Extrusion mechanism and three-dimensional forming equipment

Abstract

The utility model discloses an extrusion mechanism and three-dimensional forming equipment, which mainly realizes adjustment of elastic force applied to a driven wheel assembly by an elastic piece through an adjusting assembly, further adjusts clamping force to consumables, and avoids slipping caused by insufficient clamping force and consumable damage caused by excessive extrusion. According to the main technical scheme, the extrusion mechanism is used for the three-dimensional forming equipment and comprises an extrusion mechanism main body, the driving wheel is connected with the extrusion mechanism main body; the driven wheel assembly is movably connected with the extrusion mechanism main body, and the driven wheel assembly is used for being matched with the driving wheel so as to extrude and convey the consumables; the two ends of the elastic piece are connected with the driven wheel assembly and the adjusting assembly respectively, and the adjusting assembly is used for moving under the action of external force so as to adjust the force of the driven wheel assembly for extruding the consumables through the elastic piece. The consumable conveying device is mainly used for conveying consumables.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field especially relates to a kind of extrusion mechanism and solid forming equipment. BACKGROUND

[0002] FDM printer supplies material with filamentous consumables, and consumables are transmitted by extrusion mechanism, and after heating and melting, they are sprayed to printing platform by nozzle. By driving the relative movement of print head and printing platform, consumables are sprayed according to the contour of the model of this layer, and in this way, they are stacked layer by layer to realize solid forming.

[0003] The extruder usually includes a driving wheel and a driven wheel, the driving wheel is connected to a driving member, and the driven wheel is connected to a resilient member. The driven wheel is pressed against the driving wheel to extrude the consumables under the action of the resilient member, and then pushes the consumables to move when the driving wheel rotates. The elastic force of the existing resilient member is not adjustable, and the pressure of the driven wheel cannot be adjusted according to the size of the consumables. Moreover, when the elasticity of the resilient member decreases after long use, the spring elasticity cannot be adjusted, which leads to insufficient clamping force of the consumables and easy slippage of the consumables. SUMMARY

[0004] Therefore, in order to solve at least one of the above technical problems, the utility model provides an extrusion mechanism and a solid forming equipment.

[0005] To achieve the above purpose, the utility model mainly provides the following technical scheme:

[0006] On the one hand, the utility model provides an extrusion mechanism, which comprises:

[0007] An extrusion mechanism body;

[0008] A driving wheel connected to the extrusion mechanism body;

[0009] A driven wheel assembly for cooperating with the driving wheel to extrude and transmit consumables;

[0010] A resilient member and an adjusting assembly, both ends of the resilient member are connected to the driven wheel assembly and the adjusting assembly respectively, and the adjusting assembly is used to move under the action of external force to adjust the force of the driven wheel assembly extruding the consumables through the resilient member.

[0011] On the other hand, the utility model also provides a solid forming equipment, which comprises the extrusion mechanism of any one of the above.

[0012] The utility model provides an extrusion mechanism and solid forming equipment, mainly through the both ends of elastic part are connected with driven wheel subassembly and adjusting assembly respectively, and then the elastic force of extruding consumables is applied to driven wheel subassembly, through the movement of adjusting assembly, the elastic force of elastic part applied on driven wheel subassembly is realized adjusting, like when consumables are thicker, the length of elastic part is increased by moving adjusting assembly, and then the elastic force of elastic part is reduced when consumables are conveying, and then it avoids that the pressure of consumables is too large to cause the pressure deformation or the poor delivery of consumables, or when the natural length of elastic part is shortened after long time use, the length of elastic part can be shortened by moving adjusting assembly, and the extrusion strength of consumables is avoided being insufficient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the explosion structure schematic diagram of the first extrusion mechanism provided by the utility model embodiment;

[0014] Figure 2 It is the explosion structure schematic diagram of the second extrusion mechanism provided by the utility model embodiment;

[0015] Figure 3 It is the explosion structure schematic diagram of the third extrusion mechanism provided by the utility model embodiment. DETAILED DESCRIPTION

