CN216658936U

CN216658936U - From type mechanism and photocuring 3D printer

Info

Publication number: CN216658936U
Application number: CN202122615739.1U
Authority: CN
Inventors: 陈春; 陈晓婵; 陈勋
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-06-03
Anticipated expiration: 2031-10-28

Abstract

The utility model relates to a release mechanism and a photocuring 3D printer comprising the same. Before each layer of model and release type membrane were from the type, the driving piece drove the driving medium rebound, because the relative output pole of one end of silo body is fixed, and the other end is connected with the driving medium, when consequently the driving medium rebound, can drive the ascending lifting of the corresponding end of silo body for the silo body takes place to incline, and the silo body bottom is separated from the border department of type membrane and LCD screen at the face of bonding earlier. Along with the increase of lifting height, increase from the clearance between type membrane and the LCD screen, and then eliminate the adsorption affinity between type membrane and the LCD screen for from type membrane and LCD screen thorough separation, the vacuum environment of the two is destroyed, when printing the model in follow-up separation and from the type membrane, just also need not overcome from the huge adsorption affinity between type membrane and the LCD screen, reduces the model damage and the risk that drops from the type membrane.

Description

From type mechanism and photocuring 3D printer

Technical Field

The utility model relates to the field of additive manufacturing 3D printing, in particular to a release mechanism and a photocuring 3D printer.

Background

Existing photocuring 3D printers can cure a photocuring material into a 3D solid model via the application of illumination. Wherein, the trough body is used for loading the photocuring material in a fluid state, and a release film is laid at the bottom. The surface of the release film is smooth, and the degree of adhesion of the cured photocuring material (namely, the layer cutting entity model) to the material tank body can be reduced so as to avoid printing failure. The lower surface of the release film needs to be tightly attached to the upper surface of the liquid crystal display, the surface of the liquid crystal display is also a smooth surface, and the release film is very easy to be adsorbed together with the liquid crystal display in the printing process of each layer to form vacuum negative pressure. When the machine prints each layer of lifting release type, the printed model and the release film can be smoothly separated after the huge adsorption force between the release film and the liquid crystal display is overcome, and the release process is completed. In the process of overcoming the adsorption force between the release film and the liquid crystal display, the release film can be peeled from the bottom of the material tank body or the layer-cutting entity model can be damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a release mechanism for solving the above problem in the existing photo-curing 3D printer, which has a poor release effect.

A release mechanism comprises a driving piece, a driving piece and a material groove body;

the driving piece is provided with an output rod, the output rod is in threaded connection with the transmission piece, and the driving piece is used for driving the transmission piece to move along the axial direction of the output rod;

one end of the material groove body is opposite to the output rod and is fixed, the other end of the material groove body is connected with the transmission piece, the transmission piece moves to drive the corresponding end of the material groove body to move synchronously, and the material groove body is provided with a release film.

In one embodiment, the release mechanism further comprises a locking assembly, and the other end of the trough body is connected with the transmission member through the locking assembly.

In one embodiment, the locking assembly comprises a first connecting piece and a clamping block, wherein the first connecting piece penetrates through the clamping block and is connected to the trough body;

the clamping block is provided with a first clamping part along the width direction of the clamping block, the transmission piece is provided with a second clamping part along the radial direction of the transmission piece, and the second clamping part is arranged around the circumferential direction of the transmission piece; first joint portion with one of second joint portion includes the bellying, and another includes the recess, the clamp splice with the driving medium passes through the bellying with the connection can be dismantled to the recess.

In one embodiment, the clamping block can move along the axial direction of the first connecting piece, so that the protruding part is clamped in the groove or separated from the groove; when the protruding part is separated from the groove, the clamping block releases the limitation on the transmission piece, and the transmission piece can rotate around the axis of the transmission piece so as to be separated from the trough body.

In one embodiment, the locking assembly further comprises an elastic member connected with the clamping block; the elastic piece is used for driving the clamping block to move close to the material tank body.

In one embodiment, the clamping block is configured with a stepped hole for the first connecting piece to pass through, and the stepped hole comprises a large hole section and a small hole section communicated with the large hole section; the elastic piece is sleeved on the first connecting piece, one end of the elastic piece is connected to the head of the first connecting piece, and the other end of the elastic piece is connected to one end, close to the small hole section, of the large hole section.

In one embodiment, the projection is configured with a guide portion of decreasing thickness in a direction from the projection toward the recess for guiding the projection into the recess.

In one embodiment, a handle is connected to one side, away from the chute body, of the clamping block, and the clamping block is pulled by the handle to move along the axial direction of the first connecting piece.

