Vacuum-pumping forming device for orthopedic model

Abstract

The utility model discloses an orthopedics model vacuumizing forming device, and relates to the technical field of orthopedics model production, the orthopedics model vacuumizing forming device comprises a tank body, one end of the tank body is a feeding end, and a feeding port is formed in the feeding end; the sealing ring is mounted at the feeding end; the extending annular plate is fixedly arranged on the side wall of the tank body and is flush with the feeding end; the sealing cover can be buckled at the feeding end to seal the feeding hole and is propped against the sealing ring; a plurality of fixing holes are formed in the extension ring plate and the sealing cover, the positions of the fixing holes of the extension ring plate and the sealing cover are opposite, and bolts penetrate through the fixing holes and then are in threaded connection and fastening with nuts; one end of the negative pressure pipe is communicated with the interior of the tank body; and the pressure relief pipe is provided with a valve and is communicated with the interior of the tank body. The method has the effects of improving the production quality of the orthopaedic model made of the transparent material and reducing the production input cost of the orthopaedic model made of the transparent material.

Description

Technical Field

[0001] This application relates to the technical field of orthopedic model production, and in particular to an orthopedic model vacuum forming device. Background Technology

[0002] Orthopedic models are used for orthopedic teaching and to demonstrate related human bone structures. Some orthopedic models are made of transparent materials to facilitate teaching and demonstration. During the production process, raw materials are injected into corresponding mold cavities for pressing and then heated and molded within a container. However, this method of production for transparent orthopedic models generates a large number of air bubbles inside. Because the material is transparent, these bubbles affect product quality and also hinder its use in teaching.

[0003] Experiments have shown that the negative pressure environment created by vacuuming can remove air bubbles from the model, thereby improving product quality. However, there is no suitable vacuuming equipment for orthopedic model production, and commercially available vacuuming equipment is too expensive to be purchased in large quantities. On the other hand, the negative pressure requirements for orthopedic model production are relatively low, and complete vacuuming is not necessary. Therefore, if commercially available vacuuming equipment were used, most of its functions would be unnecessary, clearly failing to meet the production requirements of orthopedic models. Utility Model Content

[0004] The purpose of this utility model application is to improve the problem that existing vacuum equipment used in orthopedic model production is not only costly but also has low equipment performance utilization. This application provides a self-developed orthopedic model vacuum forming device.

[0005] The orthopedic model vacuum molding device provided in this application adopts the following technical solution:

[0006] A vacuum molding device for orthopedic models, comprising:

[0007] The tank body has a feeding end at one end, which is equipped with a feeding port.

[0008] The sealing ring is installed on the feed end;

[0009] An extension ring plate is fixed to the side wall of the tank and flush with the feed end.

[0010] The cap can be fastened to the feed end to seal the feed inlet and abut against the sealing ring;

[0011] Multiple fixing holes are provided on both the extension ring plate and the cover. The fixing holes on the extension ring plate and the cover are positioned opposite each other. The fixing holes allow bolts to pass through and be threadedly connected to nuts for fastening.

[0012] The negative pressure pipe is connected to the inside of the tank at one end and to the vacuum pump at the other end.

[0013] The pressure relief pipe, equipped with a valve, connects to the inside of the tank.

[0014] Optionally, heating wires are wound around the side walls of the tank.

[0015] Optionally, the tank sidewall is wrapped with a heat insulation layer, which presses the heating wire against the tank sidewall.

[0016] Optionally, the cover has a sealing groove. When the cover is fastened, the sealing ring fits tightly against the inner wall of the sealing groove, and the cover fits against the feed end.

[0017] Optionally, a connecting frame is fixed to the side wall of the tank, the connecting frame is located near the sealing end, the connecting frame is rotatably connected to a crossbeam, and the cover is installed on the crossbeam;

[0018] The tank sidewall is rotatably connected to a fixed frame. After the fixed frame rotates, it can fit the part of the crossbeam away from the connecting frame. The end of the fixed frame away from its own rotation axis is threaded with a fixing bolt, which is used to tighten against the crossbeam.

[0019] Optionally, a recessed groove may be provided on the portion of the crossbeam opposite the fixing bolts.

[0020] Optionally, the cover is fixed with a positioning frame, and the crossbeam passes through the positioning frame and is rotatably connected to the positioning frame.

[0021] Optionally, the cap is equipped with a pressure gauge to monitor the pressure inside the tank, and a thermometer to detect the temperature inside the tank.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. After the cast orthopedic mold is placed into the tank along with the container, the inlet is sealed with a cap and the cap is fixed by bolts passing through the fixing holes and threaded with nuts. Then, a vacuum is drawn by a negative pressure pump to create a negative pressure environment in the tank, which sucks out the air bubbles in the unformed mold, thereby improving the quality of mold production. This device is also easy to make and effectively reduces the production cost.

