A secondary polishing, filling and tail sealing device

Abstract

The present application relates to the technical field of cosmetic packaging, and discloses a secondary polishing filling tail sealing device, which comprises a rack, a mold closing device and a forming die. The mold closing device comprises a first assembly seat, a second assembly seat and a driving assembly, and the driving assembly is in driving connection with the first assembly seat and the second assembly seat respectively. The forming die comprises a first die and a second die, the first die is fixedly connected with the first assembly seat, the second die is fixedly connected with the second assembly seat, and the first die and the second die are both provided with negative pressure channels. The rack is also provided with an avoiding channel. The accommodating grooves on the first die and the second die accommodate single secondary polishing pipes. When the secondary polishing pipes need to be sealed, the secondary polishing pipes enter the cavity between the first die and the second die through the avoiding channel. The driving assembly drives the first die and the second die to close the mold every time to seal the single secondary polishing pipe, so that the forming die is miniaturized, the mold structure is simplified, the installation, disassembly and transportation of the forming die are facilitated, and the disassembly and maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of cosmetic packaging technology, and in particular to a single-use filling and sealing device. Background Technology

[0002] Sealing machines are very common in the cosmetics manufacturing industry. Automatic tube sealing machines utilize heating technology to fuse the ends of plastic tubes together under high pressure, preventing problems caused by foreign matter adhering to the tube wall. The FS single-shot filling and sealing mechanism is used for molding various plastic tubes in a wide range of applications, including cosmetics, pharmaceuticals, daily necessities, and chemicals.

[0003] Existing FS (First-Stage Filling and Sealing) mechanisms primarily employ two methods for molding the first-stage filling tube: large plastic molds and ultrasonic die casting. When using large plastic molds, the relatively complex structure of the packaging material, the softness of the finished product, and the variety of molding styles result in complex mold structures due to the need for close-fitting molding. Furthermore, large plastic molds are influenced by numerous factors, requiring high airtightness; insufficient airtightness leads to unsatisfactory molding results. Additionally, the large size and weight of the molds increase installation, disassembly, and transportation costs. Post-construction maintenance is also costly due to the tendency for material to adhere to the mold, leading to high manual cleaning costs. In ultrasonic die casting, the frequency, power, and duration of the ultrasonic waves significantly affect the casting process. Inappropriate parameter settings can cause defects such as porosity in the casting, making process parameter control complex and requiring high equipment investment. Summary of the Invention

[0004] The purpose of this invention is to provide a single-shot filling and sealing device to solve the problems of complex molds, inconvenient disassembly, and high cost in the existing sealing mechanism during mold forming.

[0005] To achieve the above objectives, the present invention provides a single-shot filling and sealing device, comprising a frame, a mold closing device, and a forming mold. The mold closing device is fixedly connected to the frame and includes a first mounting base, a second mounting base, and a drive assembly. The drive assembly is fixedly connected to the frame and is drively connected to the first mounting base and the second mounting base, respectively.

[0006] The molding die includes a first die and a second die. The first die is fixedly connected to the first mounting base, and the second die is fixedly connected to the second mounting base. The driving component drives the first mounting base and the second mounting base to move closer or further away from each other so that the first die and the second die are closed or separated. The first die and the second die have opposing parting surfaces. The parting surfaces are provided with receiving grooves for accommodating single-unit secondary ejection tubes. When the first die and the second die are closed, the parting surfaces contact each other so that the receiving grooves form cavities. The first die and the second die are also provided with negative pressure channels communicating with the receiving grooves.

[0007] The frame is also provided with a clearance channel. The cavity between the first mold and the second mold is positioned opposite to the clearance channel. The clearance channel is perpendicular to the mold closing direction of the first mold and the second mold, so that the secondary ejector can enter the cavity when the first mold and the second mold separate.

