Conical suspension dry type filling machine

Abstract

The utility model discloses a cone suspension dry-type filling machine, which belongs to the technical field of filling equipment and comprises a filling tool, the filling tool comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die shell, the lower die assembly comprises a lower die plate, the upper die shell moves up and down along the vertical direction and can be matched with the lower die plate, and the lower die shell moves up and down along the vertical direction and can be matched with the lower die plate. A sealing structure is arranged between the lower die plate and the upper die shell, and a product containing groove is formed in the lower die plate. According to the scheme, vacuum filling is carried out on an external product by adopting the mold closing and opening processes of the upper mold assembly and the lower mold assembly; when the filling tool is in a mold opening state, an external product is placed in the product containing groove, then the upper mold shell and the lower mold plate are subjected to mold closing, vacuumizing operation is conducted to form a vacuum environment, finally, after filling operation is completed, the product is taken out, and filling operation of the next product is conducted. According to the scheme, the filling work of an external product in a vacuum environment is achieved, and the filling efficiency is high.

Description

Technical Field

[0001] The utility model relates to a filling machine, and more specifically, to a conical suspension dry filling machine. Background Art

[0002] When a filling machine for liquid works, it is necessary to extract the air in the product cavity such as a suspension shock absorber, so that the vacuum degree reaches a certain requirement, and then inject a specified liquid, such as ethylene glycol, into the product cavity, seal the cavity opening, and ensure that there are no bubbles in the product cavity after filling.

[0003] For example: Chinese Patent Publication No. CN207561299U, Publication Date: July 3, 2018, the name of the utility model is a vacuum filling machine. This application discloses a filling machine, including a filling housing, a top cover, a first hydraulic cylinder, a filling body, and a vacuum pump. The top cover is installed inside the upper end of the filling housing, the middle part of the upper end of the top cover is installed with a first hydraulic cylinder, the lower output end of the first hydraulic cylinder is drivingly connected with a telescopic rod, one end of the first telescopic rod is installed with a squeezing head, and the lower end of the discharge hopper is installed with a first discharge port. This application is mainly used for the filling of minced meat extrusion, which belongs to the filling of internal products and does not require repeated mold opening and closing operations; it is not suitable for the vacuum filling of external products, and it is necessary to open and close the mold multiple times to put the unfilled products into the mold cavity. Summary of the Utility Model

[0004] The utility model overcomes the problem of difficult filling of external products in a filling machine, and provides a conical suspension dry filling machine. This solution can realize the filling process of external products in a filling machine and ensure the production of products in a vacuum environment.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a conical suspension dry filling machine, including a filling tooling, the filling tooling includes an upper mold assembly and a lower mold assembly, the upper mold assembly includes an upper mold shell, the lower mold assembly includes a lower template, the upper mold shell moves up and down in the vertical direction and can cooperate with the lower template, a sealing structure is arranged between the lower template and the upper mold shell, and a product accommodation groove is arranged on the lower template. This solution uses the mold closing and mold opening processes of the upper and lower mold assemblies to perform vacuum filling on external products; when the filling tooling is in the mold opening state, the external products are placed into the product accommodation groove of the lower template, and then the upper mold shell and the lower template are closed; a closed space is formed in the mold cavity formed by the upper mold shell and the lower template, and then a vacuum pumping operation is performed to form a vacuum environment. Finally, the products are taken out after the filling operation, and the filling operation of the next product is carried out. This solution realizes the filling work of external products in a vacuum environment and has a high filling efficiency.

[0006] Preferably, a liquid injection assembly is provided on the upper mold shell or the lower template. The liquid injection assembly includes a telescopic driving mechanism, and a liquid injection pipe is provided at the output end of the telescopic driving mechanism. The liquid injection assembly is mainly used to inject liquid into the products in the filling tooling. Since the products are located in the middle of the lower template, the liquid injection pipe needs to be extended above the cavities of the products through the telescopic driving mechanism to inject the liquid into the product cavities, avoiding the liquid from spilling into the upper mold shell and the lower template.