[0024] 2. The rotating design of the crossbeam allows the cover to be rotated and fastened at the feed end, and the other end of the crossbeam is fastened by the rotating fixing frame and tightened by the fixing bolts, thus achieving the pre-fixation of the cover. This further improves the sealing effect of the cover on the feed inlet, reduces the probability of the cover breaking open, and improves the safety of the equipment.

[0025] 3. The rotating connection between the crossbeam and the cover can effectively press the cover towards the feed end through the pressure of the crossbeam, which improves the error margin in the manufacturing of the device and further reduces the manufacturing cost;

[0026] 4. The heating wire can effectively heat the can body, raising the internal temperature of the can body, thereby enabling mold forming and mold negative pressure bubble extraction to occur simultaneously, improving the efficiency of orthopedic mold forming. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application;

[0028] Figure 2 This is a partial schematic diagram showing the open state of the cap in Embodiment 1 of this application;

[0029] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0030] In the diagram, 1. Tank body; 11. Feeding end; 111. Feeding port; 112. Sealing ring; 12. Extension ring plate; 13. Heating wire; 14. Insulation layer; 15. Negative pressure pipe; 16. Pressure relief pipe; 2. Cover; 21. Fixing hole; 22. Positioning frame; 23. Sealing groove; 24. Pressure gauge; 25. Thermometer; 3. Pre-tightening assembly; 31. Connecting frame; 32. Crossbeam; 321. Sinking trough; 33. Fixing frame; 331. Fixing bolt. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a vacuum molding device for orthopedic models.

[0033] Example 1

[0034] refer to Figure 1 and 2The orthopedic model vacuum forming device includes a tank body 1 and a cover 2. The tank body 1 is vertically arranged with a feeding end 11 at the top and a feeding port 111 in the middle of the feeding end 11. The tank body 1 itself is a seamless steel pipe. A sealing ring 112, made of rubber, is embedded near the feeding port 111 at the feeding end 11. An extension ring plate 12 is fixed to the side wall of the tank body 1, and the extension ring plate 12 is flush with the upper surface of the feeding end 11. A sealing groove 23, which is an annular groove, is formed on the lower surface of the cover 2. The cover 2 can be fastened to the feeding end 11 to close the feeding port 111. At this time, the cover 2 can fit against the feeding end 11 and the extension ring plate 12, and the sealing ring 112 and the sealing groove 23 are tightly fitted together. A pre-tightening component 3 is provided between the tank body 1 and the cover 2 to drive the cover 2 to rotate and pre-fix the cover 2 in the position of closing the feeding port 111. Both the extension ring plate 12 and the cover 2 have multiple fixing holes 21. The fixing holes 21 on the extension ring plate 12 and the cover 2 are positioned opposite each other, and the fixing holes 21 allow bolts to pass through and be threadedly connected to nuts for fastening. The cover 2 is equipped with a pressure gauge 24 for monitoring the pressure inside the tank 1. The cover 2 is also equipped with a thermometer 25 for detecting the temperature inside the tank 1.

[0035] A negative pressure pipe 15 is connected to the side wall of the tank 1. One end of the negative pressure pipe 15 is connected to the inside of the tank 1, and the other end is connected to a vacuum pump. It is used to extract air from the tank 1 and create a negative pressure environment inside the tank 1. A pressure relief pipe 16 is also connected to the side wall of the tank 1. The pressure relief pipe 16 is equipped with a valve. One end of the pressure relief pipe 16 is connected to the inside of the tank 1, and the other end is connected to the outside. A heating wire 13 is wound around the side wall of the tank 1 for heating the tank 1. The side wall of the tank 1 is also wrapped with a heat insulation layer 14, which presses the heating wire 13 against the side wall of the tank 1. In this embodiment, the heat insulation layer 14 is made of fluororubber material.

[0036] After the orthopedic model material is injected and fixed in the mold cavity, it is placed into the tank 1, and the cap 2 is fastened to the feed end 11 and pre-fixed by the pre-tightening component 3. Then, bolts are passed through the fixing hole 21 and threaded with nuts to press and fix the cap 2 and the extension ring plate 12. The sealing ring 112 and the sealing groove 23 are tightly fitted together, effectively improving the sealing performance of the cap 2 to the feed inlet 111. The extension ring plate 12 not only provides installation space for the bolts but also increases the contact area with the cap 2, thereby improving the sealing effect of the feed inlet 111. After the cap 2 is fixed, the air inside the tank 1 is extracted by a vacuum pump, creating a negative pressure space inside the tank 1. The pressure value is observed by the pressure gauge 24, which facilitates the removal of air bubbles from the mold material. The heating wire 13 heats the tank 1, thereby increasing the temperature inside the tank 1 and improving the efficiency of orthopedic mold forming.