[0008] Preferably, the first mold and the second mold further have a partition plate, which is disposed in the receiving groove and divides the receiving groove into a first chamber and a second chamber. The negative pressure channel is connected to the first chamber and the second chamber respectively. The first chamber has a notch for avoiding the secondary ejection tube. When the first mold and the second mold are closed, the partition plate on the first mold contacts the partition plate on the second mold plate.

[0009] Preferably, the partition includes a base segment and a protruding segment connected to the base segment. Along the mold closing direction of the first mold and the second mold, the size of the protruding segment is larger than the size of the base segment, and the protruding segment is flush with the parting surface.

[0010] Preferably, the negative pressure channel includes a diversion hole, a pressure equalization chamber, and a negative pressure hole. There are multiple diversion holes. Each of the first chambers and each of the second chambers are connected to the pressure equalization chamber through the diversion holes. The negative pressure hole is connected to the pressure equalization chamber and is used to connect an external negative pressure device.

[0011] Preferably, the parting surface of the first mold is provided with a positioning boss, and the parting surface of the second mold is provided with a positioning groove. The positioning boss and the positioning boss are arranged opposite to each other along the mold closing direction of the first mold and the second mold. When the first mold and the second mold are closed, the positioning boss is embedded in the positioning groove.

[0012] Preferably, the frame is further provided with a guide shaft, which extends along the mold closing direction of the first mold and the second mold, and the first mold and the second mold are guided and assembled on the guide shaft.

[0013] Preferably, the frame includes a fixed base and a lifting base. The lifting base is guided and assembled on the fixed base in a vertical direction. The mold closing device is fixedly connected to the lifting base. The clearance channel and the guide shaft are both located on the lifting base. The mold closing directions of the first mold and the second mold, the lifting direction of the lifting base, and the clearance channel are perpendicular to each other.

[0014] Preferably, the fixed base includes a base plate, a top plate, and a lifting shaft. The base plate and the top plate are arranged parallel to each other and spaced apart. The lifting shaft is connected between the base plate and the top plate. A positioning bolt is also connected to the top plate. The lifting base guide sleeve is fitted onto the lifting shaft. The positioning bolt is used to fix the lifting base.

[0015] Preferably, the lifting seat includes a guide block and a lifting frame. The guide block is guided and assembled on the lifting shaft. The lifting frame is fixedly connected to the guide block. The drive assembly is fixedly connected to the lifting frame. The clearance channel and the guide shaft are both located on the lifting frame. The positioning bolt is fixedly connected to the lifting frame.

[0016] Compared with the prior art, the beneficial effects of the single-shot filling and sealing device of this invention are as follows: the receiving grooves on the first and second molds of the forming mold are used to accommodate single-shot tubes. When it is necessary to seal the single-shot tube, the single-shot tube enters the cavity between the first and second molds through the clearance channel. When the driving component drives the first and second molds to close, the single-shot tube is sealed each time, which makes the forming mold miniaturized, simplifies the mold structure, facilitates the installation, disassembly and transportation of the forming mold, and allows the first and second molds to be easily removed from the first and second mounting bases when maintenance is required, reducing the disassembly and maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the single-shot filling and sealing device of the present invention;

[0018] Figure 2 yes Figure 1 A top view of the secondary filling and sealing device with the top plate omitted from the frame;

[0019] Figure 3 yes Figure 2 A three-dimensional structural diagram of the single-shot filling and sealing device;

[0020] Figure 4 This is a schematic diagram of the structure of the second mold of the secondary filling and sealing device of the present invention;

[0021] Figure 5 yes Figure 4 A partially enlarged schematic diagram of point A in the second mold;

[0022] Figure 6 yes Figure 4 A cross-sectional view of the second mold;

[0023] Figure 7 This is a schematic diagram of the structure of the first mold of the secondary filling and sealing device of the present invention;

[0024] Figure 8 yes Figure 7 A cross-sectional view of the first mold.

