Clamping device and 3D printer

Abstract

The utility model discloses a clamping device and a 3D printer, which are mainly characterized in that a force application piece is arranged to apply an external force to a clamping assembly, so that the clamping force of the clamping assembly to a guide rail is in a suitable range, and the smooth movement of a functional piece is ensured. According to the main technical scheme, the clamping device comprises a fixing piece and a clamping piece, the clamping assembly is used for being movably connected with a guide rail of the 3D printer; the at least one force application piece is connected with the fixing piece and the clamping assembly, and the force application piece is used for applying external force to the clamping assembly; and the positioning piece is at least used for acting with the clamping assembly so as to fix the relative position of the fixing piece and the clamping assembly. The guide rail clamping device is mainly used for clamping guide rails.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a clamping device and a 3D printer. Background Art

[0002] In a 3D printer, guide rails and drive mechanisms are usually arranged to cooperate with each other to move functional parts such as a printing platform or a print head module. The functional parts roll and clamp the guide rails on opposite sides of the guide rails through rollers, and the drive mechanism is used to pull the functional parts to move. The guide rails support the functional parts and guide the movement of the functional parts.

[0003] When installing a 3D printer for the first time, or when replacing functional parts, rollers and other components, it is necessary to connect the rollers and guide rails, and adjust the roller positions so that the rollers can stably roll and clamp the guide rails. In the prior art, the rollers are usually adjusted manually, such as using a wrench to tighten the eccentric nut to move the rollers closer to or away from the guide rails. The manual adjustment method relies on user experience, and the force of clamping the guide rails is difficult to control, which can easily lead to excessive clamping force on the guide rails and increase the burden of movement, or insufficient clamping force causing the functional parts to vibrate, affecting printing accuracy. Utility Model Content

[0004] In view of this, in order to solve at least one of the above technical problems, the utility model provides a clamping device and a 3D printer.

[0005] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0006] On the one hand, the utility model provides a clamping device for a 3D printer, comprising:

[0007] Fixings;

[0008] At least one clamping assembly, the clamping assembly being used to flexibly connect to a guide rail of a 3D printer;

[0009] At least one force applying member, the force applying member is respectively connected to the fixing member and the clamping assembly, and the force applying member is used to apply external force to the clamping assembly;

[0010] At least one positioning member, the positioning member is at least used to act with the clamping assembly to fix the relative position of the fixing member and the clamping assembly.

[0011] On the other hand, the utility model also provides a 3D printer, comprising any one of the clamping devices described above.

[0012] The utility model proposes a clamping device and a 3D printer, which mainly applies an external force to the clamping assembly by setting a force-applying member, so that the clamping force of the clamping assembly on the guide rail is within an appropriate range, ensuring smooth movement of the functional parts. In the prior art, the adjustment of the roller is usually manual adjustment, which depends on the user's experience. The force of clamping the guide rail is not well controlled, which easily leads to excessive force of clamping the guide rail and increases the burden of movement, or insufficient clamping force causes the functional parts to vibrate, affecting the printing accuracy. Compared with the prior art, in the present application document, the clamping assembly clamps the guide rail, and the force-applying member and the guide rail apply mutually balanced external forces to the clamping assembly. The force-applying member applies an external force to the clamping assembly, so that the force of the clamping assembly squeezing the guide rail is a preset size, and then the force of clamping the guide rail is controlled, so that the clamping assembly will not over-squeeze the guide rail and make it difficult to move, and at the same time ensure that there will be no gap between the clamping assembly and the guide rail, avoiding vibration during the transmission of the functional parts. In addition, by setting a positioning member, the clamping force of the clamping assembly is locked to avoid the problem of loose clamping during printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a first clamping device provided by an embodiment of the utility model at a first viewing angle;

[0014] Figure 2 A schematic structural diagram of a first clamping device provided by an embodiment of the utility model at a second viewing angle;

[0015] Figure 3 A schematic structural diagram of a first clamping device provided by an embodiment of the utility model at a third viewing angle;

[0016] Figure 4 A schematic structural diagram of a first clamping device provided by an embodiment of the utility model at a fourth viewing angle;

[0017] Figure 5 A schematic diagram of the exploded structure of the first clamping device provided by the embodiment of the utility model;

[0018] Figure 6 A schematic cross-sectional view of the first clamping device provided in an embodiment of the utility model;

[0019] Figure 7 A schematic structural diagram of a first clamping device and a functional part provided by an embodiment of the utility model at a first viewing angle;

[0020] Figure 8 A schematic structural diagram of a first clamping device and a functional part provided by an embodiment of the utility model at a second viewing angle;

[0021] Fig. 9 A schematic diagram of the structure of a first clamping device, a functional part and a guide rail provided in an embodiment of the utility model;

[0022] Fig.10 A schematic structural diagram of a second clamping device provided by an embodiment of the utility model at a first viewing angle;

[0023] Fig.11 A schematic structural diagram of a second clamping device provided by an embodiment of the utility model at a second viewing angle;

[0024] Fig.12 A schematic structural diagram of a second clamping device provided by an embodiment of the utility model at a third viewing angle;

[0025] Fig.13 A schematic structural diagram of a second clamping device provided by an embodiment of the utility model at a fourth viewing angle;

[0026] Fig.14 A schematic diagram of the exploded structure of a second clamping device provided by an embodiment of the utility model;

[0027] Fig.15 A schematic cross-sectional view of a second clamping device provided in an embodiment of the utility model;

[0028] Fig.16 A schematic structural diagram of a second clamping device and a functional part provided by an embodiment of the utility model at a first viewing angle;

[0029] Fig.17 A schematic structural diagram of a second clamping device and a functional part provided by an embodiment of the utility model at a second viewing angle;

[0030] Fig.18 A schematic structural diagram of a second clamping device, functional parts and guide rails provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation method, structure, characteristics and effects of the clamping device proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0032] In order to achieve the above-mentioned purpose, the present invention mainly provides the following technical solutions:

[0033] On the one hand, if Figure 1-18 As shown, the embodiment of the utility model provides a clamping device for a 3D printer, comprising:

[0034] A fixing member 100;

[0035] At least one clamping assembly 200, the clamping assembly 200 is used to flexibly connect the guide rail 10 of the 3D printer;

[0036] At least one force applying member 300, the force applying member 300 is respectively connected to the fixing member 100 and the clamping assembly 200, and the force applying member 300 is used to apply external force to the clamping assembly 200;

[0037] At least one positioning member 400 is provided, and the positioning member 400 is at least used to act with the clamping assembly 200 to fix the relative position of the fixing member 100 and the clamping assembly 200 .

