A thrust rod assembly mechanism

Abstract

The present invention discloses a thrust rod combined assembly mechanism, which relates to the fields of automobile parts assembly and other mechanical assembly, including a press machine, a movable positioning assembly is installed on the working table of the press machine, and the positioning assembly includes two positioning seats, specifically a first positioning seat and a second positioning seat, the first positioning seat and the second positioning seat are spaced apart and the first positioning seat moves relative to the second positioning seat to adjust the spacing distance; the press machine is also provided with a main pressure head, the main pressure head is located directly above the working table, and the positioning assembly is movable so that the first positioning seat and the second positioning seat are respectively positioned directly below the main pressure head. By adopting the combined assembly structure of this scheme, not only the applicability is broadened, and it can meet the assembly of thrust rods of various specifications; it also greatly promotes the assembly efficiency and the quality of the finished product.

Description

Technical Field

[0001] The invention relates to the fields of automobile parts assembly and other mechanical assembly, and in particular to a mechanism mainly used for thrust rod assembly. Background Art

[0002] At present, the thrust rod assembly of truck thrust rods and other parts is mostly done by manual loading and pressing, which has the disadvantages of low efficiency, high labor intensity, and easy misassembly (wrong assembly of parts with different lengths, wrong arrow direction spraying).

[0003] Because our company assembles many types of thrust rod assemblies, more than 100 kinds, and the center distance of each type of thrust rod is different, we need a quick positioning mechanism that can meet the press-fitting of multiple types of thrust rod assemblies. At the same time, we also need to consider the issue of assembly efficiency. Therefore, our company plans to develop a device that can replace manual press-fitting and can adapt to thrust rods of various specifications. However, there is currently no reference mechanism information at home and abroad, so we need to develop it ourselves. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a thrust rod assembly mechanism; the assembly of thrust rods is mainly realized by the cooperation between mechanical structures, and at the same time, it can also adapt to the rapid positioning of thrust rods of various varieties with different hole spacings.

[0005] Specifically, the detailed technical solution proposed by the present invention is as follows:

[0006] A thrust rod assembly mechanism, comprising a press machine, a movable positioning assembly is installed on a working table of the press machine, the positioning assembly comprises two positioning seats, specifically a first positioning seat and a second positioning seat, the first positioning seat is spaced apart from the second positioning seat and the first positioning seat moves relative to the second positioning seat to adjust the spacing distance;

[0007] The press machine is also provided with a main pressing head, which is located directly above the work surface. The positioning assembly is movable so that the first positioning seat and the second positioning seat are respectively positioned directly below the main pressing head.

[0008] Furthermore, the two positioning seats have the same structure;

[0009] Each positioning seat comprises a circular seat plate, a countersunk circular hole is provided at the center of the seat plate, and a through positioning slot hole with a square structure is provided at the center of the countersunk circular hole; the seat plate, the countersunk circular hole and the positioning slot hole are coaxial.

[0010] Furthermore, the positioning slot is in the form of a quadrangular pyramid structure; an opening of the positioning slot facing the countersunk circular hole is larger than an opening of the positioning slot away from the countersunk circular hole.

[0011] Furthermore, the positioning assembly includes a slide; a first driving source is provided under the work surface, and the first driving source is connected to and drives the slide to move laterally on the work surface;

[0012] The second positioning seat is fixed to the slide table via a supporting seat;

[0013] The first positioning seat is movably mounted on the slide table through a moving block; the movement direction of the first positioning seat relative to the second positioning seat is the same as the movement direction of the slide table.

[0014] Furthermore, an ejector rod is fixedly installed inside the support seat, and another ejector rod is also fixedly installed inside the movable block;

[0015] The two ejector rods are configured to perform an ejection movement after the thrust rod is assembled, so as to eject the thrust rod from the first positioning seat and the second positioning seat.