[0025] In the diagram, 1. Frame, 11. Clearance passage, 12. Guide shaft, 13. Fixed seat, 131. Base plate, 132. Top plate, 133. Lifting shaft, 134. Positioning bolt, 14. Lifting seat, 141. Guide block, 142. Lifting frame, 2. Mold closing device, 21. First assembly seat, 22. Second assembly seat, 23. Drive assembly, 231. Mold closing cylinder, 3. Molding mold, 31. First mold, 311. Positioning boss, 32. Second mold, 321. Positioning groove, 33. Parting surface, 34. Receiving groove, 341. First chamber, 342. Second chamber, 343. Notch, 35. Partition plate, 351. Base section, 352. Protruding section, 4. Negative pressure channel, 41. Diversion hole, 42. Pressure equalization chamber, 43. Negative pressure hole. Detailed Implementation

[0026] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0027] A preferred embodiment of the single-shot filling and sealing device of the present invention, such as... Figures 1 to 8 As shown, the secondary filling and sealing device includes a frame 1, a mold closing device 2, and a forming mold 3. The frame 1 is the supporting foundation of the secondary filling and sealing device. The mold closing device 2 is fixedly connected to the frame 1, and the frame 1 supports the mold closing device 2. The forming mold 3 is fixedly assembled on the mold closing device 2. The mold closing device 2 is used to drive the forming mold 3 to close and open. The forming mold 3 is used to seal and form the tail end of the secondary filling tube.

[0028] The mold closing device 2 includes a first mounting base 21, a second mounting base 22, and a drive assembly 23. The drive assembly 23 is fixedly connected to the frame 1 and is drivenly connected to the first mounting base 21 and the second mounting base 22 respectively. The drive assembly 23 is used to drive the first mounting base 21 and the second mounting base 22 to move closer and further apart, so as to drive the molding die 3 on the first mounting base 21 and the second mounting base 22 to close or separate. In this embodiment, the drive assembly 23 includes two mold closing cylinders 231. The two mold closing cylinders 231 are coaxial in the horizontal direction and spaced apart. The first mounting base 21 and the second mounting base 22 correspond one-to-one with the two mold closing cylinders 231 and are fixedly connected to the output shafts of the two mold closing cylinders 231.

[0029] The molding die 3 includes a first die 31 and a second die 32. The first die 31 is fixedly connected to the first mounting base 21, and the second die 32 is fixedly connected to the second mounting base 22. When the two die-closing cylinders 231 drive the first mounting base 21 and the second mounting base 22 to move closer to each other, the first die 31 and the second die 32 close together. When the two die-closing cylinders 231 drive the first mounting base 21 and the second mounting base 22 to move away from each other, the first die 31 and the second die 32 separate.

[0030] The first mold 31 is the male mold, and the second mold 32 is the female mold. The opposing surfaces of the first mold 31 and the second mold 32 are parting surfaces 33, so that the first mold 31 and the second mold 32 have opposing parting surfaces 33. The parting surface 33 is provided with a receiving groove 34 for accommodating a single-unit secondary-exploded tube. When the first mold 31 and the second mold 32 are closed, the parting surfaces 33 contact each other, and the receiving groove 34 combines to form a cavity, in which the single-unit secondary-exploded tube can be processed into the required shape. In this embodiment, both the first mold 31 and the second mold 32 are made of mold steel. The parting surface 33 of the first mold 31 has dimensions of 87*24.5*20mm, and the parting surface 33 of the second mold 32 has dimensions of 87*20.45*19.9mm. While meeting the requirements of the sealing operation of the single-unit secondary-exploded tube, the overall volume is small, and it can be fixed to the first mounting base 21 and the second mounting base 22 with screws, making disassembly and assembly convenient.

