Pre-pressing device

Abstract

The utility model provides a prepressing device which comprises a prepressing module and a stopping module which are arranged at a prepressing station, the prepressing module comprises a movably-arranged pressing piece, and when the pressing piece is located at a pressing position, the pressing piece abuts against the upper side of a tooth jaw model and presses the tooth jaw model and a bottom support carrier which are preassembled in a downward movement mode; the stopping module comprises a movably-arranged stopping part, and when the stopping part is located at the stopping position, the stopping part abuts against the bottom support carrier so that the bottom support carrier conveyed on the conveying line can be stopped at the prepressing station. When a conveying line conveys a bottom support carrier to a pre-pressing station, automatic pre-pressing assembly can be achieved through the pre-pressing module, and therefore the labor intensity of workers is reduced; and the stopping module can abut against the bottom support carrier through the stopping part so as to stop the bottom support carrier at the pre-pressing station, so that movement of the pre-pressing module does not affect movement of the conveying line and does not interfere with work of other stations on the conveying line, automatic operation is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of tooth correction, and particularly relates to a pre-pressing device. Background Art

[0002] A shell-shaped tooth correction appliance is a medical device for invisible correction of teeth. Due to its comfortable wearing, removable, and aesthetic features, it is chosen by more and more people. In the preparation process of the shell-shaped tooth correction appliance, the film pressing process is particularly important. A film pressing device is used in the film pressing process, and the core part of the film pressing device is a jig composed of a dental model and a base carrier. The dental model is fixed on the base carrier. To ensure the stability of the dental model during the film pressing process, a concave-convex positioning and matching structure is provided between the dental model and the base carrier. In addition, during the assembly line manufacturing process of the shell-shaped tooth correction appliance using the film pressing process, the dental model is transported by the base carrier to multiple workstations, and the stable placement of the dental model and the base carrier also needs to be maintained during transportation. If the positioning and matching structure is modified to make the cooperation between the dental model and the base carrier looser, the dental model will be more likely to shake. Therefore, the positioning and matching structure needs to be closely matched. Therefore, the existing assembly method of the dental model and the base carrier is manual pre-pressing assembly to form a positioning and matching structure between the concave-convex positioning and matching structures of the dental model and the base carrier. This assembly method not only requires manual operation, is time-consuming and laborious, has low production efficiency, but also has high processing costs. Summary of the Utility Model

[0003] The purpose of the embodiment of the utility model is to provide a pre-pressing device, aiming to solve the problems that the existing assembly method of the dental model and the base carrier not only requires manual operation, is time-consuming and laborious, has low production efficiency, but also has high processing costs.

[0004] To solve the above technical problems, the embodiment of the utility model provides a pre-pressing device for pressing a pre-assembled dental model and a base carrier. The base carrier is transported by a conveyor line. The pre-pressing device includes:

[0005] A pre-pressing module is arranged at the pre-pressing station of the conveyor line. The pre-pressing module includes a movably arranged pressing member. When the pressing member is in the pressing position, the pressing member abuts against the upper side of the dental model and presses the pre-assembled dental model and the base carrier in a downward movement manner.

[0006] A stopping module is arranged at the pre-pressing station. The stopping module includes a movably arranged blocking portion. When the blocking portion is in the blocking position, the blocking portion abuts against the base carrier to stop the base carrier being transported on the conveyor line at the pre-pressing station.

[0007] The utility model newly designs an automatic pre-pressing device, and a pre-pressing station is correspondingly arranged on the conveyor line. When the bottom tray carrier is transported to the pre-pressing station on the conveyor line, the automatic pre-pressing assembly between the dental model and the bottom tray carrier can be realized through the pre-pressing module, thereby reducing the labor intensity of personnel. And the stopping module can abut against the bottom tray carrier through the blocking part to stop the bottom tray carrier being transported on the conveyor line at the pre-pressing station. In this way, the movement of the pre-pressing module will not affect the movement of the conveyor line and will not interfere with the work of other stations on the conveyor line, so as to realize the full-line automatic operation during the manufacture of the shell-shaped orthodontic appliance, improve the production efficiency, and can greatly reduce the labor cost.

[0008] Preferably, the blocking part includes a first blocking member which is arranged to be capable of moving up and down; and / or, the blocking part includes a second blocking member which is arranged to be capable of moving horizontally. The blocking part is set as a blocking member capable of linearly moving along the vertical or horizontal direction. The movement mode of such a blocking member is relatively simple, the driving mechanism for driving the blocking member is also relatively simple, and other components on the conveyor line are not likely to interfere with the movement of the blocking member.

[0009] Preferably, the first blocking member at least includes one of the following: a resisting and blocking structure which, when the first blocking member is in the blocking position, resists against the forward side of the bottom tray carrier; a lifting structure which, when the first blocking member is in the blocking position, resists against the lower side of the bottom tray carrier to lift the bottom tray carrier upward away from the conveyor line; an inserting structure which, when the first blocking member is in the blocking position, inserts into a groove on the bottom tray carrier to limit the bottom tray carrier in the horizontal direction. In some embodiments, the stopping module can resist against the forward side of the bottom tray carrier through the resisting and blocking structure to limit the bottom tray carrier in the transportation direction of the conveyor line, so as to stop the bottom tray carrier at the pre-pressing station. In some embodiments, the stopping module can lift the bottom tray carrier upward through the lifting structure, so that the bottom tray carrier is lifted upward away from the conveyor line, so as to stop the bottom tray carrier at the pre-pressing station. In some embodiments, the stopping module can insert into the groove on the bottom tray carrier through the inserting structure to limit the bottom tray carrier in the horizontal direction, so as to stop the bottom tray carrier at the pre-pressing station. And the specific structures in various stopping modules can also be used in combination, increasing the flexibility of the stopping module setting scheme and facilitating adaptation to different application scenarios.

[0010] Preferably, the abutting and blocking structure includes a first lifting platform and an abutting member, and the abutting member is disposed on the upper surface of the first lifting platform; when the first blocking member is in the blocking position, the first lifting platform is located below the bottom carrier, and the abutting member at least partially abuts against the forward side of the bottom carrier; the stopping module further includes a first lifting driving mechanism, and the first lifting driving mechanism is disposed below the bottom carrier, and the first lifting driving mechanism can drive the first lifting platform to lift to change the distance between the first lifting platform and the bottom carrier. The abutting and blocking structure is set as the first lifting platform and the abutting member. This setting method of the abutting and blocking structure is relatively simple. The abutting and blocking structure is connected to the first lifting driving mechanism through the first lifting platform, so it is convenient to connect the abutting and blocking structure with the first lifting driving mechanism, which is beneficial to driving the abutting and blocking structure by the first lifting driving mechanism; and the abutting and blocking structure abuts against the bottom carrier through the abutting member, which can reduce the contact area between the abutting and blocking structure and the bottom carrier, and is beneficial to forming an effective contact between the abutting and blocking structure and the bottom carrier in the transportation direction of the conveyor line, so that the bottom carrier can be better stopped at the pre-pressing station through the abutting and blocking structure.

