Vacuum sealing structure of pre-filling and sealing filling machine

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a vacuum sealing structure of a pre-filling and sealing filling machine. When the pre-filling and sealing device is used, the synchronous belt driving mechanism drives the lower mounting seat to move, so that the sucking disc sucks the pre-filling and sealing needle, meanwhile, the synchronous belt driving mechanism drives the upper mounting seat to move synchronously, the first sealing sleeve is pressed downwards towards the interior of the second sealing sleeve, and then the end part of a needle body is placed in the pre-filling and sealing needle to start filling; the synchronous belt driving mechanism drives the upper mounting base to move upwards, so that filling is completed, in the whole process, only a small section of displacement at the joint of the first sealing sleeve and the second sealing sleeve is used for guiding, friction cannot be generated between the sealing ring and the needle body, and therefore the situation that materials are polluted by particulate matter generated by friction of the sealing ring is avoided; and meanwhile, the equipment maintenance frequency can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a vacuum sealing structure of a pre-filling filling machine. Background Art

[0002] At present, on prefilled filling machines, the filling of high-viscosity materials requires vacuum extraction of the prefilling needle. The main solution is to use a sealing ring to seal in the radial direction of the filling needle.

[0003] However, there are some problems with this method. First, due to the relative motion between the filling needle and the sealing ring, the needle and the sealing ring will rub against each other. This friction will cause the sealing ring to produce particles during the friction process, and these particles may contaminate the material. Secondly, due to the characteristics of high-viscosity materials, the friction of the sealing ring will cause it to gradually wear during use, thereby reducing the sealing effect, increasing the frequency of equipment maintenance and component replacement, and increasing production costs and downtime.

[0004] In summary, there is an urgent need for a vacuum sealing structure for a pre-filled filling machine, which can reduce the generation of particulate matter while ensuring the vacuum effect, avoid contamination of materials as much as possible, and reduce the frequency of equipment maintenance. Utility Model Content

[0005] The purpose of the invention of the utility model is to provide a vacuum sealing structure for a pre-filled filling machine in view of the problems existing in the prior art, which can reduce the generation of particulate matter, avoid polluting materials as much as possible, and reduce the frequency of equipment maintenance while ensuring the vacuum effect.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A vacuum sealing structure of a prefilled filling machine, comprising an upper mounting seat and a lower mounting seat, wherein the upper mounting seat and the lower mounting seat are respectively connected to a synchronous belt driving mechanism, the upper mounting seat is provided with a first mounting hole, the lower mounting seat is provided with a second mounting hole, a filling needle is provided through the first mounting hole and the second mounting hole, and a suction cup is also provided on the second mounting hole;

[0008] A sealing sleeve is provided between the first mounting hole and the second mounting hole, the sealing sleeve is arranged outside the filling needle, a first sealing ring is provided at one end of the sealing sleeve close to the first mounting hole, and a second sealing ring is provided at one end of the sealing sleeve close to the second mounting hole, the first sealing ring and the second sealing ring seal the sealing sleeve;

[0009] A positioning sleeve is also provided at one end of the sealing sleeve close to the second mounting hole, and the positioning sleeve is used to position the filling needle.

[0010] Preferably, a vacuum pipeline is further provided on the side of the lower mounting seat, and the vacuum pipeline is used to evacuate the inside of the sealing sleeve.

[0011] Preferably, the sealing sleeve comprises a first sealing sleeve and a second sealing sleeve, the outer diameter of the first sealing sleeve is matched with the inner diameter of the second sealing sleeve, and the first sealing sleeve is arranged inside the second sealing sleeve and moves relative to the second sealing sleeve.

[0012] Preferably, the filling needle comprises a needle head and a needle body, and the needle head comprises a fixing head and a sealing head. During installation, the fixing head is arranged outside the first mounting hole, and the sealing head is arranged inside the first mounting hole, and the sealing head is matched with the inner diameter clearance of the first sealing sleeve.

[0013] Preferably, a sealing groove is provided on the sealing head, and the first sealing ring is provided on the sealing groove.

[0014] Preferably, the second sealing ring is arranged at the end of the second sealing sleeve to seal the second sealing sleeve.

[0015] Preferably, the positioning sleeve is arranged at an end of the second sealing ring away from the second sealing sleeve, and the positioning sleeve is used to position the needle.

[0016] Preferably, a needle pressure plate is also provided on the upper mounting seat, and the needle pressure plate is used to fix the filling needle.

