Sand mold 3DP printer nozzle cleaning device

Abstract

The utility model discloses a sand mold 3DP printer nozzle cleaning device, relates to the field of sand mold printing nozzle cleaning, and comprises a bottom plate, guide rods extending upwards are fixed at four corners of the top end of the bottom plate, the top ends of the guide rods are fixedly connected with a top plate, and a through hole is formed in the center of the top plate. An air cylinder is installed at the top of the top plate, the output end of the air cylinder penetrates through a through hole, extends to the position below the top plate and is connected with a connecting rod, a sliding plate is fixedly installed at the bottom end of the connecting rod, a movable clamp is fixedly installed at the bottom end of the sliding plate, and a fixed clamp is fixedly installed at the top end of the bottom plate; and accommodating grooves for accommodating resin spray heads are formed in the movable clamp and the fixed clamp. By arranging the air tap mechanism and the breathable intercepting mechanism, resin cured in the resin nozzle can be extruded in an air pressure mode, and the problem that cured resin sprayed out at a high speed accidentally hurts people is avoided through the breathable intercepting mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand mould printing nozzle cleaning field, specifically is a sand mould 3DP printer nozzle cleaning device. BACKGROUND

[0002] Sand mould printing, generally adopts one layer of floating sand and one layer of resin to pile up, solidifying agent is mixed in the floating sand, and the resin and the solidifying agent have a solidification reaction, so that each layer of floating sand can sketch the sand core section, and 3D printing is realized.

[0003] In the prior art, after shutdown, the resin remaining in the resin nozzle will be solidified, generally, a heating mode is used to soften the surface of the solidified resin, and then the solidified resin is discharged by poking out or pressing out, and the inner diameter of the nozzle of the sand mould printing is generally 50 microns, which is extremely small, therefore, the inner cavity of the resin nozzle is damaged by using the poking out or pressing out mode, and it is relatively inconvenient, therefore, the compressed air mode is generally used to extrude the solidified resin, but the high-speed ejected solidified resin can injure people. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a sand mould 3DP printer nozzle cleaning device.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a sand mould 3DP printer nozzle cleaning device, including the bottom plate, the top end four corners of the bottom plate are all fixed with the upward extension guide rod, the top end fixed connection of the guide rod has the top plate, the center of the top plate is equipped with the through -hole, the top of the top plate is installed with the air cylinder, the output of the air cylinder passes through the through -hole and extends to the bottom of the top plate and is connected with the connecting rod, the bottom end fixed mounting of the connecting rod has the sliding plate, the bottom end fixed mounting of the sliding plate has the mobile clamp, the top end fixed mounting of the bottom plate has the fixed clamp, the inside of the mobile clamp with the fixed clamp is equipped with the accommodating groove of accommodating resin nozzle, the inner wall of the accommodating groove with the outer wall of resin nozzle is in accord with, one end installation of the mobile clamp with the fixed clamp has the air nozzle mechanism, and the other end installation of the mobile clamp with the fixed clamp has the breathable interception mechanism.

[0006] As a further scheme of the utility model: the air nozzle mechanism includes the air hole that is recessed inward and is equipped in the both ends of the mobile clamp with the fixed clamp, and the air hole is communicated with the accommodating groove inner chamber.

[0007] As a further scheme of the utility model: the air nozzle mechanism further includes a connecting nozzle fixedly connected to one end of the fixed clamp, a sealing rubber pipe is sleeved on the outer wall of the connecting nozzle, the center of the connecting nozzle is aligned with the center of the air hole at one end of the fixed clamp, and the input end of the sealing rubber pipe is connected with the air pump through a pipeline.

[0008] As a further scheme of the utility model: the air-permeable interception mechanism includes a connecting barrel symmetrically arranged with the connecting nozzle, both ends of the connecting barrel are in open structure, a connecting ring is arranged at the end of the connecting barrel away from the fixed clamp, non-woven fabric is clamped between the connecting barrel and the connecting ring, the outer periphery of the connecting barrel and the outer periphery of the non-woven fabric are integrally formed with outward protruding protruding blocks, bolt holes are formed in the inside of the protruding blocks on the connecting barrel, and round holes for bolts to pass through are formed in the inside of the protruding blocks on the connecting ring.