[0007] Preferably, an air extraction port is provided on the upper mold shell or the lower template, and the air extraction port is connected to an air extraction device. The air extraction device is used to perform a vacuum pumping operation on the closed mold cavity formed by the upper mold shell and the lower template to form a vacuum environment.

[0008] Preferably, a liquid filling device is further included. A water pump and a first valve assembly are provided in the liquid filling device, and the water pump is connected to the liquid injection assembly through the first valve assembly. The water pump provides power for liquid injection, and the first valve assembly controls the on-off of liquid injection.

[0009] Preferably, the air extraction device is provided in the liquid filling device, and a vacuum pump and a second valve assembly are provided in the air extraction device. The air extraction device and the liquid filling device are integrated into one, reducing the volume of the entire filling equipment and the floor space occupied.

[0010] Preferably, the upper mold assembly further includes an upper mold pressing head and an upper mold pressing head mounting plate. An upper mold limiting rod is provided on the upper mold pressing head mounting plate, and a guiding column matching with the upper mold limiting rod is provided on the lower template. The upper mold pressing head is used to press and seal the products after liquid injection. The upper mold pressing head mounting plate is used to mount the upper mold pressing head and also mounts a limiting rod for positioning and limiting the upper mold shell. The guiding column on the lower template and the upper mold limiting rod on the upper mold shell together complete the positioning operation of the lower template and the upper mold shell.

[0011] Preferably, the lower mold assembly further includes a clamping mechanism. The clamping mechanism is provided on the lower side of the product accommodation groove. The clamping mechanism includes a product limiting block and a stop rod. The limiting block is integrally connected to the stop rod, and the stop rod protrudes from the limiting block and faces the side of the product accommodation groove. The clamping mechanism is used to clamp and position the products. Specifically, the product limiting block can tightly limit the side of the product, and the stop rod can penetrate into the flow channel hole at the bottom of the product to limit the product in the vertical direction and the circumferential direction, thus completing the clamping and positioning operation of the product. Of course, since the product limiting block and the stop rod are integrally connected, only one telescopic cylinder is needed to complete the driving control.

[0012] Preferably, it further includes a servo press. There is a tooling table on the servo press, and the filling tooling is installed on the tooling table. A driving device for driving the upper die assembly to move is provided above the servo press. The filling tooling is arranged on the tooling table of the servo press, and the driving device at the top of the servo press drives the upper die assembly at the top of the filling tooling, so as to realize the vertical movement of the upper die shell and achieve the mold closing and pressing operation.

[0013] Preferably, the telescopic driving mechanism includes a liquid injection piston. There is a liquid injection channel inside the liquid injection piston. One end of the liquid injection piston is connected to the liquid injection pipe, and the other end of the liquid injection piston is provided with a liquid inlet. The liquid injection channel in the liquid injection piston connects the liquid injection pipe and the liquid inlet, and is used to transport the product solution. The liquid inlet is connected to a water pump structure, and the product solution is input through the water pump and finally transported to the product through the liquid injection pipe.

[0014] Preferably, an avoidance area is provided on the telescopic driving mechanism, and the liquid inlet is located in the avoidance area. Since the telescopic driving mechanism needs to drive the liquid injection pipe to move reciprocally, in order to avoid interference between the device (liquid injection pipeline) connected to the liquid inlet and the telescopic driving mechanism, an avoidance area is set on the telescopic driving mechanism for its movement.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: (1) This solution can realize the filling process of external products in the filling machine and ensure the production of products in a vacuum environment; (2) It can stably control the pressing performance of products with precise control; (3) It is controlled by servo equipment, with high automation and high pressing efficiency. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the filling tooling of the present utility model.

[0017] Figure 2 It is a schematic diagram of the mold opening state of the filling tooling of the present utility model.

[0018] Figure 3 It is a schematic diagram of the first-stage riveting and pressing state of the filling tooling of the present utility model.

[0019] Figure 4 It is a schematic diagram of the second-stage riveting and pressing state of the filling tooling of the present utility model.

[0020] Figure 5 It is an axonometric drawing of the present utility model.

