Heat sink for a printhead

Abstract

The application provides a heat dissipation device of a print head, relates to the field of printers, and comprises a support frame, two print head bodies arranged on the left and right sides of the lower end of the support frame respectively, a heat dissipation fan arranged behind the print head body, a radiator assembled between the heat dissipation fan and the print head body, a cleaning support reciprocatingly and slidably arranged outside the radiator, a cleaning auxiliary mechanism arranged between the cleaning support and the heat dissipation fan, an installation auxiliary mechanism arranged between the radiator and the support frame, and a drop protection mechanism arranged between the support frame and the print head body. The automatic cleaning of the ventilation auxiliary groove is realized, the auxiliary accumulation of dust and impurities in the ventilation auxiliary groove is avoided, the heat dissipation effect of the print head body and the working efficiency of the heat dissipation fan and the radiator in the actual application process are ensured, the cleaning of the ventilation groove is more convenient, and the blockage of the ventilation auxiliary groove is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a heat dissipation device for a print head. Background Art

[0002] In the actual application of 3D printers, in order to avoid the heat transfer from the nozzle to the throat and motor during the heating process, to ensure the stability of the filament output of the print head and the accuracy of the shape of the printed object, a cooling fan and a radiator are usually used to dissipate heat from the print head.

[0003] For example, the existing application number CN201610355513.3 discloses a 3D print head assembly based on a Delta structure, including a print connector, a nut washer with an internal thread, a fisheye effector hanger, a heat sink, a tube core, a heating block, a print head, and a plastic throat. The 3D print head assembly is characterized by screwing the nut washer into the screw at the lower end of the print connector, aligning the center hole of the fisheye effector hanger with the threaded hole at the center of the heat sink, and then screwing the print connector into the internal thread of the heat sink. The fisheye effector hanger is locked by the bolt on the print connector and the nut washer. The stepped small hole in the heat sink, the tube core, and the print head positioning throat are used to improve the difficulty of loading and unloading the printer, reduce the occurrence of print head blockage failures, and improve the working stability of the printer.

[0004] However, in the process of using a cooling fan and a radiator to dissipate heat from the print head, in order to ensure the effectiveness of the fan and the heat dissipation efficiency of the print head, a plurality of ventilation auxiliary slots are usually provided on the inside of the radiator so that the cold air generated by the fan can be blown to the print head to dissipate heat. During the long-term use of the printer and the radiator, dust and impurities from the outside are very likely to adhere to the inside of the ventilation auxiliary slots. Since the radiator is mostly arranged between the print head and the fan, it is inconvenient to clean it. At the same time, as dust and impurities continue to accumulate in the ventilation auxiliary slots, the ventilation auxiliary slots are easily blocked, affecting the heat dissipation effect of the print head. Summary of the Invention

[0005] In view of this, the present invention provides a heat dissipation device for the print head, which realizes automatic cleaning of the ventilation auxiliary groove, avoids the auxiliary accumulation of dust and impurities in the ventilation auxiliary groove, ensures the heat dissipation effect of the print head body and the working efficiency of the heat dissipation fan and radiator in actual application, improves the convenience and cleaning effect of cleaning the ventilation auxiliary groove, and further improves the stability of the filament output of the print head body and the accuracy of the shape of the printed object.

[0006] The present invention provides a purpose and function of a heat dissipation device for a print head, specifically comprising: a support frame, a print head body, a heat dissipation fan, a radiator, a cleaning bracket, a cleaning auxiliary mechanism, an installation auxiliary mechanism and a drip protection mechanism, wherein the print head bodies are two, and the two print head bodies are respectively arranged on the left and right sides of the lower end of the support frame; the heat dissipation fan is arranged at the rear of the print head body; the radiator is assembled between the heat dissipation fan and the print head body; a plurality of ventilation auxiliary slots are evenly arranged on the inner side of the radiator; the cleaning bracket is arranged on the outer side of the radiator for reciprocating sliding; the cleaning auxiliary mechanism is arranged on the cleaning between the bracket and the heat dissipation fan; the cleaning auxiliary mechanism includes: a driving auxiliary wheel, which is rotatably arranged at the rear of the radiator; the installation auxiliary mechanism is arranged between the radiator and the support frame; the installation auxiliary mechanism includes: a transmission pulley, and there are two groups of transmission pulleys, and the two groups of transmission pulleys are respectively rotatably arranged on the upper and lower sides of the left and right ends of the radiator; the drip protection mechanism is arranged between the support frame and the print head body; the drip protection mechanism includes: a protection auxiliary frame, and there are two protection auxiliary frames, and the two protection auxiliary frames are respectively slid forward and backward and arranged under the two print head bodies.