[0016] Furthermore, each of the seat plates is provided with at least two countersunk arc holes; the virtual circle formed by the countersunk arc holes is coaxial and collinear with the seat plate;

[0017] The matching connection between the screw and the countersunk arc hole enables the first positioning seat and the movable block to be finely adjusted, rotated and fixed; similarly, the second positioning seat and the supporting seat to be finely adjusted, rotated and fixed.

[0018] Furthermore, the positioning assembly also includes a guide platform;

[0019] The slide table is provided with a positioning notch, and the guide table is positioned and fixed on the slide table through the positioning notch;

[0020] The guide platform is provided with a slideway, and the moving block is built in the slideway; a second driving source is also fixedly provided on the guide platform, and the second driving source is connected to the moving block and drives the moving block to move along the extension direction of the slideway.

[0021] Furthermore, the second driving source is a screw-handwheel combination structure.

[0022] Furthermore, a limiting seat is fixed on the work surface, and the limiting seat is configured to abut against the moving block to ensure that the first positioning seat is aligned with the main pressure head.

[0023] Furthermore, a printing structure is provided on the end surface of the moving block;

[0024] The printing structure includes a movable shaft and a printing template, wherein the movable shaft is movably and rotatably connected to the moving block; the printing template is fixed on the movable shaft; a model is provided at the other end of the printing template; the printing template is moved so that the movable shaft rotates until the model on the printing template contacts the surface of the thrust rod.

[0025] The beneficial effects achieved by adopting this technical solution are:

[0026] The combined assembly mechanism provided by the present invention has a simple structure and proposes two positioning seats, namely a first positioning seat and a second positioning seat. The two positioning seats are used to complete the loading and positioning of the thrust rod, and the first positioning seat here can also be adjusted and moved relative to the second positioning seat, thereby being able to meet the loading and installation of thrust rods with different center distances and different specifications; finally, with the cooperation of the press, the final combined assembly of the thrust rod is completed.

[0027] By adopting the combined assembly structure of this solution, not only the applicability is broadened to meet the assembly of thrust rods of various specifications, but also the assembly efficiency and the quality of the finished product are greatly promoted. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the overall three-dimensional structural diagram of the combined assembly mechanism in this scheme.

[0029] Figure 2 It is a three-dimensional structural diagram of the positioning component.

[0030] Figure 3 This is a top view of the positioning seat.

[0031] Figure 4 It is a cross-sectional structural diagram of the second positioning seat.

[0032] Figure 5 A top plan view of the positioning assembly.

[0033] Figure 6 A thrust rod connecting pin of one specification has an inclined angle.

[0034] Figure 7 Another specification of the thrust rod connecting pin has an inclined angle.

[0035] Wherein: 10 press machine, 11 working table, 12 main press head, 20 positioning assembly, 21 first positioning seat, 22 second positioning seat, 23 slide, 24 support seat, 25 moving block, 26 guide table, 27 limit seat, 28 movable shaft, 29 printing template, 31 first driving source, 32 second driving source, 200 slide, 211 seat plate, 212 countersunk round hole, 213 positioning slot hole, 214 countersunk arc hole. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] This embodiment provides a thrust rod combined assembly mechanism, which is used to replace the current manual press-fit operation method, reducing the labor intensity of the operator; at the same time, in this solution, the proposed combined assembly structure can also adapt to thrust rods of different specifications and different center distances, that is, it can meet the requirements of combined assembly of thrust rods of various specifications.

[0038] In this embodiment, see Figure 1 The provided combined assembly mechanism includes a press machine 10, which has a work surface 11 and a main pressing head 12; the work surface 11 is mainly used to provide an installation plane and a platform for the installation and fixation of other components; the main pressing head 12 is used to press the bushing into the thrust rod to complete the final combined assembly of the thrust rod.

[0039] Specifically, in this embodiment, a movable positioning assembly 20 is installed on the work surface 11 of the press 10. The positioning assembly 20 here can adapt to the positioning and placement of thrust rods of different specifications and different center distances, so that the main press head 12 can press the bushing into the thrust rod.

