Gel bead packaging testing machine

Abstract

The utility model relates to the technical field of gel bead packaging equipment, in particular to a gel bead packaging testing machine which comprises a heat sealing set, a workbench panel and a rack, and a molding set is further installed at the upper end of the workbench panel. The heat sealing set comprises an air cylinder and a heat sealing machine. The air cylinder comprises a cylinder body and a piston rod. The heat sealing machine comprises a heating plate, an adjusting part, a mounting box and a heat conducting piece, the mounting box and the heat conducting piece jointly define a sealing cavity, the heat sealing machine is located between the air cylinder and the molding set, the heat conducting piece and the molding set are oppositely arranged, and the mounting box is fixed to the piston rod; the heating plate is located in the sealing cavity, the adjusting part is connected to the air cylinder or the mounting box, the heating plate is connected to the adjusting part, and the adjusting part is used for adjusting attachment and separation of the heating plate and the heat-conducting fin. After the technical scheme is adopted, after heat sealing is finished, the heating plate is separated from the heat-conducting fin, the heat-conducting fin is difficult to be supplemented with heat, the heat dissipating capacity of the heat-conducting fin is gradually reduced, the heat loss of the heat sealing machine is relatively small, the temperature of the heating plate is not reduced, and the preheating speed is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of condensed bead packaging equipment, in particular to a condensed bead packaging testing machine. Background Art

[0002] The utility model patent with authorization announcement number CN220699744U discloses a condensed bead production device. Although this utility model overcomes the shortcomings of traditional condensed bead production such as manual cutting of outer film, tensioning of upper film, manual dipping in water, and cumbersome manual operations during packaging, it can greatly improve the efficiency and quality of condensed bead production. A heating plate is fixedly installed in the upper mold of the equipment, and the heating plate and the upper mold are always in contact with each other. When the heating plate continues to work, the upper mold is continuously heated by the heating plate, and the heat conduction efficiency is high, which is suitable for continuous packaging; however, in the laboratory sample process, after heat sealing a condensed bead, it is often necessary to wait for a period of preparation time before heat sealing the next condensed bead; when directly using the equipment disclosed in the patent document with authorization announcement number CN220699744U for sample preparation, after heat sealing a condensed bead, if the heating function of the heating plate is not turned off, the heating plate continues to heat the upper mold, the temperature of the upper mold remains unchanged, and the upper mold dissipates heat to the outside world with almost constant heat dissipation per unit time, resulting in large heat loss. If the heating function of the heating plate is turned off, after preparation is completed, the problem of slow preheating speed is prone to occur.

[0003] In view of this, the applicant conducted an in-depth study on the above-mentioned issues, which led to the present case. Utility Model Content

[0004] The utility model aims to provide a condensed bead packaging testing machine with relatively small heat loss and relatively fast preheating speed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A condensation bead packaging testing machine comprises a heat sealing group, a horizontally arranged workbench panel and a frame fixed to the upper end of the workbench panel, and a molding group is also installed on the upper end of the workbench panel; the heat sealing group comprises a cylinder and a heat sealing machine, the cylinder comprises a cylinder body and a piston rod slidably connected to the cylinder body, the cylinder body is fixed to the frame and arranged vertically; the heat sealing machine comprises a heating plate, an adjusting part, a mounting box with an opening facing downward and a heat conductive sheet covering the opening of the mounting box, the mounting box and the heat conductive sheet together form a sealed cavity, the heat sealing machine is located between the cylinder and the molding group, the heat conductive sheet is arranged opposite to the molding group, and one end of the mounting box away from the heat conductive sheet is fixed to the piston rod; the heating plate is located in the sealed cavity and arranged parallel to the heat conductive sheet;