[0016] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes, the specific implementation, structure, features and effects of the extrusion mechanism according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0017] On the one hand, as shown in the utility model embodiment provides an extrusion mechanism, comprising: Figures 1-3

[0018] Extrusion mechanism main body 100;

[0019] Driving wheel, driving wheel is connected with extrusion mechanism main body 100;

[0020] Driven wheel subassembly, driven wheel subassembly is used for cooperating with driving wheel to extrude and convey consumables;

[0021] Elastic piece 300 and adjusting assembly 400, the both ends of elastic piece 300 are connected with driven wheel subassembly and adjusting assembly 400 respectively, and adjusting assembly 400 is used to move under the action of external force to adjust the strength of driven wheel subassembly extruding consumables through elastic piece 300.

[0022] ​The extrusion mechanism can be a separate mechanism, which can be arranged between the consumable disc and the print head. After the consumable passes through the extrusion mechanism, it is introduced into the housing of the print head through the transmission pipe of the print head and the like, and then heated and the like. In this embodiment, the extrusion mechanism body 100 refers to the support structure such as the housing of the extrusion mechanism, and can also include driving and transmission mechanisms and the like for realizing the extrusion function. Alternatively, the extrusion mechanism can also be integrated inside the print head as part of the print head. The extrusion mechanism body 100 can refer to the print head body, which includes the support structure such as the housing of the print head, and can also include the throat, the heat dissipation member, the heating member, the driving member, and the nozzle and the like. The driving wheel is directly or indirectly connected to the driving member through a transmission mechanism. The driving wheel can be a gear, a D-shaped wheel or the like, which is used to rotate under the drive of the driving member to provide power for the transmission of the consumable. The driven wheel assembly at least includes a driven wheel, which can be the same as or different from the driving wheel, such as different types or different sizes. The driven wheel and the driving wheel are arranged in parallel with the same axis, and the wheel rim is used to extrude the consumable. When the driving wheel pushes the consumable to move, the driven wheel is passively rotated to smoothly convey the consumable.

[0023] The elastic member 300 can be directly connected to the roller shaft of the driven wheel; alternatively, in an optional embodiment, the driven wheel assembly further includes an adjusting handle 200, the driven wheel is rotationally connected to the adjusting handle 200, and the elastic member 300 is connected to the adjusting handle 200 to apply an external force to the driven wheel by acting on the adjusting handle 200. The adjusting handle 200 can not be connected to the extrusion mechanism body 100, but only connected through the elastic member 300; alternatively, in some optional embodiments, the adjusting handle 200 can be movably connected to the extrusion mechanism body 100 to increase the stability of the driven wheel assembly. The connection between the adjusting handle 200 and the extrusion mechanism body 100 is intended to move the driven wheel closer to or farther away from the driving wheel under the action of the elastic member 300 or external force. For example, the adjusting handle 200 can be rotationally connected to the extrusion mechanism body 100, such as the first end of the adjusting handle 200 being rotationally connected to the extrusion mechanism body 100, the elastic member 300 being connected between the first end and the second end of the adjusting handle 200, and the driven wheel being located between the position where the elastic member 300 is connected to the adjusting handle 200 and the first end of the adjusting handle 200, thereby ensuring that the force arm of the elastic member 300 is sufficient to ensure the elastic force application effect. Alternatively, in another optional embodiment, the adjusting handle 200 can be slidingly connected to the extrusion mechanism body 100, such as a sliding groove being formed on the extrusion mechanism body 100 and extending in the direction of approaching or moving away from the driving wheel, and the adjusting handle 200 being embedded in the sliding groove to move the driven wheel. Alternatively, there can be other embodiments, which are not described here. In some optional embodiments, the adjusting handle 200 can partially extend out of the extrusion mechanism body 100, so that an external force can be manually applied to make the driven wheel separate from the driving wheel, thereby facilitating the consumable to pass in.

[0024] The connection between the elastic member 300 and the adjusting handle 200 can be abutment, for example, a limiting groove can be formed on the adjusting handle 200, and the elastic member 300 is embedded in the limiting groove, thereby facilitating disassembly and avoiding sliding movement of the elastic member 300; or the elastic member 300 and the adjusting handle 200 can be bonded, clamped or connected in other detachable manners.