[0038] The clamping device can be used in any scenario in a 3D printer where a guide rail and a roller are used to guide the functional part 40. For example, the guide rail 10 of the 3D printer is an X-axis guide rail, the functional part 40 is a print head, the clamping device is connected to the print head, and is rollingly connected or slidingly connected to the X-axis guide rail, thereby guiding the print head. Alternatively, the guide rail 10 of the 3D printer is a Y-axis guide rail, the functional part 40 is a printing platform, the clamping device is connected to the printing platform, and is rollingly connected or slidingly connected to the Y-axis guide rail, thereby guiding the printing platform. Alternatively, the functional part 20 can also be a scraper, a detection head, an X-axis guide rail, etc., which are not listed one by one.

[0039] The connection between the fixing member 100 and the functional member 40 can be through a bolt connection, and can be connected to the plate rib of the functional member 40. The fixing member 100 can only play the role of connecting the force-applying member 300, or, in some embodiments, the fixing member 100 can also play the role of guiding and fixing the clamping assembly 200. The number of clamping assemblies 200 can be one or more, and the clamping assembly 200 can only abut against a single side of the guide rail 10. An additional fixed roller 30 is provided on the functional member 40 to cooperate with the clamping assembly 200 to clamp the guide rail 10. Alternatively, the number of clamping assemblies 200 is multiple, and multiple clamping assemblies 200 are located on opposite sides of the guide rail 10, and then clamp the guide rail 10. Alternatively, the functional member 40 is connected to at least two clamping devices, and at least two clamping devices are located on opposite sides of the guide rail 10, and then the clamping assemblies 200 on different sides cooperate to clamp the guide rail 10.

[0040] The positioning member 400 is used to fix the relative position of the fixing member 100 and the clamping assembly 200, or to fix the relative position of the clamping assembly 200 and the functional member 40. After the clamping assembly 200 is fixed, the squeezing force of the clamping assembly 200 on the guide rail 10 is fixed, thereby avoiding the problem of insufficient clamping force causing the functional member 40 to vibrate during the printing process. When it is necessary to adjust the position of the clamping assembly 200, first adjust the positioning member 400 so that the positioning member 400 releases the clamping assembly 200, and the clamping assembly 200 will move away from or close to the guide rail 10 under the action of the force member 300 until the force of the force member 300 and the guide rail 10 on the clamping assembly 200 are balanced, that is, when the squeezing force between the guide rail 10 and the clamping assembly 200 is an external force, the clamping assembly 200 stops moving. The adjustable positioning member 400 fixes the clamping assembly 200, and then locks the clamping force of the clamping assembly 200 on the guide rail 10. In this adjustment process, the clamping force is automatically adjusted to ensure the consistency of the clamping force adjustment, so that the clamping force is moderate. In addition, by setting the positioning member, the clamping force of the clamping assembly is locked to avoid the problem of loose clamping during the printing process.

[0041] The clamping device and 3D printer proposed in the embodiment of the utility model mainly apply external force to the clamping assembly by setting a force-applying member, so that the clamping force of the clamping assembly on the guide rail is within an appropriate range, ensuring smooth movement of the functional parts. In the prior art, the adjustment of the roller is usually manual adjustment, which depends on the user's experience. The force of clamping the guide rail is not well controlled, which easily leads to excessive force of clamping the guide rail and increases the burden of movement, or insufficient clamping force causes the functional parts to vibrate, affecting the printing accuracy. Compared with the prior art, in the present application document, the clamping assembly clamps the guide rail, and the force-applying member and the guide rail apply mutually balanced external forces to the clamping assembly. The force-applying member applies external force to the clamping assembly, so that the force of the clamping assembly squeezing the guide rail is a preset size, and then the force of clamping the guide rail is controlled, so that the clamping assembly will not over-squeeze the guide rail and make it difficult to move, and at the same time ensure that there will be no gap between the clamping assembly and the guide rail, avoiding vibration during the transmission of the functional parts.

[0042] The external force applied by the force-applying member 300 can be a fixed value or any value within a preset range. The floating of the external force within a smaller range can greatly reduce the clamping error and ensure that the clamping force is moderate compared to the manual clamping adjustment. The force-applying member 300 can be in various forms. For example, in an optional embodiment, the force-applying member 300 includes a driver and a pressure gauge. The driver is connected to the clamping assembly 200 through the pressure gauge. The driver drives the clamping assembly 200 to move, and then applies a fixed value of external force to the clamping assembly 200 through the feedback of the pressure gauge. Alternatively, in some embodiments, the force-applying member 300 includes an elastic member, which applies an elastic force within a preset range to the clamping assembly 200, thereby ensuring the clamping force. For example, the force-applying member 300 includes a spring, foam or soft rubber. For example, the force-applying member 300 includes at least one of a torsion spring, a tension spring and a compression spring, which is intended to apply an elastic force to the clamping assembly 200 to move toward one side of the guide rail 10.

[0043] In an optional embodiment, the connection method of the force-applying member 300 and the fixing member 100 includes at least one of abutment, hanging, plugging, clamping connection, welding, clamping, bonding and sleeve connection. The connection method of the force-applying member 300 and the clamping assembly 200 includes at least one of abutment, hanging, plugging, clamping connection, welding, clamping, bonding and sleeve connection.

[0044] In the embodiment where the force-applying member 300 is a spring, the force-applying member 300 can have a variety of different connections with the fixing member 100 and the clamping assembly 200 according to the location of the spring. If the spring is a compression spring, the spring is arranged between the fixing member 100 and the clamping assembly 200, and the force-applying member 300 can be in abutment with the fixing member 100 and the clamping assembly 200, so as to facilitate the disassembly, assembly and replacement of the force-applying member 300. In some optional embodiments, such as Fig.15 As shown, the fixing member 100 is provided with a first limiting column 130, and the end of the force applying member 300 is sleeved on the first limiting column 130. The clamping assembly 200 is provided with a second limiting column 260, and the end of the force applying member 300 is sleeved on the second limiting column 260. The first limiting column 130 and the second limiting column 260 play a role in positioning the force applying member 300, so as to prevent the force applying member 300 from being unstable and easy to slide when abutting against the fixing member 100 and the clamping assembly 200, and to prevent the position of the force applying member 300 from moving and causing fluctuations in the magnitude of the external force.