[0007] Furthermore, the cleaning auxiliary mechanism also includes: a driving support shaft, a driving protrusion and a driving auxiliary groove, the driving support shaft is coaxially fixedly connected between the driving auxiliary wheel and the driving wind wheel of the heat dissipation fan; the driving protrusion is fixedly connected to the outer side of the front end face of the driving auxiliary wheel; the outer end of the driving protrusion is fixedly connected to a driving ball head; the driving auxiliary groove is opened on the rear end face of the cleaning bracket; the driving auxiliary groove and the driving protrusion are slidingly connected.

[0008] Furthermore, both the front and rear sides of the auxiliary ventilation groove are trapezoidal groove structures inclined from the outside to the inside; and the trapezoidal groove and the auxiliary ventilation groove are connected to each other.

[0009] Furthermore, cleaning scrapers are evenly arranged and fixedly connected to the inner side of the cleaning bracket; the cleaning scrapers are positioned relatively to the ventilation auxiliary slots; cleaning auxiliary plates are elastically connected to both ends of the cleaning scrapers; and the cleaning auxiliary plates and the ventilation auxiliary slots fit together.

[0010] Furthermore, the installation auxiliary mechanism further comprises: positioning bolts, the positioning bolts having two groups, the two groups of positioning bolts being respectively connected to the outer ends of the two groups of transmission pulleys, the positioning bolts being threadedly connected to the radiator; and a limiting groove being provided on the outer side of the positioning bolts;

[0011] The outer end of the transmission pulley is coaxially fixedly connected with a positioning auxiliary ring; the positioning auxiliary ring is rotatably connected to the support radiator; a transmission belt is wrapped around the outer side of the transmission pulleys on the left and right sides; a limiting protrusion is fixedly connected to the inner side of the transmission pulley; the position of the limiting protrusion and the limiting groove on the same side are aligned and have the same size.

[0012] Furthermore, the installation auxiliary mechanism also includes: power-assisting inclined blocks and force-bearing inclined blocks. There are two groups of power-assisting inclined blocks, and the two groups of power-assisting inclined blocks are respectively slidably arranged on the inner end faces of the two groups of transmission pulleys; there are two groups of force-bearing inclined blocks, and the two groups of force-bearing inclined blocks are respectively vertically slidably arranged on the inner sides of the two groups of power-assisting inclined blocks; the surfaces between the power-assisting inclined blocks and the force-bearing inclined blocks are both inclined plate-shaped structures.

[0013] Furthermore, the outer side of the top end surface of the force-bearing oblique block is fixedly connected to a limiting guide frame; an elastic traction member is fixedly connected between the front and rear ends of the limiting guide frame and the radiator; the top end surface of the force-bearing oblique block is fixedly connected to a positioning pin; a positioning through hole is provided on the inner side of the support frame at a position aligned with the positioning pin; the inner side of the limiting guide frame is slidably connected to a limiting guide column; and the two ends of the limiting guide column are fixedly connected to the radiator.

[0014] Furthermore, the drip protection mechanism also includes: a connecting bracket and a resistance-increasing frame, there are two connecting brackets, and the two connecting brackets are respectively vertically fixedly connected to the outer sides of the rear end faces of the two protective auxiliary frames; a plurality of resistance-increasing frames are evenly arranged and fixedly connected to the top end face of the connecting bracket; the resistance-increasing frame is a T-shaped block structure; an elastic reset part is fixedly connected between the resistance-increasing frame and the supporting frame.