[0025] The adjusting assembly 400 is used to adjust the extrusion force of the driven wheel on the consumable by extruding the elastic member 300 to different degrees, thereby changing the position or length of the elastic member 300. The elastic member 300 can be various, for example, a spring such as a compression spring, or foam, rubber, etc. The adjusting assembly 400 can adjust the elastic member 300 in various ways, for example, by rotating a bolt to push the elastic member 300 and change the length of the elastic member 300, or by rotating an eccentric wheel to push the elastic member 300 and change the length of the elastic member 300, or by moving a sliding block to push the elastic member 300 and change the length of the elastic member 300, thereby changing the elasticity of the elastic member 300 and adjusting the increase or decrease of the extrusion force on the consumable.

[0026] The extrusion mechanism and the three-dimensional forming equipment provided by the embodiment of the utility model mainly through the two ends of elastic member are connected with driven wheel assembly and adjusting assembly respectively, then the elastic force of extruding consumable is applied to driven wheel assembly, through the movement of adjusting assembly, the elastic force of elastic member applied to driven wheel assembly is adjusted, for example, when the consumable is thick, the length of elastic member is increased by moving adjusting assembly, then the elastic force of elastic member is reduced when the consumable is transmitted, then the pressure of consumable is avoided to be too large to cause the deformation of consumable or the poor transmission of consumable; or when the natural length of elastic member is shortened after long use, the length of elastic member is shortened by moving adjusting assembly, and the extrusion force on the consumable is avoided to be insufficient.

[0027] In an optional embodiment, the extrusion mechanism body 100 includes an inner cavity 101 and an adjusting hole 102, and the adjusting hole 102 communicates with the inner cavity 101. The elastic member 300 is located in the inner cavity 101, and at least part of the structure of the adjusting assembly 400 is located in the adjusting hole 102 or opposite to the adjusting hole 102, so as to apply an external force to the adjusting assembly 400 through the adjusting hole 102.

[0028] At least part of the structure of the aforementioned adjustment handle 200, the driving wheel, and the driven wheel are all located in the inner cavity 101, which is used to protect the various components, such as preventing debris from affecting the transmission of consumables. A retractable cover can be provided on the extrusion mechanism body 100, thereby realizing the optional opening and closing of the inner cavity 101 for installing and replacing the various components in the inner cavity 101. The adjustment hole 102 can be located on the side wall of the extrusion mechanism body 100 when in use. The adjustment component 400 can be located as a whole in the inner cavity 101, and the position for applying external force can be opposite to the adjustment hole 102, such as the nut of the bolt in the adjustment component 400 can be opposite to the adjustment hole 102 in the axial direction of the adjustment hole 102, and then the bolt can be tightened by inserting a screwdriver into the adjustment hole 102. Alternatively, the position of the adjustment component 400 for applying external force can be located inside the adjustment hole 102, or the position of the adjustment component 400 for applying external force can be located outside the extrusion mechanism body 100, thereby facilitating the application of external force.

[0029] The following examples illustrate several optional implementations of the adjustment assembly 400. For ease of explanation, the following example uses the elastic member 300 as a spring. It is understood that the implementations of the adjustment assembly 400 are not limited to the following, and the elastic member 300 may also be in other forms:

[0030] First, the adjustment assembly 400 includes a bolt. The adjustment hole 102 is a threaded hole, and the bolt is threadedly connected to the adjustment hole 102. The elastic member 300 is connected to the bolt.

[0031] The outer diameter of the bolt is larger than the inner diameter of the elastic member 300, so that the elastic member 300 can abut against the end of the bolt. When the bolt is screwed into the inner cavity 101, the elastic member 300 is further compressed, thereby increasing its elasticity. When the bolt is screwed out of the inner cavity 101, the degree of compression of the elastic member 300 is reduced, thereby reducing its elasticity.