[0045] In order to ensure the stability of the position of the clamping assembly 200 when it moves and facilitate the position adjustment and positioning of the clamping assembly 200, in an optional embodiment, the clamping assembly 200 is slidably connected to the fixing member 100, and the fixing member 100 guides the clamping assembly 200, so that the clamping assembly 200 only moves in the direction of approaching or moving away from the guide rail 10. There can be many ways of sliding connection, and three optional embodiments are exemplified below:

[0046] First, the fixing member 100 is provided with one of the guide groove and the guide head, and the clamping assembly 200 is provided with the other of the guide groove and the guide head, and the guide head is slidably embedded in the guide groove. For example, the fixing member 100 is provided with a T-shaped groove, and the clamping assembly 200 is provided with a T-shaped head, and the T-shaped head is slidably embedded in the T-shaped groove.

[0047] Second, if Figure 10-15 As shown, a receiving cavity 101 is defined on the fixing member 100 , and at least a portion of the clamping assembly 200 is located in the receiving cavity 101 .

[0048] At least one end of the accommodating inner cavity 101 has an accommodating inner cavity opening, and the clamping assembly 200 is inserted into the accommodating inner cavity 101 through the accommodating inner cavity opening, and the accommodating inner cavity plays a protective role for the clamping assembly 200. In some optional embodiments, at least a portion of the clamping assembly 200 is slidably set into the accommodating inner cavity 101, and the clamping assembly 200 slides against the inner wall of the accommodating inner cavity 101, such as sliding against at least one pair of opposite inner walls of the accommodating inner cavity 101, and then the fixing member 100 guides the clamping assembly 200 through the accommodating inner cavity 101. In some optional embodiments, such as Figure 14-15 As shown, at least one supporting rib 140 is provided on the inner wall of the accommodating inner cavity 101, and the clamping assembly 200 slides against the supporting rib 140, thereby reducing the contact area between the clamping assembly 200 and the inner wall of the accommodating inner cavity 101, reducing the friction force, and making the clamping assembly 200 move more smoothly; at the same time, the supporting rib 140 can also play a guiding role for the clamping assembly 200, improving its movement stability. In an optional embodiment, a sliding groove matching the supporting rib 140 is provided on the clamping assembly 200, and the supporting rib 140 is embedded in the sliding groove, thereby guiding the movement of the clamping assembly 200.

[0049] Third, if Figure 1-6 As shown, the fixing member 100 is provided with an accommodating inner cavity 101 and a moving opening 102 . The clamping assembly 200 is partially located in the accommodating inner cavity 101 , and the clamping assembly 200 is slidably connected to the moving opening 102 .

[0050] The movable opening 102 is a long strip opening opened in the moving direction of the clamping assembly 200. The clamping assembly 200 can slide against the inner wall of the accommodating cavity 101, or can only slide against the movable opening 102 and be spaced from the inner wall of the accommodating cavity 101. In an optional embodiment, there are two movable openings 102, which are respectively opened on the side walls of the accommodating cavity 101 on opposite sides, thereby increasing the stability of the movement of the clamping assembly 200.

[0051] In the embodiment where the fixing member 100 is provided with an accommodating cavity 101, in order to facilitate the disassembly and assembly of the clamping assembly 200, the clamping assembly 200 can be embedded in the accommodating cavity 101 through the accommodating cavity opening portion of the accommodating cavity 101, and the portion embedded in the accommodating cavity 101 is limited. More specifically, in an optional embodiment, as Figure 14-15 As shown, a receiving cavity 101 is opened on the fixing member 100, a first limiting portion 210 is arranged on the clamping assembly 200, a second limiting portion 110 is arranged on the fixing member 100, a part of the structure of the clamping assembly 200 is located in the receiving cavity 101, and the first limiting portion 210 interacts with the second limiting portion 110 to restrict at least a part of the structure of the clamping assembly 200 to the receiving cavity 101.

[0052] It can be understood that the length of the accommodating cavity 101 in the moving direction of the clamping assembly 200 is greater than the length of the partial structure of the clamping assembly 200 extending into the accommodating cavity 101, thereby allowing the clamping assembly 200 to move in the accommodating cavity 101. The first limiting portion 210 and the second limiting portion 110 can be limited in a variety of ways, such as by bolts or by clamping. For example, one of the first limiting portion 210 and the second limiting portion 110 is an elastic clamp, and the other of the first limiting portion 210 and the second limiting portion 110 is a clamping slot or a fixed clamp. Figure 14-15 As shown. There are three first limiting portions 210, which are located on different sides of the clamping assembly 200, and the first limiting portion 210 is a fixed clamp. The second limiting portion 110 is an elastic clamp corresponding to the first limiting portion 210. When disassembling the clamping assembly 200, the first limiting portion 210 acts on the second limiting portion 110, and the second limiting portion 110 gives way to and limits the first limiting portion 210 by bouncing. Alternatively, in some embodiments, the first limiting portion 210 may be absent, and the edge of the clamping assembly 200 structure interacts with the second limiting portion 110.

[0053] Alternatively, the clamping assembly 200 may be installed by assembling the fixture 100 in a split manner. In an optional embodiment, the fixture 100 includes at least two sub-shells 120, which are connected to each other to at least enclose an accommodating cavity 101, and a portion of the structure of the clamping assembly 200 is located in the accommodating cavity 101.