[0031] Both the first mold 31 and the second mold 32 are equipped with negative pressure channels 4, which are connected to the receiving groove 34. The negative pressure channels 4 are also used to connect to external negative pressure equipment. The negative pressure equipment draws air through the negative pressure channels 4, creating negative pressure within the receiving groove 34. After the first mold 31 and the second mold 32 are closed, the cavity becomes a closed structure. The single-stage tube is formed under the action of negative pressure, completing the sealing operation. Compared to existing molding methods, negative pressure molding has the advantages of uniform structural stress and better overall aesthetics.

[0032] The frame 1 is also provided with a clearance channel 11. The cavity between the first mold 31 and the second mold 32 is located in the clearance channel 11, which is perpendicular to the mold closing direction of the first mold 31 and the second mold 32. The clearance channel 11 is used to avoid the single-unit secondary ejection tube. When it is necessary to seal the single-unit secondary ejection tube, the secondary ejection tube enters the gap between the first mold 31 and the second mold 32 through the clearance channel 11. When the first mold 31 and the second mold 32 are closed, the secondary ejection tube is located at the position of the cavity, so that when the first mold 31 and the second mold 32 are closed, the secondary ejection tube is covered in the cavity formed by the receiving groove 34 to perform the sealing operation on the secondary ejection tube.

[0033] The receiving grooves 34 on the first mold 31 and the second mold 32 of the forming mold 3 of the secondary throwing filling and sealing device are used to accommodate single secondary throwing tubes. When it is necessary to seal the secondary throwing tube, the secondary throwing tube enters the cavity between the first mold 31 and the second mold 32 through the clearance channel 11. When the driving component 23 drives the first mold 31 and the second mold 32 to close the mold, the single secondary throwing tube is sealed each time, which makes the forming mold 3 miniaturized, simplifies the mold structure, and facilitates the installation, disassembly and transportation of the forming mold 3. When maintenance is required, the first mold 31 and the second mold 32 can be easily removed from the first mounting base 21 and the second mounting base 22, reducing the disassembly and maintenance costs.

[0034] Preferably, the first mold 31 and the second mold 32 also have a partition 35, which is disposed in the receiving groove 34 and divides the receiving groove 34 into a first chamber 341 and a second chamber 342. The negative pressure channel 4 is connected to the first chamber 341 and the second chamber 342 respectively. The first chamber 341 has a notch 343 for avoiding the secondary throwing tube. When the first mold 31 and the second mold 32 are closed, the partition 35 on the first mold 31 contacts the partition 35 on the second mold.

[0035] The partition 35 on the first mold 31 and the second mold 32 divides the receiving groove 34 into a first chamber 341 and a second chamber 342. In the cavity formed when the first mold 31 and the second mold 32 are closed, the partition 35 on the first mold 31 contacts the partition 35 on the second mold plate, so that the first chamber 341 and the second chamber 342 are separated by the partition 35 and are relatively independent. The part of the single-stage secondary ejection tube located in the first chamber 341 and the part located in the second chamber 342 are disconnected from each other. The liquid in the secondary ejection tube is connected to the first chamber 341 and disconnected from the second chamber 342, which can increase airtightness and easy disassembly.

[0036] Preferably, the partition 35 includes a base section 351 and a protruding section 352 connected to the base section 351. Along the mold closing direction of the first mold 31 and the second mold 32, the size of the protruding section 352 is larger than the size of the base section 351, and the protruding section 352 is flush with the parting surface 33.

[0037] The size of the protruding section 352 of the partition 35 is larger than the size of the base section 351. The contact of the partition 35 refers to the contact between the protruding sections 352. The secondary tube is separated at the contacting part of the protruding sections 352 to form a through hole structure, which makes it easy to open the secondary tube during use and also increases the overall aesthetics of the secondary tube. In addition, the difference between the size of the protruding section 352 and the size of the base section 351 is the thickness of the secondary tube at the end.