[0040] In order to facilitate in-depth understanding, the specific composition structure of the positioning component 20 is introduced in detail below.

[0041] In this proposal, see Figure 2 The positioning assembly 20 includes two positioning seats, specifically a first positioning seat 21 and a second positioning seat 22. The first positioning seat 21 is spaced apart from the second positioning seat 22 and the first positioning seat 21 moves relative to the second positioning seat 22 to adjust the spacing distance.

[0042] It can be understood that the first positioning seat 21 in the present solution can be moved relative to the second positioning seat 22, thereby realizing the adjustment of the spacing position between the two; the first positioning seat 21 and the second positioning seat 22 here are the main components for placing the thrust rod, and the first positioning seat 21 is designed to be adjustable and movable, so as to realize the adaptation to thrust rods with different center distances; that is, the more than one hundred specifications of thrust rods produced by the company can be stably and accurately placed on the first positioning seat 21 and the second positioning seat 22 under the adjustment of the first positioning seat 21.

[0043] The main pressing head 12 mentioned above is located directly above the work surface 11, and is mainly used to press the bushing into the thrust rod; however, in general designs, in order to ensure the pressing accuracy of the main pressing head 12, the position of the main pressing head 12 is fixed; however, both ends of the thrust rod of this solution need to be pressed with bushings; therefore, in order to solve this problem, we propose a method in which the main pressing head 12 remains stationary, while the positioning assembly 20 moves.

[0044] That is, after we place the thrust rod on the positioning seat, we can move the positioning assembly 20 so that the first positioning seat 21 and the second positioning seat 22 are respectively aligned directly below the main pressure head 12; when the second positioning seat 22 is directly below the main pressure head 12, the corresponding position of the thrust rod that needs to be pressed is also directly below the main pressure head 12, and the pressing operation of the main pressure head 12 can press the bushing into the corresponding position of the thrust rod; similarly, when the first positioning seat 21 is directly below the main pressure head 12, the corresponding position of the thrust rod that needs to be pressed is also directly below the main pressure head 12, and the pressing operation of the main pressure head 12 can press the bushing into the corresponding position of the thrust rod. By moving the positioning assembly 20, the first positioning seat 21 and the second positioning seat 22 are respectively aligned with the positions of the main pressure head 12, so that the bushings are respectively pressed at both ends of the thrust rod.

[0045] In order to simplify the structure, in this embodiment, the two positioning seats (the first positioning seat 21 and the second positioning seat 22 ) mentioned above have the same structure.

[0046] For details, see Figure 3 Each positioning seat includes a circular seat plate 211, a countersunk circular hole 212 is opened at the center of the seat plate 211, and a through and square positioning slot 213 is opened at the center of the countersunk circular hole 212; the seat plate 211, the countersunk circular hole 212 and the positioning slot 213 are coaxial.

[0047] Here, the specific structure of each positioning seat (the first positioning seat 21 and the second positioning seat 22) is designed in detail, see Figure 2 , Figure 6 - Figure 7 This is mainly because there are connecting pins at both ends of the thrust rod. In order to ensure that the thrust rod can be stably connected to the positioning seat, a coaxial seat plate 211, a countersunk round hole 212 and a positioning slot 213 are designed according to the specific structure of the connecting pin; ensuring that the thrust rod can be more stable when placed on the positioning seat without shaking or deviation.

[0048] Optionally, the positioning slot 213 is a quadrangular pyramid structure; the opening of the positioning slot 213 facing the countersunk circular hole 212 is larger than the opening of the end away from the countersunk circular hole 212. With this design, the connecting pin of the thrust rod can be better guided to cooperate with the positioning slot 213.

