Lifting detection device of swage sand coating machine

Abstract

The utility model relates to a lifting detection device of a swage sand coating machine, which comprises a frame, a sand coating machine body is mounted at the top of the inner wall of the frame, and a moving end of a displacement encoder is mounted at the bottom of a mold; the moving end of the displacement encoder ascends and descends along with the lifting mechanism of the mold; the displacement encoder is connected with the analog quantity module and outputs a group of 4-20mA analog quantity signals according to the movement of the lifting mechanism; an analog quantity signal is subjected to program conversion to obtain accurate position data of + / -0.1 mm, a displacement encoder outputs a 4-20 MA analog quantity signal to automatically adjust the lifting position of a mold, the mold moves to drive a sliding rod to slide in a sliding groove, a ball in the sliding groove rolls in a sliding rail indicated by the sliding rod, and when the ball makes contact with a pressing piece, the pressing piece is pressed by the pressing piece. The pressing piece can extrude the oil absorption cotton in the storage groove, and the lubricating oil in the storage groove is left on the sliding rail through the leakage groove, so that the control method of high precision and arbitrary height adjustment is realized, and the friction force is reduced in the sliding process.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting detection technical equipment, in particular to a lifting detection device for an iron mold sand coating machine. Background Art

[0002] Iron mold sand coating belongs to precision casting, which has the characteristics of high overall strength of sand mold, no deformation, and easy demoulding of castings. In the molding process, the lifting position of the sand coating machine is particularly important. However, the existing iron mold sand coating machine uses a contact switch for lifting limit, which has low positioning accuracy, and the surface of the guide column has no good lubrication effect after long-term use, resulting in wear and tear that seriously affects the accuracy. With the increase of factory projects, it cannot meet the use of one mold, and the mold needs to be replaced frequently, so the contact switch position needs to be adjusted frequently, which brings trouble to production.

[0003] The iron mold sand-coated molding machine (application number: 202022159706.6) includes a connecting block, a leakage hole is provided inside the connecting block, a rotating hole is provided inside the connecting block, a first motor box is fixedly connected to one side of the connecting block, a first motor is fixedly connected to the inside of the first motor box, and the output end of the first motor is rotatably connected to a rotating shaft. The utility model has the following advantages and effects: after the coated sand is transported into the funnel by the second conveyor belt, the first motor drives the rotating shaft to rotate, and the rotating shaft drives the rotating block to rotate, leaving a gap between the rotating block and the leakage hole. When the rotating block rotates, the baffle on the rotating block will stir the coated sand inside the funnel into the sand injection pipe. When the sand injection needs to be interrupted, the first motor can be stopped, and the baffle on the rotating block prevents the coated sand in the funnel from continuing to flow downward, which effectively solves the problem that the iron mold sand-coated molding machine in the prior art cannot control the sand injection into the interior.

[0004] The above patented iron mold sand coating machine uses a contact switch for the limit of lifting, and the positioning accuracy is not high. In addition, the surface of the guide column is not well lubricated after long-term use, resulting in wear that seriously affects the accuracy. Therefore, we need to provide a lifting detection device for the iron mold sand coating machine. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting detection device for an iron mold sand coating machine, which is installed at the bottom of the mold through the moving end of a displacement encoder; the moving end of the displacement encoder follows the lifting mechanism of the mold to perform lifting and lowering; the displacement encoder is linked to an analog module, and the displacement encoder outputs a set of 4-20mA analog signals according to the movement of the lifting mechanism; the analog signal is converted by a program to obtain accurate position data of ±0.1mm, and the displacement encoder outputs an analog signal of 4-20MA, which is calculated by a programmable controller to obtain accurate position data; the device can automatically adjust the lifting position of the mold according to the mold information obtained in advance, and the movement of the mold drives the slide bar to slide in the slide groove, and the ball in the slide groove rolls in the slide rail indicated by the slide bar. When the ball contacts the pressing piece, the pressing piece will squeeze the oil-absorbing cotton in the storage groove, and the lubricating oil in the storage groove will be retained on the slide rail through the leakage groove, thereby realizing a high-precision and arbitrary height adjustment control method, reducing friction during the sliding process, and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting detection device for an iron mold sand coating machine, comprising a frame, a sand coating machine body is installed on the top of the inner wall of the frame, a base platform is arranged inside the frame, a mold is arranged on the top of the base platform, and a lifting mechanism for adjusting the height of the mold is installed inside the base platform;

