Clamp shaft dog mechanism for injection molding machine
By using a clamping shaft brake mechanism to synchronously brake the clamping columns of the injection molding machine, the complexity and high cost of equipment caused by multiple clamping column braking devices in the existing technology are solved, thus simplifying the equipment structure and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN JIEYANG MASCH CO LTD
- Filing Date
- 2024-08-01
- Publication Date
- 2026-05-29
Smart Images
Figure CN224296503U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of injection molding machine technology, and in particular relates to a clamping shaft brake mechanism for injection molding machines. Background Technology
[0002] Injection molding machines are a type of molding equipment that uses plastic molds to form various shapes of plastic products from thermoplastic or thermosetting plastics. They are classified as vertical, horizontal, and all-electric. Injection molding machines heat the plastic and apply high pressure to the molten plastic, causing it to be injected and fill the mold cavity. During operation, injection molding machines require a material platform to transport the raw materials, thus facilitating processing by the operators.
[0003] Injection molding machines involve mold opening and closing operations. During these operations, the mold clamping pillars need to be braked to prevent them from moving when the mold is fully open or closed. Larger injection molding machines may involve multiple mold clamping pillars. If each pillar were to be secured with a separate braking device, it would inevitably complicate the machine further and increase production costs. Utility Model Content
[0004] The purpose of this utility model is to provide a clamping shaft brake mechanism for an injection molding machine, which aims to achieve synchronous clamping and braking of two clamping shafts. When applied to an injection molding machine, it can simplify the equipment structure and reduce costs.
[0005] To achieve the above objectives, this utility model provides a clamping shaft brake mechanism for an injection molding machine, comprising a brake cylinder, a first brake nut, a second brake nut, a first pull rod, and a second pull rod;
[0006] The first brake nut includes a first outer half nut and a first inner half nut for clamping one mold clamping column, and the second brake nut includes a second outer half nut and a second inner half nut for clamping another mold clamping column;
[0007] The brake cylinder is arranged horizontally and is connected and fixed to the first inner half nut, and the piston rod of the brake cylinder is connected and fixed to the second inner half nut.
[0008] The first pull rod is horizontally positioned and one end is connected and fixed to the first inner half nut, while the other end passes through the second inner half nut and is connected and fixed to the second outer half nut.
[0009] The second pull rod is horizontally positioned, with one end connected and fixed to the second inner half nut, and the other end passing through the first inner half nut and then connected and fixed to the first outer half nut.
[0010] Optionally, the clamping shaft brake mechanism of the injection molding machine further includes a linkage hinge, which includes a first hinge, a second hinge, a rotating block, and a hinge pin. The hinge pin is centrally positioned with the first inner half nut and the second inner half nut. The rotating block is rotatably connected to the hinge pin. The two ends of the first hinge are respectively hinged to one end of the rotating block and the first inner half nut, and the two ends of the second hinge are respectively hinged to the other end of the rotating block and the second inner half nut.
[0011] Optionally, the linkage further includes a bearing, the inner ring of which is connected to the hinge pin, and the outer ring of which is connected to the shaft hole of the rotating block.
[0012] Optionally, there are two first tie rods, which are located diagonally opposite each other in the space between the first brake nut and the second brake nut.
[0013] There are two second tie rods, which are located diagonally opposite each other in the space where the first brake nut and the second brake nut are arranged.
[0014] Optionally, the clamping shaft brake mechanism of the injection molding machine further includes a first guide block and a second guide block. The first guide block is disposed on one side of the first brake nut and slides in cooperation with the first outer half nut and the first inner half nut. The second guide block is disposed on one side of the second brake nut and slides in cooperation with the second outer half nut and the second side half nut.
[0015] Optionally, two of each of the first guide blocks and the second guide blocks are provided. The two first guide blocks are slidably connected to the opposite sides of the first outer half nut and the first inner half nut, respectively; the two second guide blocks are slidably connected to the opposite sides of the second outer half nut and the second inner half nut, respectively.
[0016] Optionally, the clamping shaft brake mechanism of the injection molding machine further includes a first pad and a second pad, the first guide block is connected and fixed to the first pad, the first outer half nut and the first inner half nut both abut against the upper surface of the first pad, the second guide block is connected and fixed to the second pad, the second outer half nut and the second inner half nut both abut against the upper surface of the second pad.