[0054] like Figure 1-5As shown, the number of sub-shells 120 can be two, and the two sub-shells 120 are connected to each other, and part of the structure of the clamping assembly 200 is restricted therein. In the embodiment in which the aforementioned fixing member 100 includes a movable opening 102, the two sub-shells 120 also enclose the movable opening 102. Or in some embodiments, the sub-shells 120 can also be three, four, etc., which can be arranged as needed. A third limiting portion 121 is provided on one of the adjacent sub-shells 120, and a fourth limiting portion 122 is provided on the other sub-shell 120, and the adjacent sub-shells 120 are connected to each other through the third limiting portion 121 and the fourth limiting portion 122. There can be multiple ways of connecting the sub-shells 120, such as the third limiting portion 121 can be a bolt, the fourth limiting portion 122 can be a screw hole, and the sub-shells 120 are bolted. It can also be that the third limiting portion 121 is an elastic clamp, the fourth limiting portion 122 is a clamping slot or a fixed clamp, and the sub-shells 120 are clamped together, which can facilitate the disassembly and assembly of the sub-shells 120.

[0055] In an optional embodiment, the number of clamping assemblies 200 is only one, and the clamping assembly 200 is used to abut one side of the guide rail 10. The clamping force of the clamping assembly 200 is only adjusted by one side of the guide rail 10. Alternatively, in another optional embodiment, the number of clamping assemblies 200 is multiple, and multiple clamping assemblies 200 are used to abut the guide rail 10 from opposite sides of the guide rail 10, and then the upper clamping assembly 200 or the lower clamping assembly 200 of the guide rail 10 can be adjusted as needed.

[0056] In an optional embodiment, the clamping assembly 200 includes a moving part 220 and a clamping wheel 230, the force applying member 300 is connected to the moving part 220, the clamping wheel 230 is connected to the moving part 220, the clamping wheel 230 is used to movably connect the guide rail 10, and the positioning member 400 is used to connect to the moving part 220.

[0057] The clamping wheel 230 can rotate relative to the movable member 220, such as the clamping wheel 230 is rotatably connected to the movable member 220, or the clamping wheel 230 includes an inner ring and an outer ring, the inner ring is fixedly connected to the movable member 220, and the outer ring can rotate relative to the inner ring, thereby realizing that the clamping wheel 230 can rotate and roll to connect the guide rail 10. The movable member 220 is used to support the clamping wheel 230, and to adjust and fix the position of the clamping wheel 230. For example, the positioning member 400 is used to fix the relative position of the movable member 220 and the fixed member 100 to fix the position of the clamping wheel 230, and the movable member 220 and the fixed member 100 can be slidably connected, and then when the positioning member 400 releases the movable member 220, the movable member 220 can drive the clamping wheel 230 to move under the action of the force applying member 300, and then adjust the clamping force of the clamping wheel 230 on the guide rail 10.

[0058] In the embodiment where the fixing member 100 is provided with an accommodating inner cavity 101 , the clamping wheel 230 can interact with the guide rail 10 from outside the accommodating inner cavity 101 .

[0059] In an optional embodiment, Figure 10-15 As shown, the fixing member 100 is provided with an accommodating cavity opening and an accommodating cavity 101 communicating with the accommodating cavity opening, and at least a portion of the moving member 220 is located in the accommodating cavity 101. At least a portion of the clamping wheel 230 extends out of the accommodating cavity 101 from the accommodating cavity opening, so as to abut against the guide rail 10 from outside the accommodating cavity 101.

[0060] The moving member 220 may be completely located in the accommodating inner cavity 101 and slidably connected to the accommodating inner cavity 101, such as the aforementioned clamping assembly 200 is provided with a first limiting portion 210, the fixing member 100 is provided with a second limiting portion 110, a partial structure of the clamping assembly 200 is located in the accommodating inner cavity 101, and the first limiting portion 210 interacts with the second limiting portion 110 to restrict the partial structure of the clamping assembly 200 to the accommodating inner cavity 101. Alternatively, in the aforementioned embodiment in which the moving opening 102 is opened on the fixing member 100, the moving member 220 may be slidably connected to the moving opening 102. There may be two force applying members 300 , which are disposed between the moving member 220 and the bottom wall of the accommodating inner cavity 101 . The moving member 220 and the accommodating inner cavity 101 may be slidably connected, such as slidably abutting against the supporting rib 140 .

[0061] In an optional embodiment, the movable member 220 is provided with a wheel body clearance opening and a wheel body inner cavity 221 connected to the wheel body clearance opening, and the clamping assembly 200 also includes a pin 260, and the clamping wheel 230 is partially inserted into the wheel body inner cavity 221 through the wheel body clearance opening, and the pin 260 is connected to the clamping wheel 230 and the movable member 220.

[0062] The moving member 220 has a chamber structure, which, on the one hand, allows the moving member 220 to be slidably connected to the accommodating inner cavity 101 from more sides, such as from all sides, thereby increasing the stability of the movement of the moving member 220. On the other hand, both ends of the pin 260 can be connected to the moving member 220, thereby increasing the stability of the clamping wheel 230.

[0063] In an optional implementation, Figure 1-6As shown, the fixing member 100 is provided with a mounting opening 103 and an accommodating inner cavity 101 communicating with the mounting opening 103, and at least a part of the movable member 220 is located in the accommodating inner cavity 101. The clamping assembly 200 further includes a mounting member 240, and the clamping wheel 230 is located outside the accommodating inner cavity 101. The mounting member 240 is connected to the mounting opening 103, and the mounting member 240 is connected to the movable member 220 and the clamping wheel 230 respectively.

[0064] The movable member 220 may be partially located in the accommodating inner cavity 101, or may be completely located in the accommodating inner cavity 101. The clamping wheel 230 is completely located outside the accommodating inner cavity 101. The mounting member 240 may be a bolt, the nut of the mounting member 240 abuts against the clamping wheel 230, and the screw of the mounting member 240 passes through the inner ring of the clamping wheel 230, such as an interference fit. The screw of the mounting member 240 passes through the mounting opening 103 and is then screwed on the movable member 220. The mounting opening 103 is a long strip-shaped opening extending in the moving direction of the clamping assembly 200. The clamping wheel 230 is outside the accommodating inner cavity 101, which can reduce the volume of the fixing member 100, reduce the weight of the fixing member 100, and facilitate observation of the clamping wheel 230. There may be two force-applying members 300, which are arranged between the movable member 220 and the inner wall of the accommodating inner cavity 101. The moving member 220 and the accommodating inner cavity 101 may be connected in a sliding manner, or, in the embodiment where the moving opening 102 is provided on the fixing member 100 , the moving member 220 and the moving opening 102 may be connected in a sliding manner.