[0015] Furthermore, the upper end of the protective auxiliary frame is a sloped structure inclined from the upper side of the front end to the lower side of the rear end; the outer sides of the left and right end surfaces of the protective auxiliary frame are fixedly connected to guide frames; the guide frame has a T-shaped frame structure; and a T-shaped guide groove is provided on the inner side of the support frame at the alignment position with the guide frame.

[0016] Furthermore, the drip protection mechanism also includes: a magnetic induction block and an electromagnet, there are two magnetic induction blocks, and the two magnetic induction blocks are respectively fixedly connected to the rear end faces of the two connecting brackets; there are two electromagnets, and the two electromagnets are respectively arranged behind the two connecting brackets; the electromagnets on the left and right sides are positioned relatively to the magnetic induction blocks, and the electromagnets on the left and right sides are electrically connected to the print head body.

[0017] Beneficial effects:

[0018] When the present invention is in use, in the process of dissipating heat of the print head body, the rotational force of the driving wind wheel is utilized to automatically drive the cleaning auxiliary mechanism, and the cleaning auxiliary mechanism is adopted to cooperate with the cleaning bracket to push it to slide up and down, thereby realizing automatic cleaning of the ventilation auxiliary groove, avoiding the auxiliary accumulation of dust and impurities in the ventilation auxiliary groove, ensuring the heat dissipation effect of the print head body and the working efficiency of the heat dissipation fan and radiator in actual application, improving the convenience and cleaning effect of cleaning the ventilation auxiliary groove, and further improving the stability of the filament output of the print head body and the accuracy of the shape of the printed object.

[0019] When in use, the present invention utilizes the Venturi tube analogy phenomenon to accelerate the flow speed of gas in the ventilation auxiliary slot, thereby improving the heat dissipation effect on the print head body and the working efficiency of the heat dissipation fan and the radiator when dissipating heat on the print head body.

[0020] When the present invention is used, the working efficiency of assembling the support frame and the radiator is improved, and the frequency of repeated labor and the difficulty of operation of the operator in the process of assembling and positioning the two are reduced.

[0021] In addition, when the present invention is in use, after the print head body stops working after printing is completed, the protective auxiliary frame is pushed to automatically slide under the print head body, thereby achieving effective protection under the print head body and avoiding the phenomenon of residual liquid in the print head body flowing to the printed product, further improving the accuracy and aesthetics of the shape of the printed object, as well as the use effect of the print head body in actual application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0023] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0024] In the attached figure:

[0025] Figure 1 It is an overall isometric structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the installation structure of the heat dissipation fan and the radiator of the present invention.

[0027] Figure 3 This is a schematic diagram of the structure of the driving auxiliary wheel and the cleaning bracket after being separated.

[0028] Figure 4 It is a schematic diagram of the installation structure of the driving auxiliary wheel and the cleaning bracket of the present invention.

[0029] Figure 5It is a schematic cross-sectional structural diagram of the radiator of the present invention.

[0030] Figure 6 It is a schematic diagram of the installation structure of the radiator and the print head body of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the installation auxiliary mechanism of the present invention.

[0032] Figure 8 It is a schematic structural diagram of the positioning bolt and the transmission pulley of the present invention after being separated.

[0033] Figure 9 It is a schematic diagram of the installation structure of the protective auxiliary frame and the supporting frame of the present invention.

[0034] Figure 10 It is a structural schematic diagram of the protective auxiliary frame of the present invention.

[0035] Reference Signs List

[0036] 1. Support frame; 2. Print head body; 3. Cooling fan; 4. Radiator; 401. Ventilation auxiliary slot; 5. Cleaning bracket; 501. Cleaning scraper; 502. Cleaning auxiliary plate; 6. Driving support shaft; 601. Driving auxiliary wheel; 602. Driving protrusion; 603. Driving auxiliary slot; 7. Transmission pulley; 701. Positioning bolt; 702. Positioning auxiliary ring; 703. Limiting groove; 704. Limiting protrusion; 705. Transmission belt; 706. Power assisting inclined block; 707. Force-bearing inclined block; 708. Limiting guide frame; 709. Elastic traction member; 710. Positioning pin; 711. Limiting guide column; 8. Protective auxiliary frame; 801. Connecting bracket; 802. Guide frame; 803. Resistance increasing frame; 804. Elastic reset member; 805. Magnetic induction block; 806. Electromagnet. DETAILED DESCRIPTION

[0037] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. The following describes various embodiments of the present invention in detail with reference to the accompanying drawings.

