CN107380199B

CN107380199B - Flexible parking device for sand box transfer trolley

Info

Publication number: CN107380199B
Application number: CN201710663750.0A
Authority: CN
Inventors: 孟繁华
Original assignee: Qingdao Sanheshan Casting Group Co ltd
Current assignee: Qingdao Sanheshan Casting Group Co ltd
Priority date: 2017-08-06
Filing date: 2017-08-06
Publication date: 2023-06-27
Anticipated expiration: 2037-08-06
Also published as: CN107380199A

Abstract

A flexible parking device for a sand box transfer trolley is arranged between a static pressure modeling host machine and the sand box transfer trolley and is used for providing mechanical and hydraulic flexible buffering at the operation end position of the sand box transfer trolley so as to lighten or eliminate rigid touch of the sand box transfer trolley caused by over-high speed.

Description

Flexible parking device for sand box transfer trolley

Technical Field

The invention relates to the field of casting, in particular to a flexible stopping device for a sand box transfer trolley on a static pressure molding production line.

Background

The static pressure modeling is to carry out preliminary compaction to molding sand through the air current pretension effect, then carry out final compaction to molding sand through hydraulic pressure head, and the static pressure modeling line is the complete sets that realizes static pressure modeling, mainly divide into following several parts: the main machine, the box closing machine, the casting machine, the transfer trolley, the box poking machine, the box separating machine and the like mainly comprise a hydraulic system and an electrical system.

The automatic static pressure molding line is a closed circulation production line formed by connecting all working procedures end to end, the automatic static pressure molding line has huge investment, is often required to be integrally introduced abroad, is usually used by a small number of large enterprises, and is mainly flexibly designed in overall layout and circulation process according to the specific requirements of manufacturers.

For the automatic static pressure molding line, the sand boxes which flow along with the line are automatically returned to the molding host machine through the conveying line after the sand boxes are turned over and shakeout is cleaned, and for the static pressure molding line which does not have the whole line circulation capability, the cleaned sand boxes need to be returned to the molding host machine by means of the sand box transfer trolley, and for specific products, the sand boxes are usually specially made, and the circulation speed of the sand boxes is fast enough to control the quantity of the sand boxes as much as possible, so that the requirement on the speed of the sand box transfer trolley is provided.

In the prior art, in order to enable the sand box transfer trolley to stop in time when reaching the host machine position, a limiting device is arranged on the host machine side and used for stopping the sand box transfer trolley, but the phenomenon that unstable factors are often brought to the operation of a production line due to the contact of the sand box transfer trolley and the limiting device when the speed of the sand box transfer trolley is higher is found in use, such as falling of the sand box, derailment of the transfer trolley and the like.

Disclosure of Invention

Based on the defects, in order to solve the problem that the transfer efficiency and the transfer stability of the conventional static pressure molding line sand box cannot be considered, the invention provides a flexible parking device for a sand box transfer trolley, and the device is adopted to enable the sand box transfer trolley to generate flexible buffering when parking at a terminal position, so that dangerous touch is not generated even if the speed is high.

The aim of the invention is achieved by the following technical scheme.

A flexible parking device for sand box transfer car (buggy), flexible parking device installs between molding host computer and sand box transfer car (buggy), is used for providing the multistage flexible buffering of machinery and/or hydraulic at the operation extreme position of sand box transfer car (buggy) to alleviate or eliminate the sand box transfer car (buggy) and bump because of the rigidity that the speed brought in the parking process.

