A turnover mechanism for a molding machine

Abstract

The utility model discloses a kind of turnover mechanism for molding machine, upper slide bar is slidably connected with the upper driving mechanism that can be connected with upper sand box, lower slide bar is slidably connected with the lower driving mechanism that can be connected with lower sand box;Upper driving seat is slidably connected with upper slide bar by upper slide sleeve, one end of upper driving oil cylinder is fixedly installed on rack, the other end of upper driving oil cylinder is connected with upper driving seat lower part, upper pressure cylinder is drivenly connected with upper pressing plate;Lower driving seat is slidably connected with lower slide bar by lower slide sleeve, one end of lower driving oil cylinder is fixedly installed on rack, the other end of lower driving oil cylinder is fixedly connected with lower driving seat upper part, lower pressure cylinder is installed on lower driving seat, lower pressure cylinder is drivenly connected with lower pressing plate.The present application is positioned and driven using upper driving mechanism, lower driving mechanism and upper sand box, lower sand box, can realize long time stable overturning work;Because using two groups of driving oil cylinder, two groups of slide sleeve combination drive, can guarantee upper driving mechanism, lower driving mechanism smooth lifting activity.

Description

Technical Field

[0001] This utility model relates to the field of molding machines, and specifically to a flipping mechanism for molding machines. Background Technology

[0002] In automated production lines for horizontal molding machines, the flipping mechanism, as a key functional module, undertakes the core task of performing a 180° spatial orientation change of the sand box after sand-shooting. The precise execution of this action directly affects the positioning accuracy of the subsequent box-closing process, thus impacting the quality of the finished casting. Current technical solutions mainly employ the following two implementation methods: Hydraulic drive flipping system: This system uses hydraulic cylinders in conjunction with sprockets and chains to achieve the flipping action. Its advantage lies in its high output torque, but it suffers from high maintenance costs and significant energy losses. Servo motor-reducer direct drive structure: This system uses a high-precision servo motor in conjunction with a planetary reducer. While it improves positioning accuracy and response speed, the reducer is prone to gear fatigue fracture due to long-term exposure to alternating torque. The axial dimension of the entire transmission system is too large, severely restricting the flexibility of equipment layout. The high-precision servo system increases equipment costs by more than 40%.

[0003] It is particularly noteworthy that, under high-speed continuous production conditions, existing flipping mechanisms generally suffer from insufficient dynamic stability. Experimental testing has shown that the positioning repeatability of traditional structures deteriorates rapidly after continuous operation, directly leading to an unacceptable increase in the box-closing misalignment rate. Therefore, there is a market demand for a flipping mechanism capable of long-term stable operation with both the upper and lower sand boxes. Utility Model Content

[0004] To address the aforementioned problems, this utility model aims to provide a flipping mechanism for a molding machine that can precisely match the upper and lower sand boxes.

[0005] To achieve this technical objective, the present invention provides a tilting mechanism for a molding machine, comprising a frame, tilting bearings on both sides of the frame, a connecting member on one side of the frame that can be connected to a drive mechanism, an upper sliding rod and a lower sliding rod on the left and right sides of the frame, an upper drive mechanism that can be connected to an upper sand box slidably connected to the upper sliding rod, and a lower drive mechanism that can be connected to a lower sand box slidably connected to the lower sliding rod.

[0006] The upper drive mechanism is composed of an upper pressure cylinder, an upper drive seat, an upper pressure plate, and two upper drive cylinders. The upper drive seat has upper sliding sleeves at both ends, and the upper drive seat is slidably connected to an upper sliding rod via the upper sliding sleeves. One end of the upper drive cylinder is fixedly mounted on the frame, and the other end is connected to the lower part of the upper drive seat. The upper pressure cylinder is mounted on the upper drive seat and is driven by the upper pressure plate. The lower drive mechanism is composed of a lower pressure cylinder, a lower drive seat, a lower pressure plate, and two lower drive cylinders. The lower drive seat has lower sliding sleeves at both ends, and the lower drive seat is slidably connected to a lower sliding rod via the lower sliding sleeves. One end of the lower drive cylinder is fixedly mounted on the frame, and the other end is fixedly connected to the upper part of the lower drive seat. The lower pressure cylinder is mounted on the lower drive seat and is driven by the lower pressure plate.