[0038] Example 1: Please refer to Figures 1 to 6 As shown:

[0039] The present invention provides a heat dissipation device for a print head, comprising a support frame 1, a print head body 2, a heat dissipation fan 3, a radiator 4, a cleaning bracket 5, a cleaning auxiliary mechanism, an installation auxiliary mechanism and a dripping protection mechanism. There are two print head bodies 2, which are respectively arranged on the left and right sides of the lower end of the support frame 1; the heat dissipation fan 3 is arranged behind the print head body 2; the radiator 4 is assembled between the heat dissipation fan 3 and the print head body 2; a plurality of ventilation auxiliary slots 401 are evenly arranged on the inner side of the radiator 4; the cleaning bracket 5 is arranged on the outer side of the radiator 4 for reciprocating sliding; the cleaning auxiliary mechanism is arranged between the cleaning bracket 5 and the heat dissipation fan 3; the cleaning auxiliary mechanism includes: a driving auxiliary wheel 601, which is rotatably arranged behind the radiator 4; the installation auxiliary mechanism is arranged between the radiator 4 and the support frame 1; the installation auxiliary mechanism includes: a transmission pulley 7, which has two groups of transmission pulleys 7, which are rotatably arranged on the upper and lower sides of the left and right ends of the radiator 4 respectively; and the dripping protection mechanism is arranged between the support frame 1 and the print head body 2.

[0040] Among them, the cleaning auxiliary mechanism also includes: a driving support shaft 6, a driving protrusion 602 and a driving auxiliary groove 603, the driving support shaft 6 is coaxially fixedly connected between the driving auxiliary wheel 601 and the driving wind wheel of the heat dissipation fan 3; the driving protrusion 602 is fixedly connected to the outer side of the front end face of the driving auxiliary wheel 601; the outer end of the driving protrusion 602 is fixedly connected to a driving ball head; the driving auxiliary groove 603 is provided on the rear end face of the cleaning bracket 5; the driving auxiliary groove 603 and the driving protrusion 602 are slidingly connected; in use, when the heat dissipation fan 3 is started and the driving wind wheel rotates, the driving wind wheel pushes the driving support shaft 6 and the driving auxiliary wheel 601 to rotate synchronously. During the rotation of the driving auxiliary wheel 601, the driving protrusion 602 pushes the driving auxiliary groove 603 and the cleaning bracket 5 to slide up and down. The design of the driving ball head at the front end of the driving protrusion 602 ensures a stable connection between the driving protrusion 602, the driving auxiliary groove 603 and the cleaning bracket 5.

[0041] Among them, the front and rear sides of the ventilation auxiliary groove 401 are both trapezoidal groove structures inclined from the outside to the inside; the trapezoidal groove and the ventilation auxiliary groove 401 are interconnected; in use, after the heat dissipation fan 3 is started and the wind wheel is driven to rotate, the cold air is blown from the ventilation auxiliary groove 401 to the print head body 2 to achieve heat dissipation of the print head body 2. In the process of heat dissipation of the print head body 2, the design of the trapezoidal groove structure on the front and rear sides of the ventilation auxiliary groove 401, when the cold air is restricted to flow through the reduced flow section, that is, the center position of the ventilation auxiliary groove 401, the flow rate increases and its flow rate is inversely proportional to the flow section. According to Bernoulli's principle, the increase in flow rate is accompanied by a decrease in fluid pressure, which is the common Venturi phenomenon. In layman's terms, this effect refers to the low pressure generated near the high-speed flowing fluid, thereby generating an adsorption effect. Therefore, this ventilation auxiliary groove 401 can, by the same principle as the Venturi tube phenomenon, change the airflow from coarse to fine, accelerate the gas flow rate, and thereby improve the heat dissipation effect of the print head body 2.

