Sealing structure for consumable heating device

Abstract

The utility model discloses a sealing structure for a consumable heating device. The sealing structure comprises a mounting seat, a cover plate and a sealing ring, the mounting base is used for being inserted into an upper cover of the storage box, the rear end of the mounting base is used for being exposed behind the upper cover, an air inlet is formed in the rear end of the mounting base, the front end of the mounting base is open, and an air outlet is reserved between the bottom edges of the front end of the mounting base; the cover plate is mounted in the air inlet hole in a liftable manner; the opening is used for mounting a heating assembly for heating consumables; the air outlet hole is used for downwards facing the peripheral surface of the consumable roll material in the material storage box; the sealing ring is installed on the bottom face of the cover plate, surrounds the periphery of the inner side of the edge of the cover plate and is used for sealing a gap between the cover plate and the air inlet hole. And after 3D printing is completed, the cover plate is lowered, so that a gap between the cover plate and the air inlet hole is sealed by the sealing ring, and moisture in external air can be prevented from permeating into the mounting seat.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field especially, a kind of sealing structure for consumable heating device. BACKGROUND

[0002] Fused deposition is the most popular 3D printing process in prior art, and the consumable used is thermoplastic wire wound on the outer periphery of a circular reel.

[0003] In the prior art 3D printing process, if the consumable is exposed to normal temperature air, it is easy to be damp, and the damp consumable has high moisture content, which can cause the consumable to become brittle when heated, and the consumable is prone to breakage. Therefore, a heating device is needed to heat the consumable roll in the storage box.

[0004] When the heating device is running, it needs to introduce air from the outside through the air inlet hole of the mounting seat, and heat the introduced air to form a hot air flow to heat the consumable roll wound in the storage box.

[0005] When the heating device is not working, if the air inlet hole cannot be sealed, the moisture in the outside air will seep into the storage box through the air inlet hole, and cause the consumable roll in the storage box to be damp, affecting the quality of 3D printing. SUMMARY

[0006] In view of the above problems, the utility model aims to provide a sealing structure for a consumable heating device to solve the problem of sealing the air inlet hole.

[0007] To achieve this purpose, the utility model adopts the following technical scheme:

[0008] A sealing structure for a consumable heating device, comprising a mounting seat, a cover plate and a sealing ring;

[0009] The mounting seat is used for inserting into the upper cover of the storage box, the rear end of the mounting seat is used for exposing to the rear of the upper cover, and the rear end of the mounting seat is provided with an air inlet hole;

[0010] The cover plate is installed on the air inlet hole in a lifting manner;

[0011] The sealing ring is installed on the bottom surface of the cover plate and surrounds the inner side of the edge of the cover plate, and the sealing ring is used for sealing the gap between the cover plate and the air inlet hole.

[0012] Further, it further comprises a guide rod, a motor and a gear;

[0013] The upper end of the guide rod is connected to the bottom surface of the cover plate; the lower end of the guide rod extends downward, and the side surface of the guide rod is provided with a rack;

[0014] The motor is installed on the inner side of the mounting base, the gear is installed on the output end of the motor, and the gear is engaged with the rack.

[0015] Further, the middle part of the cover plate is provided with a fastener mounting through hole.

[0016] The upper end of the guide rod is fixed to the middle part of the cover plate through a fastener.

[0017] Further, the mounting base is further provided with a receiving groove for accommodating the sealing ring.

[0018] Further, the receiving groove is matched with the sealing ring in shape and surrounds the inner side of the edge of the air inlet hole.

[0019] Further, the mounting base is provided with an air exhaust groove on the left and right sides of the edge of the air inlet hole.

[0020] The air exhaust groove extends in the front-rear direction, and the front end of the air exhaust groove is used for communicating with the storage cavity of the consumable roll of the storage box.

[0021] The air exhaust groove is located on the inner side of the receiving groove.

[0022] Further, the air exhaust groove is recessed downward on the edge of the air inlet hole.

[0023] Further, the left and right sides of the bottom surface of the cover plate are provided with lower edge portions.

[0024] The upper end of the lower edge portion is connected with the bottom surface of the cover plate, and the lower edge portion extends downward.

[0025] The outer side surface of the lower edge portion abuts against the inner side edge of the air inlet hole, and the lower edge portion shields the inner side of the air exhaust groove.

[0026] Further, the mounting base is further provided with a recessed hole groove.

[0027] The recessed hole groove is located on the front end bottom edge of the mounting base and is recessed rearward, and the recessed hole groove is used for cooperating with the heating assembly to form an air outlet hole to downwardly exhaust the hot air flow output from the heating cavity.

[0028] The technical scheme of the utility model has the beneficial effects that the sealing structure for the consumable heating device can prevent moisture in the external air from penetrating into the mounting base and prevent the consumable roll in the storage box from being dampened to affect the quality of 3D printing after 3D printing is completed by lowering the cover plate to seal the gap between the sealing ring and the air inlet hole. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic view of an embodiment of the heating device with the sealing structure.