[0017] Preferably, a pressing plate is provided on the lower mounting seat, and the pressing plate is used to fix the second sealing sleeve.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] The present application provides an upper mounting seat and a lower mounting seat, and the upper mounting seat and the lower mounting seat are correspondingly provided with a first mounting hole and a second mounting hole, the first mounting hole is used to install the first sealing sleeve, the second mounting hole is used to install the second sealing sleeve, and the first sealing sleeve is arranged inside the second sealing sleeve; a first sealing ring is arranged at the end of the first sealing sleeve, a second sealing ring is arranged at the end of the second sealing sleeve, and a positioning sleeve is also arranged at one end of the second sealing ring; during installation, the filling needle is inserted from the first mounting hole, and the needle body part passes through the first sealing sleeve and the second sealing sleeve in sequence until it passes through the positioning sleeve, so as to position the filling needle, wherein the first sealing ring and the second sealing ring seal the inside of the sealing sleeve;

[0020] When the present application is in use, the synchronous belt drive mechanism drives the lower mounting seat to move, so that the suction cup sucks the prefilled needle. At the same time, the synchronous belt drive mechanism drives the upper mounting seat to move synchronously, pressing the first sealing sleeve downward into the second sealing sleeve, and then placing the end of the needle body in the prefilled needle to start filling. During the filling process, the synchronous belt drive mechanism drives the upper mounting seat to move upward to complete the filling. During the whole process, there is only a small displacement of the first sealing sleeve and the second sealing sleeve at the junction for guidance, and no friction is generated between the sealing ring and the needle body, thereby avoiding the generation of particulate matter contamination of the material due to friction of the sealing ring, and at the same time can reduce the frequency of equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the sealing sleeve of the utility model.

[0024] Markings in the figure: 1-upper mounting seat, 11-first mounting hole, 2-lower mounting seat, 21-second mounting hole, 3-filling needle, 31-needle head, 311-fixing head, 312-sealing head, 312a-sealing groove, 32-needle body, 4-suction cup, 5-sealing sleeve, 51-first sealing sleeve, 52-second sealing sleeve, 61-first sealing ring, 62-second sealing ring, 7-positioning sleeve, 8-vacuum pipeline, 9-needle pressure plate, 10-pressure plate. DETAILED DESCRIPTION

[0025] The utility model is described in detail below in conjunction with the accompanying drawings.

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] Example 1

[0028] A vacuum sealing structure of a pre-filled filling machine comprises an upper mounting seat 1 and a lower mounting seat 2, wherein the upper mounting seat 1 and the lower mounting seat 2 are respectively connected to a synchronous belt driving mechanism, the upper mounting seat 1 is provided with a first mounting hole 11, the lower mounting seat 2 is provided with a second mounting hole 21, a filling needle 3 is arranged through the first mounting hole 11 and the second mounting hole 21, and a suction cup 4 is also provided on the second mounting hole 21; a sealing sleeve 5 is provided between the first mounting hole 11 and the second mounting hole 21, the sealing sleeve 5 is sleeved on the outside of the filling needle 3, a first sealing ring 61 is provided at one end of the sealing sleeve 5 close to the first mounting hole 11, and a second sealing ring 62 is provided at one end of the sealing sleeve 5 close to the second mounting hole 21, and the first sealing ring 61 and the second sealing ring 62 seal the sealing sleeve 5; a positioning sleeve 7 is also provided at one end of the sealing sleeve 5 close to the second mounting hole 21, and the positioning sleeve 7 is used to position the filling needle 3. A vacuum pipeline 8 is also provided on the side of the lower mounting seat 2, and the vacuum pipeline 8 is used to evacuate the inside of the sealing sleeve 5. The sealing sleeve 5 includes a first sealing sleeve 51 and a second sealing sleeve 52 . The outer diameter of the first sealing sleeve 51 matches the inner diameter of the second sealing sleeve 52 . The first sealing sleeve 51 is sleeved inside the second sealing sleeve 52 and moves relative to the second sealing sleeve 52 .