[0011] Preferably, the lifting structure includes a second lifting platform; when the first blocking member is in the blocking position, the second lifting platform abuts against the lower side of the bottom carrier, and the bottom carrier is lifted upward away from the conveyor line; the stopping module further includes a second lifting driving mechanism, and the second lifting driving mechanism is disposed below the bottom carrier, and the second lifting driving mechanism can drive the second lifting platform to lift to change the distance between the second lifting platform and the bottom carrier. The lifting structure is set as the second lifting platform. This setting method of the lifting structure is relatively simple, and the bottom carrier can be lifted upward relatively smoothly through the second lifting platform, and it is not easy for the bottom carrier to fall from the second lifting platform.

[0012] Preferably, the plugging structure includes a plugging member, and the lower end of the plugging member is disposed on the upper surface of the second lifting platform; when the first blocking member is in the blocking position, the upper end of the plugging member is inserted into the groove on the bottom carrier to limit the bottom carrier in the horizontal direction. The plugging structure is set as the plugging member. This setting method of the plugging structure is relatively simple, and the plugging member is disposed on the upper surface of the second lifting platform, so as to realize driving the plugging member and the second lifting platform to lift synchronously by the second lifting driving mechanism, that is, driving the plugging member and the second lifting platform to lift by the same lifting driving mechanism at the same time, and there is no need to set a separate lifting driving mechanism for the plugging member, thus simplifying the structural design of the stopping module.

[0013] Preferably, the plugging structure includes a plugging member; when the first blocking member is in the blocking position, at least a part of the plugging member is inserted into the groove on the bottom carrier to limit the bottom carrier in the horizontal direction; the stopping module further includes a third lifting driving mechanism, the third lifting driving mechanism is arranged on the lower side of the bottom carrier, and the third lifting driving mechanism can drive the plugging member to lift to change the distance between the plugging member and the bottom carrier. Setting the plugging structure as a plugging member, this setting method of the plugging structure is relatively simple.

[0014] Preferably, the pressing member includes a pressing member body, and a convex platform is protruded on the end surface of the pressing member body close to the dental model. When the pressing member is in the pressing position, the convex platform abuts against the upper surface of the dental model. By providing a convex platform on the end surface of the pressing member body, the pressing member abuts against the dental model through the convex platform. Since the area of the convex platform is smaller than the area of the end surface of the pressing member body close to the dental model, the abutting area between the pressing member and the dental model can be reduced, so that the phenomenon of the dental model warping is not likely to occur.

[0015] Preferably, an information block is provided in the middle of the U-shaped area of the dental model, and the maximum width of the convex platform in the direction perpendicular to the movement direction is less than or equal to the maximum width of the information block; the convex platform abuts against the upper surface of the dental model, specifically: the pressing member abuts against the upper surface of the information block of the dental model. When the pressing member abuts against the dental model, the convex platform abuts against the upper surface of the information block of the dental model. Since the upper surface of the information block is flatter than other areas of the dental model, when the pressing member abuts against the upper surface of the information block through the convex platform, the phenomenon of the dental model warping is not likely to occur, and the information block is approximately located at the center position of the dental model. Pressing the center position of the dental model is beneficial to achieving the overall force balance.

[0016] Preferably, the pressing member includes an elastic abutting portion. When the pressing member is in the pressing position, the elastic abutting portion abuts against the upper surface of the dental model. By providing an elastic abutting portion on the pressing member, the pressing member abuts against the dental model through the elastic abutting portion, making the contact between the pressing member and the dental model flexible. It is beneficial to apply a constant pressure to the dental model through the pressing member to ensure stable pressure, which not only will not cause damage to the dental model but also can extend the service life of the pressing member.

[0017] Preferably, an elastic layer is provided on the side of the pressing member facing the dental model, or the elastic abutting portion includes a pressing head and an elastic body, and the elastic body is provided on the side of the pressing head away from the dental model. There are various specific implementation manners for providing the elastic abutting portion on the pressing member. It can be by providing an elastic layer on the pressing member and using the elastic layer as the elastic abutting portion; or the elastic abutting portion can be set as a pressing head and an elastic body, and through the elastic expansion and contraction of the elastic body, the flexible contact between the elastic abutting portion and the dental model can be achieved.

[0018] Preferably, the maximum width of the pressing member in the direction perpendicular to the movement direction is greater than or equal to the maximum width of the dental model; the pressing member abuts against the upper side of the dental model, specifically: the pressing member abuts against at least the posterior tooth areas on both sides of the dental model simultaneously. When the pressing member abuts against the dental model, the pressing member can press the posterior tooth areas on both sides of the dental model simultaneously, realizing the positioning and force balance of the dental model. This pressing method of the dental model is not prone to the phenomenon of the dental model tilting up.

[0019] Preferably, when the pressing member is in the pressing position, the vertical distance value between the pressing member and the bottom carrier is a preset distance value. Setting the lower limit position of the downward movement of the pressing member with the bottom carrier as the reference can avoid the problem of the pressing member moving downward too far and damaging the dental model.

[0020] Preferably, the pre-pressing module further includes a limiting structure, and when the blocking portion is in the blocking position, the limiting structure abuts against the upper side of the dental model. When the stopping module lifts the bottom carrier upward through the lifting structure, through the abutting cooperation between the limiting structure and the bottom carrier, the accurate positioning of the bottom carrier in the up and down directions can be realized, so as to accurately stop the bottom carrier at the pre-pressing station. Description of the Drawings

[0021] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a proportional limitation.

