Sand closing device of sand core machine

Abstract

The utility model provides a sand closing device of a sand core machine. The sand closing device comprises a sand hopper body, a sand hopper fixing disc, a guide funnel, a flashboard body and a driving assembly, the sand hopper fixing disc is provided with a sand discharging opening and fixedly arranged at the bottom end of the sand hopper body. The guide funnel is fixedly arranged on the side, away from the sand hopper body, of the sand hopper fixing disc and surrounds the sand discharging opening. The flashboard body is connected to one side, far away from the sand hopper body, of the sand hopper fixing disc in a sliding manner and penetrates through the guide funnel; the driving assembly is arranged on the sand hopper body and connected with the gate plate body, so that the gate plate body seals the sand discharging opening. According to the sand closing device of the sand core machine, sand leaked during sand closing can be guided into a set target area, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sand core machines, in particular to a sand core machine sand device. Background Art

[0002] At present, the furan resin sand used in the furan resin hot core box core shooting machine has the characteristics of high viscosity and fast compaction. The existing sand switching mechanism uses a large gap, and the interval time of each sand switching is between 20-60 seconds. The traditional sand closing mechanism is a moving plate. During the sand closing process, resin sand continues to leak out from the sand hopper sand leakage port, passes through the sand leakage port on the sand closing mechanism, and part of it falls into the sand shooting tube below the sand closing mechanism, and part of it falls outside the sand shooting tube, resulting in serious waste of resin sand and difficulty in cleaning. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model proposes a sand core machine sand device to solve the technical problem mentioned in the above background technology that sand is easily squeezed out of the sand shooting tube when closing the sand.

[0004] In order to solve this technical problem, the technical solution adopted by the utility model is:

[0005] A sand core machine sand device, comprising a sand hopper body, a sand hopper fixing plate, a guide funnel, a gate body and a driving assembly;

[0006] The sand hopper fixing plate is provided with a lower sand opening and is fixedly arranged at the bottom end of the sand hopper body;

[0007] The guide funnel is fixedly arranged on the side of the sand hopper fixing plate away from the sand hopper body and surrounds the lower sand opening;

[0008] The gate body is slidably connected to the side of the sand bucket fixed plate away from the sand bucket body, and is inserted into the guide funnel; the driving assembly is arranged on the sand bucket body and connected to the gate body, so that the gate body closes the lower sand opening. Further, the driving assembly includes a fixed plate and a cylinder; the fixed plate is fixed on the sand bucket body, the cylinder is fixed on the fixed plate, and the cylinder and the piston rod are connected to the gate body.

[0009] Furthermore, a transmission mechanism is provided on the sand bucket fixing plate; two gate bodies are provided relatively to each other and are connected through a transmission assembly, and the sliding of one gate body can move closer to or away from the other gate body through the transmission mechanism.

[0010] Furthermore, the transmission mechanism includes a rack assembly and a gear; the gear is rotatably connected to the sand bucket fixed plate, the rack assembly is slidably provided on the sand bucket fixed plate, the rack assembly corresponds to the gate body one by one, and is connected to the gate body; the sliding of one rack assembly can drive the other rack assembly to approach or move away through the gear.

[0011] Furthermore, the rack assembly includes a rack body and a connecting plate; the rack body is slidably connected to the sand bucket fixing plate and meshes with the gear, one end of the connecting plate is connected to the rack body, and the other end is connected to the gate body.

[0012] Compared with the prior art, the advancement of this application is:

[0013] By adding a guide funnel to the sand hopper fixed plate, when the gate body closes the sand outlet, the sand that is squeezed by the gate body and moves to the side can be guided by the guide funnel and fall from a predetermined position, avoiding part of the sand falling outside the predetermined target when closing the sand and causing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0015] Figure 1 A schematic diagram of a sand core machine sand device provided in one embodiment of the utility model;

[0016] Figure 2 for Figure 1 A cross-sectional schematic diagram of a sand core machine sand device is shown;

[0017] Reference numerals:

[0018] Sand hopper body 1, sand hopper fixing plate 2, lower sand port 21, guide funnel 3, gate body 4, drive assembly 5, fixing plate 51, cylinder 52, transmission mechanism 6, rack assembly 61, rack body 611, connecting plate 612, gear 62. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0020] Please also read Figure 1 and Figure 2This embodiment provides a sand core machine sand device, including a sand hopper body 1, a sand hopper fixing plate 2, a guide funnel 3, a gate body 4 and a driving assembly 5;

[0021] A lower sand port 21 is provided on the sand hopper fixed plate 2 and is fixed to the bottom end of the sand hopper body 1; it should be understood that a fixing frame is also provided on the sand hopper body 1 and is fixed to the support frame of the core shooting machine through the fixing frame; the sand hopper body 1 is large at the top and small at the bottom, and sand leaks from the bottom, and the sand in the sand hopper body 1 flows out through the lower sand port 21 of the sand hopper fixed plate 2 at the bottom end of the sand hopper body 1.

