Printing head and printing equipment

Abstract

The invention relates to the field of impression, and provides a printing head which comprises a discharging body, a discharging piece, a locking piece, a connecting piece and a covering piece. A discharging opening is formed in the discharging body; the multiple connecting pieces are sequentially connected with the side wall of the discharging body. The discharging piece covers the discharging opening, a plurality of discharging holes are formed in the discharging piece, and the discharging holes are communicated with the discharging opening; a stepped opening is formed in the covering piece, and the covering piece covers the side, away from the discharging body, of the discharging piece; the discharging piece is located in the step opening, and the step opening is communicated with the discharging hole. The locking piece penetrates through the covering piece to be connected with the connecting piece, and the covering piece and the discharging body are locked through the connecting piece. The printing head has the effects that the use convenience is improved, and the overall service life of the printing head is prolonged. In addition, the invention further provides printing equipment.

Description

Technical Field

[0001] The present application relates to the field of stamps, and in particular to a print head and a printing device. Background Art

[0002] The print head is the discharge point for image printing or 3D printing. When using image printing, the print head will spray ink to print the required image. When used for 3D printing, a computer is used to model the printed model structure, and then a heating device is used to melt the consumables. The print head then sprays the molten gel-like consumables to form a model.

[0003] The print heads are all equipped with a metal discharge plate for discharge. The discharge plate is provided with discharge holes adapted to the needs according to different equipment and spraying conditions. If the discharge plate is bonded to the print head during image printing, ink spraying will not be affected.

[0004] However, if used in 3D printing, the viscosity of the gel-like filament is high. When the glue is squeezed out from the discharge plate, the pressure on the discharge plate is strong, making it easy for the discharge plate to separate from the print head. At the same time, it is easy to squeeze the gel-like filament into the connecting gap. When cleaning with detergents and other chemical products, it is easy to corrode the bonding point between the discharge plate and the print head, resulting in reduced bonding effect and shortened service life. If the discharge plate separates from the print head, it needs to be replaced as a whole, and the replacement cost is too high. Summary of the invention

[0005] In order to improve the above problems, the present application provides a print head and a printing device.

[0006] The present application provides a printing head and a printing device using the following technical solutions: A print head comprises a discharge body, a discharge piece, a locking piece, a connecting piece and a covering piece; a discharge port is arranged on the discharge body; a plurality of connecting pieces are arranged and are sequentially connected to the side walls of the discharge body; the discharge piece covers the discharge port, and the discharge piece is provided with a plurality of discharge holes, and the discharge holes are connected to the discharge port; a stepped opening is provided on the covering piece, and the covering piece covers the side of the discharge piece away from the discharge body; the discharge piece is located in the stepped opening, and the stepped opening is connected to the discharge holes; the locking piece passes through the covering piece and is connected to the connecting piece, and the covering piece is locked to the discharge body through the connecting piece.

[0007] By adopting the above technical solution, the discharge piece is inserted into the stepped opening, and the stepped opening at one end of the detachable discharge piece is aligned with the discharge port of the discharge body, and then the covering piece is covered on the discharge port. At the same time, the discharge piece is docked with the discharge port, and the covering piece is docked with the connecting piece. The docking point of the covering piece and the connecting piece is locked by using the locking piece, so that the covering piece can stably install the discharge piece at the discharge port of the discharge body, and at the same time facilitate disassembly and assembly for maintenance or cleaning, thereby improving the convenience of use, and increasing the overall service life of the print head, without the need to frequently replace the print head.

[0008] Optionally, the locking member includes a bolt and a nut; a first penetration opening is provided on the connecting member, and a second penetration opening is provided on the covering member; the bolt passes through the first penetration opening and the second penetration opening and is threadedly connected to the nut.

[0009] By adopting the above technical solution, after the bolt passes through the first penetration opening and the second penetration opening, the nut is screwed into the bolt, thereby locking both the connecting piece and the covering piece, so that the discharge piece can stably provide the discharge of the colloidal consumables. When disassembly is required, the nut is unscrewed from the bolt, and the bolt is taken out from the first penetration opening and the second penetration opening, the locking state can be contacted, the covering piece can be separated from the connecting piece, and then the discharge piece can be taken out from the stepped opening to replace, maintain or clean the discharge piece.

[0010] Optionally, the connecting piece is detachably connected to the discharge body; the connecting piece includes a U-shaped portion and a connecting portion; two connecting portions are provided and are respectively located at two ends of the U-shaped portion, and the first penetration opening is opened in the connecting portion.