[0022] Figure 1 It is one of the structural schematic diagrams of the pre-pressing device in the embodiment of the present invention. Among them, the pressing member is in the standby position and the blocking portion is in the release position;

[0023] Figure 2 is Figure 1 the partial enlarged view of A in

[0024] Figure 3It is the second structural schematic diagram of the preloading device in the embodiment of the present utility model. Among them, the pressing member is in the standby position, and the abutting and blocking structure is in the blocking position;

[0025] Figure 4 It is the third structural schematic diagram of the preloading device in the embodiment of the present utility model. Among them, the pressing member is in the pressing position, the abutting and blocking structure is in the release position, and the lifting structure and the inserting structure are in the blocking position;

[0026] Figure 5 It is Figure 4 the partial enlarged view at B in

[0027] Figure 6 It is Figure 4 the bottom view of the preloading device in

[0028] Figure 7 It is Figure 6 the A-A sectional view of the preloading device in

[0029] Figure 8 It is Figure 6 the B-B sectional view of the preloading device in

[0030] Figure 9 It is Figure 4 the top view of the preloading device after removing the bracket in

[0031] Figure 10 It is Figure 4 the structural schematic diagram of the preloading module in

[0032] Figure 11 It is Figure 10 the structural schematic diagram at the pressing member in

[0033] Figure 12 It is the structural schematic diagram of the shell-shaped tooth aligner production system in the embodiment of the present utility model;

[0034] Figure 13 It is Figure 12 the partial enlarged view at C in

[0035] Explanation of the reference numerals of the drawings of the present utility model:

[0036] Shell-shaped dental appliance production system 1000, pre-pressing device 100, pre-pressing module 1, pressing member 11, pressing member main body 111, boss 112, elastic abutting portion 113, pressing and lifting drive mechanism 12, exhaust speed control valve 13, mounting bracket 14, mounting plate 15, bolt 16, stopping module 2, blocking portion 21, abutting and blocking structure 21a, first lifting platform 211a, abutting member 212a, lifting structure 21b, second lifting platform 211b, plugging structure 21c, plugging member 211c, first lifting drive mechanism 22, second lifting drive mechanism 23, limiting structure 3, bracket 4, dental model 200, information block 210, posterior tooth area 220, positioning hole 230, base carrier 300, first placement position 310, second placement position 320, positioning projection 330, base 340, carrier 350, groove 360, conveying line 400, pre-pressing station 410.

[0037] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0039] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0041] The present utility model provides a pre-pressing device, which can be used in a shell-shaped dental appliance production system to press a pre-assembled dental arch model and a base carrier tightly. Figures 1 to 11 Fig. shows a preferred embodiment of the pre-pressing device provided by the present utility model.

[0042] Please refer to Figure 1 , in this embodiment, the pre-pressing device 100 includes a pre-pressing module 1 and a stopping module 2. The pre-pressing module 1 is arranged at the pre-pressing station 410 of the conveying line 400. The pre-pressing module 1 includes a movably arranged pressing member 11. When the pressing member 11 is in the pressing position (please refer to Figure 4 and Figure 5 ), the pressing member 11 abuts against the upper side of the dental arch model 200 and presses the pre-assembled dental arch model 200 and the base carrier 300 in a downward movement manner; the stopping module 2 is arranged at the pre-pressing station 410. The stopping module 2 includes a movably arranged blocking portion 21. When the blocking portion 21 is in the blocking position (please refer to Figure 3 , Figure 7 and Figure 8 ), the blocking portion 21 abuts against the base carrier 300 to stop the base carrier 300 being transported on the conveying line 400 at the pre-pressing station 410.

[0043] Specifically, please refer to Figure 12 and Figure 13 , the shell-shaped dental appliance production system 1000 includes a conveying line 400. A plurality of stations are formed on the conveying line 400 along the transportation direction. A plurality of production processes of the shell-shaped dental appliance can be respectively carried out at the plurality of stations. The plurality of stations on the conveying line 400 include a pre-pressing station 410. The base carrier 300 is transported by the conveying line 400 so that the base carrier 300 can flow between the plurality of stations on the conveying line 400.

[0044] Before the base carrier 300 flows to the pre-pressing station 410, it is necessary to place the dental arch model 200 on the base carrier 300 manually or by a manipulator, etc. to realize the pre-assembly of the dental arch model 200 and the base carrier 300. At this time, the pre-assembly is relatively simple, and only the dental arch model 200 needs to be stacked on the base carrier 300. The dental arch model 200 is usually placed on the upper surface of the base carrier 300. Optionally, please refer to Figure 9 , in this embodiment, a first placement position 310 and a second placement position 320 are arranged on the upper surface of the base carrier 300. The first placement position 310 is used to carry the dental arch model 200, and the second placement position 320 is used to carry a diaphragm (not shown in the figure) matching the dental arch model 200. In this way, the matching dental arch model 200 and diaphragm can be synchronously flowed by the base carrier 300, avoiding the problem that the dental arch model 200 and the diaphragm cannot be matched.

[0045] There is a concave-convex positioning and mating structure between the dental model 200 and the base carrier 300. Optionally, please refer to Figure 9 , in this embodiment, the concave-convex positioning and mating structure includes a positioning hole 230 and a positioning protrusion 330 that are concave-convexly positioned and mated. One of the dental model 200 and the base carrier 300 is provided with the positioning hole 230, and the other is provided with the positioning protrusion 330.

[0046] It may be that the dental model 200 is provided with the positioning hole 230, and the base carrier 300 is provided with the positioning protrusion 330; or it may be that the dental model 200 is provided with the positioning protrusion 330, and the base carrier 300 is provided with the positioning hole 230. Optionally, please refer to Figure 9 , in this embodiment, the dental model 200 is provided with the positioning hole 230, and the base carrier 300 is provided with the positioning protrusion 330. Setting the positioning hole 230 on the dental model 200 can reduce the amount of resin consumed in printing the dental model 200. Hereinafter, an example in which the dental model 200 is provided with the positioning hole 230 and the base carrier 300 is provided with the positioning protrusion 330 will be introduced.

[0047] The base carrier 300 can be used to carry the dental model 200, and the base carrier 300 can also be transported by the conveying line 400. The base carrier 300 can be a single component, or it can also be an assembly composed of multiple components. Optionally, please refer to Figure 1 , in this embodiment, the base carrier 300 includes a base 340 and a carrier 350. The carrier 350 is used to be arranged on the conveying line 400 to transport the carrier 350 through the conveying line 400. And the blocking portion 21 abuts against the carrier 350 to stop the base carrier 300 being transported on the conveying line 400 at the pre-pressing station 410. The base 340 is arranged on the upper surface of the carrier 350. The base 340 is used to carry the dental model 200, and the base 340 is provided with the positioning protrusion 330. It is necessary to press-fit the pre-assembled dental model 200 and the base 340. Hereinafter, an example in which the base carrier 300 includes the base 340 and the carrier 350 will be introduced.