[0009] As a further scheme of the utility model: a sealing ring is installed on the end face of the fixed clamp opposite to the mobile clamp.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. By arranging the air nozzle mechanism and the air-permeable interception mechanism, the resin solidified in the resin nozzle can be extruded by using the air pressure mode, and the problem of high-speed extruded solidified resin hurting people can be avoided by the air-permeable interception mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is an installation schematic view of the resin nozzle of the utility model;

[0014] Figure 3 It is a schematic view of the internal structure of the utility model;

[0015] Figure 4 It is a structural schematic view of the air-permeable interception mechanism of the utility model.

[0016] In the drawing: 1, bottom plate; 2, top plate; 3, sliding plate; 4, air cylinder; 5, connecting rod; 6, mobile clamp; 7, fixed clamp; 8, connecting barrel; 9, connecting nozzle; 10, sealing rubber pipe; 11, guide rod; 12, air hole; 13, connecting ring; 14, protruding block; 15, non-woven fabric. DETAILED DESCRIPTION

[0017] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0018] Please refer to Figures 1-3 In the embodiments of the present application, the sand mold 3DP printer nozzle cleaning device comprises a bottom plate 1, upward extending guide rods 11 are fixed at the top corners of the bottom plate 1, top plates 2 are fixedly connected to the top ends of the guide rods 11, a through hole is formed in the center of the top plate 2, air cylinders 4 are installed on the top of the top plate 2, the output ends of the air cylinders 4 extend to the lower side of the top plate 2 through the through hole and are connected with connecting rods 5, sliding plates 3 are fixedly installed at the bottom ends of the connecting rods 5, moving clamps 6 are fixedly installed at the bottom ends of the sliding plates 3, fixed clamps 7 are fixedly installed at the top ends of the bottom plate 1, accommodating grooves for accommodating resin nozzles are formed in the interiors of the moving clamps 6 and the fixed clamps 7, the inner walls of the accommodating grooves are in conformity with the outer walls of the resin nozzles, air nozzle mechanisms are installed at one end of the moving clamps 6 and the fixed clamps 7, and air permeable interception mechanisms are installed at the other end of the moving clamps 6 and the fixed clamps 7.

[0019] In the embodiments of the present application: first, when the sand mold printing nozzle is cleaned, the vertical nozzle is heated (heating mode: electric heating, etc.), the surface of the solidified resin in the nozzle is softened (the softening temperature of different types of resin is inconsistent, so the heating temperature should be determined according to the type of resin used), then the heated resin nozzle is placed in the accommodating groove of the fixed clamp 7, then the air cylinder 4 is started, the air cylinder 4 is elongated to push the sliding plate 3 to slide downward along the guide rod 11, the sliding plate 3 sliding downward drives the moving clamp 6 to be in close contact with the fixed clamp 7, at this time the resin nozzle is clamped and fixed, then the air pump connected with the air nozzle mechanism is started, the air pump compresses the external air and inputs it into the air nozzle mechanism, under the air pressure, the solidified resin in the resin nozzle is extruded, the solidified resin is sprayed out of the resin nozzle and enters the air permeable interception mechanism, the air permeable interception mechanism can avoid the danger caused by the direct outward spraying of the solidified resin.

[0020] Please refer to Figure 1 、 Figure 2 and Figure 3The air nozzle mechanism comprises air holes 12 formed at the two ends of the mobile clamp 6 and the fixed clamp 7 and recessed inwardly, the air holes 12 are communicated with the accommodating groove inner cavity, the air nozzle mechanism further comprises a connecting nozzle 9 fixedly connected to one end of the fixed clamp 7, the outer wall of the connecting nozzle 9 is sleeved with a sealing rubber pipe 10, the center of the connecting nozzle 9 is aligned with the center of the air hole 12 at one end of the fixed clamp 7, and the input end of the sealing rubber pipe 10 is connected with the air pump through a pipeline.

[0021] In the embodiment: by starting the air pump, the air pump sucks external air and pressurizes the input into the sealing rubber pipe 10, the gas acts on the inner cavity of the connecting nozzle 9 through the sealing rubber pipe 10, and enters the air hole 12 through the connecting nozzle 9, and then enters the flow channel of the resin nozzle through the air hole 12, the air pressure can act on the resin nozzle, and the solidified resin is extruded out to complete the cleaning purpose.