[0007] The lifting mechanism includes a hydraulic rod, a slide groove, a sliding rod, a lubrication assembly and an encoder assembly. A hydraulic rod is installed inside the base platform, and the extended end of the hydraulic rod passes through the top of the base platform and is installed at the bottom of the mold. Four sliding rods are installed at the bottom of the mold, and the surfaces of the four sliding rods are matched with the four slide grooves inside the base platform. A lubrication assembly for replenishing lubricating oil is installed on the surface of the sliding rod, and an encoder assembly is provided at the bottom of the mold.

[0008] Preferably, the encoder assembly includes an encoder moving end, an encoder connecting rope and a displacement encoder, an encoder moving end is arranged between the top of the hydraulic rod and the bottom of the mold, and a displacement encoder is installed on one side of the encoder moving end through the encoder connecting rope.

[0009] Preferably, the bottom of the displacement encoder is installed inside the base platform through a fixing seat.

[0010] Preferably, the lubrication assembly includes a ball, a storage groove, oil-absorbing cotton, a leakage groove, a slide rail and a pressing piece. The interior of the slide rod is provided with a storage groove for storing the oil-absorbing cotton, both sides of the storage groove are connected to the leakage groove, a pressing piece is arranged inside the leakage groove, both sides of the slide rod surface are provided with slide rails connected to the leakage groove, and the ball is adapted to the slide rail.

[0011] Preferably, the pressing member includes a push plate, a push rod, a push block and a support spring, the inside of the leakage groove is equipped with a push block through two support springs, a push rod is installed on one side of the push block, and one end of the push rod passes through the interior of the storage groove and is equipped with a push plate.

[0012] Preferably, an oil replenishing hole connected to the storage groove is provided on the surface of the sliding rod.

[0013] Preferably, a touch screen electrically connected to the encoder assembly is mounted on the surface of the frame.

[0014] Preferably, both sides of the base platform are connected to the frame surface through side panels.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The movable end of the displacement encoder of the utility model is installed at the bottom of the mold; the movable end of the displacement encoder follows the lifting mechanism of the mold to perform lifting and lowering, and automatically adjusts the lifting position of the mold. The movement of the mold drives the slide bar to slide in the slide groove, and the ball in the slide groove rolls in the slide rail on the surface of the slide bar. When the ball contacts the pressing piece, the pressing piece squeezes the oil-absorbing cotton in the storage groove, and the lubricating oil in the storage groove is retained on the slide rail through the leakage groove, thereby realizing a high-precision control method with arbitrary height adjustment, and reducing friction during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a stereogram of the encoder assembly of the utility model;

[0019] Figure 3 It is a three-dimensional diagram of the lubrication component of the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the pressing member of the utility model.

[0021] In the figure: 1. frame; 2. sand coating machine body; 3. base table; 4. mold; 5. lifting mechanism; 51. hydraulic rod; 52. slide groove; 53. slide rod; 54. lubrication assembly; 541. ball; 542. storage tank; 543. oil-absorbing cotton; 544. leakage groove; 545. slide rail; 500. pressing part; 5001. push plate; 5002. push rod; 5003. push block; 5004. support spring; 55. encoder assembly; 551. encoder moving end; 552. encoder connecting rope; 553. displacement encoder; 6. fixed seat; 7. oil filling hole; 8. touch screen; 9. side panel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a lifting detection device for an iron mold sand coating machine, comprising a frame 1, a sand coating machine body 2 is installed on the top of the inner wall of the frame 1, a base platform 3 is arranged inside the frame 1, a mold 4 is arranged on the top of the base platform 3, and a lifting mechanism 5 for adjusting the height of the mold 4 is installed inside the base platform 3;

[0024] The lifting mechanism 5 includes a hydraulic rod 51, a slide groove 52, a sliding rod 53, a lubrication assembly 54 and an encoder assembly 55. The hydraulic rod 51 is installed inside the base platform 3. The extended end of the hydraulic rod 51 passes through the top of the base platform 3 and is installed at the bottom of the mold 4. Four sliding rods 53 are installed at the bottom of the mold 4. The surfaces of the four sliding rods 53 are matched with the four slide grooves 52 inside the base platform 3. The surface of the sliding rod 53 is installed with a lubrication assembly 54 for replenishing lubricating oil, and an encoder assembly 55 is provided at the bottom of the mold 4.