[0048] For the pre-assembled dental model 200 and the base carrier 300, the positioning protrusion 330 of the base carrier 300 extends into the positioning hole 230 of the dental model 200, but the bottom surface of the dental model 200 does not yet fit against the upper surface of the base carrier 300. At this time, it is necessary to press the pre-assembled dental model 200 and the base carrier 300 tightly so that the dental model 200 is completely pressed into the positioning protrusion 330, so that the bottom surface of the dental model 200 can fit against the upper surface of the base carrier 300, thereby fixing the dental model 200 on the base carrier 300.

[0049] The preloading module 1 and the stopping module 2 are both arranged at the preloading station 410 of the conveyor line 400. When the pre-assembled dental cast 200 and the base carrier 300 are transported to the preloading station 410 by the conveyor line 400, the preloading device 100 can stop the base carrier 300 being transported on the conveyor line 400 at the preloading station 410 through the stopping module 2, and then can press the pre-assembled dental cast 200 and the base carrier 300 through the preloading module 1. The preloading device 100 is arranged at the preloading station 410 of the conveyor line 400. Optionally, please refer to Figure 1 , in this embodiment, the preloading device 100 further includes a bracket 4. The bracket 4 is arranged at the preloading station 410 of the conveyor line 400. The preloading module 1 and the stopping module 2 are both arranged on the bracket 4. Integrating the preloading module 1 and the stopping module 2 on the bracket 4 enables the preloading device 100 to be arranged on the conveyor line 400 as a whole, so that it is convenient to install and debug the preloading device 100. Hereinafter, taking the preloading module 1 and the stopping module 2 both being arranged on the bracket 4 as an example for introduction.

[0050] Please refer to Figure 1 , the stopping module 2 is arranged on the bracket 4. The stopping module 2 includes a blocking portion 21 movably arranged relative to the bracket 4 and a driving mechanism for driving the blocking portion 21. Within the moving stroke of the blocking portion 21, the blocking portion 21 has a blocking position and a release position opposite to the blocking position. When the blocking portion 21 is in the blocking position (please refer to Figure 3 , Figure 7 and Figure 8 ), the blocking portion 21 abuts against the base carrier 300, so that the conveyor line 400 cannot transport the base carrier 300 forward, so as to stop the base carrier 300 being transported on the conveyor line 400 at the preloading station 410. When the blocking portion 21 is in the release position (please refer to Figure 1 ), the blocking portion 21 cannot block the base carrier 300 being transported on the conveyor line 400 at the preloading station 410, and the conveyor line 400 can continue to transport the base carrier 300 forward. In this way, even when the conveyor line 400 does not stop moving, after the base carrier 300 being transported on the conveyor line 400 is stopped at the preloading station 410 through the stopping module 2, the pre-assembled dental cast 200 and the base carrier 300 can be pressed through the preloading module 1, thus not interfering with the work of other stations on the conveyor line 400.

[0051] The utility model newly designs an automatic preloading device 100, and a preloading station 410 is correspondingly arranged on a conveyor line 400. When the conveyor line 400 transports a bottom tray carrier 300 to the preloading station 410, automatic preloading and assembly between a dental model 200 and the bottom tray carrier 300 can be realized through a preloading module 1, thereby reducing the labor intensity of workers. Moreover, a stopping module 2 can abut against the bottom tray carrier 300 through a blocking part 21 to stop the bottom tray carrier 300 being transported on the conveyor line 400 at the preloading station 410. In this way, the movement of the preloading module 1 will not affect the movement of the conveyor line 400 and will not interfere with the work of other stations on the conveyor line 400, so as to realize full-line automation operation during the manufacture of a shell-shaped orthodontic appliance, improve production efficiency, and greatly reduce labor costs.

[0052] The blocking part 21 is movably arranged, and the movement track of the blocking part 21 can be set according to the actual situation. The movement track of the blocking part 21 can be a straight line, a curve or a broken line, etc. Optionally, in this embodiment, the blocking part 21 includes a blocking member, and the blocking member is linearly movable. Specifically, the blocking part 21 is set as a linearly movable blocking member. The movement mode of such a blocking member is relatively simple, so the setting of the driving mechanism for driving the blocking member will also be relatively simple, and other components on the conveyor line 400 are not likely to interfere with the movement of the blocking member.

[0053] The linear movement direction of the blocking part 21 can be vertical or horizontal. The blocking part 21 can include one or more blocking members. When the blocking part 21 includes multiple blocking members, the movement directions of the multiple blocking members can be the same, or at least two of the blocking members have different movement directions.

[0054] Optionally, in this embodiment, the blocking part 21 includes a first blocking member, and the first blocking member is vertically movable.

[0055] Optionally, in other embodiments, the blocking part 21 includes a second blocking member, and the second blocking member is horizontally movable. In one embodiment, the movement direction of the second blocking member can be set to a direction perpendicular to the movement direction of the workpiece on the conveyor line, such as being arranged on the side of the conveyor line.

[0056] Specifically, the blocking part 21 is set as a blocking member that can linearly move along the vertical or horizontal direction. The movement mode of such a blocking member is relatively simple, so the setting of the driving mechanism for driving the blocking member will also be relatively simple, and other components on the conveyor line 400 are not likely to interfere with the movement of the blocking member. When the blocking part 21 is set as a first blocking member that can linearly move along the vertical direction, the height space of the preloading device 100 can be fully utilized, making the structure of the preloading device 100 more compact.

[0057] The stopping module 2 abuts against the bottom carrier 300 through the first blocking member to stop the bottom carrier 300 on the conveyor line 400. There are various specific setting methods for the first blocking member to abut and stop the bottom carrier 300. For example, please refer to Figure 1 and Figure 2 , the first blocking member may include a holding and blocking structure 21a, a lifting structure 21b, and a plugging structure 21c. The specific setting methods of the holding and blocking structure 21a, the lifting structure 21b, and the plugging structure 21c will be introduced in detail below.

[0058] Optionally, please refer to Figure 3 , in this embodiment, when the first blocking member is in the blocking position (since the first blocking member includes a holding and blocking structure 21a, a lifting structure 21b, and a plugging structure 21c in this embodiment, when the first blocking member is in the blocking position, the holding and blocking structure 21a, the lifting structure 21b, and the plugging structure 21c are in the blocking position, and the diagrams of the holding and blocking structure 21a, the lifting structure 21b, and the plugging structure 21c in the blocking position can be respectively referred to Figure 3 、 Figure 7 、 Figure 8 ; similarly, when the first blocking member is in the release position, the holding and blocking structure 21a, the lifting structure 21b, and the plugging structure 21c are in the release position, and the diagrams of the holding and blocking structure 21a, the lifting structure 21b, and the plugging structure 21c in the release position can all be referred to Figure 1 ), the holding and blocking structure 21a abuts against the forward side of the bottom carrier 300 ( Figure 1 and Figure 13 show the forward direction X of the bottom carrier 300).