The flexible parking device comprises a sand box transfer trolley, a top block, a first bracket, a first proximity switch, a connecting sleeve, a detection plate, a first spring, a limit sliding rod, a cylinder body, a second spring, a parking detection rod, a second proximity switch, a second bracket, a mounting base and a transition surface; the front end at the sand box transfer car (buggy) is fixed to the kicking block, the support is fixed on the kicking block, proximity switch one is fixed on support one, cylinder body and support two are fixed on the mount pad that is located modeling host computer one side, support two are located the cylinder body front end, proximity switch two is fixed on support two, one side that the cylinder body is close to the sand box transfer car (buggy) is equipped with the mounting hole, the spacing slide bar slides and sets up in this mounting hole, the tip sliding connection of one side that the spacing slide bar stretches out the cylinder body has the adapter sleeve, the cover has the spring one on the spacing slide bar, spring one is in between cylinder body and the adapter sleeve, fixed mounting has the pick-up plate on the adapter sleeve, this pick-up plate is in the position with proximity switch one, the inside of one side that the cylinder body is close to support two is equipped with the intermediate hole, spacing slide bar tip diameter gradual change forms the transitional plane, this transitional plane can stretch into in the intermediate hole of cylinder body, still set up the aperture that supplies the parking detection bar to wear out on the center of cylinder body intermediate hole, this parking detection bar has the spring two, this parking detection bar stretches out the one end of cylinder body and proximity switch two is relative, hydraulic oil in the cylinder body holds the oil level not lower than the extreme of pole.

As a more preferable option to the above-described technical solution, the oil level of the hydraulic oil is not lower than the uppermost end of the rod.

The invention has the beneficial effects that:

the flexible stopping device for the sand box transfer trolley provided by the invention has the advantages that the sand box transfer trolley generates flexible buffering at the end position, dangerous touch is not generated even if the speed is high, the problem that the transfer efficiency and the transfer stability of the existing static pressure molding line sand box cannot be considered is solved, the device can adapt to different bearing weights, debugging is not needed, and the overall productivity of a static pressure molding production line is greatly improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 illustrates a flexible parking apparatus for a flask transfer cart in accordance with an embodiment of the invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

According to the embodiment of the invention, a flexible parking device for a sand box transfer trolley is provided, and the flexible parking device is arranged between a static modeling host machine and the sand box transfer trolley and is used for providing mechanical and/or hydraulic flexible buffering at the running end position of the sand box transfer trolley so as to reduce or eliminate rigid touch of the sand box transfer trolley caused by too high speed in the parking process. The structure is shown in fig. 1, and the components respectively represented by reference numerals in the drawing are as follows: 1. a sand box transfer vehicle; 2. a top block; 3. a first bracket; 4. a first proximity switch; 5. connecting sleeves; 6. a detection plate; 7. a first spring; 8. a limit sliding rod; 9. a cylinder; 10. a second spring; 11. a parking detection lever; 12. a second proximity switch; 13. a second bracket; 14. installing a base station; 15. and a transition surface.

The top block 2 is fixed at the front end of the sand box transfer trolley 1, the first support 3 is fixed on the top block 2, the first proximity switch 4 is fixed on the first support 3, the cylinder 9 and the second support 13 are fixed on a mounting base 14 positioned at one side of the modeling host machine (the mounting base 14 can directly select the ground, but is preferably a special base with adjustable mounting position on the ground), the second support 13 is positioned at the front end of the cylinder 9, the second proximity switch 12 is fixed on the second support 13, a mounting hole is arranged at one side of the cylinder 9 close to the sand box transfer trolley 1, the limit sliding rod 8 is slidably arranged in the mounting hole, a connecting sleeve 5 is slidably connected to the end part of the limit sliding rod 8, which extends out of the cylinder 9, a spring 7 is sleeved on the limit sliding rod 8, the spring 7 is positioned between the cylinder 9 and the connecting sleeve 5, a detection plate 6 is fixedly mounted on the connecting sleeve 5, the detection plate 6 is positioned at a position opposite to the first proximity switch 4, a middle hole is formed in the interior of one side of the cylinder 9 close to the second support 13, the end part of the limit sliding rod 8 is gradually changed in diameter to form a transition surface 15, the transition surface 15 can extend into the middle hole of the cylinder 9, a small hole is formed in the middle hole, the middle hole of the cylinder 9 is opposite to the middle hole, the top end of the cylinder 9 is provided with a small hole, and the small hole is opposite to the stop oil level 11, and the stop rod 11 is provided with the small hole, and the small hole 11 is opposite to the stop rod 11.

