CN105903913A - Sand injecting device of core shooting machine - Google Patents

Abstract

The invention discloses a sand injection device of a core shooting machine, which is composed of a sand storage bucket and a sand injection control device. The sand injection control device is composed of a fixing mechanism, a sand injection channel, a pressure piston block, a pressure control chamber and an air pressure pipeline. The sand channel is tubular, set in the middle of the fixed mechanism, and can move up and down in the fixed mechanism; there are two pressure piston blocks, which are fixedly connected with both sides of the sand injection channel, and can be moved up and down in the pressure control chamber It also includes a closing mechanism, the closing mechanism is composed of a support rod and a closing cover, and the closing cover is provided with a groove that can be fitted with the sand injection channel. The present invention adopts a unique air pressure control method to control the operation of the sand injection device. Since the vertical sand injection method is used instead of the ram for sand injection, jamming or sand leakage is avoided. In addition, since the sand injection control device is arranged outside the sand storage hopper , to avoid reducing the sand storage space of the sand storage hopper due to the sand injection control device being set in the sand storage hopper, and improve the efficiency of sand storage and sand injection.

Description

A sand injection device for a core shooter

technical field

The invention relates to the field of core shooting machine accessories, in particular to a sand injection device for a core shooting machine.

Background technique

At present, in the field of foundry machinery, the core technology of the core shooting machine is being widely used. The sand feeding device of the sand shooting cylinder on the existing foundry core shooting machine is mostly carried out in the form of a gate-type movable switch. After the sand shooting cylinder is filled with sand, it is closed by the gate. Close the sand outlet of the sand storage hopper. The sand injection method that drives the ram to reciprocate left and right is easy to install, but the left and right reciprocating movement of the ram will bring the sand out of the gap of the ram, which is prone to jamming of the ram or sand leakage.

In the patent of invention ZL201410221127.6 "A Sand Adding Device for a Hot Core Box Core Shooting Machine", it is proposed to replace the traditional gate structure with a vertical sand adding structure to avoid jamming or sand leakage. , but the sand injection power cylinder and the shakeout hanging pipe were all set in the sand storage hopper before, so that the sand storage space of the sand storage hopper was reduced, which seriously affected the efficiency of sand storage and sand injection.

Contents of the invention

The technical problem to be solved by the present invention is to provide a sand injection device for a core shooter that has a simple structure, prevents the sand injection cylinder from being full of sand and leaks sand, keeps the sand injection channel unblocked, and ensures sand storage and sand injection efficiency.

The technical scheme that the present invention adopts is as follows:

A sand injection device for a core shooter, characterized in that it consists of a sand storage bucket and a sand injection control device, the sand storage bucket is installed on the upper part of the sand injection control device, and the sand injection control device consists of a fixed Mechanism, sand injection channel, pressure piston block, pressure control chamber and air pressure pipeline, the sand injection channel is tubular, set in the middle of the fixed mechanism, and can move up and down in the fixed mechanism; There are two pressure piston blocks, which are fixedly connected to both sides of the sand injection channel, and can move up and down in the pressure control chamber; it also includes a closing mechanism, which is composed of a support rod and a closing cover , the closed cover is provided with a groove that can be fitted with the sand injection channel, the air pressure pipeline includes two upper air pressure pipelines and two lower air pressure pipelines, the upper air pressure pipeline and the lower air pressure pipeline One end of the pipeline is connected with the pressure control chamber, and the other end is connected with the pressurizing device.

As one of the preferred technical solutions, it is characterized in that the pressurizing device can be replaced by a pumping device.

As one of the preferred technical solutions, it is characterized in that a sealing gasket is provided between the pressure piston block and the pressure control chamber.

As one of the preferred technical solutions, it is characterized in that a connecting plate is provided between the sand storage bucket and the sand injection control device, and a dustproof rubber ring is provided between the connecting plate and the sand injection channel.

As one of the preferred technical solutions, it is characterized in that several pads are arranged between the fixing mechanism and the sand injection channel.

The beneficial effects of the present invention are: the present invention adopts a unique air pressure control mode to control the operation of the sand injection device. When the sand injection is started, the upper air pressure pipeline is pressurized by the air supply device, and the air pressure will drive the pressure piston block and its connected The sand injection channel moves downward, the sand injection channel will leave the closed cover, and its channel is directly connected with the sand storage bucket and the lower sand injection cylinder to realize sand injection. Compared with the traditional technology, this device adopts the vertical sand injection method instead of the ram for sand injection, avoiding stuck or sand leakage. In addition, because the sand injection control device is set outside the sand storage bucket, it avoids The sand control device is arranged in the sand storage hopper so as to reduce the sand storage space of the sand storage hopper and improve the efficiency of sand storage and sand injection.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings that need to be used in the description of the embodiments. Apparently, the described drawings are only some embodiments of the present invention, not all embodiments, and those skilled in the art can obtain other designs and drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a state diagram before sand injection is started in the present invention.

Fig. 3 is a state diagram when sand injection is started in the present invention.

detailed description

The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection/connection relationships mentioned in this article do not refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively on the premise of not conflicting with each other.