[0059] Specifically, when the first blocking member is in the release position (please refer to Figure 1 ), the holding and blocking structure 21a is located above or below the bottom carrier 300 (shown as below in the figure); when the first blocking member is in the blocking position (please refer to Figure 3 ), the holding and blocking structure 21a abuts against the forward side of the bottom carrier 300. In this way, the stopping module 2 can abut against the forward side of the bottom carrier 300 through the holding and blocking structure 21a to limit the bottom carrier 300 in the transportation direction of the conveyor line 400, so as to stop the bottom carrier 300 at the pre-pressing station 410.

[0060] The specific shape and style of the holding and blocking structure 21a can be set according to the actual situation. Optionally, please refer to Figure 1 and Figure 2, in this embodiment, the abutting and blocking structure 21a includes a first lifting platform 211a and an abutting member 212a, and the abutting member 212a is arranged on the upper surface of the first lifting platform 211a; when the first blocking member is in the blocking position, the first lifting platform 211a is located below the bottom carrier 300, and the abutting member 212a at least partially abuts against the forward side of the bottom carrier 300; the stopping module 2 further includes a first lifting driving mechanism 22, and the first lifting driving mechanism 22 is arranged below the bottom carrier 300, and the first lifting driving mechanism 22 can drive the first lifting platform 211a to lift so as to change the distance between the first lifting platform 211a and the bottom carrier 300.

[0061] Specifically, the abutting and blocking structure 21a is set as the first lifting platform 211a and the abutting member 212a, and this setting method of the abutting and blocking structure 21a is relatively simple. The first lifting driving mechanism 22 can be a cylinder, a hydraulic cylinder or a motor, etc. The first lifting driving mechanism 22 is arranged on the bracket 4, the driving end of the first lifting driving mechanism 22 is arranged upward, and the driving end of the first lifting driving mechanism 22 is connected to the lower surface of the first lifting platform 211a, so that the first lifting driving mechanism 22 can drive the first lifting platform 211a and the abutting member 212a to move up and down. The abutting and blocking structure 21a is connected to the first lifting driving mechanism 22 through the first lifting platform 211a, so that it is convenient to connect the abutting and blocking structure 21a with the first lifting driving mechanism 22, which is beneficial to driving the abutting and blocking structure 21a by the first lifting driving mechanism 22.

[0062] When the first blocking member is in the release position, the abutting member 212a is located below the bottom carrier 300, and there is a gap between the abutting member 212a and the bottom carrier 300 in the up and down direction. When the first blocking member is in the blocking position, the lower end of the abutting member 212a is located below the bottom carrier 300, and the upper end of the abutting member 212a is located above the bottom surface of the bottom carrier 300, so that the abutting member 212a at least partially abuts against the forward side of the bottom carrier 300. The abutting and blocking structure 21a abuts against the bottom carrier 300 through the abutting member 212a, which can reduce the contact area between the abutting and blocking structure 21a and the bottom carrier 300, and is beneficial to forming an effective contact between the abutting and blocking structure 21a and the bottom carrier 300 in the transportation direction of the conveyor line 400, so that the bottom carrier 300 can be better stopped at the pre-pressing station 410 through the abutting and blocking structure 21a.

[0063] The specific shape of the abutting member 212a can be set according to the actual situation. Optionally, please refer to Figures 1 to 3 , in this embodiment, the abutting member 212a is arranged in a cylindrical shape.

[0064] The specific number of the holding members 212a can be set according to the actual situation, and one or more holding members 212a can be provided. Optionally, please refer to Figures 1 to 3 , in this embodiment, two holding members 212a are provided. The bottom carrier 300 can be better stopped by the two holding members 212a.

[0065] Optionally, please refer to Figures 6 to 8 , in this embodiment, when the first blocking member is in the blocking position, the lifting structure 21b abuts against the lower side of the bottom carrier 300, and the bottom carrier 300 is lifted upward and separated from the conveying line 400.

[0066] Specifically, when the first blocking member is in the release position (please refer to Figure 1 ), the lifting structure 21b is located below the bottom carrier 300, and there is a gap reserved between the lifting structure 21b and the bottom carrier 300 in the vertical direction. When the first blocking member is in the blocking position (please refer to Figure 7 ), the upper surface of the lifting structure 21b abuts against the lower side of the bottom carrier 300, and the upper surface of the lifting structure 21b is located at a preset height above the conveying line 400, so that the bottom carrier 300 is lifted upward and separated from the conveying line 400. In this way, the stopping module 2 can lift the bottom carrier 300 upward through the lifting structure 21b, so that the bottom carrier 300 is lifted upward and separated from the conveying line 400, thereby realizing stopping the bottom carrier 300 at the pre-pressing station 410.

[0067] The specific shape of the lifting structure 21b can be set according to the actual situation. Optionally, please refer to Figure 7 , in this embodiment, the lifting structure 21b includes a second lifting platform 211b; when the first blocking member is in the blocking position, the second lifting platform 211b abuts against the lower side of the bottom carrier 300, and the bottom carrier 300 is lifted upward and separated from the conveying line 400; the stopping module 2 further includes a second lifting driving mechanism 23, the second lifting driving mechanism 23 is arranged below the bottom carrier 300, and the second lifting driving mechanism 23 can drive the second lifting platform 211b to lift to change the distance between the second lifting platform 211b and the bottom carrier 300.

[0068] Specifically, the lifting structure 21b is set as the second lifting platform 211b, and this setting method of the lifting structure 21b is relatively simple. The second lifting driving mechanism 23 can be a cylinder, a hydraulic cylinder or a motor, etc. The second lifting driving mechanism 23 is arranged on the bracket 4, the driving end of the second lifting driving mechanism 23 is arranged upward, and the driving end of the second lifting driving mechanism 23 is connected to the lower surface of the second lifting platform 211b, so that the second lifting driving mechanism 23 can drive the second lifting platform 211b to move up and down.

[0069] When the first blocking member is in the released position, the second lifting platform 211b is located below the bottom carrier 300, and there is a clearance reserved between the second lifting platform 211b and the bottom carrier 300 in the vertical direction. When the first blocking member is in the blocking position, the second lifting platform 211b abuts against the lower side of the bottom carrier 300, and the second lifting platform 211b is located at a preset height above the conveyor line 400, so that the bottom carrier 300 is lifted upward away from the conveyor line 400. In this way, the bottom carrier 300 can be lifted upward relatively smoothly by the second lifting platform 211b, and it is not easy for the bottom carrier 300 to fall from the second lifting platform 211b.