[0038] Preferably, the negative pressure channel 4 includes a diversion hole 41, a pressure equalization chamber 42, and a negative pressure hole 43. There are multiple diversion holes 41. Each first chamber 341 and each second chamber 342 are connected to the pressure equalization chamber 42 through the diversion hole 41. The negative pressure hole 43 is connected to the pressure equalization chamber 42 and is used to connect an external negative pressure device.

[0039] The negative pressure channel 4 is formed by a diversion hole 41, a pressure equalization chamber 42, and a negative pressure hole 43. The negative pressure hole 43 is used to connect to a negative pressure device, which can sequentially extract gas from the receiving tank 34 through the negative pressure hole 43, the pressure equalization chamber 42, and the diversion hole 41. During the gas extraction process, the pressure equalization chamber 42 collects and merges the gas, ensuring pressure balance in each diversion hole 41, thereby ensuring the consistency and aesthetics of the formation of each secondary ejection tube in the entire single-unit secondary ejection tube.

[0040] Preferably, the parting surface 33 of the first mold 31 is provided with a positioning boss 311, and the parting surface 33 of the second mold 32 is provided with a positioning groove 321. The positioning boss 311 and the positioning boss 311 are arranged opposite to each other along the mold closing direction of the first mold 31 and the second mold 32. When the first mold 31 and the second mold 32 are closed, the positioning boss 311 is embedded in the positioning groove 321.

[0041] When the first mold 31 and the second mold 32 are closed, the positioning boss 311 is embedded in the positioning groove 321. The positioning boss 311 and the positioning groove 321 can ensure that the first mold 31 and the second mold 32 are in the same position each time they are closed, so that there is no gap on the parting surface 33, which increases the sealing of the cavity and also ensures the aesthetic appearance of the structure after negative pressure molding.

[0042] Preferably, the frame 1 is further provided with a guide shaft 12, which extends along the mold closing direction of the first mold 31 and the second mold 32, and the first mold 31 and the second mold 32 are guided and assembled on the guide shaft 12.

[0043] The guide shaft 12 on the frame 1 guides the first mold 31 and the second mold 32, ensuring that the first mold 31 and the second mold 32 close in the set direction, thereby ensuring that there is no gap at the parting surface 33 when the first mold 31 and the second mold 32 close.

[0044] Preferably, the frame 1 includes a fixed base 13 and a lifting base 14. The lifting base 14 is guided and assembled on the fixed base 13 in a vertical direction. The mold closing device 2 is fixedly connected to the lifting base 14. The clearance channel 11 and the guide shaft 12 are both provided on the lifting base 14. The mold closing direction of the first mold 31 and the second mold 32, the lifting direction of the lifting base 14, and the clearance channel 11 are perpendicular to each other.

[0045] The lifting seat 14 is guided and mounted on the fixed seat 13, while the mold closing device 2 is arranged on the lifting seat 14. When the lifting seat 14 rises and falls on the fixed seat 13, it can drive the mold closing device 2 to rise and fall synchronously. That is, the lifting seat 14, the mold closing device, the first mold 31 and the second mold 32 can rise and fall synchronously, adjusting the height of the first mold 31 and the second mold 32 to adapt to different single-unit secondary tube sealing operations. The mold closing direction of the first mold 31 and the second mold 32, the rising and falling direction of the lifting seat 14, and the clearance channel 11 are all perpendicular to each other, so that the three operations of the first mold 31 and the second mold 32 closing, adapting to different working conditions sealing operations, and the secondary tube entering the cavity do not affect each other.

[0046] Preferably, the fixed base 13 includes a base plate 131, a top plate 132 and a lifting shaft 133. The base plate 131 and the top plate 132 are arranged parallel to each other and spaced apart. The lifting shaft 133 is connected between the base plate 131 and the top plate 132. The top plate 132 is also connected with a positioning bolt 134. The lifting seat 14 is guided and fitted onto the lifting shaft 133. The positioning bolt 134 is used to fix the lifting seat 14.