[0030] Figure 2 An installation structure schematic diagram for one embodiment of the cover plate and the sealing ring;

[0031] Figure 3 An installation structure schematic diagram for one embodiment of the guide rod, the motor and the gear;

[0032] Figure 4 A structure schematic diagram for one embodiment of the mounting base;

[0033] Wherein: the mounting base 1; the heating assembly 2; the cover plate 3; the sealing ring 4; the guide rod 5; the motor 6; the gear 7; the air inlet hole 11; the air outlet groove 12; the open mouth 13; the receiving groove 14; the concave hole groove 15; the lower edge part 31; the fastener mounting through hole 32; the rack 51. DETAILED DESCRIPTION

[0034] The technical scheme of the present application will be further described below in conjunction with the accompanying drawings. Figures 1-4 The technical scheme of the present application will be further described below in conjunction with the accompanying drawings.

[0035] The accompanying drawings are only used for illustrative description and should not be understood as limitation to the present application; in order to better illustrate the present embodiment, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures in the drawings and their descriptions can be omitted.

[0036] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, and it can be said that the two elements are connected internally. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] A sealing structure for a consumable heating device, comprising a mounting base 1, a cover plate 3 and a sealing ring 4;

[0038] The mounting base 1 is used for being inserted into the upper cover of the storage box, the rear end of the mounting base 1 is used for being exposed to the rear of the upper cover, and the rear end of the mounting base 1 is provided with an air inlet hole 11;

[0039] The cover plate 3 is installed on the air inlet hole 11 in a lifting manner;

[0040] The sealing ring 4 is installed on the bottom surface of the cover plate 3 and surrounds the inner side of the edge of the cover plate 3, and the sealing ring 4 is used for sealing the gap between the cover plate 3 and the air inlet hole 11.

[0041] As Figure 1 The front end of the mounting base 1 is an open end 13, and a gas outlet hole is left between the bottom edges of the front end of the mounting base 1, the open end 13 is used for installing a heating assembly 2 of a heating consumable, and the gas outlet hole is used for discharging a hot air flow downward to the outer surface of the consumable in the storage box.

[0042] The operation of the heating device is as follows:

[0043] Before 3D printing, the cover plate 3 is first lifted, and then the heating assembly 2 is started, the air flowing into the mounting base 1 from the air inlet hole 11 is heated by the heating assembly 2 to form a hot air flow, the hot air flow discharged downward from the air outlet end of the electric heater 232 passes downward and blows downward on the outer circumferential surface of the consumable roll in the storage box to heat the consumable; when the consumable reaches a dry state, the 3D printer is started to perform 3D printing.

[0044] When the 3D printing is completed, the cover plate 3 is lowered, and the sealing ring 4 seals the gap between the cover plate 3 and the air inlet hole 11, so that the moisture in the external air is prevented from penetrating into the mounting base 1.

[0045] Further, it further includes a guide rod 5, a motor 6 and a gear 7;

[0046] The upper end of the guide rod 5 is connected to the bottom surface of the cover plate 3, the lower end of the guide rod 5 extends downward, and the side surface of the guide rod 5 is provided with a rack 51;

[0047] The motor 6 is installed on the inner side of the mounting base 1, the gear 7 is installed on the output end of the motor 6, and the gear 7 is engaged with the rack 51.

[0048] As Figure 3 As shown, the gear 7 is driven to rotate by the motor 6, and then the guide rod 5 is driven to move up and down by the rack 51, so that the cover plate 3 is controlled to be lifted or lowered to cover or open the air inlet hole 11.

[0049] Further, the middle part of the cover plate 3 is provided with a fastener mounting through hole 32;

[0050] The upper end of the guide rod 5 is fixed to the middle part of the cover plate 3 by a fastener.

[0051] As Figure 2 and Figure 3 As shown, the disassembly and assembly convenience of the guide rod 5 can be improved.

[0052] Further, the mounting base 1 is further provided with a receiving groove 14 for accommodating the sealing ring 4.

[0053] As Figure 1 and Figure 4As shown, the sealing ring when the cover plate 3 is closed can be accommodated by the accommodation groove 14 to improve the sealing effect.

[0054] Further, the shape of the accommodation groove 14 matches the sealing ring 4 and surrounds the inner side of the edge of the air inlet hole 11.

[0055] As shown, the accommodation groove 14 for accommodating the sealing ring 4 is arranged on the inner side of the edge of the air inlet hole 11, which can improve the sealing of the cover plate 3 closing the air inlet hole 11. Figure 4

[0056] Further, the mounting seat 1 is provided with an exhaust groove 12 on both sides of the edge of the air inlet hole 11.

[0057] The exhaust groove 12 extends in the front-rear direction, and the front end of the exhaust groove 12 is used to communicate with the storage cavity of the consumable roll of the storage box.

[0058] The exhaust groove 12 is located on the inner side of the accommodation groove 14.