[0070] Optionally, in this embodiment, when the first blocking member is in the blocking position, the plugging structure 21c is inserted into the groove on the bottom carrier 300 to limit the bottom carrier 300 in the horizontal direction.

[0071] Specifically, a groove is provided on the top surface or the bottom surface of the bottom carrier 300. If the groove is provided on the top surface of the bottom carrier 300, when the first blocking member is in the released position, the plugging structure 21c is located above the bottom carrier 300; when the first blocking member is in the blocking position, the lower end of the plugging structure 21c is inserted into the groove on the bottom carrier 300. If the groove is provided on the bottom surface of the bottom carrier 300, when the first blocking member is in the released position (please refer to Figure 1 ), the plugging structure 21c is located below the bottom carrier 300; when the first blocking member is in the blocking position (please refer to Figure 8 ), the upper end of the plugging structure 21c is inserted into the groove on the bottom carrier 300. In this way, the stopping module 2 can insert the plugging structure 21c into the groove on the bottom carrier 300 to limit the bottom carrier 300 in the horizontal direction, so as to stop the bottom carrier 300 at the pre-pressing station 410.

[0072] Further, please refer to Figure 8 , in this embodiment, the plugging structure 21c includes a plugging member 211c; when the first blocking member is in the blocking position, the plugging member 211c is at least partially inserted into the groove 360 on the bottom carrier 300 to limit the bottom carrier 300 in the horizontal direction; the stopping module 2 further includes a third lifting driving mechanism, and the third lifting driving mechanism is arranged below the bottom carrier 300, and the third lifting driving mechanism can drive the plugging member 211c to lift to change the distance between the plugging member 211c and the bottom carrier 300.

[0073] Specifically, the plugging structure 21c is set as the plugging member 211c, and this setting method of the plugging structure 21c is relatively simple. The third lifting drive mechanism can be a cylinder, a hydraulic cylinder or a motor, etc. The third lifting drive mechanism is arranged on the bracket 4, the drive end of the third lifting drive mechanism is arranged upward, and the drive end of the third lifting drive mechanism is connected to the lower end of the plugging member 211c, so that the third lifting drive mechanism can drive the plugging member 211c to move up and down.

[0074] A groove 360 is arranged on the bottom surface of the bottom carrier 300. When the first blocking member is in the release position, the plugging member 211c is located below the bottom carrier 300; when the first blocking member is in the blocking position, the upper end of the plugging member 211c is inserted into the groove 360 on the bottom carrier 300.

[0075] When the preloading device 100 is provided with the second lifting platform 211b and the plugging member 211c at the same time, two lifting drive mechanisms (i.e., the second lifting drive mechanism 23 and the third lifting drive mechanism) can be provided corresponding to the second lifting platform 211b and the plugging member 211c respectively; or the second lifting platform 211b and the plugging member 211c can share a lifting drive mechanism (i.e., the second lifting drive mechanism 23 or the third lifting drive mechanism), and the plugging member 211c and the second lifting platform 211b are synchronously driven to lift through the shared lifting drive mechanism.

[0076] Optionally, please refer to Figure 1 and Figure 8 , in this embodiment, the lower end of the plugging member 211c is arranged on the upper surface of the second lifting platform 211b; when the first blocking member is in the blocking position, the upper end of the plugging member 211c is inserted into the groove 360 on the bottom carrier 300 to limit the bottom carrier 300 in the horizontal direction.

[0077] Specifically, the plugging member 211c is arranged on the upper surface of the second lifting platform 211b, so as to realize the synchronous lifting of the plugging member 211c and the second lifting platform 211b by the second lifting drive mechanism 23, that is, the plugging member 211c and the second lifting platform 211b are simultaneously driven to lift by the same lifting drive mechanism (i.e., the second lifting drive mechanism 23), and there is no need to separately set a lifting drive mechanism (i.e., the third lifting drive mechanism) for the plugging member 211c, thus simplifying the structural design of the stopping module 2.

[0078] As introduced above, in this embodiment, the first blocking member includes a resisting and blocking structure 21a, a lifting structure 21b and a plugging structure 21c. In other embodiments, the first blocking member may include one or two of the resisting and blocking structure 21a, the lifting structure 21b and the plugging structure 21c.

[0079] When the first blocking member includes a resisting and blocking structure 21a and a lifting structure 21b, when the second lifting platform 211b abuts against the lower side of the bottom carrier 300 and the bottom carrier 300 moves upward away from the conveyor line 400, part of the abutting member 212a may still abut against the advancing side of the bottom carrier 300; or the bottom carrier 300 may be lifted by the second lifting platform 211b to the upper side of the abutting member 212a to disengage the bottom carrier 300 from the abutting member 212a; or the first lifting drive mechanism 22 may drive the abutting member 212a to move downward to the release position so that the abutting member 212a is located on the lower side of the bottom carrier 300 to disengage the bottom carrier 300 from the abutting member 212a.

[0080] Optionally, please refer to Figure 4 and Figure 5 , in this embodiment, the preloading module 1 further includes a limiting structure 3, and when the blocking portion 21 is in the blocking position, the limiting structure 3 abuts against the upper side of the dental model 200.

[0081] Specifically, the limiting structure 3 is arranged on the side wall of the bracket 4. When the stopping module 2 lifts the bottom carrier 300 upward through the lifting structure 21b, through the abutting cooperation between the limiting structure 3 and the bottom carrier 300, precise positioning of the bottom carrier 300 in the up and down directions can be achieved, so that the bottom carrier 300 is accurately stopped at the preloading station 410.

[0082] The specific shape and style of the limiting structure 3 can be set according to the actual situation. For example, the limiting structure 3 can be arranged in a block shape, a plate shape or a column shape, etc. The specific number of the limiting structure 3 can also be set according to the actual situation. The limiting structure 3 can be provided with one or more. For example, please refer to Figure 7 , in this embodiment, two limiting structures 3 are respectively arranged on two opposite side walls of the bracket 4.

[0083] After the bottom carrier 300 being transported on the conveyor line 400 is stopped at the preloading station 410 by the stopping module 2, the preloading device 100 can press the pre-assembled dental model 200 and the bottom carrier 300 through the preloading module 1, so as to realize the automatic preloading and assembly between the dental model 200 and the bottom carrier 300.