[0017] The clamping shaft brake mechanism of the injection molding machine provided in this utility model embodiment has at least one of the following technical effects: During operation, the piston rod of the brake cylinder extends outwards and transmits power to the first and second inner half-nuts arranged on the left and right sides, respectively closing towards the first and second inner half-nuts. Simultaneously, under the action of the first and second pull rods, the second outer half-nut and the first outer half-nut are pulled towards the second inner half-nut and the first inner half-nut, respectively. This achieves synchronous control of the first outer half-nut and the first inner half-nut closing to lock one of the clamping pillars, and the second outer half-nut and the second inner half-nut closing to lock the other clamping pillar, thereby achieving brake braking of the clamping pillars and simultaneously controlling the two clamping pillars to remain stationary, ensuring the safe and reliable opening or closing of the injection molding machine. Furthermore, because one brake mechanism achieves brake braking control of two clamping pillars, when this utility model is applied to an injection molding machine, it simplifies the equipment structure and reduces costs. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A schematic diagram of the clamping shaft brake mechanism of an injection molding machine provided in this embodiment of the utility model. Figure 1 .
[0020] Figure 2 A schematic diagram of the clamping shaft brake mechanism of an injection molding machine provided in this embodiment of the utility model. Figure 2 .
[0021] Figure 3 This is an exploded view of the mold clamping shaft brake mechanism of the injection molding machine provided in an embodiment of the present invention.
[0022] Figure 4 This is a partial sectional view of the clamping shaft brake mechanism of the injection molding machine provided in an embodiment of the present utility model.
[0023] Figure 5 A top view of the clamping shaft brake mechanism of the injection molding machine provided in this embodiment of the utility model.
[0024] The following are the labeling elements in the figure:
[0025] 10—Brake cylinder; 20—First brake nut; 21—First outer half nut
[0026] 22—First inner half nut; 30—Second brake nut; 31—Second outer half nut
[0027] 32—Second inner half nut; 40—First tie rod; 50—Second tie rod
[0028] 60—Linked hinge; 61—First hinge; 62—Second hinge
[0029] 63—Rotating block; 64—Hinge pin; 65—Bearing
[0030] 70—First guide block; 80—Second guide block; 90—First pad block
[0031] 100—Second pad block; 200—Mold closing column. Detailed Implementation
[0032] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figures 1-5 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.
[0033] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0035] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.
[0036] In one embodiment of this utility model, such as Figures 1-5 As shown, a clamping shaft brake mechanism for an injection molding machine is provided, which is applicable to injection molding machines. It includes a brake cylinder 10, a first brake nut 20, a second brake nut 30, a first pull rod 40, and a second pull rod 50.
[0037] The first brake nut 20 includes a first outer half nut 21 and a first inner half nut 22 for clamping one mold clamping column 200, and the second brake nut 30 includes a second outer half nut 31 and a second inner half nut 32 for clamping another mold clamping column 200.
[0038] The brake cylinder 10 is horizontally arranged and fixed to the first inner half-nut 22, and the piston rod of the brake cylinder 10 is fixed to the second inner half-nut 32. Thus, when the piston rod of the brake cylinder 10 extends or retracts, it can simultaneously drive the first inner half-nut 22 and the second inner half-nut 32.
[0039] Furthermore, the first pull rod 40 is horizontally positioned, with one end connected and fixed to the first inner half-nut 22, and the other end passing through the second inner half-nut 32 and then connected and fixed to the second outer half-nut 31. In this embodiment, the first pull rod 40 passing through the second inner half-nut 32 means that the first pull rod 40 can move relative to the second inner half-nut 32. Thus, after the first pull rod 40 passes through the second inner half-nut 32, it can freely pull the second outer half-nut 31 without being interfered with by the second inner half-nut 32.
[0040] Furthermore, the second pull rod 50 is horizontally positioned, with one end connected and fixed to the second inner half-nut 32, and the other end passing through the first inner half-nut 22 and then connected and fixed to the first outer half-nut 21. In this embodiment, the second pull rod 50 passing through the first inner half-nut 22 means that the first pull rod 40 can move relative to the second inner half-nut 32. Thus, after the second pull rod 50 passes through the first inner half-nut 22, it can freely pull the first outer half-nut 21 without being interfered with by the first inner half-nut 22.