[0007] The adjusting part is connected to the installation box, and the adjusting part includes an internal guide rod, a screw rod and a motor for driving the screw rod to rotate. The internal guide rod and the screw rod are both located in the sealed cavity and arranged vertically. The internal guide rod is fixed to the installation box, the heating plate is slidably connected to the internal guide rod, the motor is fixed in the installation box, the heating plate is located between the motor and the heat conducting plate, the screw rod is fixed to the output shaft of the motor, and the heating plate is spirally connected to the screw rod;

[0008] Alternatively, the adjusting portion is connected to the cylinder, the piston rod comprises a piston portion and a rod portion, the piston portion is slidably connected to the inner cavity of the cylinder body, the rod portion is vertically arranged, the upper end of the rod portion is fixed to the piston portion, and the lower end passes through the cylinder body and is connected to the installation box; a return spring is arranged in the cylinder body, one end of the return spring is connected to one end of the inner cavity of the cylinder body close to the heat sealer, and the other end is connected to one end of the piston portion close to the heat sealer; the adjusting portion comprises an adjusting spring, an adjusting piston and an adjusting rod, the adjusting piston is slidably connected to the inner cavity of the cylinder body and is located on the side of the piston portion away from the heat sealer, the adjusting rod is coaxially arranged with the rod portion, and the The adjusting rod is slidably connected to the rod portion and the mounting box at the same time, one end of the adjusting rod is fixed to the adjusting piston, and the other end is fixedly connected to the heating plate; the adjusting spring is located between the piston portion and the adjusting piston, and the two ends of the adjusting spring are respectively connected to the piston portion and the adjusting piston; the vertical distance between one end of the heating plate close to the heat conducting plate and one end of the adjusting piston close to the heat conducting plate is set as a first distance; the vertical distance between one end of the heat conducting plate close to the heating plate and one end of the piston portion away from the heat conducting plate is set as a second distance; the first distance is greater than or equal to the sum of the second distance and the length of the adjusting spring compressed to the limit position.

[0009] Preferably, the heat sealing group also includes an end guide rod and a guide end plate, and the guide end plate is fixed to the mounting box; the end guide rod is arranged parallel to the cylinder, the end guide rod is slidably connected to the frame, and the lower end of the end guide rod is fixed to the guide end plate.

[0010] Preferably, the frame is provided with a guide sleeve, a roller set is provided in the guide sleeve, the roller set includes two rollers arranged side by side and rotatably connected to the guide sleeve, the end guide rod is located between the two rollers, the two rollers are respectively in contact with the end guide rod, and the axes of the two rollers are perpendicular to the axis of the end guide rod.

[0011] Preferably, there are at least two roller sets, and each roller set is arranged in a straight line along the axial direction of the guide sleeve.

[0012] Preferably, the molding group includes a vacuum cavity base and a molding mold, the molding mold is installed on the vacuum cavity base, a through hole is opened in the mold cavity of the molding mold, the mold cavity of the molding mold is connected with the inner cavity of the vacuum cavity base through the through hole, and the side wall of the vacuum cavity base is provided with a vacuum hole, and the vacuum hole is connected to the vacuum system through a pipeline.

[0013] Preferably, the vacuum system includes a vacuum pump, a negative pressure tank, a vacuum regulating valve and a vacuum box, and the vacuum pump, the negative pressure tank, the vacuum regulating valve, the vacuum box and the vacuum hole are connected in sequence through pipelines.

[0014] Preferably, an electronic negative pressure gauge is provided in the vacuum box.

[0015] Preferably, a control console for operating the heat sealing group is also installed on the upper end of the workbench panel.

[0016] Preferably, the console is provided with a double-button control switch.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are:

[0018] 1. The fitting and separation of the heating plate and the heat conductive sheet are adjusted by the adjustment unit. After the heat sealing of the condensation beads is completed, the heating plate and the heat conductive sheet are separated from each other. Since the air flow inside the installation box is almost negligible and the thermal conductivity of the air is extremely low, the air inside the installation box plays a good heat insulating role, which makes it difficult for the heat conductive sheet to obtain heat supplement from the heating plate. The temperature of the heat conductive sheet gradually decreases and the heat dissipation per unit time to the outside world gradually decreases. The heat loss of the heat conductive sheet is relatively small, and the heat loss of the heat sealing machine is relatively small. After preparation, the heating plate and the heat conductive sheet are fitted together, and the heating plate can directly heat the heat conductive sheet. Compared with turning off the heating function of the heating plate, the temperature of the heating sheet does not drop, and the preheating speed is relatively fast.