[0065] In an optional embodiment, the clamping assembly 200 further includes a pad column 250 , which is sleeved on the mounting member 240 , and is located between the moving member 220 and the clamping wheel 230 , and corresponds to the mounting opening 103 .

[0066] The setting of the pad column 250 facilitates the processing of the movable part 220 and completely limits the position of the clamping wheel 230 outside the installation opening 103. A certain gap is separated from the surface of the clamping wheel 230 and the fixed part 100 to avoid contact between the clamping wheel 230 and the fixed part 100, thereby preventing the clamping wheel 230 from rotating smoothly.

[0067] In some embodiments, the clamping wheel 230 can also interact with the guide rail 10 from inside the accommodating cavity 101. For example, in an optional embodiment, the fixing member 100 is provided with a guide rail socket and an accommodating cavity 101 connected to the guide rail socket, and at least a portion of the movable member 220 is located in the accommodating cavity 101. At least a portion of the clamping wheel 230 is located in the accommodating cavity 101, and the movable member 220 and the clamping wheel 230 may be completely located in the accommodating cavity 101. The guide rail socket is used to insert the guide rail 10, and the clamping wheel 230 is used to abut against the guide rail 10 from inside the accommodating cavity 101, which can then protect the contact position between the clamping wheel 230 and the guide rail 10 and prevent debris from entering between the clamping wheel 230 and the guide rail 10.

[0068] The positioning member 400 can fix the clamping assembly 200 or the moving member 220 on the fixing member 100, or can fix the clamping assembly 200 or the moving member 220 on the functional member 20. In an optional embodiment, Figure 10-15 As shown, the positioning member 400 is used to act with the fixing member 100 to fix the position of the clamping assembly 200. The fixing member 100 is provided with a first adjustment hole 104 and a receiving cavity 101 connected to the first adjustment hole 104, and the first adjustment hole 104 is a long strip hole extending in the moving direction of the clamping assembly 200. At least a part of the clamping assembly 200 is located in the receiving cavity 101, such as the moving member 220 is completely located in the receiving cavity 101. The positioning member 400 is connected to the first adjustment hole 104, and the first end of the positioning member 400 is screwed to the clamping assembly 200, such as being screwed to the screw hole on the moving member 220. The second end of the positioning member 400 is used to squeeze the fixing member 100, such as the nut of the positioning member 400 squeezes the outer wall of the fixing member 100 on the periphery of the first adjustment hole 104, so as to fix the position of the clamping assembly 200, or the position of the clamping wheel 230. When the clamping force of the clamping wheel 230 needs to be adjusted, the positioning member 400 is screwed and the positioning member 400 is separated from the outer wall of the fixing member 100, so that the moving member 220 can move in the accommodating inner cavity 101. When the squeezing force of the force applying member 300 and the guide rail 10 on the clamping wheel 230 is balanced, the moving member 220 stops moving, and the positioning member 400 is screwed in the opposite direction to fix the moving member 220.

[0069] In another optional implementation, if Figure 7-8As shown, the positioning member 400 is used to act with the functional member 20 connected to the guide rail 10 to fix the position of the clamping assembly 200. The fixing member 100 is provided with an accommodating inner cavity 101 and a movable opening 102, the clamping assembly 200 is partially located in the accommodating inner cavity 101, and the clamping assembly 200 is connected to the movable opening 102. More specifically, the movable member 220 may be partially located in the accommodating inner cavity 101, there are two movable openings 102, and they are located on the opposite side walls of the accommodating inner cavity 101, and the two ends of the movable member 220 extend out of the accommodating inner cavity 101 from the movable openings 102 respectively. A second adjustment hole 201 is provided in the area of ​​the clamping assembly 200 or the movable member 220 located outside the accommodating inner cavity 101. The positioning member 400 is connected to the second adjustment hole 201, and the first end of the positioning member 400 is used to be screwed to the functional member 20, such as being screwed to the supporting sheet metal on the functional member 20, and the nut at the second end of the positioning member 400 is used to squeeze the clamping assembly 200, such as squeezing the surface of the movable member 220 outside the second adjustment hole 201, so as to fix the position of the clamping assembly 200, or to fix the position of the clamping wheel 230. When it is necessary to adjust the clamping force of the clamping wheel 230, the positioning member 400 is screwed, and the positioning member 400 will be separated from the outer wall of the movable member 220, so that the movable member 220 can move in the accommodating cavity 101. Until the squeezing force of the force-applying member 300 and the guide rail 10 on the clamping wheel 230 is balanced, the movable member 220 stops moving, and the positioning member 400 is screwed in the reverse direction to fix the movable member 220. In an optional embodiment, as Figure 5 As shown, the movable member 220 has second adjustment holes 201 symmetrically in the area outside the accommodating cavity 101 , and the positioning member 400 locks and adjusts the movable member 220 through the two symmetrical second adjustment holes 201 , thereby making the movable member 220 more stable, thereby ensuring the stability of the clamping wheel 230 .

[0070] On the other hand, the utility model also provides a 3D printer, including any one of the above clamping devices, the clamping device may be one or more. The 3D printer includes any one of the above clamping devices, including the advantages of any one of the above clamping devices, which will not be repeated here.

[0071] In an optional embodiment, the 3D printer further comprises a guide rail 10 and a functional part 20, a clamping device is connected to the functional part 20, and the clamping device is rollingly connected or slidingly connected to the opposite sides of the guide rail 10. For example, the clamping device may include a plurality of clamping assemblies 200, and the clamping assemblies 200 are rollingly connected or slidingly connected to the opposite sides of the guide rail 10, respectively.

[0072] Or, if Fig. 9 , Figure 16-18 As shown, the 3D printer further comprises at least one fixed roller 30 , and the at least one fixed roller 30 cooperates with the clamping device to respectively rollingly connect or slide to opposite sides of the guide rail 10 .

[0073] The functional part 20 may be a print head, a printing platform, etc. as described in the aforementioned embodiment, or may be merely a supporting sheet metal, on which components may be connected as required. The guide rail 10 may be a profile bracket. The connection between the fixing part 100 of the clamping device and the functional part 20 may be a bolt connection. The clamping device may be a single one, which only clamps the bottom of the guide rail 10, and the fixed rollers 30 may be two, the two fixed rollers 30 are arranged at intervals, and clamp the top of the guide rail 10, and then the fixed rollers 30 cooperate with the clamping device to achieve a guiding effect on the movement of the functional part 20. Alternatively, the clamping device may be multiple, which are respectively rollingly connected or slidingly connected to the opposite sides of the guide rail 10.