[0025] The encoder assembly 55 includes an encoder moving end 551, an encoder connecting rope 552 and a displacement encoder 553. The encoder moving end 551 is arranged between the top of the hydraulic rod 51 and the bottom of the mold 4. The displacement encoder 553 is installed on one side of the encoder moving end 551 through the encoder connecting rope 552.

[0026] In this embodiment, the moving end of the displacement encoder 553 is installed at the bottom of the mold 4; the moving end of the displacement encoder 553 follows the lifting mechanism 5 of the mold 4 to perform lifting; the displacement encoder 553 is linked to the analog module, and the displacement encoder 553 outputs a set of 4~20mA analog signals according to the movement of the lifting mechanism 5; the analog signals are converted by the program to obtain accurate position data of ±0.1mm, and the displacement encoder 553 outputs 4~20MA analog signals, which are calculated by the programmable controller to obtain accurate position data; the equipment can automatically adjust the lifting position of the mold 4 according to the mold 4 information obtained in advance, thereby realizing a high-precision and arbitrary height adjustment control method.

[0027] In order to fix the displacement encoder 553 , the bottom of the displacement encoder 553 is installed inside the base platform 3 through a fixing seat 6 .

[0028] The lubrication assembly 54 includes a ball bearing 541, a storage groove 542, an oil-absorbing cotton 543, a drain groove 544, a slide rail 545 and a pressing member 500. The slide rod 53 has a storage groove 542 for storing the oil-absorbing cotton 543, both sides of the storage groove 542 are connected to the drain groove 544, and a pressing member 500 is arranged inside the drain groove 544. Both sides of the surface of the slide rod 53 have slide rails 545 connected to the drain groove 544, and the ball bearing 541 is matched with the slide rail 545.

[0029] Furthermore, the movement of the mold 4 drives the slide bar 53 to slide in the slide groove 52, and the ball 541 in the slide groove 52 rolls in the slide rail 545 indicated by the slide bar 53. When the ball 541 contacts the pressing piece 500, the pressing piece 500 squeezes the oil-absorbing cotton 543 in the storage groove 542, and retains the lubricating oil in the storage groove 542 through the leakage groove 544 to the slide rail 545, thereby reducing friction.

[0030] The pressing member 500 includes a push plate 5001, a push rod 5002, a push block 5003 and a support spring 5004. The push block 5003 is installed inside the leakage groove 544 through two support springs 5004. A push rod 5002 is installed on one side of the push block 5003. One end of the push rod 5002 passes through the interior of the storage groove 542 and is installed with the push plate 5001.

[0031] It is worth noting that the ball 541 squeezes the push block 5003 in the leakage groove 544, so that the push block 5003 squeezes the support spring 5004 and drives the push rod 5002 and the push plate 5001 to move. The push plate 5001 squeezes the oil-absorbing cotton 543 to squeeze out the lubricating oil, and the leakage groove 544 is connected to the storage groove 542 for the lubricating oil to flow out. At the same time, when the support spring 5004 is in a natural state, the push plate 5001 seals the gap between the storage groove 542 and the leakage groove 544.

[0032] In order to facilitate the replenishment of oil in the storage groove 542 , an oil replenishment hole 7 communicating with the storage groove 542 is opened on the surface of the sliding rod 53 .

[0033] A touch screen 8 electrically connected to the encoder assembly 55 is mounted on the surface of the frame 1;

[0034] Furthermore, the encoder assembly 55 is controlled by using the touch screen 8 .

[0035] In order to strengthen the connection between the base platform 3 and the frame 1 , both sides of the base platform 3 are connected to the surface of the frame 1 through side plates 9 .