[0019] 2. By setting the end guide rod and the guide end plate, the piston rod can be ensured to move smoothly in the cylinder to prevent the axis deviation of the piston rod during the movement. This can protect the cylinder and the piston rod and extend the service life of the cylinder.

[0020] 3. By setting up a roller set, rolling friction is used instead of sliding friction, which is helpful to reduce the friction between the end guide rod and the guide sleeve.

[0021] 4. By setting up a negative pressure tank, the negative pressure tank is used for pre-vacuuming, which is beneficial to improve the vacuuming efficiency of the vacuum system.

[0022] 5. An electronic negative pressure gauge is set in the vacuum box to monitor the vacuum degree inside the vacuum box.

[0023] 6. By setting a reset spring, an adjusting spring, an adjusting piston and an adjusting rod, the cylinder synchronously controls the piston rod to press down and the heating plate to fit the heat conducting sheet. After the cylinder is depressurized, the piston rod automatically resets and the heating plate and the heat conducting sheet automatically separate.

[0024] 7. The motor drives the screw to rotate, thereby driving the heating plate to move in the vertical direction, so as to adjust the distance between the heating plate and the heat conducting sheet, thereby realizing the control of the fitting and separation of the heating plate and the heat conducting sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a condensed bead packaging testing machine according to the first embodiment of the present utility model;

[0026] Figure 2 It is a cross-sectional structural schematic diagram of a heat sealing machine according to Embodiment 1 of the present utility model;

[0027] Figure 3 This is a schematic cross-sectional structure diagram of a guide sleeve according to Embodiment 1 of the present utility model;

[0028] Figure 4 This is a schematic structural diagram of a molding group according to Embodiment 1 of the present utility model;

[0029] Figure 5 This is a schematic cross-sectional structure diagram of a molding group according to Embodiment 1 of the present utility model;

[0030] Figure 6 This is a schematic structural diagram of a vacuum system according to Embodiment 1 of the present utility model;

[0031] Figure 7 This is a schematic structural diagram of a cylinder and a heat sealer according to a second embodiment of the utility model.

[0032] In the figure:

[0033] 100- workbench panel; 110- molding group;

[0034] 111- vacuum chamber base; 112- forming mold;

[0035] 113-through hole; 114-vacuum hole;

[0036] 120-Control console; 130-Vacuum system;

[0037] 131-vacuum pump; 132-negative pressure tank;

[0038] 133-vacuum regulating valve; 134-vacuum box;

[0039] 135-Electronic Vacuum Gauge

[0040] 200-frame; 210-guide sleeve;

[0041] 211-Roller set;

[0042] 300-heat sealing group; 310-cylinder;

[0043] 311-piston rod; 311A-piston part;

[0044] 311B-rod; 312-cylinder body;

[0045] 313-return spring;

[0046] 320-heat sealing machine; 321-installation box;

[0047] 322-heating plate; 323-heat conducting sheet;

[0048] 324-Regulation Department;

[0049] 330-end guide rod 340-guide end plate;

[0050] 410-internal guide rod; 420-screw rod;

[0051] 430-motor;

[0052] 510-adjusting spring; 520-adjusting piston;

[0053] 530-adjustment rod; DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. 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.