[0007] Preferably, the upper drive seat is further provided with two or more upper limit modules that can match the upper sand box, and the lower drive seat is further provided with two or more lower limit modules that can match the lower sand box; the upper limit module is composed of an upper limit cylinder, a movable column and a sliding sleeve, the upper limit cylinder is driven to connect with the movable column, the movable column and the sliding sleeve are slidably connected, and a limit groove is provided at the bottom of the movable column.

[0008] Preferably, the frame is composed of a left frame, a right frame, a main shaft, and a fixed connecting rod. The upper inner sides of the left and right frames are connected together by the main shaft. The tilting bearings are located on the left and right sides of the main shaft. The lower inner sides of the left and right frames are connected together by the fixed connecting rod.

[0009] Preferably, the frame is also equipped with a limit switch, and both the upper and lower sliding sleeves are equipped with L-shaped baffles that can contact the limit switch.

[0010] Preferably, a sliding mold frame is also provided between the left frame and the right frame.

[0011] Preferably, the frame is also provided with protective tracks for accommodating cables or pipes.

[0012] Preferably, the top of the left and right frames is also provided with lifting rings.

[0013] The beneficial effects of this utility model are that the upper drive mechanism and the lower drive mechanism are respectively positioned and driven by the upper sand box and the lower sand box, which can achieve stable flipping operation for a long time; due to the use of two sets of drive cylinders and two sets of sliding sleeves for combined drive, the upper drive mechanism and the lower drive mechanism can be guaranteed to move smoothly up and down; at the same time, the upper limit module can lock the upper sand box well, and the lower limit module can lock the lower sand box well, which can effectively avoid the occurrence of misalignment failure when closing the box. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural diagram of the back of the present invention. Detailed Implementation

[0016] The utility model of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments. In order to provide a clear and complete description of the technical solution, the following embodiments are selected for illustration; other embodiments obtained based on the content described in this application without creative effort are all within the scope of protection of this utility model.

[0017] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of clearly describing this embodiment, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this application.

[0018] like Figure 1-2 As shown, the specific embodiment of this utility model is a flipping mechanism for a molding machine, including a frame 1, flipping bearings 2 are respectively provided on both sides of the frame 1, and a connecting piece 3 that can be connected to the drive mechanism is also provided on one side of the frame 1. An upper sliding rod 4 and a lower sliding rod 5 are respectively provided on the left and right sides of the frame 1. An upper drive mechanism 6 that can be connected to the upper sand box is slidably connected to the upper sliding rod 4, and a lower drive mechanism 7 that can be connected to the lower sand box is slidably connected to the lower sliding rod 5.

[0019] The upper drive mechanism 6 is composed of an upper pressure cylinder 601, an upper drive seat 602, an upper pressure plate 603, and two upper drive cylinders 604. The upper drive seat 602 has upper sliding sleeves 605 at both ends, and the upper drive seat 602 is slidably connected to the upper sliding rod 4 via the upper sliding sleeves 605. One end of each upper drive cylinder 604 is fixedly mounted on the frame 1, and the other end is connected to the lower part of the upper drive seat 602. The upper pressure cylinder 601 is mounted on the upper drive seat 602 and is driven by the upper pressure plate 603. The drive mechanism 7 is composed of a lower pressure cylinder 701, a lower drive seat 702, a lower pressure plate 703, and two lower drive cylinders 704. The lower drive seat 702 is provided with sliding sleeves 705 at both ends. The lower drive seat 702 is slidably connected to the sliding rod 5 through the sliding sleeves 705. One end of the lower drive cylinder 704 is fixedly installed on the frame 1, and the other end of the lower drive cylinder 704 is fixedly connected to the upper part of the lower drive seat 702. The lower pressure cylinder 701 is installed on the lower drive seat 702 and is drivenly connected to the lower pressure plate 703. The upper drive seat 602 is also provided with two or more upper limit modules 606 that can match the upper sand box, and the lower drive seat 702 is also provided with two or more lower limit modules 706 that can match the lower sand box. The upper limit module 606 is composed of an upper limit cylinder 607, a movable column 608 and a sliding sleeve 609. The upper limit cylinder 607 is driven to connect with the movable column 608, the movable column 608 and the sliding sleeve 609 are slidably connected, and a limit groove is provided at the bottom of the movable column 608.

[0020] To accommodate other structures, the frame 1 is composed of a left frame 101, a right frame 102, a main shaft 103, and a fixed connecting rod 104. The upper inner sides of the left frame 101 and the right frame 102 are connected together by the main shaft 103. The tilting bearing 2 is set on the left and right sides of the main shaft 103. The lower inner sides of the left frame 101 and the right frame 102 are connected together by the fixed connecting rod 104.