[0021] In the figure: 1. Filling tooling, 2. Upper mold shell, 3. Lower template, 4. Sealing structure, 5. Product accommodation groove, 6. Liquid injection assembly, 7. Telescopic drive mechanism, 8. Liquid injection pipe, 9. Air extraction port, 10. Air extraction device, 11. Liquid filling device, 12. Water pump, 13. First valve assembly, 14. Upper mold pressing head, 15. Upper mold pressing head mounting plate, 16. Upper mold limiting rod, 17. Guide post, 18. Product limiting block, 19. Stop rod, 20. Servo press, 21. Tooling table, 22. Drive device, 23. Liquid injection piston, 24. Liquid injection channel, 25. Liquid inlet, 26. Avoidance area, 27. Lower mold shell, 28. Product, 29. Telescopic piston, 30. First cylinder, 31. Fixed seat, 32. Adjusting rod, 33. Bottom plate, 34. Product limiting table, 35. Second cylinder, 36. Flow channel hole, 37. Control panel. Detailed implementation manner

[0022] The following will further specifically illustrate the technical solutions of the present utility model through specific embodiments in conjunction with the accompanying drawings.

[0023] Embodiment 1: As Figures 1 to 4 shown, a conical suspension dry filling machine includes a filling tooling 1. The filling tooling 1 includes an upper mold assembly and a lower mold assembly. The upper mold assembly is located above the lower mold assembly. The upper mold assembly includes a cylindrical upper mold shell 2. The interior of the upper mold shell 2 is a cavity structure. A liquid injection assembly 6 and an air extraction port 9 are provided on the side wall of the upper mold shell 2. The liquid injection assembly 6 and the air extraction port 9 are arranged opposite to each other. An upper mold pressing head 14 is provided at the top of the upper mold shell 2 and inside the upper mold shell 2. The lower mold assembly includes a lower template 3. A cylindrical lower mold shell 27 is provided at the bottom of the lower template 3. The top of the lower mold shell 27 is sealed by the lower template 3. A product accommodation groove 5 is provided on the surface of the lower template 3. The product accommodation groove 5 is an overall conical groove for accommodating the product 28. It should be noted that the liquid injection assembly 6 and the air extraction port 9 can also be provided on the lower template 3. Specifically, an annular cavity (not shown in the figure) can be provided on the upper part of the lower template 3. The annular cavity can be integrally formed with the upper surface of the lower template 3, and the liquid injection assembly 6 and the air extraction port 9 can be provided on the side wall of the annular cavity. In this way, the liquid injection assembly 6 and the air extraction port 9 do not have to move up and down with the upper mold shell 2. In this embodiment, the description is based on the liquid injection assembly 6 and the air extraction port 9 both being provided on the side wall of the upper mold shell 2.

[0024] Specifically, the bottom of the upper mold shell 2 can be attached to the upper surface of the lower template 3. The upper mold shell 2 can be driven by a drive device to move up and down in the vertical direction, as Figure 2As shown, in the mold-open state, the upper mold shell 2 and the lower template 3 are in a separated state. At this time, the product 28 can be placed into the product accommodating groove 5 of the lower template 3 or the product 28 that has completed liquid injection can be taken out from the product accommodating groove 5. A sealing structure 4 is provided between the bottom of the upper mold shell 2 and the upper surface of the lower template 3. Specifically, a sealing ring is provided on the bottom circle of the upper mold shell 2, and a sealing groove is provided on the surface of the lower template 3 corresponding to the position of the bottom circle of the upper mold shell 2. After the upper mold shell 2 moves downward and fits with the lower template 3, the sealing ring at the bottom of the upper mold shell 2 will fit with the sealing groove on the surface of the lower template 3 to achieve a sealing effect, so that a closed cavity is formed between the upper mold shell 2 and the lower template 3. Of course, the positions of the sealing ring and the sealing groove can be interchanged between the upper mold shell 2 and the lower template 3, not limited to the above description.