[0084] Please refer to Figure 1 , the preloading module 1 is arranged on the bracket 4. The preloading module 1 includes a pressing member 11 movably arranged relative to the bracket 4 and a pressing and lifting drive mechanism 12 for driving the pressing member 11. The pressing and lifting drive mechanism 12 can be a cylinder, a hydraulic cylinder or a motor, etc. For example, the pressing and lifting drive mechanism 12 is a three-axis cylinder, and the three-axis cylinder is beneficial to ensuring the completion of pressing the dental model 200 with high strength and multiple frequencies, and improving the stability of the equipment.

[0085] Further, please refer to Figure 10 , in this embodiment, an exhaust speed control valve 13 is provided on the three-axis cylinder. By means of the exhaust speed control valve 13, the movement speed of the cylinder can be changed. In this control mode, the piston runs stably, and the cylinder can be controlled to press down the dental arch model 200 at a constant speed and impact force each time it moves up and down.

[0086] The pressing member 11 has an up-and-down movement stroke. Within the movement stroke of the pressing member 11, the pressing member 11 has a pressing position (please refer to Figure 4 , Figure 5 and Figure 7 ), and a standby position opposite to the pressing position (please refer to Figure 1 and Figure 3 ). When the pressing member 11 is in the standby position, the pressing member 11 is located at a preset height above the dental arch model 200. When the pressing member 11 is in the pressing position, the lower end of the pressing member 11 abuts against the upper surface of the dental arch model 200, so as to press-fit the pre-assembled dental arch model 200 and the base carrier 300 in the downward movement mode of the pressing member 11.

[0087] Optionally, please refer to Figure 5 and Figure 11 , in this embodiment, the pressing member 11 includes a pressing member main body 111, and a convex platform 112 protrudes from the end surface of the pressing member main body 111 close to the dental arch model 200. When the pressing member 11 is in the pressing position, the convex platform 112 abuts against the upper surface of the dental arch model 200.

[0088] Specifically, a convex platform 112 is provided on the lower end surface of the pressing member main body 111, so as to form a convex platform 112 at the lower end of the pressing member 11. The pressing member 11 abuts against the dental arch model 200 through the convex platform 112. Since the area of the lower surface of the convex platform 112 is smaller than the area of the lower end surface of the pressing member main body 111, the abutting area between the pressing member 11 and the dental arch model 200 can be reduced, so that the phenomenon that the dental arch model 200 warps is not likely to occur.

[0089] The specific position where the dental arch model 200 is pressed by the pressing member 11 can be set according to the actual situation. Optionally, please refer to Figure 5 and Figure 9 , in this embodiment, an information block 210 is provided in the middle of the U-shaped area of the dental arch model 200, and the maximum width of the convex platform 112 in the direction perpendicular to the movement direction is less than or equal to the maximum width of the information block 210; the convex platform 112 abuts against the upper surface of the dental arch model 200, specifically: the pressing member 11 abuts against the upper surface of the information block 210 of the dental arch model 200.

[0090] Specifically, when the pressing member 11 abuts against the dental arch model 200, the lower surface of the boss 112 abuts against the upper surface of the information block 210 of the dental arch model 200. Since the upper surface of the information block 210 is flatter than other areas of the dental arch model 200, when the pressing member 11 abuts against the upper surface of the information block 210 through the boss 112, it is not easy for the dental arch model 200 to tilt. Moreover, the information block 210 is approximately located at the center of the dental arch model 200, and pressing the center of the dental arch model 200 is beneficial to achieving overall force balance.

[0091] Optionally, in other embodiments, the maximum width of the pressing member 11 in the direction perpendicular to the movement direction is greater than or equal to the maximum width of the dental arch model 200; the pressing member 11 abuts against the upper side of the dental arch model 200, specifically: the pressing member 11 abuts against at least the posterior tooth regions 220 on both sides of the dental arch model 200 simultaneously.

[0092] Specifically, when the pressing member 11 abuts against the dental arch model 200, especially for the dental arch model 200 without the information block 210, the pressing member 11 can press the posterior tooth regions 220 on both sides of the dental arch model 200 simultaneously to achieve the positioning and force balance of the dental arch model 200. This pressing method of the dental arch model 200 is not easy for the dental arch model 200 to tilt.

[0093] Optionally, please refer to Figure 10 and Figure 11 , in this embodiment, the pressing member 11 includes an elastic abutting portion 113. When the pressing member 11 is in the pressing position, the elastic abutting portion 113 abuts against the upper surface of the dental arch model 200.

[0094] Specifically, by providing the elastic abutting portion 113 on the pressing member 11, and the pressing member 11 abuts against the dental arch model 200 through the elastic abutting portion 113, it makes the contact between the pressing member 11 and the dental arch model 200 a flexible contact, which is beneficial to applying a constant pressure to the dental arch model 200 through the pressing member 11 to ensure stable pressure. It will not only cause damage to the dental arch model 200, but also extend the service life of the pressing member 11.

[0095] There are various specific implementation ways to provide the elastic abutting portion 113 at the lower end of the pressing member 11. Optionally, please refer to Figure 10 and Figure 11 , in this embodiment, the pressing member 11 is a flexible member made of a flexible material. For example, the pressing member 11 is made of Teflon material, and the pressing member 11 made of Teflon material can prevent the pressing member 11 from adhering to the dental arch model 200.

[0096] Optionally, in other embodiments, an elastic layer is provided on the side of the pressing member 11 facing the dental arch model 200. By providing an elastic layer on the pressing member 11, the elastic layer serves as the elastic abutting portion 113.

[0097] Optionally, in other embodiments, the elastic abutting portion 113 includes a pressure head and an elastic body, and the elastic body is disposed on a side of the pressure head away from the dental model 200. The elastic abutting portion 113 is set as the pressure head and the elastic body, and the elastic telescopic of the elastic body is used to achieve the flexible contact between the elastic abutting portion 113 and the dental model 200.

[0098] Optionally, please refer to Figure 10 and Figure 11 , in this embodiment, the pre-pressing module 1 further includes a mounting frame 14 and a mounting plate 15. The mounting plate 15 is fixed to the driving end of the pressing and lifting driving mechanism 12 by bolts 16. The pressing member 11 is disposed on the lower surface of the mounting plate 15. The mounting frame 14 is arranged in an L shape, and the mounting frame 14 is fixed to the lower surface of the mounting plate 15 by bolts 16. Two mounting frames 14 are respectively disposed on both sides of the pressing member 11, and both mounting frames 14 are fixedly connected to the pressing member 11 by bolts 16.

