. A force application component 6 is arranged between the moving mold 3 and the tailstock 4. The force application component 6 includes four main parts: a first linkage plate 610, a second linkage plate 620, a first traction plate 630 and a second traction plate 640. Among them, the first linkage plate 610 and the second linkage plate 620 have the same length, and the first traction plate 630 and the second traction plate 640 have the same length. The upper ends of the first linkage plate 610 and the second linkage plate 620 are rotatably connected. The right end of the first linkage plate 610 and the left end of the second linkage plate 620 are higher and defined as the upper ends. Actually, the upper ends of the first linkage plate 610 and the second linkage plate 620 are rotatably connected by a horizontal hinge shaft 9.

[0033] A guide rod 1 is fixedly connected to the front surface of the tailstock 4. Generally, four guide rods 1 are arranged, which are respectively located at the four corners of the front surface of the tailstock 4, and each guide rod 1 is perpendicular to the vertical plane where the tailstock 4 is located. Corresponding guide holes 305 are opened on the moving mold 3. The guide holes 305 penetrate the front and back surfaces of the moving mold 3 and are just inserted with the guide rods 1 to form a sliding pair. After the end of the guide rod 1 passes through the guide hole 305, a limit ring 101 is fixedly connected to prevent the moving mold 3 from disengaging from the end of the guide rod 1. A connection hole 405 is also opened on the tailstock 4 for bolts and other connecting pieces to pass through to fix the tailstock 4 on the frame of the injection mold.

[0034] The lower end of the first linkage plate 610 is rotatably connected to the moving mold 3, and the upper end of the first traction plate 630 is also rotatably connected to the moving mold 3. Specifically: A first upper clamping block 301 and a first lower clamping block 302 are fixedly connected to the back surface of the moving mold 3. The two have the same structure. The first upper clamping block 301 is located above the first lower clamping block 302. The end surface of the first upper clamping block 301 has two first upper shafts 303 with horizontal axes and the two are coaxial. The end surface of the first lower clamping block 302 has two first lower shafts 304 with horizontal axes and the two are coaxial. A left shaft hole 611 is opened at the lower end of the first linkage plate 610 for cooperating with the first upper shaft 303 to form a rotating pair. A first upper shaft hole 631 is opened at the upper end of the first traction plate 630 for cooperating with the first lower shaft 304 to form a rotating pair. Separated hinges can reduce the interference of relative movement.

[0035] The lower end of the second linkage plate 620 is rotatably connected to the tailstock 4, and the upper end of the second traction plate 640 is also rotatably connected to the tailstock 4. Specifically: on the front surface of the tailstock 4, a second upper clamping block 401 and a second lower clamping block 402 are fixedly connected. The two have the same structure. The second upper clamping block 401 is located above the second lower clamping block 402. The end face of the second upper clamping block 401 has two second upper shafts 403 with horizontal axes and the two are coaxial. The end face of the second lower clamping block 402 has two second lower shafts 404 with horizontal axes and the two are coaxial. A right shaft hole 621 is provided at the lower end of the second linkage plate 620 for cooperating with the second upper shaft 403 to form a rotating pair. A second upper shaft hole 641 is provided at the upper end of the second traction plate 640 for cooperating with the second lower shaft 404 to form a rotating pair. The hinged manner with the moving mold 3 is the same, making the relative movement smoother and facilitating the inspection, maintenance, and replacement of components.

[0036] The hydraulic cylinder 2 is usually located below the force application assembly 6. The lower ends of the first traction plate 630 and the second traction plate 640 are jointly connected to the movable end of the hydraulic cylinder 2 through a linkage member 5. The hydraulic cylinder 2 includes a vertical cylinder barrel 201. A base 203 is fixedly connected to the bottom of the cylinder barrel 201. The base 203 can cooperate with the track at the bottom of the injection mold housing to form a sliding pair to ensure that the hydraulic cylinder 2 has sufficient movement ability when driving the force application assembly 6.