[0011] By adopting the above technical solution, when the discharge piece is punched, the force is transferred to the connecting piece, and the connection transfers the force to the discharge body through the U-shaped portion, thereby reducing the effect of the force exerted on the discharge piece, so that the detachable connecting piece can ensure the stability of the connection while avoiding damage due to force.

[0012] Optionally, a limiting groove is provided on the outer wall of the discharging body, and the connecting piece is slidably connected to the discharging body via the limiting groove.

[0013] By adopting the above technical solution, the U-shaped portion can move along the limiting groove, thereby providing a limit for the U-shaped portion, so that the U-shaped portion is confined in the limiting groove and cannot be moved to other positions, thereby avoiding position displacement due to pressure or force. At the same time, it is also possible to more accurately locate the installation position of the U-shaped portion and the position of the connecting portion aligned with the cover part, and even the first through-hole and the second through-hole can be quickly aligned, thereby improving ease of use.

[0014] Optionally, the discharge member is further provided with a separation portion; the separation portion is sleeved in the discharge hole.

[0015] By adopting the above technical solution, the separation part is raised to separate the gel consumables, and the gel consumables will not contact the discharge piece, so the discharge piece can be saved from cleaning and contact with chemical products, thereby increasing the overall service life of the print head.

[0016] Optionally, the separation part includes a connecting membrane, a first sleeve membrane and a second sleeve membrane; the connecting membrane is an annular cylindrical structure, the first sleeve membrane and the second sleeve membrane are respectively installed at both ends of the connecting membrane, and do not cover the openings at both ends of the connecting membrane; the connecting membrane is close to the inner wall of the discharge hole, the first sleeve membrane is close to one side of the discharge piece next to the discharge hole, and the second sleeve membrane is close to the other side of the discharge part next to the discharge hole.

[0017] By adopting the above technical solution, the connecting membrane is used to stick to the hole wall of the discharge hole to separate the hole wall of the discharge hole from the colloidal consumable, so that when the colloidal consumable is extruded from the discharge hole, it will not contact the hole wall of the discharge hole. The first set of membranes and the second set of membranes are respectively used to block the two side walls next to the discharge hole, so as to reduce the gap between the connecting membrane and the two sides of the discharge plate, so as to reduce the situation where the colloidal consumable is squeezed into the gap between the discharge piece and the discharge body during discharge.

[0018] Optionally, a fastening portion is provided between the outer wall of the connecting membrane and the first sleeve membrane; a plurality of fastening portions are provided, which are respectively arranged around the outer wall of the connecting membrane; a clamping cavity is opened in the discharge piece, and the cavity opening of the clamping cavity matches the fastening portion.

[0019] By adopting the above technical solution, when the separation part needs to be fastened and installed to avoid separation, the fastening part is inserted into the cavity opening of the snap-fit ​​cavity. When inserted into the cavity wall of the snap-fit ​​cavity, it moves along the inner wall of the snap-fit ​​cavity, so that the fastening part is staggered with the cavity opening, and the fastening part cannot be separated from the snap-fit ​​cavity from the cavity opening, so that the entire separation part is clamped by the fastening part to ensure the stable installation of the separation part.

[0020] Optionally, a pressing portion is further provided on the covering member; the pressing portion is closely attached to the separating portion and connected to the covering member.

[0021] By adopting the above technical solution, the pressing part can be used to insert the covering part and the connecting part from the side, and the separation part is pressed at one end of the discharge part to prevent the separation part from being separated by pressure.

[0022] Optionally, a pressing end is provided at one end of the bolt, and a diameter of the pressing end is larger than a straight-line distance between the second penetration opening and the stepped opening.

[0023] By adopting the above technical solution, after the bolt is inserted into the second penetration opening, the pressing end is tightly attached to the covering part. Since the diameter of the pressing end is larger than the distance between the second penetration opening and the stepped opening, the pressing end will extend out of the covering part to the stepped opening, so that the end of the stepped opening away from the discharge body is locked by the pressing end, further preventing the discharge part from detaching from the stepped opening, and also preventing the discharge part from being difficult to lock due to the easy damage of the stepped opening.

[0024] A printing device comprises the above-mentioned printing head.