[0025] A through hole is provided at the top of the upper mold shell 2. A telescopic piston 29 is slidably connected inside the through hole. A sealing ring is also provided between the telescopic piston 29 and the through hole to ensure the formation of a sealing structure inside the upper mold shell 2. A lower mold pressing head mounting plate 15 is provided at the bottom of the telescopic piston 29. A lower mold pressing head 14 is fixedly connected to the lower side of the lower mold pressing head mounting plate 15. The lower mold pressing head 14 and the lower mold pressing head mounting plate 15 are fixed by fasteners such as screws. When the telescopic piston 29 moves, it can drive the lower mold pressing head 14 to move up and down. On the lower template 3, after the upper template 2 and the lower template 3 are closed, the position of the product accommodating groove 5 just corresponds to the position of the lower mold pressing head 14, so as to ensure the calibration between the lower mold pressing head 14 and the product 28 and ensure effective pressing work.

[0026] It should be noted that a lower mold limiting rod 16 is also provided at the bottom of the lower mold pressing head mounting plate 15. Similarly, a guiding column 17 is provided on the lower template 3. The vertical length of the lower mold limiting rod 16 is less than the length of the lower mold pressing head 14, and after the product 28 is placed in the product accommodating groove 5, the height of the upper surface of the product 28 is also higher than the height of the guiding column 17. There is a certain frictional force between the lower mold pressing head mounting plate 15 and the inner wall of the upper mold shell 2, and they can slide relatively, so that the lower mold pressing head mounting plate 15 and the upper mold shell 2 are stably installed and the pressing work can be carried out. Specifically, as Figures 2 to 4As shown, when the telescopic piston 29 moves downward, the telescopic piston 29 drives the entire upper die assembly to move downward until the upper die shell 2 and the lower template 3 are in sealed cooperation; then the telescopic piston 29 continues to move downward. At this time, relative sliding begins to occur between the inner wall of the upper die head mounting plate 15 and the upper die shell 2. The upper die head mounting plate 15 moves downward, driving the upper die head 14 to move downward together. As the upper die head 14 moves downward, the upper die head 14 first starts to press-fit the product 28 in the product accommodating groove 5 and causes the product to deform (be flattened) into the pressure maintaining state; until the upper die limiting rod 16 on the upper die head mounting plate 15 abuts against the guiding column 17 on the lower template 3, that is, the press-fitting of the product is completed. After the press-fitting work is completed, the mold needs to be opened to take out the product, and the mold opening operation process is opposite to the above-mentioned mold closing process.

[0027] The liquid injection assembly 6 includes a telescopic driving mechanism 7. The telescopic driving mechanism 7 includes a first cylinder 30, a liquid injection piston 23, and a fixed seat 31 fixed on the outer wall of the upper die shell 2; the fixed seat 31 is hermetically connected to the outer wall of the upper die shell 2 to ensure the airtightness inside the upper die shell 2; the liquid injection piston 23 is slidably connected inside the fixed seat 31. One end of the liquid injection piston 23 can extend into the upper die shell 2, and the other end of the liquid injection piston 23 is fixedly connected to the telescopic end of the first cylinder 30. When the first cylinder 30 operates, it drives the liquid injection piston 23 to reciprocate inside the fixed seat 31. A liquid injection channel 24 is provided inside the liquid injection piston 23. An avoidance area 26 is provided between the first cylinder 30 and the fixed seat 31, and the connection between the first cylinder 30 and the liquid injection piston 23 is located at the position where the avoidance area 26 is located. A liquid inlet 25 is provided on the liquid injection piston 23, and a liquid delivery pipe is connected to the liquid inlet 25. When the first cylinder 30 makes a telescopic movement, the liquid delivery pipe will move inside the avoidance area 26 to avoid interference between the liquid delivery pipe and other structures. A liquid injection pipe 8 is provided at the other end of the liquid injection piston 29. The liquid injection pipe 8 is in a downwardly curved state to enable the liquid in the liquid injection channel 24 to be injected downward from the liquid injection pipe 8 into the cavity of the product 28, avoiding the liquid being injected too far and making it difficult to control the injection effect. In this solution, the telescopic driving mechanism 7 is used for liquid injection operation, which can make the liquid injection pipe 8 move closer to the position where the product 28 is located, and better perform the liquid injection operation.