[0032] Second, if Figure 1 As shown, the adjustment assembly 400 includes a first nut 410 and a first threaded member 420. The first nut 410 is located in the inner cavity 101 and is fixedly connected to the extrusion mechanism body 100. The first threaded member 420 is movably connected to the adjustment hole 102 and is threadedly connected to the first nut 410. The elastic member 300 is connected to the first threaded member 420.

[0033] In order to avoid the situation where the adjustment hole 102 cannot be processed into a threaded hole due to the limitation of the wall thickness of the extrusion mechanism body 100 and the limitation of processing accuracy, the adjustment hole 102 can be set as an ordinary opening, and the adjustment of the first threaded member 420 can be achieved by fixing the first nut 410 in the inner cavity 101.

[0034] The connection between the elastic member 300 and the first threaded member 420 can be abutting, sleeving or inserting, similar to the bolt member, the outer diameter of the first threaded member 420 is greater than the inner diameter of the elastic member 300, and then the elastic member 300 can abut the end of the first threaded member 420. When the first threaded member 420 is screwed into the inner cavity 101, the elastic member 300 will be further compressed, and then the elasticity will increase. When the first threaded member 420 is screwed out of the inner cavity 101, the compression degree of the elastic member 300 decreases, and then the elasticity decreases.

[0035] In some optional embodiments, the side of the first threaded member 420 for contacting the spring is provided with a protrusion 421, and the spring is sleeved on the protrusion 421, so that the position of the spring is stable and not easy to be detached from the first threaded member 420. Similarly, the foregoing embodiments of the bolt member can also be provided with a protruding structure for fixing the spring. The first threaded member 420 and the foregoing bolt member can both be a stud, and then the end of the stud towards the inner cavity 101 can be located in the adjusting hole 102 and not protrude from the extrusion mechanism body 100, avoiding affecting the appearance and avoiding being touched by mistake.

[0036] The fixing connection between the first nut 410 and the extrusion mechanism body 100 can be various, such as bonding, extruding or inserting, embedded connection and the like. As an optional embodiment, as shown in Figure 1 the extrusion mechanism body 100 includes a first slot 103, the first slot 103 is opened in the inner cavity 101, the adjusting hole 102 is located on the side wall of the first slot 103, and a clearance hole is opened on the inner wall of the first slot 103 opposite to the inner cavity 101 to communicate with the inner cavity 101. When the extrusion mechanism body 100 includes a cover shell that can be opened and closed, the first slot 103 has a first installation opening in the direction towards the cover shell, the first nut 410 is embedded in the first slot 103 through the first installation opening, and then the cover shell can be closed, and the cover shell cooperates with the first slot 103 to limit the first nut 410. The first nut 410 can be a hexagonal nut, and a pair of opposite edges of the hexagonal nut respectively abut the slot bottom of the first slot 103 away from the cover shell and the cover shell, and a pair of opposite corners of the hexagonal nut respectively abut the side wall of the first slot 103, thereby limiting the radial and circumferential movement of the hexagonal nut. The axial end faces of the hexagonal nut respectively abut the side wall of the first slot 103, thereby limiting the axial movement of the hexagonal nut.

[0037] In an optional embodiment, the inner diameter of the first nut 410 and the inner diameter of the adjusting hole 102 are both greater than the maximum outer diameter of the elastic member 300.

[0038] When the elastic member 300 is installed or replaced, the elastic member 300 can pass through the adjusting hole 102 and the first nut 410 without opening the cover shell and without disassembling the first nut 410, facilitating installation, maintenance and replacement. In the embodiment in which the adjusting hole 102 is a threaded hole, the elastic member 300 can also be installed and disassembled through the adjusting hole 102.

[0039] Thirdly, as shown in Figure 2 The adjusting assembly 400 includes a second nut 430 and a second threaded member 440. The second nut 430 is located in the inner cavity 101 and is in sliding connection with the extrusion mechanism body 100 in the axial direction of the second nut 430 and is limited in the circumferential direction of the second nut 430. The second threaded member 440 is movably connected to the adjusting hole 102 and is threadedly connected to the second nut 430. The second threaded member 440 is limited in the axial direction of the second threaded member 440 with the extrusion mechanism body 100. The elastic member 300 is connected with the second nut 430.