[0025] By adopting the above technical solution, the print head does not need to be frequently replaced, which can extend the service life of the printing device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Insert the discharge piece into the stepped opening, align the stepped opening at one end of the detachable discharge piece with the discharge opening of the discharge body, and then cover the discharge opening with the cover piece. At the same time, the discharge piece is docked with the discharge opening, and the cover piece is docked with the connecting piece. The docking point of the cover piece and the connecting piece is locked with the locking piece, so that the cover piece stably installs the discharge piece at the discharge opening of the discharge body, and is convenient for disassembly, maintenance or cleaning, thereby improving the convenience of use, and increasing the overall service life of the print head, without the need to frequently replace the print head; 2. After the bolt passes through the first through-hole and the second through-hole, the nut is screwed into the bolt to lock the connecting piece and the covering piece, so that the discharging piece can stably provide the discharging of the colloid consumables. When disassembly is required, the nut is unscrewed from the bolt, and the bolt is taken out from the first through-hole and the second through-hole, the locking state can be released, the covering piece can be separated from the connecting piece, and the discharging piece can be taken out from the stepped opening to replace, maintain or clean the discharging piece; 3. When the discharge piece is punched, the force is transferred to the connecting piece, and the connecting piece transfers the force to the discharge body through the U-shaped part, thereby reducing the effect of the force on the discharge piece, so that the detachable connecting piece can ensure the stability of the connection and avoid damage due to force; 4. The U-shaped portion can move along the limiting groove, thereby providing a limit for the U-shaped portion, so that the U-shaped portion is confined in the limiting groove and cannot be moved to other positions, which can avoid position displacement due to pressure or force. At the same time, it can also more accurately locate the installation position of the U-shaped portion and the position of the connecting portion aligned with the cover part, that is, the first through-hole and the second through-hole can be quickly aligned, thereby improving ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of a first three-dimensional structure of a print head assembled in one embodiment of the present application; Figure 2 is a schematic diagram of an exploded structure of a print head in some embodiments of the present application; Figure 3 is a schematic diagram of a first three-dimensional structure in which a print head is separated from a connecting member in some embodiments of the present application; Figure 4 is a schematic diagram of a second three-dimensional structure in which a print head is separated from a connecting member in some embodiments of the present application; Figure 5 It is a schematic diagram of the exploded structure of the discharging member and the separation part in some embodiments of the present application; Figure 6 This is a schematic diagram of a first assembly structure of a discharging member and a separation portion in some embodiments of the present application; Figure 7 It is a schematic diagram of a second assembly structure of a discharge member and a separation portion in some embodiments of the present application; Figure 8 is a schematic diagram of the cross-sectional structure of a print head in a front view direction in some embodiments of the present application; The marks in the accompanying drawings are: 1. discharge body, 11. discharge port, 12. limiting groove, 2. discharge piece, 21. discharge hole, 22. separation part, 221. connecting membrane, 222. first set of membranes, 223. second set of membranes, 224. fastening part, 23. clamping cavity, 3. locking part, 31. bolt, 32. nut, 33. pressing end, 4. connecting piece, 41. first penetration opening, 42. U-shaped part, 43. connecting part, 5. covering piece, 51. stepped opening, 52. second penetration opening, 53. pressing part. DETAILED DESCRIPTION

[0028] The following is an explanation of the implementation of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the information disclosed in the present application. The present application can also be implemented or applied through other different specific implementations, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0029] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0030] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0031] In addition, the terms "first" and "second" are only used to indicate the target, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0033] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0034] The embodiments of the present application disclose a print head and a printing device.

[0035] A print head, reference Figure 1 and Figure 2 As shown, it includes a discharge body 1, a discharge piece 2, a locking piece 3, a connecting piece 4 and a covering piece 5; a discharge port 11 is provided on the discharge body 1, and the discharge body 1 is the body of the print head. The print head is connected to an external printing device, and the printing device melts the consumables into a gel and discharges them through the discharge port 11, and prints the required 3D model according to the modeling of a control device such as a computer.

[0036] A plurality of connecting members 4 are provided, which are connected to the side walls of the discharging body 1 in sequence. The connecting members 4 are used to provide a fulcrum for connection, and may adopt a plate-like structure or a sheet-like structure.

[0037] The discharge piece 2 covers the discharge port 11, and the discharge piece 2 is provided with a plurality of discharge holes 21, which are connected to the discharge port 11. The discharge piece 2 can adopt a discharge plate made of metal material, and the discharge port 11 is covered by the discharge plate. The discharge holes 21 on the discharge plate need to set parameters such as size, style and quantity according to requirements, which are not limited here. The colloidal consumables discharged from the discharge port 11 are extruded through the discharge holes 21 to form the required 3D model.