[0028] The air extraction port 9 on the side wall of the upper die shell 2 is used to perform air extraction operation on the cavity formed between the upper die shell 2 and the lower template 3 and create a vacuum environment inside the cavity; an air extraction device is connected to the air extraction port 9. Specifically, the air extraction device uses a vacuum pump, a second valve assembly, a vacuum sensor, etc. When the air extraction port 9 is connected to the air extraction device, it is also necessary to perform sealing treatment at the air extraction port 9 to prevent air leakage.

[0029] The inner part of the lower die shell 27 is located below the lower template 3. Four adjusting rods 32 are arranged at the bottom of the lower template 3. A bottom plate 33 is arranged on the adjusting rods 32. The bottom plate 33 can be adjusted up and down on the adjusting rods 32. A clamping mechanism and a product limiting platform 34 are arranged on the bottom plate 33. A stepped slot is arranged on the product limiting platform 34 for accommodating the conical bottom part at the bottom of the product 28. The clamping mechanism is arranged on one side of the product limiting platform 34. Specifically, the clamping mechanism includes a second cylinder 35, a product limiting block 18 and a stop rod 19. The telescopic end of the second cylinder 35 is fixedly connected with the product limiting block 18. When the second cylinder 35 acts, it drives the product limiting block 18 to move back and forth. As Figure 2 or Figure 3 or Figure 4 shown, when the telescopic rod of the second cylinder 35 extends, the product limiting block 18 moves to the left side and laterally presses the product 28 tightly within the product limiting platform 34. The stop rod 19 and the product limiting block 18 are of an integral structure. The stop rod 19 is arranged below the product limiting block 18 and protrudes to the left side relative to the product limiting block 18 (not fully shown in the figure). A runner hole 36 is arranged at the bottom of the product 28. The position of the stop rod 19 just corresponds to that of the runner hole 36. When the product limiting block 18 presses the product 28 tightly, the stop rod 19 can just be inserted into the runner hole 36 at the bottom of the product 28 to limit the product 28 in the vertical direction and the circumferential direction, thus completing the clamping and positioning operation of the product 28.

[0030] When filling the product in this solution, first place the product 28 in the product accommodating groove 5 of the lower template 3, and then perform the mold closing (primary riveting) operation to make the upper die shell 2 and the lower template 3 be in sealing fit. Then, inject liquid into the cavity of the product 28 through the liquid injection assembly 6. After injecting a certain amount of liquid, the telescopic driving mechanism 7 in the liquid injection assembly 6 retracts, and then perform the vacuum pumping operation, and then perform the secondary riveting to make the upper die pressing head 24 seal the cavity opening of the product 28. Then perform the mold opening operation, take out the filled product 28, and then perform the filling operation of the next product 28.

[0031] Embodiment 2: A conical suspension dry filling machine as Figures 1 to 5 shown, which includes a liquid injection device 11 and a servo press 20. A water pump 12, a first valve assembly 13, a cylinder and a gas extraction device 10 are arranged in the liquid injection device 11. A hydraulic type driving device 22 is arranged at the top of the servo press 20. A tooling table 21 is arranged in the middle of the servo press 20. A filling tooling 1 is arranged in the tooling table 21. The top of the filling tooling 1 is connected with the driving device 22. A control panel 37 is also arranged on the servo press 20, which can adjust and monitor the parameters of the entire filling machine and grasp the working state of the filling machine in real time.

[0032] The liquid filling device 11 and the servo press 20 are connected by various pipelines, including air pipes, liquid pipes, etc., for the air path connection and liquid path connection between the liquid filling device 11, the servo press 20 and the filling tooling 1.