The principle of the device is elucidated below by means of the working process of the device: when the sand box transfer trolley 1 reaches the limit position, the top block 2 firstly collides with the connecting sleeve 5, meanwhile, the first proximity switch 4 is close to the detection plate 6, signals are obtained, the motor of the sand box transfer trolley 1 is controlled to start decelerating, the sand box transfer trolley 1 continues to move forwards, the top block 2 starts to contact with the limit sliding rod 8, the limit sliding rod 8 is pushed to move leftwards, the limit sliding rod 8 enters the middle hole of the cylinder body 9 leftwards, along with the limit sliding rod 8 entering the middle of the cylinder body 9, a gap between the transition surface 15 and the inner hole surface of the limit sliding rod is gradually reduced, then the resistance of an oil outflow gap in an oil cavity formed between the limit sliding rod 8 and the inner hole surface of the cylinder body 9 is gradually increased, the oil pressure of the oil cavity is also increased, and the force acting on the end surface of the limit sliding rod 8 is also increased. Thereby, the speed of the limit slide bar 8 to the left is gradually reduced. Finally, the stop slide rod 8 bumps on the parking detection rod 11 at a slower speed, the parking detection rod 11 gives a signal to the second proximity switch 12, and the motor of the sand box transfer trolley 1 is powered off, so that the flexible stop of the sand box transfer trolley 1 is realized.

The sand box transfer trolley adopts the flexible parking device, so that the final parking limit is changed from rigid touch to flexible buffer, different bearing weights can be adapted, debugging is not needed, and the overall productivity of the static pressure modeling production line is greatly improved.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The flexible parking device for the sand box transfer trolley is characterized by being arranged between a molding host machine and the sand box transfer trolley and used for providing mechanical and hydraulic flexible buffering at the operation end position of the sand box transfer trolley so as to reduce or eliminate rigid touch of the sand box transfer trolley caused by too high speed in the parking process;

the flexible parking device comprises a sand box transfer trolley (1), a top block (2), a first bracket (3), a first proximity switch (4), a connecting sleeve (5), a detection plate (6), a first spring (7), a limit sliding rod (8), a cylinder body (9), a second spring (10), a parking detection rod (11), a second proximity switch (12), a second bracket (13), a mounting base (14) and a transition surface (15); the top block (2) is fixed at the front end of the sand box transfer trolley (1), the first bracket (3) is fixed on the top block (2), the first proximity switch (4) is fixed on the first bracket (3), the cylinder body (9) and the second bracket (13) are fixed on the mounting base (14) positioned at one side of the molding machine, the second bracket (13) is positioned at the front end of the cylinder body (9), the second proximity switch (12) is fixed on the second bracket (13), one side of the cylinder body (9) close to the sand box transfer trolley (1) is provided with a mounting hole, the limit sliding rod (8) is arranged in the mounting hole in a sliding manner, the end part of one side of the limit sliding rod (8) extending out of the cylinder body (9) is connected with the connecting sleeve (5) in a sliding manner, the first spring (7) is sleeved on the limit sliding rod (8), the first spring (7) is positioned between the cylinder body (9) and the connecting sleeve (5), the detecting plate (6) is fixedly arranged on the connecting sleeve (5) at a position opposite to the first proximity switch (4), one side of the cylinder body (9) is provided with an intermediate hole, one side of the cylinder body (9) close to the second bracket (13) is provided with an intermediate hole, the intermediate sliding surface (8) can extend into the intermediate surface (15), and the end part (15) can extend into the intermediate surface (15), a small hole for the penetration of a parking detection rod (11) is further formed in the center of the middle hole of the cylinder body (9), a second spring (10) is sleeved on the parking detection rod (11), one end of the parking detection rod (11) extending out of the cylinder body (9) is opposite to the second proximity switch, hydraulic oil is contained in the cylinder body (9), and the oil level of the hydraulic oil is not lower than the uppermost end of the limiting sliding rod (8);

the mounting base (14) is a special base with adjustable position mounted on the ground.