[0040] The axial position of the second threaded member 440 is fixed, and when the second threaded member 440 is rotated, the second nut 430 will be pushed to move in the axial direction through the thread. When the second nut 430 moves towards the driven wheel, the elastic member 300 will be further compressed, and the elasticity will increase. When the second nut 430 moves away from the driven wheel, the compression degree of the elastic member 300 decreases, and the elasticity decreases.

[0041] The way in which the second threaded member 440 is limited in the axial direction of the second threaded member 440 with the extrusion mechanism body 100 can be various. In an alternative embodiment, a limiting groove 441 can be provided on the second threaded member 440, and the adjusting hole 102 is an opening through one side of the cover shell. When the second threaded member 440 is installed in the adjusting hole 102, the edge of the adjusting hole 102 is embedded in the limiting groove 441 of the second threaded member 440, and the axial position of the second threaded member 440 is limited. Alternatively, in another alternative embodiment, the extrusion mechanism further includes a stop piece 500 connected with the extrusion mechanism body 100 and embedded in the limiting groove 441 to limit the axial movement of the second threaded member 440. The stop piece 500 can move relative to the extrusion mechanism body 100. After the second threaded member 440 is installed in place, the stop piece 500 limits the second threaded member 440 by being embedded in the limiting groove 441, preventing the second threaded member from moving backward or forward when the second threaded member is rotated, and thereby pushing the second nut 430 to move in the axial direction. The stop piece 500 can be in sliding connection, rotational connection or elastic connection with the extrusion mechanism body 100. The stop piece 500 can be a plate structure, a strip structure or other irregular structure, as long as it can be moved and embedded in the limiting groove 441.

[0042] In an alternative embodiment, as shown in Figure 2As shown, the extrusion mechanism body 100 is provided with a second slot 104 , and the blocking member 500 is provided with a notch 501 . The blocking member 500 is inserted into the second slot 104 , and the blocking member 500 is embedded in the limiting groove 441 through the notch 501 .

[0043] The second slot 104 is provided in the inner cavity 101, and the adjustment hole 102 is located on a side wall of the second slot 104. A clearance hole is provided on the inner wall of the second slot 104 opposite to the inner cavity 101 to communicate with the inner cavity 101. When the extrusion mechanism body 100 includes an openable and closable cover shell, the second slot 104 has a second mounting opening in the direction toward the cover shell, and the stopper 500 is inserted into the second slot 104 through the second mounting opening, with the edge of the notch 501 inserted into the limiting groove 441. The cover shell can then be closed, and the cover shell and the second slot 104 cooperate to limit the stopper 500. By adopting the stopper 500, the end of the second threaded member 440 used for applying external force can be located in the adjustment hole 102, preventing the second threaded member 440 from being exposed.

[0044] The second nut 430 and the extrusion mechanism body 100 can be circumferentially limited by providing a sliding groove within the extrusion mechanism body 100, or by providing a sliding hole in the extrusion mechanism body 100, with the axial ends of the sliding hole respectively intersecting the adjustment hole 102 and the inner cavity 101. Alternatively, in an embodiment including a second slot 104, the axial ends of the sliding hole respectively intersecting the second slot 104 and the inner cavity 101, thereby allowing the second threaded member 440 to pass through the adjustment hole 102 and the second slot 104 in sequence, then be inserted into the sliding hole, and be threadedly engaged with the second nut 430. The inner wall shape of the sliding hole is adapted to the outer wall shape of the second nut 430. For example, the second nut 430 can be a hexagonal nut, and the sliding hole is a hexagonal prism-shaped hole. The second nut 430 is inserted into the sliding hole, and the sliding hole then limits the circumferential position of the second nut 430. The second nut 430 can also move axially along the sliding hole, ensuring that the second nut 430 moves stably and is not prone to shaking. The end of the elastic member 300 is embedded in the sliding hole to connect with the second nut 430. In addition, the elastic member 300 is sleeved on the second threaded member 440. The limiting of the sliding hole and the second threaded member 440 ensures that the elastic member 300 is stably connected to the second nut 430 and is not easy to slip off the second nut 430.