[0047] The fixed seat 13, formed by the base plate 131, top plate 132, and lifting shaft 133, has an overall frame structure, ensuring strength while reducing the weight of the fixed seat 13. The lifting shaft 133 guides the lifting seat 14, limiting the lifting direction of the lifting seat 14 and increasing the stability of the lifting seat 14 during lifting. A positioning bolt 134 is provided on the top plate 132. By rotating the positioning bolt 134, under the action of the threaded structure, the positioning bolt 134 can drive the lifting seat 14 to rise and fall along the lifting shaft 133, and the positioning bolt 134 serves to adjust the height of the lifting seat 14.

[0048] Preferably, the lifting seat 14 includes a guide block 141 and a lifting frame 142. The guide block 141 is guided and assembled on the lifting shaft 133. The lifting frame 142 is fixedly connected to the guide block 141. The drive assembly 23 is fixedly connected to the lifting frame 142. The clearance channel 11 and the guide shaft 12 are both provided on the lifting frame 142. The positioning bolt 134 is fixedly connected to the lifting frame 142.

[0049] The guide block 141 of the lifting seat 14 is guided and engaged with the lifting shaft 133 to increase the stability of the lifting seat 14 during lifting. The lifting frame 142 can reduce the total weight of the lifting seat 14 and also provide an assembly station for the drive assembly 23.

[0050] The working process of this invention is as follows: During the sealing operation, the single-unit secondary ejector tube enters the space between the first mold 31 and the second mold 32 along the horizontal direction through the avoidance channel 11. The two mold closing cylinders 231 work, driving the first assembly seat 21 and the second assembly seat 22 to move closer to each other. The first mold 31 and the second mold 32 close the mold, covering the heated packaging material in the cavity and extruding the packaging material. At the same time, the negative pressure device draws air through the negative pressure channel 4, generating negative pressure in the cavity, and the packaging material adheres to the inner wall of the receiving groove 34. After the packaging material is formed, the mold closing cylinder 231 drives the first assembly seat 21 and the second assembly seat 22 to move away from each other, the first mold 31 and the second mold 32 separate, the single-unit secondary ejector tube is sealed, and the next set of single-unit secondary ejector tubes is replaced for mold closing and sealing.

[0051] In summary, the embodiments of the present invention provide a single-shot filling and sealing device. The receiving grooves on the first and second molds of the forming mold are used to accommodate single-shot tubes. When it is necessary to seal the single-shot tube, the single-shot tube enters the cavity between the first and second molds through the clearance channel. When the driving component drives the first and second molds to close, the single-shot tube is sealed each time. This makes the forming mold miniaturized, simplifies the mold structure, and facilitates the installation, disassembly and transportation of the forming mold. When maintenance is required, the first and second molds can be easily removed from the first and second mounting bases, reducing the disassembly and maintenance costs.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A single-shot filling and sealing device, characterized in that, It includes a frame (1), a mold clamping device (2) and a molding die (3). The mold clamping device (2) is fixedly connected to the frame (1). The mold clamping device (2) includes a first mounting base (21), a second mounting base (22) and a drive assembly (23). The drive assembly (23) is fixedly connected to the frame (1) and is driven by the first mounting base (21) and the second mounting base (22) respectively. The molding die (3) includes a first die (31) and a second die (32). The first die (31) is fixedly connected to the first assembly base (21), and the second die (32) is fixedly connected to the second assembly base (22). The driving component (23) drives the first assembly base (21) and the second assembly base (22) to move closer or further away from each other so that the first die (31) and the second die (32) can be closed or separated. The first die (31) and the second die (32) have parting surfaces (33) arranged opposite to each other. The parting surface (33) is provided with a receiving groove (34) for accommodating a single-unit secondary ejection tube. When the first die (31) and the second die (32) are closed, the parting surface (33) contacts each other so that the receiving groove (34) forms a cavity. The first die (31) and the second die (32) are also provided with a negative pressure channel (4) communicating with the receiving groove (34). The frame (1) is also provided with a clearance channel (11), and the cavity position between the first mold (31) and the second mold (32) is opposite to the clearance channel (11). The clearance channel (11) is perpendicular to the mold closing direction of the first mold (31) and the second mold (32) so that the secondary ejector tube can enter the cavity when the first mold (31) and the second mold (32) are separated. The first mold (31) and the second mold (32) also have a partition (35), which is disposed in the receiving groove (34). The partition (35) divides the receiving groove (34) into a first chamber (341) and a second chamber (342). The negative pressure channel (4) is connected to the first chamber (341) and the second chamber (342) respectively. The first chamber (341) has a notch (343) for avoiding the secondary throwing tube. When the first mold (31) and the second mold (32) are closed, the partition (35) on the first mold (31) contacts the partition (35) on the second mold (32).