[0099] Optionally, please refer to Figure 3 , in this embodiment, when the pressing member 11 is in the pressing position, the vertical distance value between the pressing member 11 and the bottom carrier 300 is a preset distance value.

[0100] Specifically, taking the bottom carrier 300 as a reference to set the lower limit position of the downward movement of the pressing member 11 can avoid the problem that the pressing member 11 moves downward too far and damages the dental model 200.

[0101] The present utility model further provides a shell-shaped tooth aligner production system, and the shell-shaped tooth aligner production system is used to produce shell-shaped tooth aligners. Figure 12 and Figure 13 shows a preferred embodiment of the production system provided by the present utility model.

[0102] Please refer to Figure 12 and Figure 13 , in this embodiment, the shell-shaped tooth aligner production system 1000 includes a pre-pressing device 100 and a conveyor line 400. A pre-pressing station 410 is formed on the conveyor line 400, and the pre-pressing device 100 is disposed at the pre-pressing station 410.

[0103] Specifically, since the pre-pressing device 100 adopts the technical solution of the above embodiment, it has the beneficial effects brought by the technical solution of the above embodiment. The pre-pressing device 100 entirely straddles the conveyor line 400. After the bottom carrier 300 is transferred to the pre-pressing station 410, the dental model 200 can be pre-pressed by the pre-pressing device 100. After the pre-pressing of the dental model 200 is completed, the bottom carrier 300 can be transferred backward by the conveyor line 400.

[0104] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A preloading device, characterized in that: Used to press the preassembled dental model and the base carrier, the base carrier is transported by a conveyor line, and the pre-pressing device includes: A pre-pressing die set, the pre-pressing die set is arranged at the pre-pressing station of the conveying line, the pre-pressing die set comprises a movably arranged pressing part, when the pressing part is in the pressing position, the pressing part abuts against the upper side of the dental and maxillary model, and presses the pre-assembled dental and maxillary model and the base carrier in a downward movement manner; A stopping module is arranged at the pre-pressing station, and the stopping module includes a movably arranged blocking part. When the blocking part is in the blocking position, the blocking part abuts against the bottom support carrier to stop the bottom support carrier being transported on the conveyor line at the pre-pressing station.

2. The preloading device according to claim 1, characterized in that: The blocking portion includes a first blocking member, and the first blocking member is arranged to be movable up and down; and / or, The blocking portion includes a second blocking member, and the second blocking member is arranged to be horizontally movable.

3. The preloading device according to claim 2, characterized in that: The first blocking member includes at least one of the following: A resisting and blocking structure, when the first blocking member is in the blocking position, the resisting and blocking structure resists against the forward side of the bottom support carrier; A lifting structure, when the first blocking member is in the blocking position, the lifting structure abuts against the lower side of the bottom support carrier, and the bottom support carrier moves upward away from the conveying line; The plug-in structure is inserted into the groove on the bottom bracket carrier when the first blocking member is in the blocking position to limit the bottom bracket carrier in the horizontal direction.

4. The preloading device according to claim 3, characterized in that: The resisting and blocking structure comprises a first lifting platform and a resisting member, wherein the resisting member is arranged on the upper surface of the first lifting platform; When the first blocking member is in the blocking position, the first lifting platform is located at the lower side of the bottom support carrier, and the abutting member at least partially abuts against the forward side of the bottom support carrier; The interception module also includes a first lifting drive mechanism, which is disposed at the lower side of the bottom support carrier. The first lifting drive mechanism can drive the first lifting platform to rise and fall to change the distance between the first lifting platform and the bottom support carrier.

5. The preloading device according to claim 3, characterized in that: The lifting structure includes a second lifting platform; When the first blocking member is in the blocking position, the second lifting platform abuts against the lower side of the bottom support carrier, and the bottom support carrier moves upward away from the conveying line; The interception module also includes a second lifting drive mechanism, which is arranged at the lower side of the bottom support carrier. The second lifting drive mechanism can drive the second lifting platform to rise and fall to change the distance between the second lifting platform and the bottom support carrier.

6. The preloading device according to claim 5, characterized in that: The plug-in structure includes a plug-in component, and the lower end of the plug-in component is arranged on the upper surface of the second lifting platform; When the first blocking member is in the blocking position, the upper end of the connector is inserted into the groove on the bottom bracket carrier to limit the bottom bracket carrier in the horizontal direction.

7. The preloading device according to claim 3, characterized in that: The plug-in structure includes a plug-in connector; When the first blocking member is in the blocking position, the plug-in member is at least partially inserted into the groove on the bottom bracket carrier to limit the bottom bracket carrier in the horizontal direction; The stopping module further includes a third lifting drive mechanism, which is disposed at the lower side of the bottom support carrier and can drive the connector to rise and fall to change the distance between the connector and the bottom support carrier.

8. The preloading device according to any one of claims 1 to 7, characterized in that: The pressing piece comprises a pressing piece body, and a boss is convexly provided on the end surface of the pressing piece body close to the dental model. When the pressing piece is in the pressing position, the boss abuts against the upper surface of the dental model.

9. The preloading device according to claim 8, characterized in that: An information block is provided in the middle of the U-shaped area of ​​the dental model, and the maximum width of the boss in the direction perpendicular to the movement direction is less than or equal to the maximum width of the information block; the boss abuts against the upper surface of the dental model, specifically: the pressing piece abuts against the upper surface of the information block of the dental model.

10. The preloading device according to any one of claims 1 to 7, characterized in that: The pressing piece includes an elastic abutment portion, and when the pressing piece is in the pressing position, the elastic abutment portion abuts against the upper surface of the dental model.

11. The preloading device according to claim 10, characterized in that: An elastic layer is arranged on a side of the pressing piece facing the dental model, or the elastic abutment portion includes a pressing head and an elastic body, and the elastic body is arranged on a side of the pressing head away from the dental model.

12. The preloading device according to any one of claims 1 to 7, characterized in that: The maximum width of the pressing piece in a direction perpendicular to the movement direction is greater than or equal to the maximum width of the dental model; the pressing piece abuts against the upper side of the dental model, specifically: the pressing piece abuts against the posterior tooth areas on both sides of the dental model at least simultaneously.

13. The preloading device according to any one of claims 1 to 7, characterized in that: When the pressing member is at the pressing position, the upper and lower spacing value between the pressing member and the bottom support carrier is a preset spacing value.

14. The preloading device according to any one of claims 1 to 7, characterized in that: The pre-compression mold set also includes a limiting structure, and when the blocking portion is in the blocking position, the limiting structure abuts against the upper side of the dental model.

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