[0074] The utility model also provides the following implementation modes:

[0075] Reference numeral 1. A clamping device for a 3D printer, comprising:

[0076] A fixing member 100;

[0077] At least one clamping assembly 200, the clamping assembly 200 is used to flexibly connect the guide rail 10 of the 3D printer;

[0078] At least one force applying member 300, the force applying member 300 is respectively connected to the fixing member 100 and the clamping assembly 200, and the force applying member 300 is used to apply external force to the clamping assembly 200;

[0079] At least one positioning member 400 is connected to at least the clamping assembly 200 to fix the relative position of the fixing member 100 and the clamping assembly 200 .

[0080] Reference numeral 2. A clamping device according to reference numeral 1, wherein:

[0081] The force applying member 300 includes an elastic member;

[0082] Alternatively, the force applying member 300 includes a spring;

[0083] Alternatively, the force applying member 300 includes at least one of a torsion spring, a tension spring and a compression spring.

[0084] Reference numeral 3. A clamping device according to reference numeral 1, wherein:

[0085] The connection method of the force applying member 300 and the fixing member 100 includes at least one of abutting, hanging, plugging, clamping, welding, clamping, bonding and sleeve connection;

[0086] And / or, the connection method between the force applying member 300 and the clamping assembly 200 includes at least one of abutment, hanging, plugging, clamping, welding, clamping, bonding and sleeve connection;

[0087] And / or, a first limiting column 130 is provided on the fixing member 100, and an end of the force applying member 300 is sleeved on the first limiting column 130;

[0088] And / or, a second limiting column 260 is disposed on the clamping assembly 200 , and an end portion of the force applying member 300 is sleeved on the second limiting column 260 .

[0089] Reference numeral 4. A clamping device according to reference numeral 1, wherein:

[0090] The clamping assembly 200 is slidably connected to the fixing member 100;

[0091] Alternatively, the fixing member 100 is provided with one of the guide groove and the guide head, the clamping assembly 200 is provided with the other of the guide groove and the guide head, and the guide head is slidably embedded in the guide groove;

[0092] Alternatively, the fixing member 100 is provided with an accommodating inner cavity 101, and at least a part of the clamping assembly 200 is slidably disposed in the accommodating inner cavity 101, and the clamping assembly slidably abuts against the inner wall of the accommodating inner cavity;

[0093] Alternatively, the fixing member 100 is provided with an accommodating inner cavity 101, at least a portion of the clamping assembly 200 is located in the accommodating inner cavity 101, at least one supporting rib 140 is provided on the inner wall of the accommodating inner cavity 101, and the clamping assembly 200 is in sliding contact with the supporting rib 140;

[0094] Alternatively, the fixing member 100 is provided with a communicating accommodating inner cavity 101 and a moving opening 102 , a portion of the clamping assembly 200 is located in the accommodating inner cavity 101 , and the clamping assembly 200 is slidably connected to the moving opening 102 .

[0095] Reference numeral 5. A clamping device according to reference numeral 1, wherein:

[0096] The fixing member 100 is provided with an accommodating inner cavity opening and an accommodating inner cavity 101 communicating with the accommodating inner cavity opening, and a part of the structure of the clamping assembly 200 extends into the accommodating inner cavity 101 through the accommodating inner cavity opening;

[0097] The clamping assembly 200 is provided with a first limiting portion 210, and the fixing member 100 is provided with a second limiting portion 110. The first limiting portion 210 interacts with the second limiting portion 110 to limit at least a part of the structure of the clamping assembly 200 in the accommodating inner cavity 101.

[0098] One of the first limiting portion 210 and the second limiting portion 110 is an elastic clamp, and the other of the first limiting portion 210 and the second limiting portion 110 is a clamping groove or a fixed clamp.

[0099] Reference numeral 6. A clamping device according to reference numeral 1, wherein:

[0100] The fixing member 100 includes at least two sub-shells 120, and the at least two sub-shells 120 are connected to each other to at least enclose an accommodating inner cavity 101, and a part of the structure of the clamping assembly 200 is located in the accommodating inner cavity 101;

[0101] A third limiting portion 121 is disposed on one of the adjacent sub-shells 120, a fourth limiting portion 122 is disposed on the other of the adjacent sub-shells 120, and the adjacent sub-shells 120 are connected to each other through the third limiting portion 121 and the fourth limiting portion 122;

[0102] The third limiting portion 121 includes a bolt, and the fourth limiting portion 122 includes a screw hole;

[0103] Alternatively, the third limiting portion 121 includes an elastic clamp, and the fourth limiting portion 122 includes a clamping groove or a fixed clamp.

[0104] Reference numeral 7. A clamping device according to reference numeral 1, wherein:

[0105] The number of the clamping assembly 200 is only one, and the clamping assembly 200 is used to connect one side of the guide rail 10;

[0106] Alternatively, there are multiple clamping assemblies 200 , and the multiple clamping assemblies 200 are used to connect the guide rail 10 at two opposite sides of the guide rail 10 .

[0107] Reference numeral 8. A clamping device according to reference numeral 1, wherein:

[0108] The clamping assembly 200 includes a moving member 220 and a clamping wheel 230 . The force applying member 300 is connected to the moving member 220 . The clamping wheel 230 is connected to the moving member 220 . The clamping wheel 230 is used to movably connect to the guide rail 10 . The positioning member 400 is used to connect to the moving member 220 .

[0109] Reference numeral 9. A clamping device according to reference numeral 8, wherein:

[0110] The fixed member 100 is provided with an accommodating inner cavity opening and an accommodating inner cavity 101 communicating with the accommodating inner cavity opening, and at least a part of the movable member 220 is located in the accommodating inner cavity 101;

[0111] At least a portion of the clamping wheel 230 extends out of the accommodating cavity 101 from the accommodating cavity opening, so as to abut against the guide rail 10 from outside the accommodating cavity 101 .