[0038] The covering member 5 is provided with a stepped opening 51, which covers the side of the discharge member 2 away from the discharge body 1. The discharge member 2 is located in the stepped opening 51, and the stepped opening 51 is connected to the discharge hole 21. The covering member 5 is used to stably fix the discharge member 2 at the discharge port 11 of the discharge body 1. The stepped inner wall of the stepped opening 51 in the covering member 5 is consistent with the style of the discharge member 2, so that the discharge member 2 can be embedded in the stepped opening 51, and the outer wall of the stepped opening 51 is smaller than the discharge member 2. Therefore, the discharge member 2 cannot be separated from the stepped opening 51 from one side, so that the covering member 5 can cover the discharge member 2 at the discharge port 11 of the discharge body 1.

[0039] The locking member 3 is used to fasten the cover member 5 and the connecting member 4 together. The locking member 3 penetrates the cover member 5 and is connected to the connecting member 4 , and locks the cover member 5 and the discharging body 1 through the connecting member 4 .

[0040] Specifically, the discharge piece 2 is inserted into the stepped opening 51, and the stepped opening 51 at one end of the detachable discharge piece 2 is aligned with the discharge port 11 of the discharge body 1, and then the covering piece 5 covers the discharge port 11, and at the same time, the discharge piece 2 is docked with the discharge port 11, and the covering piece 5 is docked with the connecting piece 4, and the docking point of the covering piece 5 and the connecting piece 4 is locked by the locking piece 3, so that the covering piece 5 can stably install the discharge piece 2 at the discharge port 11 of the discharge body 1, and at the same time facilitate disassembly and assembly for maintenance or cleaning, thereby improving the convenience of use, and increasing the overall service life of the print head without the need for frequent replacement of the print head.

[0041] Furthermore, the locking member 3 may include a bolt 31 and a nut 32 , and the bolt 31 may be a butterfly bolt 31 or other type that is easy to rotate.

[0042] The connecting member 4 is provided with a first through-hole 41 , and the covering member 5 is provided with a second through-hole 52 . The apertures of the first through-hole 41 and the second through-hole 52 are consistent and both are larger than the outer diameter of the bolt 31 , so that the bolt 31 can pass through the first through-hole 41 and the second through-hole 52 .

[0043] After the bolt 31 passes through the first insertion opening 41 and the second insertion opening 52, the nut 32 is screwed into the bolt 31 to lock the connecting piece 4 and the covering piece 5, so that the discharge piece 2 can stably provide the discharge of the colloidal consumables. When disassembly is required, the nut 32 is unscrewed from the bolt 31, and the bolt 31 is taken out from the first insertion opening 41 and the second insertion opening 52. The locking state can be contacted, the covering piece 5 can be separated from the connecting piece 4, and then the discharge piece 2 can be taken out from the stepped opening 51 to replace, maintain or clean the discharge piece 2.

[0044] Among them, the number of first penetration openings 41 and second penetration openings 52 is set, and the position of each first penetration opening 41 and second penetration opening 52 corresponds one to one. At the same time, the number of locking members 3 is consistent with the number of first penetration openings 41 or second penetration openings 52. Through the multi-point locking of the locking members 3, the locking effect is increased, the fastening is stronger, and the discharge member 2 is further prevented from separating from the discharge body 1.

[0045] Furthermore, one end of the bolt 31 is a pressing end 33, and the diameter of the pressing end 33 is larger than the straight-line distance between the second penetration opening 52 and the stepped opening 51. The pressing end 33 can adopt a pressing plate or a pressing sheet, and the diameter of the pressing end 33 is larger than the distance from the second penetration opening 52 to the stepped opening 51, so that when the bolt 31 is inserted through the second penetration opening 52 and passes through the first penetration opening 41 of the connecting member 4, the bolt 31 is fixed by the nut 32. At this time, the pressing end 33 contacts and presses the surface of the covering member 5. At the same time, the pressing end 33 has a large diameter and therefore extends out of the covering member 5 to the stepped opening 51, so that the stepped opening 51 is locked away from the end of the discharging body 1 by the pressing end 33, further preventing the discharging member 2 from detaching from the stepped opening 51, and also preventing the stepped opening 51 from being easily damaged, making it difficult to lock the discharging member 2.