[0045] Fourth, if Figure 3 As shown, the adjustment assembly 400 includes a third nut 450 and a third threaded member 460. The third threaded member 460 is located in the inner cavity 101 and is fixedly connected to the extrusion mechanism body 100. The third nut 450 is movably connected to the adjustment hole 102 and is threadedly sleeved on the third threaded member 460. The elastic member 300 is connected to the third nut 450.

[0046] The third threaded part 460 is fixed in position and then moves axially by thread action when the third nut 450 is rotated, and the elastic member 300 is compressed when the third nut 450 moves towards the inside of the inner cavity 101, and then the elasticity increases, and the compression degree of the elastic member 300 decreases when the third nut 450 moves towards the outside of the inner cavity 101, and then the elasticity decreases.

[0047] The third threaded part 460 and the extrusion mechanism body 100 can be fixedly connected in a manner of bonding, clamping, embedded connection, etc., which aims to ensure that the third threaded part 460 is fixed in position. In an optional embodiment, a third insertion slot 105 is formed on the extrusion mechanism body 100, and the nut of the third threaded part 460 is embedded in the third insertion slot 105. When the extrusion mechanism body 100 includes a cover that can be opened and closed, the third insertion slot 105 has a third installation opening in the direction towards the cover, and the nut of the third threaded part 460 is embedded in the third threaded part 460 through the third installation opening, and then the cover can be closed, and the cover and the third insertion slot 105 cooperate to limit the nut of the third threaded part 460. For example, the third threaded part 460 is a hexagonal bolt, and a pair of opposite edges of the hexagonal nut respectively abut the slot bottom of the third insertion slot 105 away from the cover and the cover, and a pair of opposite corners of the hexagonal nut respectively abut the side walls of the third insertion slot 105, thereby limiting the radial and circumferential movement of the hexagonal nut. The axial end faces of the hexagonal nut respectively abut the side walls of the third insertion slot 105, thereby limiting the axial movement of the hexagonal nut. The third nut 450 can be a blind hole press-in nut column, so as to facilitate the application of external force for screwing.

[0048] The third threaded part 460 can be located on only one side of the driven wheel assembly, and the third nut 450 is large enough to ensure that there is a projection overlap area in the axial direction of the third nut 450 with the adjustment handle 200, and the elastic member 300 can be arranged. Alternatively, in an optional embodiment, the third threaded part 460 is movably connected to the driven wheel assembly, such as the adjustment handle 200, and then the spring can be sleeved on the third threaded part 460, so that the position of the spring is more stable, and the force applied to the adjustment handle 200 is more balanced.

[0049] On the other hand, the utility model also provides a kind of stereoscopic forming equipment, including any one of the foregoing extrusion mechanism, and base, printing platform and portal frame mechanism. Base and printing platform drive connection, portal frame mechanism is erected on base. Extrusion mechanism can be separate extruder, can be separately arranged, or be connected on portal frame mechanism, and portal frame mechanism also connects print head;Or, extrusion mechanism is integrated in print head, and portal frame mechanism is connected with the print head integrated with extrusion mechanism.

[0050] The stereoscopic forming equipment includes any one of the foregoing extrusion mechanism, which has the advantages of any one of the foregoing extrusion mechanism, which will not be repeated here.

[0051] The utility model discloses still provide the following implementation mode:

[0052] Extrusion mechanism main part 100, driving wheel, driving wheel is connected with extrusion mechanism main part 100;

[0053] Driven wheel assembly, driven wheel assembly is used for cooperating with driving wheel to extrude and convey consumable material;

[0054] Elastic member 300 and adjusting assembly 400, two ends of elastic member 300 are connected with driven wheel assembly and adjusting assembly 400 respectively, and adjusting assembly 400 is used to move under the action of external force to adjust the strength of driven wheel assembly extruding consumable material through elastic member 300.