[0029] Wherein, a cylindrical groove is provided on the lower mounting seat 2, which is adapted to the outer diameter of the second sealing sleeve 52, and has a clearance fit, wherein the clearance is a tight fit, such as the clearance can be set to 0.02mm-0.05mm, which is convenient for subsequent replacement and cleaning. Furthermore, a groove adapted to the positioning sleeve 7 is also provided at the bottom of the cylindrical groove. During installation of the present application, the positioning sleeve 7 is first placed in the groove at the bottom of the lower mounting seat 2, the second sealing ring 62 is placed, and then the second sealing sleeve 52 is placed in the cylindrical groove, wherein the suction cup 4 is provided at the lower end of the lower mounting seat 2, and is connected to the second sealing sleeve 52 through the opening of the positioning sleeve 7; the first sealing sleeve 51 is provided in the first mounting hole 11, and has a clearance fit with the first mounting hole 11 (wherein the clearance is a tight fit, such as the clearance can be set to 0.02mm-0.05mm, which is convenient for subsequent replacement and cleaning), and then the first sealing ring 61 is installed in the In the sealing groove 321a on the filling needle 3, two first sealing rings 61 are provided to further seal, and then the filling needle 3 is inserted from the first mounting hole 11, wherein the needle head 31 of the filling needle 3 is in gap with the first sealing sleeve 51, and the filling needle 3 passes through the first sealing sleeve 51 and the second sealing sleeve 52 in sequence until it passes through the positioning sleeve 7, and the needle body 32 extends out of the positioning sleeve 7, so as to realize the installation and positioning of the filling needle 3; after installation, the first sealing sleeve 51 is placed in the second sealing sleeve 52, only a part of it is placed, and sealing is realized by controlling the gap between the inner and outer holes. Among them, the first mounting seat 1 and the second mounting seat 2 are respectively connected to a synchronous belt drive mechanism to control the movement of the first mounting seat 1 and the second mounting seat 2. The synchronous belt drive mechanism can select a servo motor, a belt, etc. to work. The drive of the servo motor, etc. is an existing conventional technology, so it will not be repeated here.

[0030] When the present application is in use, the synchronous belt drive mechanism controls the lower mounting seat 2 to start moving downward until the suction cup 4 sucks the prefilled needle bottle mouth, the vacuum pipeline 8 is connected to the vacuum pump to evacuate the entire sealing system, and the synchronous belt drive mechanism drives the upper mounting seat 1 to move downward, and the first sealing sleeve 51 and the filling needle 3 both move downward until they are inserted into the prefilled needle, and then a syringe pump is used to start filling from the top of the filling needle 3. During the filling process, the synchronous belt drive mechanism drives the upper mounting seat 1 to make a return upward movement, that is, filling while returning to its original position. When the upper mounting seat 1 returns to its original position, the lower mounting seat 2 also returns to its original position to realize the filling of the material.

[0031] During the whole process, the filling needle 3 does not contact the sealing ring. Even if high-viscosity materials are filled, no particulate matter will be generated due to repeated friction. At the same time, there is only a small section of structure between the first sealing sleeve 51 and the second sealing sleeve 52 for guiding, which optimizes the situation that the entire axial length is a guiding structure. Therefore, under the premise of ensuring the guiding performance, the friction between the sealing sleeves is further reduced, which can not only reduce the pollution of particulate matter, but also reduce the frequency of equipment maintenance.

[0032] Specifically, the filling needle 3 includes a needle head 31 and a needle body 32. The needle head 31 includes a fixed head 311 and a sealing head 312. During installation, the fixed head 311 is arranged outside the first mounting hole 11, and the sealing head 312 is arranged inside the first mounting hole 11. The sealing head 312 is matched with the inner diameter clearance of the first sealing sleeve 51. The material is injected into the pre-filled needle from the end of the fixed head 311 of the filling needle 3. The clearance between the sealing head 312 and the first sealing sleeve 51 can generally be set to 0.02mm-0.05mm, which is convenient for subsequent replacement, wherein the first sealing ring 61 is used for sealing.

[0033] Specifically, the sealing head 312 is provided with a sealing groove 312a, and the first sealing ring 61 is arranged on the sealing groove 312a. The sealing head 312 is radially provided with a sealing groove 312a, and the first sealing ring 61 is installed on the sealing groove 312a to seal the pipeline.

[0034] Specifically, the second sealing ring 62 is arranged in the gap between the second sealing sleeve 52 and the lower mounting seat 2, and is used to seal the second sealing sleeve 52 and the lower mounting seat 2. The lower mounting seat 2 is also provided with a groove, and the groove is adapted to the positioning sleeve 7. The positioning sleeve 7 is arranged at one end of the second sealing ring 62 away from the second sealing sleeve 52, and the positioning sleeve 7 is used to position the needle 31. The lower mounting seat 2 is provided with a cylindrical groove, which is just adapted to the outer diameter of the second sealing ring 62, and the positioning sleeve 7 is embedded in the bottom of the cylindrical groove. A through hole is provided in the middle of the positioning sleeve 7, which is used to penetrate the needle body 31, and the through hole connects the lower mounting seat 2.

[0035] Specifically, the upper mounting seat 1 is further provided with a needle pressure plate 9, which is used to fix the filling needle 3. The needle pressure plate 9 is arranged on the upper mounting seat 1 and fixed by a set screw, and is used to clamp and fix the filling needle 3, so that it can move synchronously with the upper mounting seat 1.

[0036] Specifically, a pressing plate 10 is provided on the lower mounting seat 2, and the pressing plate 10 is used to fix the second sealing sleeve 52. The pressing plate 10 is arranged on the lower mounting seat 2 by fastening screws, fixes the second sealing sleeve 52, and can move synchronously with the lower mounting seat 2.