In one embodiment, a cylindrical protrusion extends outwards from the end part of the chute body close to the locking assembly, a through hole is formed in the cylindrical protrusion along the axial direction of the cylindrical protrusion, at least part of the transmission member is connected to the hole wall of the through hole, and the output rod penetrates through the through hole and is connected with the transmission member.

The utility model provides a photocuring 3D printer, includes elevating system, shaping platform and as above from type mechanism, the shaping platform set up in the top of feed trough body, the shaping platform with elevating system connects, elevating system is used for the drive the shaping platform is relative the feed trough body is done and is close to the motion and keeps away from the motion.

The technical scheme has the following beneficial effects: above-mentioned from type mechanism, because the output rod threaded connection of driving piece and driving piece, when consequently driving piece drive output rod rotated, the driving piece can remove along the axis of output rod. Before each layer of model and leaving the type of type membrane, drive the driving medium rebound through the driving piece, because the relative output lever of one end of material cell body is fixed, the other end and the driving medium of material cell body are connected, when consequently driving medium rebound, can drive one end uplift one section height that material cell body and driving medium are connected for the slope takes place for the relative driving piece of silo body, and the separation is taken first in the border department of bonding face from type membrane and LCD screen of silo body bottom. Along with the increase of lifting height, increase from the clearance between type membrane and the LCD screen, and then eliminate the adsorption affinity between type membrane and the LCD screen for from type membrane and LCD screen thorough separation, the vacuum environment of the two is destroyed, when printing the model in follow-up separation and from the type membrane, just also need not overcome from the huge adsorption affinity between type membrane and the LCD screen, reduces the model damage and the risk that drops from the type membrane.

Drawings

Fig. 1 is a schematic structural diagram of a photocuring 3D printer according to an embodiment of the present invention;

fig. 2 is an exploded view of a release mechanism according to an embodiment of the present invention;

FIG. 3 is a top view of the release mechanism shown in FIG. 2;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

FIG. 6 is a schematic view of the single side movement of the trough body shown in FIG. 3;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is a schematic view of the clamp block of FIG. 2 flipped 180 degrees;

fig. 9 is a cross-sectional view of the clamp block shown in fig. 8.

Reference numbers: 10-photocuring 3D printer; 100-a release mechanism; 110-a drive member; 111-output rod; 120-a transmission member; 121-grooves; 122-a rotating part; 130-a locking assembly; 131-a first connector; 132-a clamping block; 1321-boss; 1322-a handle; 1323-avoidance slot; 1324-a guide; 1325-large pore section; 1326-small pore section; 133-an elastic member; 140-trough body; 141-columnar protrusions; 1411-a via; 150-a connecting plate; 160-a release film; 170-liquid crystal screen; 180-a second connector; 200-a lifting mechanism; 300-forming platform.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

As shown in fig. 1 and fig. 2, a release mechanism 100 according to an embodiment of the present invention includes a driving member 110, a transmission member 120, and a trough body 140; the driving element 110 is provided with an output rod 111, the output rod 111 is in threaded connection with the transmission element 120, and the driving element 110 is used for driving the transmission element 120 to move along the axial direction of the output rod 111; the relative output rod 111 of silo body 140's one end is fixed, and silo body 140's the other end is connected with driving medium 120, and driving medium 120 removes the corresponding end synchronous motion that can drive silo body 140, and silo body 140 installs release film 160.

In the release mechanism 100, the transmission member 120 is screwed to the output rod 111 of the driving member 110, so that when the driving member 110 drives the output rod 111 to rotate, the transmission member 120 can move along the axis of the output rod 111. Before each layer of model and release film 160 from the type, drive driving medium 120 rebound through driving piece 110, because the one end of silo body 140 can be dismantled through second connecting piece 180 and connect on connecting plate 150, the relative output pole 111 of one end of silo body 140 is fixed promptly, silo body 140's the other end is connected with driving medium 120, consequently, when driving medium 120 shifts up, can drive one end that silo body 140 and driving medium 120 are connected and rise one section height upwards, make silo body incline to driving piece 110 relatively, silo body bottom takes precedence from the border department of release film 160 and LCD screen 170 at the face of bonding and separates. With the increase of the lifting height, the gap between the release film 160 and the liquid crystal panel 170 is increased, and then the adsorption force between the release film 160 and the liquid crystal panel 170 is eliminated, so that the release film 160 and the liquid crystal panel 170 are thoroughly separated. After the material separating is completed, the driving piece 110 drives the output rod 111 to rotate reversely, so that the material groove body descends and resets, and the material groove body recovers a parallel and level state. Although the release film 160 still contacts the liquid crystal display 170 after resetting, the vacuum environment of the release film 160 is damaged, the adsorption force is very small, and when the subsequent separation printing model and the release film are printed, the huge adsorption force between the release film and the liquid crystal display does not need to be overcome, so that the subsequent separation printing model and the operation of the release film are not influenced, the separation effect of the printing model and the release film is ensured, and the risk of model damage and release film falling is reduced. The driving member 110 may be a motor, the output rod 111 may be a screw rod, the transmission member 120 may be a nut, the second connecting member 180 may be a screw, the release film 160 may be teflon or transparent silica gel, and the liquid crystal screen 170 may be an LED screen or an LCD screen.