[0055] Extrusion mechanism main part 100 includes inner chamber 101 and adjusting hole 102, and adjusting hole 102 communicates with inner chamber 101;Elastic member 300 is located in inner chamber 101, and at least part of structure of adjusting assembly 400 is located in adjusting hole 102 or opposite adjusting hole 102 to exert external force on adjusting assembly 400 through adjusting hole 102.

[0056] Adjusting assembly 400 includes bolt piece;Adjusting hole 102 is threaded hole, and bolt piece is threaded and connected in adjusting hole 102;Elastic member 300 is connected with bolt piece.

[0057] Adjusting assembly 400 includes first nut 410 and first threaded part 420;

[0058] First nut 410 is located in inner chamber 101, and first nut 410 is fixedly connected with extrusion mechanism main part 100, and first threaded part 420 is movably connected in adjusting hole 102 and is threaded and connected in first nut 410;Elastic member 300 is connected with first threaded part 420.

[0059] The inner diameter of first nut 410 and the inner diameter of adjusting hole 102 are all greater than the maximum outer diameter of elastic member 300.Elastic member 300 is abutted, sleeved or inserted with first threaded part 420.

[0060] Extrusion mechanism main part 100 includes first slot 103, and first nut 410 is embedded in first slot 103 and is limited by first slot 103.

[0061] Adjusting assembly 400 includes second nut 430 and second threaded part 440;

[0062] Second nut 430 is located in inner chamber 101, and second nut 430 is slidably connected with extrusion mechanism main part 100 in the axial direction of second nut 430 and is limited in the circumferential direction of second nut 430, and second threaded part 440 is movably connected in adjusting hole 102 and is threaded and connected in second nut 430, and second threaded part 440 is limited with extrusion mechanism main part 100 in the axial direction of second threaded part 440.

[0063] The elastic member 300 is connected with the second nut 430.

[0064] The extrusion mechanism further comprises a stopper 500, and a limiting groove 441 is arranged on the second threaded member 440, and the stopper 500 is embedded into the limiting groove 441 to limit the axial movement of the second threaded member 440.

[0065] A second insertion slot 104 is arranged on the extrusion mechanism body 100, and a gap 501 is arranged on the stopper 500, the stopper 500 is inserted into the second insertion slot 104, and the stopper 500 is embedded into the limiting groove 441 through the gap 501.

[0066] The extrusion mechanism body 100 is further provided with a sliding hole, the inner wall of the sliding hole is matched with the outer wall of the second nut 430 in shape, the second nut 430 is embedded into the sliding hole, the sliding hole limits the second nut 430 in the circumferential direction, and the second nut 430 can move axially along the sliding hole; and the end of the elastic member 300 is embedded into the sliding hole to be connected with the second nut 430.

[0067] The adjusting assembly 400 comprises a third nut 450 and a third threaded member 460, the third threaded member 460 is located in the inner cavity 101 and connected with the extrusion mechanism body 100, the third nut 450 is movably threaded into the adjusting hole 102 and is screwed onto the third threaded member 460, and the elastic member 300 is connected with the third nut 450.

[0068] The extrusion mechanism body 100 is provided with a third insertion slot 105, and the screw cap of the third threaded member 460 is embedded into the third insertion slot 105 and is limited by the third insertion slot 105.

[0069] The elastic member 300 comprises a spring, and the spring is sleeved on the adjusting assembly 400.

[0070] The driven wheel assembly comprises a driven wheel and an adjusting handle 200, the driven wheel is connected with the adjusting handle 200, the driven wheel is used for cooperating with the driving wheel to extrude and convey the consumables, and the elastic member 300 is connected with the adjusting handle 200.

[0071] The adjusting handle 200 is rotationally connected with the extrusion mechanism body 100.

[0072] The driven wheel assembly comprises a driven wheel and an adjusting handle 200, the driven wheel is connected with the adjusting handle 200, the driven wheel is used for cooperating with the driving wheel to extrude and convey the consumables, and the elastic member 300 is connected with the adjusting handle 200.