[0033] The filling tooling 1 includes an upper die assembly and a lower die assembly. The upper die assembly is located above the lower die assembly. The upper die assembly includes a cylindrical upper die shell 2. The interior of the upper die shell 2 is a cavity structure. A liquid injection assembly 6 and an air extraction port 9 are provided on the side wall of the upper die shell 2. The liquid injection assembly 6 and the air extraction port 9 are arranged opposite to each other. An upper die punch 14 is provided at the top of the upper die shell 2 and inside the upper die shell 2. The lower die assembly includes a lower template 3. A cylindrical lower die shell 27 is provided at the bottom of the lower template 3. The top of the lower die shell 27 is sealed by the lower template 3. A product accommodation groove 5 is provided on the surface of the lower template 3. The product accommodation groove 5 is a conical groove as a whole for accommodating the product 28. It should be noted that the liquid injection assembly 6 and the air extraction port 9 can also be provided on the lower template 3. Specifically, an annular cavity (not shown in the figure) can be provided on the upper part of the lower template 3. The annular cavity can be integrally formed with the upper surface of the lower template 3, and the liquid injection assembly 6 and the air extraction port 9 can be provided on the side wall of the annular cavity. In this way, the liquid injection assembly 6 and the air extraction port 9 do not have to move up and down with the upper die shell 2. In this embodiment, the description is based on the liquid injection assembly 6 and the air extraction port 9 both being provided on the side wall of the upper die shell 2.

[0034] Specifically, the bottom of the upper die shell 2 can be attached to the upper surface of the lower template 3. The upper die shell 2 can be driven by a driving device 22 to move up and down in the vertical direction. As Figure 2 shown, in the open die state, the upper die shell 2 and the lower template 3 are in a separated state. At this time, the product 28 can be placed into the product accommodation groove 5 of the lower template 3 or the filled product 28 can be taken out from the product accommodation groove 5. A sealing structure 4 is provided on the upper surface of the bottom of the upper die shell 2 and the lower template 3. Specifically, a sealing ring is provided on the bottom circle of the upper die shell 2, and a sealing groove is provided on the surface of the lower template 3 corresponding to the position of the bottom circle of the upper die shell 2. After the upper die shell 2 moves downward and fits with the lower template 3, the sealing ring at the bottom of the upper die shell 2 will fit with the sealing groove on the surface of the lower template 3 to achieve a sealing effect, so that a closed cavity is formed between the upper die shell 2 and the lower template 3. Of course, the positions of the sealing ring and the sealing groove can be interchanged between the upper die shell 2 and the lower template 3, not limited to the above description.

[0035] A through hole is provided at the top of the upper mold shell 2. A telescopic piston 29 is slidably connected inside the through hole. A sealing ring is also provided between the telescopic piston 29 and the through hole to ensure a sealed structure is formed inside the upper mold shell 2. A upper mold pressing head mounting plate 15 is provided at the bottom of the telescopic piston 29. A upper mold pressing head 14 is fixedly connected to the lower side of the upper mold pressing head mounting plate 15. The upper mold pressing head 14 and the upper mold pressing head mounting plate 15 are fixed by fasteners such as screws. When the telescopic piston 29 moves, it can drive the upper mold pressing head 14 to move up and down. On the lower template 3, when the upper template 2 and the lower template 3 are closed, the position of the product accommodating groove 5 just corresponds to the position of the upper mold pressing head 14, so as to ensure the calibration between the upper mold pressing head 14 and the product 28 and ensure effective pressing work.