Referring to fig. 2, in one embodiment, the release mechanism further includes a locking assembly 130, and the other end of the trough body 140, i.e. the left end in fig. 2, is connected to the transmission member 120 through the locking assembly 130, so that when the driving member 110 drives the transmission member 120 to move upward, the transmission member 120 drives the trough body 140 to move together under the action of the locking assembly 130, thereby achieving the unilateral lifting of the trough body 140. In other embodiments, the locking component may not be provided, and the transmission member abuts against the lower side of the material chute body, so that when the driving member drives the transmission member to move upward, the transmission member pushes the material chute body to move upward together, thereby realizing the unilateral lifting of the material chute body.

As shown in fig. 2, in one embodiment, the locking assembly 130 comprises a first connecting member 131 and a clamp block 132, the first connecting member 131 has a head portion and a rod portion, and the rod portion of the first connecting member 131 passes through the clamp block 132 and is connected to the chute body 140; the clamping block 132 is provided with a convex part 1321, the transmission piece 120 is inwards recessed with a groove 121 along the radial direction of the transmission piece, and the groove 121 is arranged around the circumferential direction of the transmission piece 120; the clamping block 132 and the transmission member 120 are detachably connected with the groove 121 through the protrusion 1321. When the protruding portion 1321 of the clamping block 132 is clamped in the position of the groove 121 of the transmission member 120, the transmission member 120 and the clamping block 132 are connected into a whole, because the clamping block 132 is connected with the trough body 140 through the first connecting member 131, the transmission member 120 and the trough body 140 are connected into a whole, through the matching of the groove 121 and the protruding portion 1321, the transmission member 120 is enabled to have enough clamping force to drive the movement of the trough body 140, and the driving member 110 is enabled to drive the single-side movement of the trough body 140. In another embodiment, the clamping block may be recessed inwards along the width direction of the clamping block, the transmission member radially extends outwards along the transmission member to form a protrusion, the protrusion is arranged around the circumference of the transmission member, and the clamping block and the transmission member are detachably connected through the protrusion and the recess. It can be understood that, instead of providing the protrusions and the grooves, the chute body 140 and the transmission member 120 may be fastened together only by fasteners such as bolts, and then the chute body 140 is driven by the transmission member 120 to move.

In one embodiment, the clamp block 132 is movable in the axial direction of the first connector 131. When the clamping block 132 moves close to the material trough body 140 until the protrusion 1321 of the clamping block 132 is clamped with the groove 121 of the transmission member 120, the transmission member 120 and the material trough body 140 are connected into a whole, so that the release film 160 at the bottom of the material trough body 140 is separated from the liquid crystal screen 170 through the driving member 110. When the clamping block 132 moves away from the chute body 140 until the protrusion 1321 is separated from the groove 121 of the transmission member 120, the clamping block 132 releases the limitation on the transmission member 120, and the transmission member 120 moves and does not drive the chute body 140 to move, so that the chute body can be detached. Specifically, the transmission member 120 is rotated to be unscrewed from the output rod 111 and separated from the chute body 140, and the chute body 140 can be taken down from the output rod 111, so that the chute body 140 is conveniently detached to be maintained and replaced. The transmission member 120 may be configured with a rotating portion 122 protruding outward in a radial direction, and the rotating portion 122 is held by a hand to facilitate rotation of the transmission member 120.

Fig. 8 is a schematic view of the clamp block shown in fig. 2 flipped one hundred eighty degrees, i.e., fig. 2 is a top view and fig. 8 is a bottom view. In an alternative embodiment, as shown in fig. 5 and 8, a handle 1322 is connected to a side of the clamp block 132 away from the chute body 140, so that a human hand or a tool can act on the handle 1322 to pull the clamp block 132 to move along the axial direction of the first connecting member 131. The handle 1322 may be formed with a through hole to facilitate pulling of the clamp block 132 by a finger therethrough.