[0073] The adjusting handle 200 is slidingly connected with the extrusion mechanism body 100.

[0074] The utility model further provides a kind of solid forming equipment, including the extrusion mechanism of above-mentioned embodiment.

[0075] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An extrusion mechanism, characterized in that: include: Extrusion mechanism body; A driving wheel connected to the extrusion mechanism body; A driven wheel assembly, the driven wheel assembly being used to cooperate with the driving wheel to squeeze and convey the consumables; An elastic member and an adjustment assembly, wherein both ends of the elastic member are respectively connected to the driven wheel assembly and the adjustment assembly, and the adjustment assembly is used to move under the action of an external force to adjust the force of the driven wheel assembly to squeeze the consumable material through the elastic member.

2. The extrusion mechanism according to claim 1, characterized in that: The extrusion mechanism body includes an inner cavity and an adjustment hole, and the adjustment hole is communicated with the inner cavity; The elastic member is located in the inner cavity, and at least a portion of the structure of the adjustment component is located in the adjustment hole or opposite to the adjustment hole, so as to apply external force to the adjustment component through the adjustment hole.

3. The extrusion mechanism according to claim 2, characterized in that: The adjustment assembly includes a bolt member; The adjusting hole is a threaded hole, and the bolt is threadedly connected to the adjusting hole; The elastic member is connected to the bolt member.

4. The extrusion mechanism according to claim 2, characterized in that: The adjustment assembly includes a first nut and a first threaded member; The first nut is located in the inner cavity, the first nut is fixedly connected to the extrusion mechanism body, and the first threaded member is movably connected to the adjustment hole and is threadedly connected to the first nut; The elastic member is connected to the first threaded member.

5. The extrusion mechanism according to claim 4, characterized in that: The inner diameter of the first nut and the inner diameter of the adjustment hole are both larger than the maximum outer diameter of the elastic member; The extrusion mechanism body includes a first slot, the first nut is embedded in the first slot and is limited by the first slot; The elastic member is in abutment with, sleeved with, or plugged into the first threaded member.

6. The extrusion mechanism according to claim 2, characterized in that: The adjustment assembly includes a second nut and a second threaded member; The second nut is located in the inner cavity, the second nut is slidably connected to the extrusion mechanism body in the axial direction of the second nut, and is limited in the circumferential direction of the second nut. The second threaded member is movably connected to the adjustment hole and threadedly connected to the second nut. The second threaded member and the extrusion mechanism body are limited in the axial direction of the second threaded member. The elastic member is connected to the second nut.

7. The extrusion mechanism according to claim 6, characterized in that: The extrusion mechanism further comprises: Blocking parts; The second threaded member is provided with a limiting groove, and the stopper is embedded in the limiting groove to limit the axial movement of the second threaded member; A second slot is provided on the extrusion mechanism body, a notch is provided on the stopper, the stopper is inserted into the second slot, and the stopper is embedded in the limiting groove through the notch; The extrusion mechanism body is further provided with a sliding hole, the inner wall shape of the sliding hole being adapted to the outer wall shape of the second nut, the second nut being inserted into the sliding hole, the sliding hole limiting the circumferential position of the second nut, and the second nut being able to move axially along the sliding hole; The end portion of the elastic member is embedded in the sliding hole to be connected with the second nut.

8. The extrusion mechanism according to claim 2, characterized in that: The adjustment assembly includes a third nut and a third threaded member; The third threaded member is located in the inner cavity and is connected to the extrusion mechanism body. The third nut is movably connected to the adjustment hole and is threadedly sleeved on the third threaded member. The elastic member is connected to the third nut.

9. The extrusion mechanism according to claim 8, characterized in that: The third threaded member is movably connected to the driven wheel assembly; A third slot is provided on the extrusion mechanism body, and the nut of the third threaded member is inserted into the third slot and is limited by the third slot; The elastic member includes a spring, and the spring is sleeved on the adjustment component.

10. A three-dimensional forming device, characterized in that: The invention comprises the extrusion mechanism according to any one of claims 1 to 9.

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