[0046] In some embodiments, reference Figure 3 As shown, the connecting member 4 is detachably connected to the discharge body 1, so that the connecting member 4 can be removed from the discharge body 1. After removal, the connecting member 4 is convenient for replacement and maintenance. After the connecting member 4 is locked by the locking member 3, the discharge member 2 is pressed by the colloidal consumables, and the force is transmitted to the connecting member 4 through the covering member 5, which can prevent the connecting member 4 from being broken and damaged by the force.

[0047] Among them, in addition to adopting a plate-like structure or a sheet-like structure, the connecting member 4 also includes a U-shaped portion 42 and a connecting portion 43. Two connecting portions 43 are provided, and are respectively located at the two ends of the U-shaped portion 42. The first penetration opening 41 is opened in the connecting portion 43. The U-shaped portion 42 can adopt a U-shaped frame, and the inner wall length of the U-shaped frame is equal to the height of the discharge body 1, and the inner wall width of the U-shaped frame is equal to the width of the discharge body 1. The connecting portion 43 can adopt a connecting plate, a connecting sheet or a connecting block, and the connecting portions 43 are respectively located at the two ends of the opening of the U-shaped portion 42.

[0048] The U-shaped portion 42 can be inserted from the end of the discharge body 1 away from the discharge port 11, and the first insertion hole 41 of the connecting portion 43 is aligned with the second insertion hole 52 of the covering member 5, so that the connecting portion 43 moves along the outer wall of the discharge body 1 to the covering member 5, and the first insertion hole 41 and the second insertion hole 52 are in contact with each other, or are located on the same straight line. When the locking member 3 passes through the first insertion hole 41 and the second insertion hole 52 to connect the connecting portion 43 with the covering member 5, the inner wall of the U-shaped portion 42 presses against the end of the discharge body 1 away from the discharge port 11, so that a snap-fitting is achieved. When the discharge member 2 is stamped, the force is transmitted to the connecting member 4, and the connection transmits the force to the discharge body 1 through the U-shaped portion 42, thereby reducing the effect of the force on the discharge member 2, so that the detachable connecting member 4 can ensure the stability of the connection while avoiding damage due to the force.

[0049] For further reference, Figure 4 As shown, a limiting groove 12 is provided on the outer wall of the discharge body 1, and the connecting member 4 is slidably connected to the discharge body 1 through the limiting groove 12. The limiting groove 12 can be a T-shaped groove or an I-shaped groove. The connecting member 4 is provided with a limiting protrusion. For example, when the connecting member 4 adopts a U-shaped portion 42 and a connecting portion 43, a limiting protrusion is provided on the inner wall of the U-shaped portion 42 so that the limiting protrusion can be inserted into the limiting groove 12.

[0050] The U-shaped portion 42 can move along the limiting groove 12 through the limiting protrusion, thereby providing a limit for the U-shaped portion 42, so that the U-shaped portion 42 is restricted in the limiting groove 12 and cannot be moved to other positions, which can avoid position displacement due to pressure or force, and at the same time, it can also more accurately locate the installation position of the U-shaped portion 42 and the position of the connecting portion 43 aligned with the cover 5, that is, the first penetration opening 41 and the second penetration opening 52 can be quickly aligned, thereby improving ease of use.

[0051] In some embodiments, reference Figure 5 As shown, the gel-like consumables are easily squeezed into the connection gap between the discharge piece 2 and the discharge body 1 during discharge. When cleaning, chemical products such as detergents are used to clean, which can easily corrode the print head.

[0052] Therefore, a separation portion 22 is provided on the discharge member 2, and the separation portion 22 is sleeved in the discharge hole 21. The separation portion 22 and the discharge hole 21 are sleeved, so the separation portion 22 separates the inner wall of the discharge hole 21 from the gel consumable, so that the gel consumable flows out along the outer surface of the separation portion 22 during discharge. The separation portion 22 can be a disposable consumable. After a single printing is completed, the separation portion 22 can be taken out from the discharge hole 21 and replaced with a new separation portion 22. When it is not a disposable consumable, the covering member 5 is separated from the discharge body 1, and the separation portion 22 is taken out from the discharge member 2. It is only necessary to clean the separation portion 22 with chemicals, and there is no need to bring the chemicals into contact with the discharge member 2.