[0049] In this embodiment, the positioning assembly 20 mentioned above also includes a slide 23; at the same time, a first driving source 31 is provided under the work surface 11, and the first driving source 31 is connected to and drives the slide 23 to move laterally on the work surface 11; the slide 23 here serves as the basic plate of the positioning assembly 20, so it can be understood that the positioning assembly 20 introduced above can move relatively on the work surface 11, which actually means that the slide 23 is driven by the first driving source 31 to move with the remaining components.

[0050] See also Figure 2 - Figure 4 The second positioning seat 22 mentioned above is fixed on the slide 23 through the support seat 24; the first positioning seat 21 is movably mounted on the slide 23 through the moving block 25; the movement direction of the first positioning seat 21 relative to the second positioning seat 22 is the same as the movement direction of the slide 23.

[0051] That is, in this solution, the first positioning seat 21 can move relative to the second positioning seat 22 to accommodate thrust rods of different specifications and different center distances; at the same time, the slide 23 can also move on the work surface 11 to respectively send the first positioning seat 21 and the second positioning seat 22 to the bottom of the main pressure head 12.

[0052] In this embodiment, ejector rods are fixedly installed inside the support seat 24 and inside the movable block; the two ejector rods are configured to perform an ejection movement after the thrust rod is assembled to eject the thrust rod out of the first positioning seat 21 and the second positioning seat 22. The thrust rod is ejected by the ejector rod, which is convenient for manual unloading in the later stage.

[0053] In the thrust rod structure we designed, there are situations where the thrust rod connecting pin has different rotation angles, such as in the example Figure 6 - Figure 7 Of the two thrust rods, Figure 6 The connecting pin of the middle thrust rod is obviously Figure 7 The connecting pins of the middle thrust rod are different, and the connecting pins of the two specifications have different angles. If the structures of the first positioning seat 21 and the second positioning seat 22 cannot be changed, the thrust rods of different angles cannot be pressed into place on the tooling provided by this solution according to the standards required by the drawings, and other tooling needs to be redesigned, increasing the cost investment.

[0054] In order to solve this problem and achieve the purpose of reducing costs at the same time, we have proposed a fine-tuning operation method, that is, instead of replacing or changing the current structural design of the first locating seat 21 and the second locating seat 22, only fine-tuning the positions of the first locating seat 21 and the second locating seat 22 in actual operation can perfectly adapt thrust rods with different angles to be used on the same tooling, which greatly promotes cost reduction.

[0055] For details, see Figure 3 , Figure 5 At least two countersunk arc holes 214 are formed on each seat plate 211; the virtual circle formed by the countersunk arc holes 214 is coaxial and collinear with the seat plate 211; the matching connection between the screws (generally bolts or screws) and the countersunk arc holes 214 enables the first positioning seat 21 to fine-tune the rotation and fixation of the movable block; similarly, the second positioning seat 22 to fine-tune the rotation and fixation of the support seat.

[0056] It can be understood that in order to adapt to the different angles of the connecting pins of such thrust rods, the operator loosens the first positioning seat 21 and the second positioning seat 22 according to the thrust rods of such specifications, and rotates the first positioning seat 21 and the second positioning seat 22 to a certain angle to adapt to such thrust rods.

[0057] Therefore, in this proposal, see Figure 2 - Figure 5 The proposed positioning assembly 20 can adapt to thrust rods of different specifications, specifically, adjusting the spacing between the first positioning seat 21 and the second positioning seat 22 to meet the needs of thrust rods with different center distances; fine-tuning the first positioning seat 21 and the second positioning seat 22 of the rotating joint to meet the needs of thrust rods with different connecting pin angles.

[0058] In this solution, the positioning assembly 20 also includes a guide platform 26; a positioning notch is opened on the slide 23, and the guide platform 26 is positioned and fixed on the slide 23 through the positioning notch; a slideway 200 is provided on the guide platform 26, and the moving block 25 mentioned above is built into the slideway 200 here; the guidance of the slideway 200 ensures the stability of the movement process of the first positioning seat 21, and also ensures the movement accuracy.