[0036] It should be noted that an upper mold limiting rod 16 is also provided at the bottom of the upper mold pressing head mounting plate 15. Similarly, a guiding column 17 is provided on the lower template 3. The vertical length of the upper mold limiting rod 16 is less than the length of the upper mold pressing head 14. After the product 28 is placed in the product accommodating groove 5, the height of the upper surface of the product 28 is also higher than the height of the guiding column 17. There is a certain frictional force between the upper mold pressing head mounting plate 15 and the inner wall of the upper mold shell 2, and relative sliding can occur, so that the upper mold pressing head mounting plate 15 and the upper mold shell 2 are stably installed and the pressing work can be carried out. Specifically, as Figures 2 to 4 shown, when the telescopic piston 29 moves downward, the telescopic piston 29 drives the entire upper mold assembly to move downward until the upper mold shell 2 and the lower template 3 are in sealed cooperation; then the telescopic piston 29 continues to move downward. At this time, relative sliding begins to occur between the upper mold pressing head mounting plate 15 and the inner wall of the upper mold shell 2. The upper mold pressing head mounting plate 15 moves downward, driving the upper mold pressing head 14 to move downward together. As the upper mold pressing head 14 moves downward, the upper mold pressing head 14 first starts to press the product 28 in the product accommodating groove 5 and causes the product to deform (be flattened) into a pressure-holding state; until the upper mold limiting rod 16 on the upper mold pressing head mounting plate 15 abuts against the guiding column 17 on the lower template 3, the pressing of the product is completed. After the pressing work is completed, the mold needs to be opened to take out the product. The process of opening the mold is opposite to the above-mentioned process of closing the mold.

[0037] The liquid injection assembly 6 includes a telescopic drive mechanism 7. The telescopic drive mechanism 7 includes a first cylinder 30, a liquid injection piston 23, and a fixed seat 31 fixed to the outer wall of the upper die shell 2. The fixed seat 31 is hermetically connected to the outer wall of the upper die shell 2 to ensure the sealing performance inside the upper die shell 2. The liquid injection piston 23 is slidably connected inside the fixed seat 31. One end of the liquid injection piston 23 can extend into the upper die shell 2, and the other end of the liquid injection piston 23 is fixedly connected to the telescopic end of the first cylinder 30. When the first cylinder 30 operates, it drives the liquid injection piston 23 to reciprocate inside the fixed seat 31. A liquid injection channel 24 is provided inside the liquid injection piston 23. An avoidance area 26 is provided between the first cylinder 30 and the fixed seat 31, and the connection between the first cylinder 30 and the liquid injection piston 23 is located at the position of the avoidance area 26. A liquid inlet 25 is provided on the liquid injection piston 23, and a liquid delivery pipe is connected to the liquid inlet 25. When the first cylinder 30 performs telescopic movement, the liquid delivery pipe will move inside the avoidance area 26 to prevent the liquid delivery pipe from interfering with other structures. A liquid injection pipe 8 is provided at the other end of the liquid injection piston 29. The liquid injection pipe 8 is bent downward at a certain angle, so that the liquid in the liquid injection channel 24 can be injected downward into the cavity of the product 28 after coming out of the liquid injection pipe 8, avoiding the problem that the liquid injection is too far and the injection effect is difficult to control. In this solution, the telescopic drive mechanism 7 is used for liquid injection operation, which can make the liquid injection pipe 8 move closer to the position of the product 28, facilitating better liquid injection operation.

[0038] The air extraction port 9 on the side wall of the upper die shell 2 is used to extract air from the cavity formed between the upper die shell 2 and the lower template 3 and create a vacuum environment inside the cavity. An air extraction device is connected to the air extraction port 9. Specifically, the air extraction device uses a vacuum pump, a second valve assembly, a vacuum sensor, etc. When the air extraction port 9 is connected to the air extraction device, it is also necessary to seal the air extraction port 9 to prevent air leakage.

[0039] The lower die shell 27 is located below the lower template 3. Four adjusting rods 32 are provided at the bottom of the lower template 3. A bottom plate 33 is provided on the adjusting rods 32, and the bottom plate 33 can be adjusted up and down on the adjusting rods 32. A clamping mechanism and a product limiting table 34 are provided on the bottom plate 33. The product limiting table 34 is provided with a stepped slot for accommodating the tapered bottom part of the bottom of the product 28. The clamping mechanism is provided on one side of the product limiting table 34. Specifically, the clamping mechanism includes a second cylinder 35, a product limiting block 18, and a stop rod 19. The telescopic end of the second cylinder 35 is fixedly connected to the product limiting block 18. When the second cylinder 35 operates, it drives the product limiting block 18 to reciprocate, such as Figure 2 or Figure 3 or Figure 4As shown, when the telescopic rod of the second cylinder 35 extends, the product limiting block 18 moves to the left, and laterally presses and tightens the product 28 in the product limiting platform 34. The stop rod 19 and the product limiting block 18 are of an integral structure. The stop rod 19 is arranged below the product limiting block 18 and protrudes to the left relative to the product limiting block 18 (not fully shown in the figure). A flow channel hole 36 is provided at the bottom of the product 28, and the position of the stop rod 19 just corresponds to that of the flow channel hole 36. When the product limiting block 18 presses and tightens the product 28, the stop rod 19 can just be inserted into the flow channel hole 36 at the bottom of the product 28 to limit the product 28 in the vertical direction and the circumferential direction, thereby completing the clamping and positioning operation of the product 28.