[0036] The moving end of the displacement encoder 553 of the device is installed at the bottom of the mold 4; the moving end of the displacement encoder 553 follows the lifting mechanism 5 of the mold 4 to move up and down; the displacement encoder 553 is linked to the analog module, and the displacement encoder 553 outputs a set of 4-20mA analog signals according to the movement of the lifting mechanism 5; the analog signal is converted by the program to obtain accurate position data of ±0.1mm, and the displacement encoder 553 outputs 4-20MA analog signals, which are calculated by the programmable controller to obtain accurate position data; the device can automatically adjust the lifting position of the mold 4 according to the mold 4 information obtained in advance, thereby realizing a high-precision and arbitrary height adjustment control method, the movement of the mold 4 drives the slide bar 53 to slide in the slide groove 52, and the ball 541 in the slide groove 52 rolls in the slide rail 545 indicated by the slide bar 53, when the ball 541 contacts the pressing member 500, the pressing member 500 will squeeze the oil-absorbing cotton 543 in the storage groove 542, and the lubricating oil in the storage groove 542 will be retained on the slide rail 545 through the leakage groove 544.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting detection device for an iron mold sand coating machine, It is characterized in that include: A frame (1), wherein a sand coating machine body (2) is installed on the top of the inner wall of the frame (1); A base platform (3) is arranged inside the frame (1), and a mold (4) is arranged on the top of the base platform (3); and A lifting mechanism (5) installed inside the base platform (3) for adjusting the height of the mold (4); The lifting mechanism (5) comprises a hydraulic rod (51), a slide groove (52), a sliding rod (53), a lubrication assembly (54) and an encoder assembly (55). The hydraulic rod (51) is installed inside the base platform (3). The extended end of the hydraulic rod (51) passes through the top of the base platform (3) and is installed at the bottom of the mold (4). Four sliding rods (53) are installed at the bottom of the mold (4). The surfaces of the four sliding rods (53) are matched with the four slide grooves (52) inside the base platform (3). The surface of the sliding rod (53) is installed with a lubrication assembly (54) for replenishing lubricating oil, and an encoder assembly (55) is provided at the bottom of the mold (4).

2. A lifting detection device for an iron mold sand coating machine according to claim 1, Features: The encoder assembly (55) comprises an encoder moving end (551), an encoder connecting rope (552) and a displacement encoder (553); the encoder moving end (551) is arranged between the top of the hydraulic rod (51) and the bottom of the mold (4); and the displacement encoder (553) is installed on one side of the encoder moving end (551) via the encoder connecting rope (552).

3. A lifting detection device for an iron mold sand coating machine according to claim 2, Features: The bottom of the displacement encoder (553) is installed inside the base platform (3) via a fixing seat (6).

4. The lifting detection device of the iron mold sand coating machine according to claim 1, Features: The lubrication assembly (54) includes a ball bearing (541), a storage groove (542), oil-absorbing cotton (543), a leakage groove (544), a slide rail (545) and a pressing piece (500). The slide rod (53) is provided with a storage groove (542) for storing the oil-absorbing cotton (543). Both sides of the storage groove (542) are connected to the leakage groove (544). A pressing piece (500) is arranged inside the leakage groove (544). Both sides of the surface of the slide rod (53) are provided with slide rails (545) connected to the leakage groove (544), and the ball bearing (541) is adapted to fit the slide rails (545).

5. A lifting detection device for an iron mold sand coating machine according to claim 4, Features: The pressing member (500) includes a push plate (5001), a push rod (5002), a push block (5003) and a support spring (5004); the push block (5003) is installed inside the leakage groove (544) via two support springs (5004); a push rod (5002) is installed on one side of the push block (5003); one end of the push rod (5002) passes through the interior of the storage groove (542) and is installed with a push plate (5001).

6. A lifting detection device for an iron mold sand coating machine according to claim 4, Features: The surface of the sliding rod (53) is provided with an oil replenishing hole (7) which is connected to the storage groove (542).

7. The lifting detection device of the iron mold sand coating machine according to claim 2, Features: A touch screen (8) electrically connected to the encoder assembly (55) is mounted on the surface of the frame (1).

8. The lifting detection device of the iron mold sand coating machine according to claim 1, Features: Both sides of the base platform (3) are connected to the surface of the frame (1) via side panels (9).

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