[0037] The linkage member 5 is inserted and connected to the movable end of the hydraulic cylinder 2 through a position adjusting member 8, and the distance of the linkage member 5 relative to the top of the movable end of the hydraulic cylinder 2 can be adjusted. The specific structure of the linkage member 5 includes a sleeve 505 in the center. The sleeve 505 has an insertion hole 506 penetrating the upper and lower end faces. A second pin hole 507 penetrating the insertion hole 506 is provided on the outer side surface of the sleeve 505. There are two second pin holes 507 with the same extending direction and symmetrically arranged. A telescopic rod 202 is inserted into the upper end of the cylinder barrel 201 and can pass through the insertion hole 506. Since the telescopic rod 202 is a vertical polygon, the linkage member 5 after cooperation with the telescopic rod 202 can neither swing in the vertical plane nor rotate in the horizontal plane. A number of internal pin holes 204 are provided on the telescopic rod 202, and the number of internal pin holes 204 is equally spaced along the length direction of the telescopic rod 202. The cross-sectional shape of the internal pin hole 204 is the same as that of the insertion hole 506. The long plate-shaped position adjusting member 8 can pass through the second pin hole 507 and be inserted into any one of the internal pin holes 204. In fact, the position adjusting member 8 will be inserted into two second pin holes 507 simultaneously, having better installation stability. Therefore, the end of the position adjusting member 8 is located outside the sleeve 505 and a second finger buckle groove 801 is provided, which is convenient for applying a horizontal force for inserting or pulling out the position adjusting member 8 with fingers or tools.

[0038] The linkage member 5 is rotatably connected to the lower end of the first traction plate 630 or the second traction plate 640 through the stroke adjusting member 7, and the distance between the lower ends of the first traction plate 630 and the second traction plate 640 can be adjusted. The sleeve 505 has a single plate 501 and a double plate 502 on a pair of opposite outer sides respectively. A number of first pin holes 503 are arranged along the length direction on both the single plate 501 and the double plate 502. Since the front and rear width of the double plate 502 is wider, a relief groove 504 is usually provided on the double plate 502 to balance the gravity and make the center of gravity of the entire linkage member 5 fall within the sleeve 505. In order to achieve the rotational connection, a first lower shaft hole 632 is provided at the lower end of the first traction plate 630, and a second lower shaft hole 642 is provided at the lower end of the second traction plate 640. The right end of the first traction plate 630 and the left end of the second traction plate 640 are both the lower ends, defined as the lower ends. There are two stroke adjusting members 7, which are used to cooperate with the first traction plate 630 and the second traction plate 640 respectively. The main body part of each stroke adjusting member 7 is a cylindrical pin shaft 701. The pin shaft 701 passes through the first lower shaft hole 632 or the second lower shaft hole 642 and is inserted into the first pin hole 503 to form a rotating pair. Thus, the four plate members of the force application assembly 6 form a telescopic quadrilateral structure, and drive the moving mold 3 to slide relative to the guide rod 1 through deformation. One end of the pin shaft 701 has a retaining ring 702 to limit the maximum insertion depth of the pin shaft 701. A handle 703 is provided on the end face of the retaining ring 702, and a first finger buckle groove 704 is provided on the handle 703, which is convenient to pinch the handle 703 with hands or tools to insert or pull out the entire stroke adjusting member 7.

[0039] Working principle: Since the tailstock 4 is fixed, the heights of the guide rod 1 and the moving mold 3 cannot be changed. Therefore, when the hydraulic cylinder 2 with the constant height of the cylinder barrel 201 performs telescopic movement, the vertical width of the force application assembly 6 will change, and at the same time, the horizontal width of the force application assembly 6 will also change synchronously, thereby driving the moving mold 3 to perform the mold closing and mold opening actions. When the telescopic stroke of the hydraulic cylinder 2 remains unchanged, the stroke of the moving mold 3 can be changed by adjusting the insertion positions of the two stroke adjusting members 7 and the linkage member 5, and the initial position of the moving mold 3 can be changed by adjusting the insertion positions of the position adjusting member 8 and the telescopic rod 202. Of course, the adjustment of the position adjusting member 8 will also affect the maximum stroke of the moving mold 3.

[0040] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A mold splitting and closing driving mechanism, characterized in that: The invention comprises a hydraulic cylinder (2), a movable mold (3) and a tailstock (4); a force-applying assembly (6) is arranged between the movable mold (3) and the tailstock (4); the force-applying assembly (6) comprises a first linkage plate (610), a second linkage plate (620), a first traction plate (630) and a second traction plate (640); the first linkage plate (610) and the upper ends of the second linkage plate (620) are rotatably connected; the lower end of the first linkage plate (610) is rotatably connected to the movable mold (3); the lower end of the second linkage plate (620) is rotatably connected to the tailstock (4); the upper end of the first traction plate (630) is rotatably connected to the movable mold (3); the second traction plate (640) The upper end of the first traction plate (630) and the second traction plate (640) are rotatably connected to the tailstock (4); the lower ends of the first traction plate (630) and the second traction plate (640) are connected to the movable end of the hydraulic cylinder (2) through a linkage member (5); the linkage member (5) is rotatably connected to the lower end of the first traction plate (630) or the second traction plate (640) through a stroke adjustment member (7), and is suitable for adjusting the distance between the lower ends of the first traction plate (630) and the second traction plate (640); the linkage member (5) is plug-connected to the movable end of the hydraulic cylinder (2) through a position adjustment member (8), and is suitable for adjusting the distance of the linkage member (5) relative to the top of the movable end of the hydraulic cylinder (2).