2. The secondary filling and sealing device according to claim 1, characterized in that, The partition (35) includes a base section (351) and a protruding section (352) connected to the base section (351). Along the mold closing direction of the first mold (31) and the second mold (32), the size of the protruding section (352) is larger than the size of the base section (351), and the protruding section (352) is flush with the parting surface (33).

3. The secondary filling and sealing device according to claim 1, characterized in that, The negative pressure channel (4) includes a diversion hole (41), a pressure equalization chamber (42), and a negative pressure hole (43). There are multiple diversion holes (41). Each of the first chambers (341) and each of the second chambers (342) are connected to the pressure equalization chamber (42) through the diversion hole (41). The negative pressure hole (43) is connected to the pressure equalization chamber (42). The negative pressure hole (43) is used to connect to an external negative pressure device.

4. The single-shot filling and sealing device according to any one of claims 1-3, characterized in that, The first mold (31) has a positioning boss (311) on its parting surface (33), and the second mold (32) has a positioning groove (321) on its parting surface (33). The positioning boss (311) and the positioning groove (321) are arranged opposite to each other along the mold closing direction of the first mold (31) and the second mold (32). When the first mold (31) and the second mold (32) are closed, the positioning boss (311) is embedded in the positioning groove (321).

5. The single-shot filling and sealing device according to any one of claims 1-3, characterized in that, The frame (1) is also provided with a guide shaft (12), which extends along the mold closing direction of the first mold (31) and the second mold (32), and the first mold (31) and the second mold (32) are guided and assembled on the guide shaft (12).

6. The secondary filling and sealing device according to claim 5, characterized in that, The frame (1) includes a fixed seat (13) and a lifting seat (14). The lifting seat (14) is guided and assembled on the fixed seat (13) in a vertical direction. The mold closing device (2) is fixedly connected to the lifting seat (14). The clearance channel (11) and the guide shaft (12) are both located on the lifting seat (14). The mold closing direction of the first mold (31) and the second mold (32), the lifting direction of the lifting seat (14), and the clearance channel (11) are perpendicular to each other.

7. The secondary filling and sealing device according to claim 6, characterized in that, The fixed base (13) includes a base plate (131), a top plate (132), and a lifting shaft (133). The base plate (131) and the top plate (132) are arranged parallel to each other and spaced apart. The lifting shaft (133) is connected between the base plate (131) and the top plate (132). A positioning bolt (134) is also connected to the top plate (132). The lifting seat (14) is guided and fitted onto the lifting shaft (133). The positioning bolt (134) is used to fix and connect with the lifting seat (14).

8. The secondary filling and sealing device according to claim 7, characterized in that, The lifting seat (14) includes a guide block (141) and a lifting frame (142). The guide block (141) is guided and assembled on the lifting shaft (133). The lifting frame (142) is fixedly connected to the guide block (141). The drive assembly (23) is fixedly connected to the lifting frame (142). The clearance channel (11) and the guide shaft (12) are both located on the lifting frame (142). The positioning bolt (134) is fixedly connected to the lifting frame (142).

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