[0021] To facilitate confirmation of the positions of the upper and lower sand boxes, a limit switch 9 is also installed on the frame 1. An L-shaped baffle 10 is installed on both the upper sliding sleeve 605 and the lower sliding sleeve 705, and the baffle 10 can contact the limit switch 9.

[0022] To facilitate placing the mold between the upper and lower sand boxes during use, a sliding mold rack 8 is also provided between the left frame 101 and the right frame 102.

[0023] To protect the cables and hydraulic oil lines, the frame 1 is also equipped with protective tracks 11 for accommodating the cables or pipes.

[0024] To facilitate installation and maintenance, lifting rings 105 are also provided on the top of the left frame 101 and the right frame 102. The lifting rings can be used to easily lift or lower the tilting mechanism, which is convenient for daily installation and maintenance.

[0025] This application employs an upper drive mechanism and a lower drive mechanism, which are respectively positioned and driven by the upper and lower sand boxes, enabling stable flipping operation over a long period of time. Due to the combination of two sets of drive cylinders and two sets of sliding sleeves, the upper and lower drive mechanisms can be smoothly raised and lowered. At the same time, the upper limit module can effectively lock the upper sand box, and the lower limit module can effectively lock the lower sand box, effectively preventing the occurrence of misalignment faults when closing the boxes.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. A tilting mechanism for a molding machine, comprising a frame, characterized in that: The frame is provided with tilting bearings on both sides, and a connecting part that can be connected to the drive mechanism is provided on one side of the frame. The frame is provided with an upper sliding rod and a lower sliding rod on the left and right sides respectively. The upper sliding rod is slidably connected to an upper drive mechanism that can be connected to an upper sand box, and the lower sliding rod is slidably connected to a lower drive mechanism that can be connected to a lower sand box. The upper drive mechanism is composed of an upper pressure cylinder, an upper drive seat, an upper pressure plate, and two upper drive cylinders. The upper drive seat has upper sliding sleeves at both ends, and the upper drive seat is slidably connected to an upper sliding rod via the upper sliding sleeves. One end of the upper drive cylinder is fixedly mounted on the frame, and the other end is connected to the lower part of the upper drive seat. The upper pressure cylinder is mounted on the upper drive seat and is driven by the upper pressure plate. The lower drive mechanism is composed of a lower pressure cylinder, a lower drive seat, a lower pressure plate, and two lower drive cylinders. The lower drive seat has lower sliding sleeves at both ends, and the lower drive seat is slidably connected to a lower sliding rod via the lower sliding sleeves. One end of the lower drive cylinder is fixedly mounted on the frame, and the other end is fixedly connected to the upper part of the lower drive seat. The lower pressure cylinder is mounted on the lower drive seat and is driven by the lower pressure plate.

2. The flipping mechanism for a molding machine according to claim 1, characterized in that: The upper drive seat is also provided with two or more upper limit position modules that can match the upper sand box, and the lower drive seat is also provided with two or more lower limit position modules that can match the lower sand box; the upper limit position module is composed of an upper limit position cylinder, a movable column and a sliding sleeve, the upper limit position cylinder is driven to connect with the movable column, the movable column and the sliding sleeve are slidably connected, and a limit groove is provided at the bottom of the movable column.

3. The flipping mechanism for a molding machine according to claim 1, characterized in that: The frame is composed of a left frame, a right frame, a main shaft, and a fixed connecting rod. The upper inner sides of the left and right frames are connected together by the main shaft. The tilting bearings are located on the left and right sides of the main shaft. The lower inner sides of the left and right frames are connected together by the fixed connecting rod.

4. The flipping mechanism for a molding machine according to claim 1, characterized in that: The frame is also equipped with a limit switch, and both the upper and lower sliding sleeves are equipped with L-shaped baffles that can contact the limit switch.

5. The flipping mechanism for a molding machine according to claim 3, characterized in that: A sliding mold frame is also provided between the left and right frames.

6. The flipping mechanism for a molding machine according to claim 1, characterized in that: The frame is also equipped with protective tracks for accommodating cables or pipes.

7. The flipping mechanism for a molding machine according to claim 3, characterized in that: The top of the left and right frames is also equipped with lifting rings.

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