[0059] The movement of the moving block 25 is specifically achieved by the second driving source 32 . Specifically, the second driving source 32 is fixedly provided on the guide platform 26 . The second driving source 32 is connected to the moving block 25 and drives the moving block 25 to move along the extension direction of the slideway 200 .

[0060] In this embodiment, the second driving source 32 is a screw-handwheel combination structure, that is, a screw is screwed to the tail of the moving block 25, the screw is movably connected to the guide platform 26, and a handwheel is fixed to the other end of the screw, and the operator can drive the moving block 25 by turning the handwheel.

[0061] The handwheel is specially designed here for two main purposes. First, to achieve a wide range of adjustment between the two locating seats (the first locating seat and the second locating seat); second, because there is a gap in the assembly of the thrust rod connecting pin, in order to ensure the position accuracy of the thrust rod installed on the locating seat, after placing the thrust rod on the locating seat, we can continue to fine-tune the handwheel and fine-tune the moving block 25 within a small range to improve the installation accuracy of the thrust rod.

[0062] In this embodiment, a limiting seat 27 is further fixed on the work surface 11 , and the limiting seat 27 is configured to abut against the moving block 25 to ensure that the first positioning seat 21 is aligned with the main pressing head 12 .

[0063] Optionally, we also provide a printing structure on the end surface of the moving block 25; the printing structure here includes a movable shaft 28 and a printing template 29, the movable shaft 28 is movably connected to the moving block 25; the printing template 29 is fixed on the movable shaft 28; a model is provided at the other end of the printing template 29; the printing template 29 is moved to rotate the movable shaft 28 until the model on the printing template 29 contacts the surface of the thrust rod. Then the operator sprays the model here, and a standard graphic word can be formed on the surface of the thrust rod.

[0064] The model in this embodiment is an arrow. After the model on the printing template 29 contacts the surface of the thrust rod, spraying can be performed to print the arrow on the surface of the thrust rod.

[0065] The following is a brief introduction to your specific usage:

[0066] Shake the handwheel and drive the moving block 25 to quickly move to the required position of a certain type of thrust rod assembly (thrust rod that has not completed the press-fitting requirements) through the screw, put the thrust rod assembly into the left and right positioning seats, and make fine adjustments through the handwheel to ensure that both ends of the thrust rod assembly are completely placed in the left and right positioning seats, and put the bushing assembly into the thrust rod heads at both ends; then flip the printing template 29, turn it over to the thrust rod assembly, spray the arrow and then move it away.

[0067] Start the press machine, and the main press head 12, driven by the main oil cylinder, presses the rubber bushing into the thrust rod. After the press-fitting is completed, the slide 23 moves the thrust rod assembly to the moving block 25 to contact the limit seat 27. The travel switch sends a signal, and the press-fitting action is repeated to complete the press-fitting of the bushings at both ends. After completion, the thrust rod assembly is ejected by the left and right ejector rods, and then the material is unloaded manually.

[0068] The combined assembly mechanism provided by this solution has a simple structure and proposes two positioning seats, namely the first positioning seat 21 and the second positioning seat 22. The two positioning seats are used to complete the loading and positioning of the thrust rod, and the first positioning seat here can also be adjusted and moved relative to the second positioning seat, thereby being able to meet the loading and installation of thrust rods with different center distances and different specifications; finally, with the cooperation of the press, the final combined assembly of the thrust rod is completed. In addition, it should be noted that the assembly mechanism provided by this solution can be suitable for fully automatic operation or semi-automatic operation, and the specific usage method can be set according to the actual situation on site.

[0069] By adopting the combined assembly structure of this solution, not only the applicability is broadened to meet the assembly of thrust rods of various specifications, but also the assembly efficiency and the quality of the finished product are greatly promoted.

[0070] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0071] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the technical product is usually placed when in use. They are only for the convenience of describing the present technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present technology. In addition, "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Therefore, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0072] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0073] In the description of this technology, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0074] The above are only preferred implementations of the present technology. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present technology, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the technical concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present technology.