[0037] refer to Figure 1 and Figure 2The pre-tightening assembly 3 includes a connecting frame 31, a crossbeam 32, and a fixing frame 33. The connecting frame 31 is fixed to the side wall of the tank body 1, located near the feed end 11. The fixing frame 33 is rotatably connected to the side wall of the tank body 1, located near the feed end 11 and opposite to the connecting frame 31. In this embodiment, both the connecting frame 31 and the fixing frame 33 are located at the top of the tank body 1. The crossbeam 32 is rotatably connected to the connecting frame 31. A positioning frame 22 is fixed at the middle position of the upper surface of the cover 2. The crossbeam 32 passes through the positioning frame 22 and is rotatably connected to the positioning frame 22. The crossbeam 32 does not abut against the cover 2. After the fixing frame 33 rotates, it can fit the end of the crossbeam 32 away from the connecting frame 31. The end of the fixing frame 33 away from its own rotation axis is threaded with a fixing bolt 331. The part of the crossbeam 32 fitted by the fixing frame 33 has a sinkhole 321, and the fixing bolt 331 can abut against the sinkhole 321.

[0038] The crossbeam 32 not only drives the cap 2 to rotate and engage, but also connects the cap 2 to the tank body 1, reducing the probability of the cap 2 being lost. The fixed frame allows the crossbeam 32 to be fitted around it by rotation and secured by the rotating fixing bolts 331. The crossbeam 32 presses the cap 2 downwards, achieving pre-fixation of the cap 2 and improving the efficiency and stability of pre-fixation. The sinking trough 321 enhances the firmness of the fixing bolts 331 in securing the crossbeam 32. The rotational arrangement of the crossbeam 32 and the positioning frame 22 increases the production assembly error margin between the crossbeam 32 and the cap 2, improving the effect of the crossbeam 32 pressing the cap 2 towards the feed end 11. The crossbeam 32 also reduces the probability of the cap 2 breaking open, improving equipment safety.

[0039] Example 2

[0040] refer to Figure 3 The difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the tank 1 is laid flat in a horizontal position with a support frame at the bottom, and the negative pressure pipe 15 and the pressure relief pipe 16 are both located at the top of the tank 1. This method enables the production and use of longer orthopedic models, such as leg bones.

[0041] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An orthopaedic model vacuum forming apparatus, characterized by: include The tank body (1) has a feed end (11) at one end, and the feed end (11) has a feed port (111); A sealing ring (112) is installed on the feed end (11); An extension ring plate (12) is fixed to the side wall of the tank body (1) and flush with the feed end (11); The cap (2) can be fastened to the feed end (11) to close the feed port (111) and abut against the sealing ring (112); Multiple fixing holes (21) are provided on both the extension ring plate (12) and the cover (2). The fixing holes (21) of the extension ring plate (12) and the cover (2) are positioned opposite each other. The fixing holes (21) allow the bolts to pass through and be threadedly connected to the nuts for fastening. The negative pressure pipe (15) is connected to the inside of the tank (1) at one end and to the vacuum pump at the other end. The pressure relief pipe (16) is equipped with a valve and is connected to the inside of the tank (1).

2. The orthopedic model vacuum forming device of claim 1, wherein: Heating wires (13) are wound around the side wall of the tank (1).

3. The orthopedic model vacuum forming device of claim 2, wherein: The side wall of the tank (1) is covered with a heat insulation layer (14), which presses the heating wire (13) against the side wall of the tank (1).

4. The orthopedic model vacuum forming device of claim 1, wherein: The cover (2) has a sealing groove (23). When the cover (2) is fastened, the sealing ring (112) is pressed against the inner wall of the sealing groove (23), and the cover (2) is pressed against the feed end (11).

5. The orthopedic model vacuum forming device of claim 1, wherein: A connecting frame (31) is fixedly provided on the side wall of the tank body (1). The connecting frame (31) is located near the sealing end. The connecting frame (31) is rotatably connected to a crossbeam (32). The cover (2) is installed on the crossbeam (32). The tank body (1) has a fixed frame (33) rotatably connected to its side wall. After the fixed frame (33) rotates, it can fit the part of the crossbeam (32) away from the connecting frame (31) into it. The end of the fixed bracket (33) away from its own rotation axis is threaded with a fixing bolt (331), which is used to abut against the crossbeam (32).

6. The orthopedic model vacuum forming device of claim 5, wherein: The portion of the crossbeam (32) opposite the fixing bolt (331) has a recessed groove (321).

7. The orthopedic model vacuum forming device of claim 5, wherein: The cover (2) is fixedly provided with a positioning frame (22), and the crossbeam (32) passes through the positioning frame (22) and is rotatably connected to the positioning frame (22).

8. The orthopedic model vacuum forming device of claim 1, wherein: The cover (2) is connected to a pressure gauge (24) for monitoring the pressure inside the tank (1). The cover (2) is also equipped with a thermometer (25) for detecting the temperature inside the tank (1).

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