[0041] In this embodiment of the injection molding machine, the clamping shaft brake mechanism extends outwards during operation. This transmits power to the first inner half nut 22 and the second inner half nut 32 arranged on the left and right sides, respectively, to close towards the first inner half nut 22 and the second inner half nut 32. Simultaneously, under the action of the first pull rod 40 and the second pull rod 50, the second outer half nut 31 and the first outer half nut 21 are pulled to close towards the second inner half nut 32 and the first inner half nut 22, respectively. This achieves synchronous control of the first outer half nut 21 and the first inner half nut 22 to close and lock one of the clamping shafts 200, and the second outer half nut 31 and the second inner half nut 32 to close and lock the other clamping shaft 200. This achieves brake braking of the clamping shafts 200 and simultaneously controls the two clamping shafts 200 to remain stationary, ensuring the safe and reliable opening or closing of the injection molding machine. Furthermore, because a single brake mechanism enables brake control of the two mold clamping columns 200, when this invention is applied to an injection molding machine, it can simplify the equipment structure and reduce costs.
[0042] It should be noted that when the piston rod of the brake cylinder 10 retracts inward, the principle is the same as when the piston rod extends outward. At this time, the first inner half nut 22 and the second inner half nut 32 move in opposite directions, and the first outer half nut 21 and the second outer half nut 31 move in opposite directions. This causes the first inner half nut 22 and the first outer half nut 21 to open up the clamping of the mold column 200, and the second inner half nut 32 and the second outer half nut 31 to open up the clamping of the mold column 200.
[0043] In one embodiment of this utility model, such as Figures 2-5As shown, the clamping shaft brake mechanism of the injection molding machine also includes a linkage hinge 60. The linkage hinge 60 is configured to control the movement of the first inner half nut 22 and the second inner half nut 32 when the piston rod of the brake cylinder 10 extends or retracts. Specifically, the linkage hinge 60 includes a first hinge 61, a second hinge 62, a rotating block 63, and a hinge pin 64. The hinge pin 64 is centrally positioned between the first inner half nut 22 and the second inner half nut 32. For example, the hinge pin 64 is mounted stationary on the mold plate. The rotating block 63 is rotatably connected to the hinge pin 64. The two ends of the first hinge 61 are hinged to one end of the rotating block 63 and the first inner half nut 22, respectively. The two ends of the second hinge 62 are hinged to the other end of the rotating block 63 and the second inner half nut 32, respectively. When the piston rod of the brake cylinder 10 extends, it pushes the second inner half nut 32 to move. This, in turn, pulls the rotating block 63 to rotate via the second hinge 62 hinged to the second inner half nut 32. The rotating block 63 rotates around the hinge pin 64, thus achieving linkage control of the first inner half nut 22 and the second inner half nut 32. Similarly, when the piston rod of the brake cylinder 10 retracts, it achieves reverse control of the movement of the first inner half nut 22 and the second inner half nut 32.
[0044] In one embodiment of this utility model, such as Figures 2-3 As shown, the linkage hinge 60 also includes a bearing 65. The inner ring of the bearing 65 is connected to the hinge pin 64, and the outer ring of the bearing 65 is connected to the shaft hole of the rotating block 63. In this embodiment, the bearing 65 allows the rotating block 63 to rotate more smoothly, preventing jamming and improving the linkage control effect of the first brake nut 20 and the second brake nut 30.
[0045] In one embodiment of this utility model, such as Figures 1-3As shown, there are two first pull rods 40, located diagonally opposite each other in the space between the first brake nut 20 and the second brake nut 30. Similarly, there are two second pull rods 50, located diagonally opposite each other in the space between the first brake nut 20 and the second brake nut 30. Specifically, for example, if the first inner half-nut 22 has four corners, then there are a total of four pull rods (first pull rod 40 and second pull rod 50), distributed at the four corners. Two of these pull rods are directly connected to the first inner half-nut 22, while the other two pass through it. This design ensures smoother pulling of the first inner half-nut 22, the second inner half-nut 32, the first outer half-nut 21, and the second outer half-nut 31, resulting in more coordinated and synchronized closing and opening actions of these components, thus achieving a better brake effect on the mold clamping column 200.
[0046] In one embodiment of this utility model, such as Figures 1-5 As shown, the clamping shaft brake mechanism of the injection molding machine further includes a first guide block 70 and a second guide block 80. The first guide block 70 is disposed on one side of the first brake nut 20 and slides in engagement with the first outer half nut 21 and the first inner half nut 22. The second guide block 80 is disposed on one side of the second brake nut 30 and slides in engagement with the second outer half nut 31 and the second inner half nut. Specifically, the first guide block 70 is configured to allow the first outer half nut 21 and the first inner half nut 22 to move with the first guide block 70 as a guide, avoiding misalignment. This can be achieved using a concave-convex fit. Similarly, the second guide block 80 is configured to allow the second outer half nut 31 and the second inner half nut 32 to move with the second guide block 80 as a guide, avoiding misalignment. This can also be achieved using a concave-convex fit.