As shown in fig. 2, in a specific embodiment, the locking assembly 130 further includes an elastic member 133, the elastic member 133 being connected to the clamping block 132; the elastic member 133 is used for driving the clamping block 132 to move close to the chute body 140. When the material trough body 140 needs to be detached and maintained, the clamping block 132 is manually driven to move to the direction departing from the material trough body 140 to the protruding portion to be separated from the groove by overcoming the elastic force, so that the transmission member 120 is separated from the limitation of the clamping block 132, the transmission member 120 can be screwed out from the output rod 111 at the moment, and the material trough body 140 can be detached. And release allows the clamp block 132 to return to its original position under the force of the elastic member 133, thereby clamping the chute body to fix it. The elastic member 133 may be embodied as a spring. In other embodiments, also can not set up the elastic component and make clamp splice automatic re-setting, when the bellying breaks away from the recess, the axial displacement of manual promotion clamp splice along first connecting piece for clamp splice and driving medium joint, and through fasteners such as screw with clamp splice and driving medium locking, guarantee the joint effect of the two.

As shown in fig. 9, in one embodiment, the clamping block 132 is configured with a stepped bore through which the first connector 131 passes, the stepped bore including a large bore section 1325 and a small bore section 1326 in communication with the large bore section 1325; the elastic member 133 is sleeved on the first connecting member 131, and one end of the elastic member 133 is connected to the head of the first connecting member 131, and the other end is connected to one end of the large hole section 1325 close to the small hole section 1326. The elastic member 133 is limited by the small hole 1326, so that the elastic member 133 is ensured to be limited between the large hole 1325 and the head of the first connecting member 131. Because the first connecting piece 131 passes through the clamping block 132 and is connected to the chute body 140, the position of the first connecting piece 131 is fixed, when an external force acts on the clamping block 132 to make the clamping block 132 move along the axial direction of the first connecting piece 131, the large hole section 1325 moves synchronously, so that the elastic piece 133 is compressed, and when the external force disappears, the clamping block 132 can automatically reset to be clamped with the transmission piece 120 under the action of the elastic piece 133. The first connector 131 may be a stepped screw. In other embodiments, the elastic member is connected between the clamp block and the trough body such that the elastic member is stretched when the clamp block is moved away from the trough body.

As shown in fig. 5 and 8, in one embodiment, the boss 1321 is configured with a guide 1324 having a gradually decreasing thickness from the boss 1321 toward the recess 121, i.e., in a vertical direction in the view of fig. 5. From the direction of bellying 1321 towards recess 121, because the thickness of guide 1324 reduces gradually, be convenient for guide bellying 1321 stretches into in recess 121 in order to contact with recess 121, through reducing the area of contact between the two to reduce the frictional force between the two, reduce the moving resistance of clamp splice 132, be convenient for clamp splice 132 joint in recess 121 or break away from in the recess 121.

In a further embodiment, as shown in fig. 2 and 5, the end of the trough body 140 close to the locking assembly is provided with a cylindrical protrusion 141 extending outwards, the cylindrical protrusion 141 is provided with a through hole 1411 along the axial direction, at least a part of the transmission member 120 is connected to the wall of the through hole 1411, and the output rod 111 passes through the through hole 1411 and is connected with the transmission member 120. Through hiding output rod 111 in columnar protrusion 141, on the one hand, can reduce operating personnel and the risk that pivoted output rod 111 direct contact leads to the fish tail, on the other hand, can play dirt-proof effect. In addition, at least part of the transmission member 120 is connected to the wall of the through hole 1411, so that when the transmission member 120 is screwed out of the output rod 111 or screwed into the output rod 111, the through hole 1411 can play a role in guiding, and the convenience of installation and disassembly is improved.

In one particular embodiment, as shown in fig. 5 and 8, the clamp block 132 has an escape slot 1323 recessed inward along its width. In the view shown in fig. 5, that is, the escape slot 1323 is located below the protrusion 1321, a partial area of the bottom end of the transmission member 120 extends into the through hole 141, an area of the transmission member 120 where the groove 121 is located does not extend into the through hole 1411, and the protrusion 1321 is engaged with the groove 121. The avoiding groove 1323 is arranged to avoid the columnar protrusion 141, so that the clamping block 132 is prevented from interfering with the columnar protrusion 141, and the axial movement of the clamping block 132 along the first connecting piece 131 is prevented from being influenced. The inner wall of the avoiding groove 1323 may be arc-shaped or straight, as long as a certain gap is ensured between the clamping block 132 and the columnar protrusion 141.