[0042] Among them, the inner side of the cleaning bracket 5 is evenly arranged and fixedly connected with a cleaning scraper 501; the position of the cleaning scraper 501 and the ventilation auxiliary groove 401 is relatively correct; the two ends of the cleaning scraper 501 are elastically connected with a cleaning auxiliary plate 502; the cleaning auxiliary plate 502 and the ventilation auxiliary groove 401 fit together; in use, when the cleaning bracket 5 slides up and down, the cleaning scraper 501 and the cleaning auxiliary plate 502 cooperate to realize automatic cleaning of the ventilation auxiliary groove 401. In the process of cleaning the ventilation auxiliary groove 401, the cleaning auxiliary plate 502 always keeps in contact with the ventilation auxiliary groove 401, ensuring the cleaning effect of the ventilation auxiliary groove 401 and avoiding the influence of the wear of the cleaning auxiliary plate 502 on the cleaning effect of the ventilation auxiliary groove 401.

[0043] The specific usage and function of this embodiment are as follows:

[0044] When the present invention is in use, after the heat dissipation fan 3 is started and the wind wheel is driven to rotate, the driving wind wheel pushes the driving support shaft 6 and the driving auxiliary wheel 601 to rotate synchronously. During the rotation of the driving auxiliary wheel 601, the driving protrusion 602 pushes the driving auxiliary groove 603 and the cleaning bracket 5 to slide up and down. During the sliding of the cleaning bracket 5 up and down, the cleaning scraper 501 and the cleaning auxiliary plate 502 are used to cooperate to realize the automatic cleaning of the ventilation auxiliary groove 401. During the cleaning of the ventilation auxiliary groove 401, the cleaning auxiliary plate 502 always maintains mutual contact with the ventilation auxiliary groove 401, ensuring the cleaning effect of the ventilation auxiliary groove 401; at the same time, due to the design of the trapezoidal groove structure on the front and rear sides of the ventilation auxiliary groove 401, the gas flow rate is accelerated by utilizing the same phenomenon as the Venturi tube, thereby improving the heat dissipation effect of the print head body 2.

[0045] Example 2: Please refer to Figures 6 to 10 As shown:

[0046] On the basis of the first embodiment, the dripping protection mechanism includes: a protection auxiliary frame 8 , and there are two protection auxiliary frames 8 . The two protection auxiliary frames 8 are respectively slidably arranged under the two print head bodies 2 .

[0047] The auxiliary installation mechanism further includes: positioning bolts 701, which are provided in two groups. The two groups of positioning bolts 701 are respectively provided at the outer ends of the two groups of transmission pulleys 7, and the positioning bolts 701 are threadedly connected to the radiator 4; and a limiting groove 703 is provided on the outer side of the positioning bolts 701;

[0048] The outer end of the transmission pulley 7 is coaxially fixedly connected to a positioning auxiliary ring 702; the positioning auxiliary ring 702 is rotatably connected to the radiator 4; a transmission belt 705 is wrapped around the outer side of the transmission pulley 7 on the left and right sides; a limiting protrusion 704 is fixedly connected to the inner side of the transmission pulley 7; the limiting protrusion 704 on the same side is aligned with the limiting groove 703 and has the same size; in use, when assembling the support frame 1 and the radiator 4, after docking the radiator 4 to the specified position of the support frame 1, align the two limiting protrusions 704 on the same side with the limiting groove 703 respectively, and then insert the positioning bolt 701 into the inner side of the mounting through hole. When rotating any one of the upper and lower positioning bolts 701, the transmission belt 705 and the transmission pulley 7 are used to cooperate to push the two positioning bolts 701 to rotate synchronously.

[0049] Among them, the installation auxiliary mechanism also includes: a power-assisting inclined block 706 and a force-bearing inclined block 707. There are two groups of power-assisting inclined blocks 706, and the two groups of power-assisting inclined blocks 706 are respectively slidably arranged on the inner end faces of the two groups of transmission pulleys 7; there are two groups of force-bearing inclined blocks 707, and the two groups of force-bearing inclined blocks 707 are respectively vertically slidably arranged on the inner sides of the two groups of power-assisting inclined blocks 706; the surfaces between the power-assisting inclined blocks 706 and the force-bearing inclined blocks 707 are both inclined plate-shaped structures; in use, when the positioning bolt 701 rotates inward, after the positioning bolt 701 contacts the power-assisting inclined block 706, the positioning bolt 701 synchronously pushes the power-assisting inclined block 706 during the inward rotation, and pushes the force-bearing inclined block 707 to slide outward synchronously during the inward sliding of the power-assisting inclined block 706.