[0040] When filling the product in this solution, first place the product 28 in the product accommodating groove 5 of the lower template 3, then perform the mold closing (first-stage riveting pressing) operation to make the upper mold shell 2 and the lower template 3 be in sealing cooperation. Then, inject liquid into the cavity of the product 28 through the liquid injection assembly 6. After injecting a certain amount of liquid, the telescopic driving mechanism 7 in the liquid injection assembly 6 retracts, then perform the vacuum pumping operation, and then perform the second-stage riveting pressing to make the upper mold pressing head 24 seal the cavity opening of the product 28. Then perform the mold opening operation, take out the filled product 28, and then perform the filling operation of the next product 28.

Claims

1. A cone-suspended dry filling machine, characterized in that, It includes a filling tooling, the filling tooling includes an upper die assembly and a lower die assembly, the upper die assembly includes an upper die shell, the lower die assembly includes a lower template, the upper die shell moves up and down in the vertical direction and can cooperate with the lower template, a sealing structure is provided between the lower template and the upper die shell, and a product accommodating groove is provided on the lower template.

2. The cone-suspended dry filling machine according to claim 1, characterized in that, A liquid injection assembly is provided on the upper die shell or the lower template, the liquid injection assembly includes a telescopic driving mechanism, and a liquid injection pipe is provided at the output end of the telescopic driving mechanism.

3. The cone-suspended dry filling machine according to claim 2, characterized in that, An air extraction port is provided on the upper die shell or the lower template, and the air extraction port is connected to an air extraction device.

4. The cone-suspended dry filling machine according to claim 3, wherein, It further includes a liquid filling device, a water pump and a first valve assembly are provided in the liquid filling device, and the water pump is connected to the liquid injection assembly through the first valve assembly.

5. The cone-suspended dry filling machine according to claim 4, characterized in that, The air extraction device is provided in the liquid filling device, and a vacuum pump and a second valve assembly are provided in the air extraction device.

6. A cone-suspended dry filling machine according to any one of claims 1 to 5, characterized in that, The upper die assembly further includes an upper die pressing head and an upper die pressing head mounting plate, an upper die limiting rod is provided on the upper die pressing head mounting plate, and a guiding column cooperating with the upper die limiting rod is provided on the lower template.

7. A cone-suspended dry filling machine according to any one of claims 1 to 5, characterized in that, The lower die assembly further includes a clamping mechanism, the clamping mechanism is arranged on the lower side of the product accommodating groove, the clamping mechanism includes a product limiting block and a stop rod, the limiting block is integrally connected with the stop rod, and the stop rod protrudes from the limiting block and faces the side of the product accommodating groove.

8. A cone-suspended dry filling machine according to any one of claims 1 to 5, characterized in that, It further includes a servo press, a tooling table is provided on the servo press, the filling tooling is arranged on the tooling table, and a driving device for driving the upper die assembly to move is provided above the servo press.

9. The cone-suspended dry filling machine according to claim 4, characterized in that, The telescopic driving mechanism includes a liquid injection piston, a liquid injection channel is provided inside the liquid injection piston, one end of the liquid injection piston is connected to the liquid injection pipe, and a liquid inlet is provided at the other end of the liquid injection piston.

10. A conical suspension dry filling machine according to claim 9, characterized in that, An avoidance area is provided on the telescopic driving mechanism, and the liquid inlet is located in the avoidance area.

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