[0112] Reference numeral 10. The clamping device according to reference numeral 9, wherein:

[0113] The movable member 220 is provided with a wheel body clearance opening and a wheel body inner cavity 221 connected to the wheel body clearance opening. The clamping assembly 200 also includes a pin 260. The clamping wheel 230 is partially inserted into the wheel body inner cavity 221 through the wheel body clearance opening. The pin 260 is connected to the clamping wheel 230 and the movable member 220.

[0114] Reference numeral 11. A clamping device according to reference numeral 1, wherein:

[0115] The fixing member 100 is provided with a mounting opening 103 and an accommodating inner cavity 101 communicating with the mounting opening 103 , and at least a part of the moving member 220 is located in the accommodating inner cavity 101 ;

[0116] The clamping assembly 200 further includes a mounting member 240 . The clamping wheel 230 is located outside the accommodating inner cavity 101 . The mounting member 240 is inserted into the mounting opening 103 , and the mounting member 240 is connected to the moving member 220 and the clamping wheel 230 , respectively.

[0117] Reference numeral 12. A clamping device according to reference numeral 11, wherein:

[0118] The clamping assembly 200 further includes a pad column 250 , which is sleeved on the mounting member 240 . The pad column 250 is located between the moving member 220 and the clamping wheel 230 , and the pad column 250 corresponds to the mounting opening 103 .

[0119] Reference numeral 13. A clamping device according to reference numeral 1, wherein:

[0120] The fixing member 100 is provided with a guide rail socket and an accommodating inner cavity 101 communicating with the guide rail socket, and at least a part of the moving member 220 is located in the accommodating inner cavity 101;

[0121] At least a portion of the clamping wheel 230 is located in the accommodating inner cavity 101 . The guide rail insertion opening is used to insert the guide rail 10 , and the clamping wheel 230 is used to abut against the guide rail 10 from within the accommodating inner cavity 101 .

[0122] Reference numeral 14. A clamping device according to reference numeral 1, wherein:

[0123] The positioning member 400 acts with the fixing member 100 to fix the position of the clamping assembly 200;

[0124] The fixing member 100 is provided with a first adjustment hole 104 and an accommodating inner cavity 101 communicating with the first adjustment hole 104 , and at least a part of the clamping assembly 200 is located in the accommodating inner cavity 101 ;

[0125] The positioning member 400 is inserted into the first adjustment hole 104 , a first end of the positioning member 400 is screwed to the clamping assembly 200 , and a second end of the positioning member 400 is used to press the fixing member 100 to fix the position of the clamping assembly 200 .

[0126] Reference numeral 15. The clamping device according to reference numeral 1, wherein:

[0127] The positioning member 400 is used to act with the functional member 20 connected to the guide rail 10 to fix the position of the clamping assembly 200;

[0128] The fixing member 100 is provided with an accommodating inner cavity 101 and a moving opening 102. The clamping assembly 200 is partially located in the accommodating inner cavity 101, and the clamping assembly 200 is connected to the moving opening 102. A second adjusting hole 201 is provided in the area of ​​the clamping assembly 200 located outside the accommodating inner cavity 101.

[0129] The positioning member 400 is inserted into the second adjustment hole 201 , the first end of the positioning member 400 is used to be screwed to the functional member 20 , and the second end of the positioning member 400 is used to press the clamping assembly 200 to fix the position of the clamping assembly 200 .

[0130] Reference numeral 16. A clamping device according to reference numeral 15, wherein:

[0131] The clamping assembly 200 includes a moving member 220 and a clamping wheel 230, the force applying member 300 is connected to the moving member 220, the clamping wheel 230 is connected to the moving member 220, the clamping wheel 230 is used to movably connect the guide rail 10, and the positioning member 400 is used to connect to the moving member 220;

[0132] The moving member 220 is partially located in the accommodating inner cavity 101 , and the moving member 220 is connected to the moving opening 102 . The second adjusting holes 201 are symmetrically opened on the area of ​​the moving member 220 located outside the accommodating inner cavity 101 .

[0133] Label 17. A 3D printer, comprising a clamping device as described in any one of the above labels 1-16.

[0134] Reference number 18. A 3D printer according to reference number 17, wherein the 3D printer further comprises:

[0135] The guide rail 10 and the functional part 20, the clamping device is connected with the functional part 20;

[0136] The clamping device is rollingly connected or slidingly connected to the opposite sides of the guide rail 10;

[0137] Alternatively, the 3D printer further comprises at least one fixed roller 30 , and the at least one fixed roller 30 and the clamping device are respectively rollingly connected or slidingly connected to opposite sides of the guide rail 10 .

[0138] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A clamping device for a 3D printer, characterized in that: include: Fixings; At least one clamping assembly, the clamping assembly being used to flexibly connect to a guide rail of the 3D printer; At least one force-applying member, the force-applying member is respectively connected to the fixing member and the clamping assembly, and the force-applying member is used to apply an external force to the clamping assembly; At least one positioning member, wherein the positioning member is at least connected to the clamping assembly to fix the relative position of the fixing member and the clamping assembly.

2. The clamping device according to claim 1, characterized in that The force applying member includes an elastic member; Alternatively, the force applying member includes a spring; Alternatively, the force applying member includes at least one of a torsion spring, a tension spring and a compression spring.

3. The clamping device according to claim 1, characterized in that: The connection method between the force applying member and the fixing member includes at least one of abutment, hanging, plugging, clamping, welding, clamping, bonding and sleeve connection; And / or, the connection method between the force applying member and the clamping assembly includes at least one of abutment, hanging, plugging, clamping, welding, clamping, bonding and sleeve connection; And / or, a first limiting column is provided on the fixing member, and an end portion of the force applying member is sleeved on the first limiting column; And / or, a second limiting column is provided on the clamping assembly, and an end portion of the force applying member is sleeved on the second limiting column.