[0050] When the locating bolt 701 is rotated in the opposite direction, the elastic traction member 709 is fixedly connected to the top end face of the load-bearing inclined block 707, and the locating pin 710 is fixedly connected to the top end face of the load-bearing inclined block 707. A locating through-hole is provided on the inner side of the support frame 1 and aligned with the locating pin 710. The inner side of the limit guide frame 708 is slidably connected to the limit guide post 711, and the two ends of the limit guide post 711 are fixedly connected to the radiator 4. In use, during the outward sliding process of the load-bearing inclined block 707, the locating pin 710 is inserted into the inner side of the locating through-hole to realize the positioning connection between the support frame 1 and the radiator 4. The limit guide frame 708 and the limit guide post 711 realize the guiding and limiting of the load-bearing inclined block 707 when it slides. When the positioning bolt 701 is rotated in the opposite direction, the elastic traction member 709 resets the load-bearing inclined block 707, so that the locating pin 710 disengages from the locating through-hole.

[0051] Among them, the drip protection mechanism also includes: a connecting bracket 801 and a resistance-increasing frame 803. There are two connecting brackets 801, and the two connecting brackets 801 are respectively vertically fixedly connected to the outer side of the rear end faces of the two protective auxiliary frames 8; a plurality of resistance-increasing frames 803 are evenly arranged and fixedly connected to the top end face of the connecting bracket 801; the resistance-increasing frame 803 is a T-shaped block structure; an elastic reset member 804 is fixedly connected between the resistance-increasing frame 803 and the support frame 1; in use, after the print head body 2 stops working, the elastic reset member 804 pushes the resistance-increasing frame 803 and the connecting bracket 801, so that the protective auxiliary frame 8 automatically slides to the bottom of the print head body 2.

[0052] Among them, the upper end of the protective auxiliary frame 8 is a slope-like structure inclined from the upper side of the front end to the lower side of the rear end; the outer sides of the left and right end surfaces of the protective auxiliary frame 8 are fixedly connected with guide frames 802; the guide frame 802 has a T-shaped frame structure; a T-shaped guide groove is provided on the inner side of the support frame 1 and aligned with the guide frame 802; during use, after the protective auxiliary frame 8 automatically slides to the bottom of the print head body 2, the residual liquid in the print head body 2 flows to the inside of the protective auxiliary frame 8, and the cooperation of the protective auxiliary frame 8 is used to achieve effective protection under the print head body 2, thereby avoiding the flow of residual liquid in the print head body 2 to the printed product, and the guide frame 802 ensures the stable connection between the protective auxiliary frame 8 and the support frame 1.

[0053] Among them, the drip protection mechanism also includes: a magnetic induction block 805 and an electromagnet 806. There are two magnetic induction blocks 805, and the two magnetic induction blocks 805 are fixedly connected to the rear end faces of the two connecting brackets 801 respectively; there are two electromagnets 806, and the two electromagnets 806 are respectively arranged behind the two connecting brackets 801; the electromagnets 806 on the left and right sides are positioned relatively positively with the magnetic induction blocks 805, and the electromagnets 806 on the left and right sides are electrically connected to the print head body 2; in use, the working principle of the electromagnet 806 is to utilize the magnetic effect of electric current. When the print head body 2 is started and the current passes through the wire, a magnetic field will be generated around the wire. This phenomenon is called the magnetic effect of electric current. The electromagnet 806 magnetizes the iron core by winding the wire around the iron core and passing current, thereby generating magnetism to adsorb the magnetic induction block 805, so that the protective auxiliary frame 8 slides backward away from the print head body 2, and the print head body 2 can work normally.