2. The mold splitting and clamping driving mechanism according to claim 1, characterized in that: The linkage member (5) comprises a sleeve (505), the sleeve (505) having an insertion hole (506) passing through the upper and lower end surfaces, and the outer side surface of the sleeve (505) is provided with a second pin hole (507) passing through the insertion hole (506); the hydraulic cylinder (2) comprises a cylinder barrel (201), the upper end of the cylinder barrel (201) is plugged with a telescopic rod (202) suitable for passing through the insertion hole (506), the telescopic rod (202) is provided with a plurality of inner pin holes (204) arranged along the length direction, and the position adjustment member (8) is suitable for passing through the second pin hole (507) and plugging with any of the inner pin holes (204).

3. The mold splitting and closing driving mechanism according to claim 2, characterized in that: The bottom of the cylinder (201) is fixedly connected to a base (203); the end of the position adjustment member (8) is located outside the sleeve (505) and is provided with a second finger-locking groove (801).

4. The mold splitting and closing driving mechanism according to claim 2, characterized in that: The sleeve (505) has a single plate (501) and a double plate (502) on opposite outer sides, and the single plate (501) and the double plate (502) are both provided with a plurality of first pin holes (503) arranged along the length direction; the lower end of the first traction plate (630) is provided with a first lower shaft hole (632), and the lower end of the second traction plate (640) is provided with a second lower shaft hole (642); there are two stroke adjustment members (7), and the main body of each of the stroke adjustment members (7) is a pin shaft (701), and the pin shaft (701) passes through the first lower shaft hole (632) or the second lower shaft hole (642) and is inserted into the first pin hole (503) to form a rotating pair.

5. The mold opening and closing driving mechanism according to claim 4, characterized in that: One end of the pin shaft (701) is provided with a retaining ring (702), the end surface of the retaining ring (702) is provided with a handle (703), and the handle (703) is provided with a first finger buckle groove (704); the double plate (502) is provided with a load-reducing groove (504).

6. The mold splitting and closing driving mechanism according to any one of claims 1 to 5, characterized in that: The back side of the movable mold (3) is fixedly connected with a first upper clamping block (301) and a first lower clamping block (302); the end surface of the first upper clamping block (301) has a first upper shaft body (303); the end surface of the first lower clamping block (302) has a first lower shaft body (304); the lower end of the first linkage plate (610) is provided with a left shaft hole (611), which is suitable for cooperating with the first upper shaft body (303) to form a rotating pair; the upper end of the first traction plate (630) is provided with a first upper shaft hole (631), which is suitable for cooperating with the first lower shaft body (304) to form a rotating pair; The front side of the tailstock (4) is fixedly connected with a second upper clamping block (401) and a second lower clamping block (402); the end face of the second upper clamping block (401) has a second upper shaft body (403); the end face of the second lower clamping block (402) has a second lower shaft body (404); the lower end of the second linkage plate (620) is provided with a right shaft hole (621) suitable for cooperating with the second upper shaft body (403) to form a rotating pair; the upper end of the second traction plate (640) is provided with a second upper shaft hole (641) suitable for cooperating with the second lower shaft body (404) to form a rotating pair.

7. The mold opening and closing driving mechanism according to claim 6, characterized in that: The upper ends of the first linkage plate (610) and the second linkage plate (620) are rotatably connected via a hinge shaft (9).

8. The mold splitting and closing driving mechanism according to any one of claims 1 to 5, characterized in that: The front side of the tailstock (4) is fixedly connected to a guide rod (1); the movable mold (3) is provided with a guide hole (305) suitable for being inserted into the guide rod (1) to form a sliding pair; the end of the guide rod (1) is fixedly connected to a limit ring (101) after passing through the guide hole (305); the tailstock (4) is also provided with a connecting hole (405).

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