Claims

1. A thrust rod assembly mechanism, comprising a press assembly machine (10), characterized in that: A movable positioning assembly (20) is installed on the working table (11) of the press machine (10), and the positioning assembly (20) includes two positioning seats, specifically a first positioning seat (21) and a second positioning seat (22), the first positioning seat (21) and the second positioning seat (22) are arranged at a distance, and the first positioning seat (21) moves relative to the second positioning seat (22) to adjust the spacing distance; the press machine (10) is also provided with a main pressing head (12), and the main pressing head (12) is located directly above the working table (11). The positioning assembly ( 20) is movable so that the first positioning seat (21) and the second positioning seat (22) are respectively aligned directly below the main pressure head (12); the two positioning seats have the same structure; each positioning seat comprises a circular seat plate (211), a countersunk circular hole (212) is provided at the center of the seat plate (211), and a through positioning slot hole (213) in a square structure is provided at the center of the countersunk circular hole (212); the seat plate (211), the countersunk circular hole (212) and the positioning slot hole (213) are coaxial; the positioning slot hole (213) The positioning slot (213) has a four-sided pyramid structure; the opening of the positioning slot (213) at one end facing the countersunk circular hole (212) is larger than the opening at the end away from the countersunk circular hole (212); the positioning assembly (20) includes a slide (23); a first driving source (31) is provided under the working table (11), and the first driving source (31) is connected to and drives the slide (23) to move horizontally on the working table (11); the second positioning seat (22) is fixed to the slide (23) through a supporting seat (24); the first positioning seat (21) is movably mounted on the slide (23) through a moving block (25); the movement direction of the first positioning seat (21) relative to the second positioning seat (22) is the same as the movement direction of the slide (23); each seat plate (211) At least two countersunk arc holes (214) are provided on the top; the virtual circle formed by the countersunk arc holes is coaxial and collinear with the seat plate (211); the matching connection between the screw and the countersunk arc holes (214) enables the first positioning seat (21) and the moving block to be finely adjusted, rotated and fixed; and similarly enables the second positioning seat (22) and the supporting seat (24) to be finely adjusted, rotated and fixed.

2. A thrust rod assembly mechanism according to claim 1, characterized in that: An ejector rod is fixedly mounted inside the support seat (24), and another ejector rod is also fixedly mounted inside the moving block; the two ejector rods are configured to perform an ejection movement after the thrust rod is assembled, so as to eject the thrust rod from the first positioning seat (21) and the second positioning seat (22).

3. A thrust rod assembly mechanism according to any one of claims 1 to 2, characterized in that: The positioning assembly (20) further comprises a guide platform (26); a positioning notch is provided on the slide (23), and the guide platform (26) is positioned and fixed on the slide (23) through the positioning notch; a slideway (200) is provided on the guide platform (26), and the moving block (25) is built in the slideway (200); a second driving source (32) is also fixedly provided on the guide platform (26), and the second driving source (32) is connected to the moving block (25) and drives the moving block (25) to move along the extension direction of the slideway (200).

4. A thrust rod assembly mechanism according to claim 3, characterized in that: The second driving source (32) is a screw-handwheel combination structure.

5. A thrust rod assembly mechanism according to claim 4, characterized in that: A limiting seat (27) is also fixed on the work surface (11), and the limiting seat (27) is configured to abut against the moving block (25) to ensure that the first positioning seat (21) is aligned with the main pressure head (12).

6. A thrust rod assembly mechanism according to any one of claims 1 to 2, characterized in that: The end surface of the moving block (25) is also provided with a printing structure; the printing structure comprises a movable shaft (28) and a printing template (29); the movable shaft (28) is movably and rotatably connected to the moving block (25); the printing template (29) is fixed on the movable shaft (28); a model is provided at the other end of the printing template (29); the printing template (29) is moved so that the movable shaft (28) rotates until the model on the printing template (29) contacts the surface of the thrust rod.

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