[0053] Since the separation portion 22 separates the colloid consumables, the colloid consumables will not contact the discharge member 2, so the discharge member 2 does not need to be cleaned and does not need to contact with chemicals, thereby increasing the service life of the entire print head.

[0054] For further reference, Figure 6 As shown, the separation part 22 includes a connecting membrane 221, a first set of membranes 222 and a second set of membranes 223; the connecting membrane 221 is an annular cylindrical structure, the first set of membranes 222 and the second set of membranes 223 are respectively installed at both ends of the connecting membrane 221, and do not cover the openings at both ends of the connecting membrane 221, and the connecting membrane 221 is used to stick to the hole wall of the discharge hole 21 to separate the hole wall of the discharge hole 21 from the colloidal consumables, so that when the colloidal consumables are squeezed out of the discharge hole 21, they will not contact the hole wall of the discharge hole 21.

[0055] The connecting membrane 221 is close to the inner wall of the discharge hole 21, the first set of membranes 222 is close to one side of the discharge piece 2 next to the discharge hole 21, and the second set of membranes 223 is close to the other side of the discharge part next to the discharge hole 21. The first set of membranes 222 and the second set of membranes 223 are respectively used to block the two side walls next to the discharge hole 21, so as to reduce the gap between the connecting membrane 221 and the two sides of the discharge plate, so as to reduce the situation of the gel-like consumables being squeezed into the gap between the discharge piece 2 and the discharge body 1 during discharge. Even if it is squeezed into the gap, the separation part 22 can be easily disassembled for replacement or cleaning, which is more convenient than cleaning the discharge piece 2, and will not allow chemicals to contact the discharge piece 2, which is safer and improves the service life of the overall print head.

[0056] The first set of films 222 and the second set of films 223 also provide a clamping effect, which can prevent the separation portion 22 from being completely separated from the discharge hole 21 during the discharge process of the gel-like consumables.

[0057] Further, refer to Figure 7 As shown, since the colloidal consumables will exert a punching force on the separation part 22 during the discharge process, the separation part 22 is easily separated from the discharge hole 21 due to long-term force, so a fastening part 224 is set between the outer wall of the connecting membrane 221 and the first set of membranes 222.

[0058] A plurality of fastening parts 224 are provided, which are respectively arranged around the outer wall of the communicating membrane 221 . The fastening parts 224 can be fastening sheets or fastening frames.

[0059] A clamping cavity 23 is provided in the discharge piece 2. The clamping cavity 23 can be set to be annular, straight, etc. according to design requirements. This embodiment takes the annular clamping cavity 23 as an example. At the same time, the clamping cavity 23 is located on the side of the discharge piece 2 away from the discharge port 11, which can prevent glue-like consumables from entering the clamping cavity 23.

[0060] Only one cavity opening is set for a single snap-fit ​​cavity 23, and the cavity opening is matched with the fastening part 224. The snap-fit ​​cavity 23 is set in an annular shape, but it does not need to be a complete ring. It can also be a cavity structure with a partial annular arc. The cavity opening is matched with the fastening part 224, which means that the size and dimensions of the fastening part 224 are consistent with the cavity opening, so that the fastening part 224 can be inserted into the annular snap-fit ​​cavity 23 along the cavity opening.

[0061] Specifically, when the separation part 22 needs to be fastened and installed to avoid separation, the fastening part 224 is inserted into the cavity opening of the snap-in cavity 23. When inserted into the cavity wall of the snap-in cavity 23, it moves or rotates along the inner wall of the snap-in cavity 23, so that the fastening part 224 is staggered with the cavity opening, and the fastening part 224 cannot be detached from the snap-in cavity 23 from the cavity opening, so that the entire separation part 22 is clamped by the fastening part 224 to ensure the stable installation of the separation part 22. When the separation part 22 needs to be removed, the fastening part 224 is moved or rotated to the cavity opening of the snap-in cavity 23, so that the fastening part 224 can be detached from the cavity opening of the snap-in cavity 23, so that the separation part 22 can be separated from the discharge hole 21.

[0062] In another embodiment, reference Figure 8 As shown, a clamping portion 53 is further provided on the covering member 5; the clamping portion 53 is closely attached to the separating portion 22 and connected to the covering member 5, and the clamping portion 53 can adopt a clamping frame, and the clamping frame is provided with an inner groove, the groove height of the inner groove is consistent with the thickness of the covering member 5 and the connecting portion 43 after being superimposed, so that the clamping portion 53 can be inserted into the covering member 5 and the connecting portion 43 from the side, and the separating portion 22 is clamped at one end of the discharge member 2 to prevent the separating portion 22 from being separated under pressure.