[0022] The guide funnel 3 is fixedly arranged on the side of the sand hopper fixing plate 2 away from the sand hopper body 1 and surrounds the lower sand opening 21;

[0023] The gate body 4 is slidably connected to the side of the sand hopper fixing plate 2 away from the sand hopper body 1 and is penetrated on the guide funnel 3; the driving component 5 is arranged on the sand hopper body 1 and connected to the gate body 4, so that the gate body 4 closes the lower sand opening 21.

[0024] It should be understood that a groove is provided on the guide funnel 3 near one end of the sand bucket fixing plate 2, and the gate body 4 can pass through the groove and close the lower sand mouth 21. Preferably, the gate body 4 just passes through the groove, and the internal width of the guide funnel 3 is the same as the width of the gate body 4, that is, the groove of the guide funnel 3 is arranged along its inner side surface.

[0025] By adding a guide funnel 3 to the sand hopper fixing plate 2, when the gate body 4 closes the lower sand port 21, the sand that is squeezed and moved to the side by the gate body 4 can be guided by the guide funnel 3 and fall from a predetermined position, thereby avoiding part of the sand falling outside the predetermined target when closing the sand, causing waste.

[0026] In other solutions, the driving assembly 5 includes a fixed plate 51 and a cylinder 52 ; the fixed plate 51 is fixed on the sand bucket body 1 , the cylinder 52 is fixed on the fixed plate 51 , and the cylinder 52 is connected to the piston rod and the gate body 4 .

[0027] In other schemes, a transmission mechanism 6 is further provided on the sand hopper fixed plate 2; two gate bodies 4 are provided opposite to each other and connected by a transmission assembly, and the sliding of one gate body 4 can approach or move away from the other gate body 4 through the transmission mechanism 6. Preferably, the two gate bodies 4 can abut at the center of the lower sand opening 21. By providing the two gate bodies 4, the sand pushed by the gate bodies 4 can be closer to the center of the lower sand opening 21, further avoiding the accumulation of the falling sand on the inner side of the guide sand hopper, causing waste. Preferably, the two gate bodies 4 can each close half of the lower sand opening 21.

[0028] In other schemes, the transmission mechanism 6 includes a rack assembly 61 and a gear 62; the gear 62 is rotatably connected to the sand bucket fixed plate 2, the rack assembly 61 is slidably arranged on the sand bucket fixed plate 2, the rack assembly 61 corresponds to the gate body 4 one by one, and is connected to the gate body 4; the sliding of one rack assembly 61 can drive the other rack assembly 61 to approach or move away through the gear 62. It should be understood that the rack assembly 61 can perform linear reciprocating motion through related structures such as the slide groove, and the rotation of the gear 62 can drive the two rack assemblies 61 to slide at the same time.

[0029] In other embodiments, the rack assembly 61 includes a rack body 611 and a connecting plate 612; the rack body 611 is slidably connected to the sand bucket fixed plate 2 and meshes with the gear 62, and one end of the connecting plate 612 is connected to the rack body 611 and the other end is connected to the gate body 4. It should be understood that the rack is always meshed with the gear 62.

[0030] The sand core closing device can guide the sand leaking out when closing the sand into a predetermined target area, thus reducing waste.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A sand core machine sand device, It is characterized in that It includes a sand hopper body, a sand hopper fixing plate, a guide funnel, a gate body and a driving assembly; The sand hopper fixing plate is provided with a lower sand opening and is fixedly arranged at the bottom end of the sand hopper body; The guide funnel is fixedly arranged on the side of the sand hopper fixing plate away from the sand hopper body and surrounds the lower sand opening; The gate body is slidably connected to the side of the sand hopper fixing plate away from the sand hopper body and is penetrated on the guide funnel; the driving assembly is arranged on the sand hopper body and connected to the gate body, so that the gate body closes the lower sand opening.

2. A sand core machine sand device according to claim 1, It is characterized in that The driving assembly comprises a fixed plate and a cylinder; the fixed plate is fixed on the sand bucket body, the cylinder is fixed on the fixed plate, and the cylinder and the piston rod are connected to the gate body.

3. A sand core machine sand device according to claim 2, It is characterized in that The sand bucket fixing plate is also provided with a transmission mechanism; the gate body is provided with two oppositely and connected through a transmission assembly, and the sliding of one gate body can approach or move away from the other gate body through the transmission mechanism.

4. A sand core machine sand device according to claim 3, It is characterized in that The transmission mechanism includes a rack assembly and a gear; the gear is rotatably connected to the sand bucket fixed plate, the rack assembly is slidably arranged on the sand bucket fixed plate, the rack assembly corresponds to the gate body one by one, and is connected to the gate body; the sliding of one rack assembly can drive the other rack assembly to move closer or farther through the gear.

5. A sand core machine sand device according to claim 4, It is characterized in that The rack assembly comprises a rack body and a connecting plate; the rack body is slidably connected to the sand bucket fixing plate and meshes with the gear; one end of the connecting plate is connected to the rack body, and the other end is connected to the gate body.

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