[0047] In one embodiment of this utility model, such as Figures 1-5 As shown, there are two of each of the first guide block 70 and the second guide block 80. The two first guide blocks 70 are slidably connected to the opposite sides of the first outer half nut 21 and the first inner half nut 22, respectively; the two second guide blocks 80 are slidably connected to the opposite sides of the second outer half nut 31 and the second inner half nut 32, respectively. In this way, the movement direction of the first outer half nut 21 and the first inner half nut 22 is limited between the two first guide blocks 70, and the movement direction of the second outer half nut 31 and the second inner half nut 32 is limited between the two second guide blocks 80, making the braking or release of the mold clamping column 200 more stable and reliable.
[0048] In one embodiment of this utility model, such as Figures 1-5 As shown, the clamping shaft brake mechanism of the injection molding machine further includes a first pad 90 and a second pad 100. The first guide block 70 is fixedly connected to the first pad 90. The first outer half nut 21 and the first inner half nut 22 both abut against the upper surface of the first pad 90. The second guide block 80 is fixedly connected to the second pad 100. The second outer half nut 31 and the second inner half nut 32 both abut against the upper surface of the second pad 100. Specifically, the first pad 90 facilitates the installation and fixing of the first guide block 70, and also provides support for the sliding of the first outer half nut 21 and the first inner half nut 22. The second pad 100 facilitates the installation and fixing of the second guide block 80, and also provides support for the sliding of the second outer half nut 31 and the second inner half nut 32.
[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A clamping shaft brake mechanism for an injection molding machine, characterized in that: Includes a brake cylinder, a first brake nut, a second brake nut, a first tie rod, and a second tie rod; The first brake nut includes a first outer half nut and a first inner half nut for clamping one mold clamping column, and the second brake nut includes a second outer half nut and a second inner half nut for clamping another mold clamping column; The brake cylinder is arranged horizontally and is connected and fixed to the first inner half nut, and the piston rod of the brake cylinder is connected and fixed to the second inner half nut. The first pull rod is horizontally positioned and one end is connected and fixed to the first inner half nut, while the other end passes through the second inner half nut and is connected and fixed to the second outer half nut. The second pull rod is horizontally positioned with one end connected and fixed to the second inner half nut, and the other end passes through the first inner half nut and is connected and fixed to the first outer half nut. The clamping shaft brake mechanism of the injection molding machine also includes a linkage hinge, which includes a first hinge, a second hinge, a rotating block, and a hinge pin. The hinge pin is centrally positioned with the first inner half nut and the second inner half nut. The rotating block is rotatably connected to the hinge pin. The two ends of the first hinge are respectively hinged to one end of the rotating block and the first inner half nut, and the two ends of the second hinge are respectively hinged to the other end of the rotating block and the second inner half nut.
2. The clamping shaft brake mechanism of the injection molding machine according to claim 1, characterized in that: The linkage also includes a bearing, the inner ring of which is connected to the hinge pin, and the outer ring of which is connected to the shaft hole of the rotating block.
3. The clamping shaft brake mechanism of the injection molding machine according to claim 1, characterized in that: There are two first tie rods, which are located diagonally opposite each other in the space between the first brake nut and the second brake nut. There are two second tie rods, which are located diagonally opposite each other in the space where the first brake nut and the second brake nut are arranged.
4. The clamping shaft brake mechanism of the injection molding machine according to claim 1, characterized in that: The clamping shaft brake mechanism of the injection molding machine further includes a first guide block and a second guide block. The first guide block is disposed on one side of the first brake nut and slides in cooperation with the first outer half nut and the first inner half nut. The second guide block is disposed on one side of the second brake nut and slides in cooperation with the second outer half nut and the second inner half nut.
5. The clamping shaft brake mechanism of the injection molding machine according to claim 4, characterized in that: Two of each of the first guide block and the second guide block are provided. The two first guide blocks are slidably connected to the opposite sides of the first outer half nut and the first inner half nut, respectively. The two second guide blocks are slidably connected to the opposite sides of the second outer half nut and the second inner half nut, respectively.
6. The clamping shaft brake mechanism of the injection molding machine according to claim 4, characterized in that: The clamping shaft brake mechanism of the injection molding machine also includes a first pad and a second pad. The first guide block is connected and fixed to the first pad. The first outer half nut and the first inner half nut both abut against the upper surface of the first pad. The second guide block is connected and fixed to the second pad. The second outer half nut and the second inner half nut both abut against the upper surface of the second pad.