[0022] Please refer to Figure 3 and Figure 4 The air-permeable interception mechanism comprises a connecting cylinder 8 symmetrically arranged with the connecting nozzle 9, both ends of the connecting cylinder 8 are in an open structure, the connecting cylinder 8 is provided with a connecting ring 13 away from the fixed clamp 7, the non-woven fabric 15 is clamped between the connecting cylinder 8 and the connecting ring 13, the outer periphery of the connecting cylinder 8 and the outer periphery of the non-woven fabric 15 are integrally formed with the outwardly protruding protruding blocks 14, the inside of the protruding blocks 14 on the connecting cylinder 8 is provided with bolt holes, and the inside of the protruding blocks 14 on the connecting ring 13 is provided with round holes for the bolts to pass through.

[0023] In the embodiment: after the compressed air acts on the resin until the resin falls off, at this time the resin obtains a large kinetic energy and is sprayed outwards at a high speed, the solidified resin sprayed outwards enters the connecting cylinder 8 and is intercepted by the non-woven fabric 15, the non-woven fabric 15 has good air permeability and can prevent the compressed air from being blocked out of the channel, and at the same time has good toughness and can effectively intercept the sprayed solidified resin to avoid the situation that the high-speed moving solidified resin injures people;

[0024] When the solidified resin in the connecting cylinder 8 needs to be taken out or the non-woven fabric 15 needs to be replaced, the connecting ring 13 can be removed by disassembling the bolts, and the non-woven fabric 15 should be punched with a through hole at the position aligned with the round hole before installation to facilitate the installation of the bolts.

[0025] Please refer to Figure 2 The end surface of the fixed clamp 7 opposite to the mobile clamp 6 is provided with a sealing ring.

[0026] In the embodiment: the sealing ring can ensure the air tightness of the fixed clamp 7 and the mobile clamp 6 after abutting, to avoid the overflow of the compressed air from the abutting position of the two.

[0027] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A sand mould 3DP printer nozzle cleaning device comprising a base plate (1), characterized in that, The top end of the bottom plate (1) is fixed with an upward extending guide rod (11), the top end of the guide rod (11) is fixedly connected with a top plate (2), the center of the top plate (2) is provided with a through hole, the top of the top plate (2) is provided with a gas cylinder (4), the output end of the gas cylinder (4) extends below the top plate (2) and is connected with a connecting rod (5), the bottom end of the connecting rod (5) is fixedly provided with a sliding plate (3), the bottom end of the sliding plate (3) is fixedly provided with a moving clamp (6), the top end of the bottom plate (1) is fixedly provided with a fixed clamp (7), the inside of the moving clamp (6) and the fixed clamp (7) is provided with a containing slot for containing a resin nozzle, the inner wall of the containing slot is matched with the outer wall of the resin nozzle, one end of the moving clamp (6) and the fixed clamp (7) is provided with a gas nozzle mechanism, and the other end of the moving clamp (6) and the fixed clamp (7) is provided with a breathable interception mechanism.

2. A sand mold 3DP printer nozzle cleaning device according to claim 1, characterized in that, The gas nozzle mechanism comprises a gas hole (12) provided in the moving clamp (6) and the fixed clamp (7) and recessed inwardly, and the gas hole (12) is in communication with the inner cavity of the containing slot.

3. A sand mould 3DP printer nozzle cleaning device according to claim 2, wherein, The gas nozzle mechanism further comprises a connecting nozzle (9) fixedly connected to one end of the fixed clamp (7), the outer wall of the connecting nozzle (9) is sleeved with a sealing rubber pipe (10), the center of the connecting nozzle (9) is aligned with the center of the gas hole (12) at one end of the fixed clamp (7), and the input end of the sealing rubber pipe (10) is connected with a gas pump through a pipeline.

4. A sand mould 3DP printer nozzle cleaning device according to claim 3, wherein, The breathable interception mechanism comprises a connecting cylinder (8) symmetrically arranged with the connecting nozzle (9), both ends of the connecting cylinder (8) are in an open structure, one end of the connecting cylinder (8) away from the fixed clamp (7) is provided with a connecting ring (13), the connecting cylinder (8) and the connecting ring (13) are clamped with a non-woven fabric (15), the outer periphery of the connecting cylinder (8) and the outer periphery of the non-woven fabric (15) are integrally formed with a protruding block (14) protruding outwardly, the inside of the protruding block (14) on the connecting cylinder (8) is provided with a bolt hole, and the inside of the protruding block (14) on the connecting ring (13) is provided with a circular hole for the bolt to pass through.

5. A sand mould 3DP printer nozzle cleaning device according to claim 4, wherein, The end face of the fixed clamp (7) and the moving clamp (6) is provided with a sealing ring.

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