[0059] As shown, the exhaust groove 12 is used to exhaust the water vapor generated by the heating of the consumable. Figure 4

[0060] Further, the exhaust groove 12 is recessed downward on the edge of the air inlet hole 11.

[0061] As shown, when the cover plate 3 is closed and the air inlet hole 11, the exhaust groove 12 and the air inlet hole 11 can be closed synchronously, which can avoid the humid air outside from penetrating into the mounting seat 1 through the exhaust through hole. Figure 4 Further, the bottom surface of the cover plate 3 is provided with lower edge portions 31 on both sides.

[0062] The upper end of the lower edge portion 31 is connected with the bottom surface of the cover plate 3, and the lower edge portion 31 extends downward.

[0063] The outer side surface of the lower edge portion 31 abuts against the inner side edge of the air inlet hole 11, and the lower edge portion 31 blocks the inner side of the exhaust groove 12.

[0064] As shown,

[0065] , Figure 1 , Figure 2 and Figure 4 When the heating device is working, the cover plate 3 is raised, the airflow flowing into the air inlet hole 11 passes between the two lower edge portions 31, and since the lower edge portion 31 blocks the inner side of the exhaust groove 12, the water vapor exhausted from the exhaust groove 12 passes from the outer side of the lower edge portion 31, so it can avoid the water vapor from being carried into the mounting seat 1 by the airflow flowing into the air inlet hole 11.

[0066] ​​Further, the mounting seat 1 is further provided with a recessed slot 15;

[0067] The recessed slot 15 is located at the front end bottom edge of the mounting seat 1 and is recessed rearward; the recessed slot 15 is used to cooperate with the heating assembly 2 to form an air outlet hole to discharge the hot air stream output from the heating cavity downward.

[0068] The air outlet hole formed by the recessed slot 15 cooperating with the heating assembly 2 can improve the heating efficiency of the hot air stream output from the heating assembly 2 to the consumable by matching the width of the air outlet hole with the width of the consumable roll in the storage box.

[0069] As described above, the sealing structure for the consumable heating device can prevent moisture in the external air from penetrating into the mounting seat 1 and prevent the consumable roll in the storage box from being dampened to affect the quality of 3D printing. Figures 1-4 The sealing structure for the consumable heating device can prevent moisture in the external air from penetrating into the mounting seat 1 and prevent the consumable roll in the storage box from being dampened to affect the quality of 3D printing.

[0070] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative labor, and these embodiments will fall within the protection scope of the present application.

Claims

1. A seal structure for a consumable heating device, characterized by, The mounting base, the cover plate and the sealing ring are included. The mounting base is used for being inserted into the upper cover of the storage box, the rear end of the mounting base is used for being exposed to the rear of the upper cover, and the rear end of the mounting base is provided with an air inlet hole. The cover plate is installed in the air inlet hole in a lifting manner. The sealing ring is installed on the bottom surface of the cover plate and surrounds the inner side of the edge of the cover plate, and the sealing ring is used for sealing the gap between the cover plate and the air inlet hole.

2. The seal structure for a consumable heating device according to claim 1, characterized by, The guide rod, the motor and the gear are further included. The upper end of the guide rod is connected to the bottom surface of the cover plate, the lower end of the guide rod extends downward, and the side surface of the guide rod is provided with a rack. The motor is installed on the inner side of the mounting base, the gear is installed on the output end of the motor, and the gear is engaged with the rack.

3. The seal structure for a consumable heating device according to claim 2, wherein The middle part of the cover plate is provided with a fastener mounting through hole. The upper end of the guide rod is fixed to the middle part of the cover plate through the fastener.

4. The seal structure for a consumable heating device according to claim 1, characterized by, The mounting base is further provided with a receiving groove for accommodating the sealing ring.

5. The seal structure for a consumable heating device according to claim 4, wherein The shape of the receiving groove matches that of the sealing ring, and the receiving groove surrounds the inner side of the edge of the air inlet hole.

6. The seal structure for a consumable heating device according to claim 4, wherein The mounting base is provided with an exhaust groove on the left and right sides of the edge of the air inlet hole. The exhaust groove extends in the front-rear direction, the front end of the exhaust groove is used for communicating with the storage cavity of the consumable roll of the storage box. The exhaust groove is located on the inner side of the receiving groove.

7. The seal structure for a consumable heating device according to claim 6, wherein The exhaust groove is recessed downward on the edge of the air inlet hole.

8. The seal structure for a consumable heating device according to claim 7, wherein The left and right sides of the bottom surface of the cover plate are provided with lower edge parts. The upper end of the lower edge part is connected to the bottom surface of the cover plate, and the lower edge part extends downward. The outer side surface of the lower edge part abuts against the inner edge of the air inlet hole, and the lower edge part shields the inner side of the exhaust groove.

9. The seal structure for a consumable heating device according to claim 1, wherein The mounting base is further provided with a recess groove. The recess groove is located on the front end bottom edge of the mounting base and is recessed backward, and the recess groove is used for cooperating with the heating assembly to form an air outlet hole to discharge the hot air flow output from the heating cavity downward.

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