[0054] The specific usage and function of this embodiment are as follows:

[0055] When the present invention is in use, when assembling the support frame 1 and the radiator 4, after docking the radiator 4 to the designated position of the support frame 1, the two limiting protrusions 704 on the same side are aligned with the limiting grooves 703, and when any one of the upper and lower positioning bolts 701 is rotated, the cooperation of the transmission belt 705 and the transmission pulley 7 is used to push the two positioning bolts 701 to rotate synchronously. In the process of the positioning bolt 701 rotating inward, the assisting inclined block 706 is synchronously pushed. In the process of the assisting inclined block 706 sliding inward, the force-bearing inclined block 707 is pushed to slide outward synchronously. In the process of the force-bearing inclined block 707 sliding outward, the positioning The pin 710 is inserted into the inner side of the positioning through hole to realize the positioning connection between the support frame 1 and the radiator 4; after the print head body 2 stops working, the elastic reset member 804 pushes the resistance-increasing frame 803 and the connecting bracket 801, so that the protective auxiliary frame 8 automatically slides to the bottom of the print head body 2, realizing effective protection under the print head body 2, and avoiding the flow of residual liquid in the print head body 2 to the printed product. When the print head body 2 is working normally, the electromagnet 806 adsorbs the magnetic induction block 805, causing the protective auxiliary frame 8 to slide backward away from the print head body 2, and the print head body 2 can then work normally.

[0056] In this article, there are several points to note:

[0057] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0058] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0059] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. Heat dissipation device for the print head, including: A support frame (1), a print head body (2), a heat dissipation fan (3), a radiator (4), a cleaning bracket (5), a cleaning auxiliary mechanism, an installation auxiliary mechanism and a drip protection mechanism, wherein the print head bodies (2) are two, and the two print head bodies (2) are respectively arranged on the left and right sides of the lower end of the support frame (1); the heat dissipation fan (3) is arranged behind the print head body (2); the radiator (4) is assembled between the heat dissipation fan (3) and the print head body (2); a plurality of ventilation auxiliary slots (401) are evenly arranged on the inner side of the radiator (4); the cleaning bracket (5) is reciprocatingly slidably arranged on the outer side of the radiator (4); the cleaning auxiliary mechanism is arranged between the cleaning bracket (5) and the heat dissipation fan (3); The cleaning auxiliary mechanism comprises: a driving auxiliary wheel (601), the driving auxiliary wheel (601) being rotatably arranged behind the radiator (4); and the mounting auxiliary mechanism being arranged between the radiator (4) and the supporting frame (1); The installation auxiliary mechanism comprises: a transmission pulley (7), wherein the transmission pulley (7) has two groups, and the two groups of transmission pulleys (7) are rotatably arranged on the upper and lower sides of the left and right ends of the radiator (4); the drip protection mechanism is arranged between the support frame (1) and the print head body (2); The installation auxiliary mechanism further comprises: a power-assisting inclined block (706) and a force-bearing inclined block (707), wherein the power-assisting inclined block (706) comprises two groups, and the two groups of power-assisting inclined blocks (706) are respectively slidably arranged on the inner end surfaces of the two groups of transmission pulleys (7); the force-bearing inclined blocks (707) comprise two groups, and the two groups of force-bearing inclined blocks (707) are respectively vertically slidably arranged on the inner sides of the two groups of power-assisting inclined blocks (706); and the surfaces between the power-assisting inclined blocks (706) and the force-bearing inclined blocks (707) are both inclined plate-shaped structures; The dripping protection mechanism comprises: a protection auxiliary frame (8), wherein there are two protection auxiliary frames (8), and the two protection auxiliary frames (8) are respectively slidably arranged under the two print head bodies (2).

2. The heat dissipation device for a print head as claimed in claim 1, wherein: The cleaning auxiliary mechanism further comprises: a driving support shaft (6), a driving protrusion (602) and a driving auxiliary groove (603); the driving support shaft (6) is coaxially fixedly connected between the driving auxiliary wheel (601) and the driving wind wheel of the heat dissipation fan (3); the driving protrusion (602) is fixedly connected to the outer side of the front end surface of the driving auxiliary wheel (601); the outer end of the driving protrusion (602) is fixedly connected to a driving ball head; the driving auxiliary groove (603) is provided on the rear end surface of the cleaning bracket (5); and the driving auxiliary groove (603) and the driving protrusion (602) are slidably connected.