[0037] Specifically, the positions of the first mounting hole 11 and the second mounting hole 21 correspond to each other, and multiple mounting holes can be provided. Multiple mounting holes can be provided, and multiple matching sealing sleeves can also be provided, so that two or more prefilled needles can be filled at the same time. Preferably, Figure 1 As shown, two are set.

[0038] Furthermore, the first sealing sleeve 51 and the second sealing sleeve 52 can be made of ceramic structural material, which has stability, high hardness, and can resist pressure and wear. During the vacuum filling process, the use of high-hardness ceramic materials can ensure its stable sealing performance and reduce wear. At the same time, the thermal expansion coefficient of ceramic materials is usually relatively low, and has good dimensional stability. During the vacuum filling process, the size of the sealing sleeve may change due to temperature changes. The use of ceramic materials with good dimensional stability can reduce the impact of such changes on the sealing performance.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum sealing structure of a prefilled filling machine, comprising an upper mounting seat (1) and a lower mounting seat (2), wherein the upper mounting seat (1) and the lower mounting seat (2) are respectively connected to a synchronous belt driving mechanism, characterized in that: The upper mounting seat (1) is provided with a first mounting hole (11), the lower mounting seat (2) is provided with a second mounting hole (21), the filling needle (3) is arranged through the first mounting hole (11) and the second mounting hole (21), and the second mounting hole (21) is also provided with a suction cup (4); A sealing sleeve (5) is provided between the first mounting hole (11) and the second mounting hole (21); the sealing sleeve (5) is sleeved on the outside of the filling needle (3); a first sealing ring (61) is provided at one end of the sealing sleeve (5) close to the first mounting hole (11); a second sealing ring (62) is provided at one end of the sealing sleeve (5) close to the second mounting hole (21); the first sealing ring (61) and the second sealing ring (62) seal the sealing sleeve (5); A positioning sleeve (7) is also provided at one end of the sealing sleeve (5) close to the second mounting hole (21), and the positioning sleeve (7) is used to position the filling needle (3).

2. A vacuum sealing structure for a prefilled filling machine according to claim 1, characterized in that: A vacuum pipeline (8) is also provided on the side of the lower mounting seat (2), and the vacuum pipeline (8) is used to evacuate the inside of the sealing sleeve (5).

3. A vacuum sealing structure for a prefilled filling machine according to claim 2, characterized in that: The sealing sleeve (5) comprises a first sealing sleeve (51) and a second sealing sleeve (52); the outer diameter of the first sealing sleeve (51) is matched with the inner diameter of the second sealing sleeve (52); the first sealing sleeve (51) is sleeved inside the second sealing sleeve (52) and moves relative to the second sealing sleeve (52).

4. A vacuum sealing structure for a prefilled filling machine according to claim 3, characterized in that: The filling needle (3) comprises a needle head (31) and a needle body (32); the needle head (31) comprises a fixing head (311) and a sealing head (312); during installation, the fixing head (311) is arranged outside the first installation hole (11), and the sealing head (312) is arranged inside the first installation hole (11); the sealing head (312) is clearance-matched with the inner diameter of the first sealing sleeve (51).

5. A vacuum sealing structure for a prefilled filling machine according to claim 4, characterized in that: The sealing head (312) is provided with a sealing groove (312a), and the first sealing ring (61) is provided on the sealing groove (312a).

6. A vacuum sealing structure for a prefilled filling machine according to claim 5, characterized in that: The second sealing ring (62) is arranged in the gap between the second sealing sleeve (52) and the lower mounting seat (2) and is used to seal the second sealing sleeve (52) and the lower mounting seat (2).

7. A vacuum sealing structure for a prefilled filling machine according to claim 6, characterized in that: The lower mounting seat (2) is also provided with a groove, the groove being adapted to the positioning sleeve (7), the positioning sleeve (7) being arranged at an end of the second sealing ring (62) away from the second sealing sleeve (52), and the positioning sleeve (7) being used to position the needle (31).

8. A vacuum sealing structure for a prefilled filling machine according to claim 7, characterized in that: The upper mounting seat (1) is also provided with a needle pressure plate (9), and the needle pressure plate (9) is used to fix the filling needle (3).

9. A vacuum sealing structure for a prefilled filling machine according to claim 8, characterized in that: A pressing plate (10) is provided on the lower mounting seat (2), and the pressing plate (10) is used to fix the second sealing sleeve (52).

10. A vacuum sealing structure for a prefilled filling machine according to claim 9, characterized in that: The positions of the first mounting hole (11) and the second mounting hole (21) correspond to each other, and a plurality of them can be provided.

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