Embodiment 1: A sand injection device for a core shooting machine, which consists of a sand storage bucket 1 and a sand injection control device 2. The sand storage bucket 1 is installed on the upper part of the sand injection control device 2. The sand injection control device 2 is composed of a fixed mechanism 21. Sand injection channel 22, pressure piston block 23, pressure control chamber 24 and air pressure pipe 25. The sand injection channel 22 is tubular, set in the middle of the fixing mechanism 21, and can move up and down in the fixing mechanism 21; There are two piston blocks 23, which are fixedly connected to both sides of the sand injection channel 22, and can move up and down in the pressure control chamber 24; it also includes a closing mechanism 3, which is composed of a support rod 31 and a closing cover 32 , the closing cover 32 is provided with a groove that can be fitted with the sand injection channel 22, and the air pressure pipeline 25 includes two upper air pressure pipelines 251 and two lower air pressure pipelines 252, one end of the upper air pressure pipeline 251 and the lower air pressure pipeline 252 are connected to the pressure The control cavity 24 is connected, and the other end is connected with the pressurizing device.

The device according to the embodiment of the present invention is shown in FIG. 2 before starting. At this time, the operator feeds gas into the upper air pressure pipeline 251, then the gas will pass through the upper air pressure pipeline 251 into the pressure control chamber and drive the pressure piston block and its connected sand injection channel to move downward, thus, the sand injection channel will Leaving the closed cover, its channel is directly connected with the sand storage bucket and the lower sand shooting cylinder to realize sand injection, and its sand injection state is shown in Figure 3.

When it is necessary to stop sand injection, stop feeding gas into the upward air pressure pipe 251, and turn to the downward air pressure pipe 252 to feed gas, then the gas will pass through the lower air pressure pipe 252 into the pressure control chamber and drive the pressure piston block and its connected parts. The sand injection channel moves upward, and when the upper end of the sand injection channel moves to the closing cover, the connection port between the sand injection channel and the sand storage bucket will be closed to stop the sand injection.

Compared with the traditional technology, the device in this embodiment uses the vertical sand injection method to replace the ram for sand injection, avoiding stuck or sand leakage. In addition, because the sand injection control device is arranged outside the sand storage bucket, it avoids the traditional Technology Because the sand injection control device is set in the sand storage hopper, the sand storage space of the sand storage hopper is reduced, and the efficiency of sand storage and sand injection is improved.

Embodiment 2: As a preferred embodiment, the pressurizing device in the above-mentioned embodiment 1 can be replaced with a decompressing device.

Before starting the device of the embodiment of the present invention, the operator draws pressure on the downward air pressure pipeline 252, then the downward airflow will drive the pressure piston block and the sand injection channel connected to it to move downward, thus, the sand injection channel will leave the closed cover, Its channel is directly connected with the sand storage bucket and the lower sand injection cylinder to realize sand injection.

When it is necessary to stop sand injection, stop pumping down the downward air pressure pipeline 252, and turn to the upward air pressure pipeline 251 to feed gas, then the upward airflow will drive the pressure piston block and the sand injection channel connected to it to move upward, when the upper end of the sand injection channel moves When the cover is closed, the connection port between the sand injection channel and the sand storage bucket will be closed to stop the sand injection.

Embodiment 3: As a preferred embodiment, a gasket can be provided between the pressure piston block 23 and the pressure control chamber 24 in the above embodiment 1 to ensure that the pressure control chamber gas The tightness improves the control efficiency.

Embodiment 4: As a preferred embodiment, a connection plate 4 can be provided between the sand storage bucket 1 and the sand injection control device 2 in the above embodiment 1, and a dustproof The apron 5 is used to prevent dust from entering the sand injection control device and affecting the life of the equipment.

Embodiment 5: As a preferred embodiment, a number of pads can be arranged between the fixing mechanism 21 and the sand injection channel 22 in the above embodiment 1 to reduce the friction loss between the fixing mechanism 21 and the sand injection channel 22 and improve the equipment life.

The preferred embodiments of the present invention have been described in detail above, but the invention is not limited to the described embodiments, and those skilled in the art can also make various equivalent modifications or replacements without violating the spirit of the present invention. These equivalent modifications or replacements are all within the scope defined by the claims of the present application.

Claims (5)

1. the note sand device of a core shooter, it is characterized in that, controlled device (2) by sand storage bin (1), note sand to form, described sand storage bin (1) is arranged on and notes sand and controls the top of device (2), described note sand controls device (2) and is made up of fixed mechanism (21), note sand passage (22), pressure piston block (23), pressure control cavity (24) and air-pressure duct (25), described note sand passage (22) is tubulose, it is arranged on the middle part of described fixed mechanism (21), and can move up and down in fixed mechanism (21)；Described pressure piston block (23) has two pieces, and it is fixed with described note sand passage (22) both sides and is connected, and can move up and down in pressure control cavity (24)；It also includes close mechanism (3), described close mechanism (3) is made up of support bar (31) and Guan Bi lid (32), described Guan Bi lid (32) is provided with groove that can be chimeric with described note sand passage (22), described air-pressure duct (25) includes two upper air-pressure ducts (251) and two lower air-pressure ducts (252), described upper air-pressure duct (251) is connected with described pressure control cavity (24) with pipeline one end of lower air-pressure duct (252), and the other end is connected with pressue device.

The note sand device of core shooter the most according to claim 1, it is characterised in that described pressue device can be replaced by voltage indicating device.

The note sand device of core shooter the most according to claim 1, it is characterised in that be provided with sealing gasket between described pressure piston block (23) and pressure control cavity (24).

The note sand device of core shooter the most according to claim 1, it is characterized in that, described sand storage bin (1) and described note sand control to be provided with connecting plate (4) between device (2), are provided with dust-proof cushion rubber (5) between connecting plate (4) and note sand passage (22).

The note sand device of core shooter the most according to claim 1, it is characterised in that be provided with some cushion blocks between described fixed mechanism (21) and note sand passage (22).