[0063] Among them, a third penetration opening can be opened on the clamping part 53. After the bolt 31 passes through the second penetration opening 52, the first penetration opening 41 and the third penetration opening in sequence, it is screwed with the nut 32, so that the clamping part 53 is synchronously locked by the locking member 3 to prevent the clamping part 53 from detaching from the covering member 5.

[0064] Among them, the discharge piece 2 is located in the stepped opening 51, so the clamping part 53 can be provided with a fitting protrusion that fits the thickness of the stepped opening 51 to ensure that the clamping part 53 can extend into the stepped opening 51 to contact the separation part 22 and clamp the separation part 22 to limit it.

[0065] The present application also provides a printing device, which includes the above-mentioned print head. The print head does not need to be frequently replaced, thereby extending the service life of the printing device.

[0066] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A print head, It is characterized in that The device comprises a discharge body (1), a discharge member (2), a locking member (3), a connecting member (4) and a covering member (5); the discharge body (1) is provided with a discharge port (11); a plurality of connecting members (4) are provided and are sequentially connected to the side wall of the discharge body (1); the discharge member (2) covers the discharge port (11), and the discharge member (2) is provided with a plurality of discharge holes (21), and the discharge holes (21) are connected to the discharge port (11); The cover member (5) is provided with a stepped opening (51), and the cover member (5) covers the side of the discharge member (2) away from the discharge body (1); the discharge member (2) is located in the stepped opening (51), and the stepped opening (51) is communicated with the discharge hole (21); the locking member (3) passes through the cover member (5) and is connected to the connecting member (4), and the cover member (5) is locked with the discharge body (1) through the connecting member (4).

2. A print head according to claim 1, It is characterized in that The locking member (3) comprises a bolt (31) and a nut (32); the connecting member (4) is provided with a first penetration opening (41), the covering member (5) is provided with a second penetration opening (52), and the bolt (31) penetrates through the first penetration opening (41) and the second penetration opening (52) and is threadedly connected to the nut (32).

3. A print head according to claim 2, It is characterized in that The connecting piece (4) is detachably connected to the discharge body (1); the connecting piece (4) comprises a U-shaped portion (42) and a connecting portion (43); two connecting portions (43) are provided and are respectively located at two ends of the U-shaped portion (42); the first penetration opening (41) is opened in the connecting portion (43).

4. A print head according to claim 3, It is characterized in that The outer wall of the discharge body (1) is provided with a limiting groove (12), and the connecting member (4) is slidably connected to the discharge body (1) via the limiting groove (12).

5. A print head according to claim 1 or 4, It is characterized in that The discharge piece (2) is further provided with a separation portion (22); the separation portion (22) is sleeved in the discharge hole (21).

6. A print head according to claim 5, It is characterized in that The separation portion (22) comprises a connecting membrane (221), a first membrane (222) and a second membrane (223); the connecting membrane (221) is an annular cylindrical structure, the first membrane (222) and the second membrane (223) are respectively mounted at two ends of the connecting membrane (221) and do not cover the openings at both ends of the connecting membrane (221); the connecting membrane (221) is closely attached to the inner wall of the discharge hole (21), the first membrane (222) is closely attached to one side of the discharge piece (2) next to the discharge hole (21), and the second membrane (223) is closely attached to the other side of the discharge portion next to the discharge hole (21).

7. A print head according to claim 6, It is characterized in that A fastening portion (224) is provided between the outer wall of the connecting membrane (221) and the first sleeve membrane (222); a plurality of fastening portions (224) are provided, each of which is arranged around the outer wall of the connecting membrane (221); a clamping cavity (23) is provided in the discharge piece (2), and the cavity opening of the clamping cavity (23) matches the fastening portion (224).

8. A print head according to claim 5, It is characterized in that The covering member (5) is also provided with a pressing portion (53); the pressing portion (53) is closely attached to the separation portion (22) and is connected to the covering member (5).

9. A print head according to claim 1, It is characterized in that A pressing end (33) is provided at one end of the bolt (31), and the diameter of the pressing end (33) is greater than the straight-line distance between the second penetration opening (52) and the stepped opening (51).

10. A printing device, It is characterized in that The device comprises a print head according to any one of claims 1-9.

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