Further, the utility model also provides a photocuring 3D printer 10, which includes a molding platform 300, a lifting mechanism 200 and the release mechanism 100, wherein the molding platform 300 is arranged above the release mechanism 100, the molding platform 300 is detachably connected with the lifting mechanism 200, and the lifting mechanism 200 is used for driving the molding platform 300 and the printing model to move in the vertical direction. The lifting mechanism 200 may be a screw assembly or the like.

Drive at elevating system 200 and print the model with leave type membrane 160 from the type before, drive driving medium 120 rebound through driving piece 110, because the relative output rod 111 of one end of silo body 140 is fixed, the other end of silo body 140 passes through locking Assembly 130 and is connected with driving medium 120, therefore when driving medium 120 upwards moved, can drive one end that silo body and driving medium 120 are connected and upwards lift one section height, make the silo body take place to incline relative to driving piece 110, the silo body bottom is from type membrane 160 and LCD screen 170 the border department of face of bonding and separating earlier. Along with the increase of the lifting height, the gap between the release film 160 and the liquid crystal screen 170 is increased, so that the adsorption force between the release film 160 and the liquid crystal screen 170 is eliminated, the release film 160 and the liquid crystal screen 170 are thoroughly separated, and the release film 160 is reset after the release is finished. Although the release film 160 still contacts the liquid crystal display 170 after resetting, the vacuum environment of the release film 160 is damaged, the adsorption force is very small, and when the subsequent separation printing model and the release film are printed, the huge adsorption force between the release film and the liquid crystal display does not need to be overcome, so that the subsequent separation printing model and the operation of the release film are not influenced, the separation effect of the printing model and the release film is ensured, and the risk of model damage is reduced.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A release mechanism is characterized by comprising a driving piece, a driving piece and a material groove body;

one end of the material groove body is opposite to the output rod and is fixed, the other end of the material groove body is connected with the transmission part, the transmission part moves to drive the corresponding end of the material groove body to move synchronously, and the material groove body is provided with a release film.

2. The release mechanism according to claim 1, further comprising a locking assembly, wherein the other end of the trough body is connected with the transmission member through the locking assembly.

3. The release mechanism according to claim 2, wherein the locking assembly comprises a first connecting piece and a clamping block, and the first connecting piece penetrates through the clamping block and is connected to the trough body;

the clamping block is provided with a first clamping portion along the width direction of the clamping block, the transmission piece is provided with a second clamping portion along the radial direction of the transmission piece, and the second clamping portion is arranged around the circumferential direction of the transmission piece; first joint portion with one of second joint portion includes the bellying, and another includes the recess, the clamp splice with the driving medium passes through the bellying with the connection can be dismantled to the recess.

4. The release mechanism according to claim 3, wherein the clamp block can move along the axial direction of the first connecting piece, so that the protrusion is clamped in the groove or separated from the groove; when the protruding part is separated from the groove, the clamping block releases the limitation on the transmission piece, and the transmission piece can rotate around the axis of the transmission piece so as to be separated from the trough body.

5. The release mechanism of claim 4, wherein the locking assembly further comprises an elastic member connected to the clamp block; the elastic piece is used for driving the clamping block to move close to the material tank body.

6. The release mechanism of claim 5, wherein the clamping block is configured with a stepped hole for the first connector to pass through, and the stepped hole comprises a large hole section and a small hole section communicated with the large hole section; the elastic piece is sleeved on the first connecting piece, one end of the elastic piece is connected to the head of the first connecting piece, and the other end of the elastic piece is connected to one end, close to the small hole section, of the large hole section.

7. The release mechanism of claim 3, wherein the protrusion is configured with a guide portion having a gradually decreasing thickness from the protrusion toward the groove for guiding the protrusion into the groove.

8. The release mechanism according to claim 3, wherein a handle is connected to one side of the clamp block away from the chute body, and the clamp block is pulled by the handle to move along the axial direction of the first connecting piece.

9. The release mechanism according to claim 3, wherein a cylindrical protrusion extends outwards from an end of the chute body close to the locking assembly, a through hole is formed in the cylindrical protrusion along the axial direction of the cylindrical protrusion, at least part of the transmission member is connected to a hole wall of the through hole, and the output rod penetrates through the through hole and is connected with the transmission member.

10. The utility model provides a photocuring 3D printer, its characterized in that includes elevating system, shaping platform and as claimed in any one of claims 1-9 from type mechanism, the shaping platform set up in the top of feed trough body, the shaping platform with elevating system connects, elevating system is used for the drive the shaping platform is relative the feed trough body is done and is close to the motion and keep away from the motion.