3. The heat dissipation device for a print head as claimed in claim 1, wherein: Both the front and rear sides of the auxiliary ventilation groove (401) are trapezoidal groove structures inclined from the outside to the inside; the trapezoidal groove and the auxiliary ventilation groove (401) are connected to each other.

4. The heat dissipation device for a print head as claimed in claim 1, wherein: Cleaning scrapers (501) are evenly arranged and fixedly connected to the inner side of the cleaning bracket (5); the cleaning scrapers (501) are positioned relatively to the auxiliary ventilation slots (401); cleaning auxiliary plates (502) are elastically connected to both ends of the cleaning scrapers (501); and the cleaning auxiliary plates (502) and the auxiliary ventilation slots (401) fit together.

5. The heat dissipation device for a print head as claimed in claim 1, wherein: The installation auxiliary mechanism further comprises: positioning bolts (701), wherein the positioning bolts (701) are provided in two groups, and the two groups of positioning bolts (701) are respectively arranged and connected to the outer ends of the two groups of transmission pulleys (7), and the positioning bolts (701) are threadedly connected to the radiator (4); and a limiting groove (703) is provided on the outer side of the positioning bolts (701); The outer end of the transmission pulley (7) is coaxially fixedly connected to a positioning auxiliary ring (702); the positioning auxiliary ring (702) is rotatably connected to the radiator (4); a transmission belt (705) is wound around the outer sides of the transmission pulleys (7) on the left and right sides; a limiting protrusion (704) is fixedly connected to the inner side of the transmission pulley (7); the limiting protrusion (704) and the limiting groove (703) on the same side are aligned in position and have the same size.

6. The heat dissipation device for a print head as claimed in claim 1, wherein: The outer side of the top end surface of the force-bearing inclined block (707) is fixedly connected to a limiting guide frame (708); an elastic traction member (709) is fixedly connected between the front and rear ends of the limiting guide frame (708) and the radiator (4); a positioning pin (710) is fixedly connected to the top end surface of the force-bearing inclined block (707); a positioning through hole is provided on the inner side of the support frame (1) at a position aligned with the positioning pin (710); the inner side of the limiting guide frame (708) is slidably connected to a limiting guide column (711); and the two ends of the limiting guide column (711) are fixedly connected to the radiator (4).

7. The heat dissipation device for a print head as claimed in claim 1, wherein: The drop protection mechanism further comprises: a connecting bracket (801) and a resistance-increasing bracket (803); there are two connecting brackets (801), and the two connecting brackets (801) are respectively and vertically fixedly connected to the outer sides of the rear end faces of the two protection auxiliary frames (8); a plurality of resistance-increasing brackets (803) are evenly arranged and fixedly connected to the top end face of the connecting bracket (801); the resistance-increasing bracket (803) is a T-shaped block structure; and an elastic reset member (804) is fixedly connected between the resistance-increasing bracket (803) and the support frame (1).

8. The heat dissipation device for a print head as claimed in claim 1, wherein: The upper end of the protective auxiliary frame (8) is a slope-shaped structure inclined from the upper side of the front end to the lower side of the rear end; the outer sides of the left and right end surfaces of the protective auxiliary frame (8) are fixedly connected to the guide frame (802); the guide frame (802) is a T-shaped frame structure; and a T-shaped guide groove is provided on the inner side of the support frame (1) at a position aligned with the guide frame (802).

9. The heat dissipation device for a print head as claimed in claim 7, wherein: The dripping protection mechanism further comprises: a magnetic induction block (805) and an electromagnet (806), wherein the magnetic induction blocks (805) are two and are respectively fixedly connected to the rear end faces of the two connecting brackets (801); the electromagnets (806) are two and are respectively arranged behind the two connecting brackets (801); the electromagnets (806) on the left and right sides are positioned relative to the magnetic induction blocks (805), and the electromagnets (806) on the left and right sides are electrically connected to the print head body (2).

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