4. The clamping device according to claim 1, characterized in that: The clamping assembly is slidably connected to the fixing member; Alternatively, the fixing member is provided with one of a guide groove and a guide head, the clamping assembly is provided with the other of the guide groove and the guide head, and the guide head is slidably embedded in the guide groove; Alternatively, the fixing member is provided with an accommodating inner cavity, at least a part of the clamping assembly is slidably disposed in the accommodating inner cavity, and the clamping assembly is in slidable contact with the inner wall of the accommodating inner cavity; Alternatively, the fixing member is provided with an accommodating inner cavity, at least a part of the clamping assembly is located in the accommodating inner cavity, at least one supporting rib is provided on the inner wall of the accommodating inner cavity, and the clamping assembly is in sliding contact with the supporting rib; Alternatively, the fixing member is provided with a communicating accommodating inner cavity and a movable opening, the clamping component is partially located in the accommodating inner cavity, and the clamping component is slidably connected to the movable opening.

5. The clamping device according to claim 1, characterized in that: The fixing member is provided with an accommodating inner cavity opening and an accommodating inner cavity communicating with the accommodating inner cavity opening, and a part of the structure of the clamping assembly extends into the accommodating inner cavity through the accommodating inner cavity opening; The clamping assembly is provided with a first limiting portion, and the fixing member is provided with a second limiting portion, and the first limiting portion interacts with the second limiting portion to limit at least a part of the structure of the clamping assembly in the accommodating inner cavity; One of the first limiting portion and the second limiting portion is an elastic clamp, and the other of the first limiting portion and the second limiting portion is a clamping groove or a fixed clamp.

6. The clamping device according to claim 1, characterized in that: The fixing member comprises at least two sub-shells, and the at least two sub-shells are connected to each other to at least enclose an accommodating inner cavity, and a part of the structure of the clamping assembly is located in the accommodating inner cavity; A third limiting portion is provided on one of the adjacent sub-shells, a fourth limiting portion is provided on the other of the adjacent sub-shells, and the adjacent sub-shells are connected to each other through the third limiting portion and the fourth limiting portion; The third limiting portion includes a bolt, and the fourth limiting portion includes a screw hole; Alternatively, the third limiting portion includes an elastic clamp, and the fourth limiting portion includes a clamping groove or a fixed clamp.

7. The clamping device according to claim 1, characterized in that: The number of the clamping assembly is only one, and the clamping assembly is used to connect one side of the guide rail; Alternatively, there are multiple clamping assemblies, and the multiple clamping assemblies are used to connect the guide rail at opposite sides of the guide rail.

8. The clamping device according to claim 1, characterized in that: The clamping assembly comprises a moving part and a clamping wheel, the force applying part is connected to the moving part, the clamping wheel is connected to the moving part, the clamping wheel is used for movably connecting to the guide rail, and the positioning part is used for connecting to the moving part.

9. The clamping device according to claim 8, characterized in that The fixed member is provided with an accommodating inner cavity opening and an accommodating inner cavity communicating with the accommodating inner cavity opening, and at least a part of the movable member is located in the accommodating inner cavity; At least a part of the clamping wheel extends out of the accommodating inner cavity from the opening of the accommodating inner cavity so as to abut against the guide rail from outside the accommodating inner cavity.

10. The clamping device according to claim 9, characterized in that The movable part is provided with a wheel body clearance opening and a wheel body inner cavity connected with the wheel body clearance opening. The clamping assembly also includes a pin shaft. The clamping wheel is partially inserted into the wheel body inner cavity through the wheel body clearance opening. The pin shaft is connected to the clamping wheel.

11. The clamping device according to claim 8, characterized in that The fixing member is provided with a mounting opening and a receiving inner cavity communicated with the mounting opening, and at least a part of the moving member is located in the receiving inner cavity; The clamping assembly also includes a mounting member, the clamping wheel is located outside the accommodating inner cavity, the mounting member is connected to the mounting opening, and the mounting member is respectively connected to the moving member and the clamping wheel.

12. The clamping device according to claim 11, characterized in that The clamping assembly also includes a pad column, which is sleeved on the mounting member, located between the moving member and the clamping wheel, and corresponds to the mounting opening.

13. The clamping device according to claim 8, characterized in that The fixed member is provided with a guide rail socket and a receiving inner cavity communicated with the guide rail socket, and at least a part of the movable member is located in the receiving inner cavity; At least a partial area of ​​the clamping wheel is located in the accommodating inner cavity, the guide rail insertion opening is used to insert the guide rail, and the clamping wheel is used to abut against the guide rail from within the accommodating inner cavity.

14. The clamping device according to claim 1, characterized in that The positioning member acts with the fixing member to fix the position of the clamping assembly; The fixing member is provided with a first adjustment hole and an accommodating inner cavity communicated with the first adjustment hole, and at least a part of the clamping assembly is located in the accommodating inner cavity; The positioning member is inserted into the first adjustment hole, the first end of the positioning member is screwed to the clamping assembly, and the second end of the positioning member is used to squeeze the fixing member to fix the position of the clamping assembly.

15. The clamping device according to claim 1, characterized in that The positioning member is used to act with the functional member connected to the guide rail to fix the position of the clamping assembly; The fixing member is provided with an accommodating inner cavity and a movable opening, the clamping component is partially located in the accommodating inner cavity, and the clamping component is connected to the movable opening, and a second adjustment hole is provided in the area of ​​the clamping component located outside the accommodating inner cavity; The positioning member is connected to the second adjustment hole, the first end of the positioning member is used to be screwed to the functional member, and the second end of the positioning member is used to squeeze the clamping assembly to fix the position of the clamping assembly.

16. The clamping device according to claim 15, characterized in that The clamping assembly comprises a moving member and a clamping wheel, the force applying member is connected to the moving member, the clamping wheel is connected to the moving member, the clamping wheel is used for movably connecting to the guide rail, and the positioning member is used for connecting to the moving member; The moving member is partially located in the accommodating inner cavity, and the moving member is connected to the moving opening. The second adjusting holes are symmetrically opened on the area of ​​the moving member located outside the accommodating inner cavity.

17. A 3D printer, characterized in that: Comprising a clamping device as claimed in any one of claims 1 to 16 above.

18. The 3D printer according to claim 17, characterized in that: The 3D printer also includes: A guide rail and a functional part, wherein the clamping device is connected to the functional part; The clamping device is rollingly connected or slidingly connected to the opposite sides of the guide rail; Alternatively, the 3D printer further comprises at least one fixed roller, and the at least one fixed roller and the clamping device are respectively rollingly connected or slidingly connected to opposite sides of the guide rail.

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