[0055] Embodiment 1

[0056] like Figures 1 to 6 As shown, this embodiment provides a condensation bead packaging testing machine, including a heat sealing group 300, a horizontally arranged workbench panel 100, and a frame 200 fixed to the upper end of the workbench panel 100. A molding group 110 and a control console 120 are also installed on the upper end of the workbench panel 100. The control console 120 is used to operate the heat sealing group 300. The control console 120 is provided with a double-button control switch. When in use, the double buttons need to be pressed at the same time to start the heat sealing group 300. The double buttons are provided to prevent the staff from accidentally touching the heat sealing group 300 during the test, thereby preventing accidents and improving the safety of the test process.

[0057] The heat sealing group 300 includes a cylinder 310 and a heat sealing machine 320. The cylinder 310 includes a cylinder body 312 and a piston rod 311. The piston rod 311 is slidably connected to the inner cavity of the cylinder body 312. The cylinder body 312 is fixed to the frame 200 and arranged vertically.

[0058] The heat sealing machine 320 includes a mounting box 321, a heating plate 322, an adjusting part 324 and a heat conductive sheet 323. The opening of the mounting box 321 faces downward, and a heating rod is arranged in the heating plate 322, and heat is supplied to the heating plate 322 through the heating rod; the heat conductive sheet 323 covers the opening of the mounting box 321, and the mounting box 321 and the heat conductive sheet 323 together form a sealed cavity. The heat sealing machine 320 is located between the cylinder 310 and the molding group 110, and the heat conductive sheet 323 is arranged opposite to the molding group 110. The end of the mounting box 321 away from the heat conductive sheet 323 is fixed to the piston rod 311, and the heating plate 322 is located in the sealed cavity and arranged parallel to the heat conductive sheet 323, and the heating plate 322 does not contact the mounting box 321.

[0059] The adjusting part 324 is connected to the mounting box 321, and the heating plate 322 is connected to the adjusting part 324. The adjusting part 324 is used to adjust the fit and separation between the heating plate 322 and the heat conducting plate 323. In this embodiment, the adjusting part 324 includes an internal guide rod 410, a screw 420 and a motor 430 for driving the screw 420 to rotate. The motor 430 is electrically connected to the console 120, and the console 120 controls the motor 430 to rotate forward, reverse or stop. The internal guide rod 410 and the screw rod 420 are both located in the sealed cavity and arranged vertically. The internal guide rod 410 is fixed to the installation box 321. Specifically, the internal guide rod 410 includes an integrally formed threaded connection section and a smooth section. The threaded connection section of the internal guide rod 410 is spirally connected to the bottom of the installation box 321, and the end of the smooth section of the internal guide rod 410 away from the threaded connection section is installed on the heat conductive sheet 323; the heating plate 322 is slidably connected to the internal guide rod 410. Specifically, the heating plate 322 is provided with a guide through hole matching the internal guide rod 410, and the internal guide rod 410 is inserted into the guide through hole of the heating plate 322, and the internal guide rod 410 is slidably connected to the guide through hole of the heating plate 322; the motor 43 0 is fixed in the installation box 321, the heating plate 322 is located between the motor 430 and the heat conducting sheet 323, the output shaft of the motor 430 is arranged vertically, and the output shaft of the motor 430 is located on the side of the motor 430 close to the heating plate 322, the screw 420 is fixed to the output shaft of the motor 430, the screw 420 and the output shaft of the motor 430 are arranged coaxially, the heating plate 322 is spirally connected with the screw 420, when the motor 430 rotates forward, the output shaft of the motor 430 drives the screw 420 to rotate, and then drives the heating plate 322 to move in the direction away from the heat conducting sheet 323, when the motor 430 rotates reversely, the output shaft of the motor 430 drives the screw 420 to rotate, and then drives the heating plate 322 to move in the direction close to the heat conducting sheet 323.

[0060] The motor 430 drives the screw 420 to rotate, thereby driving the heating plate 322 to move in the vertical direction, so as to adjust the distance between the heating plate 322 and the heat conductive sheet 323, and realize the control of the fitting and separation of the heating plate 322 and the heat conductive sheet 323. After the heat sealing of the condensation beads is completed, the motor 430 rotates forward to separate the heating plate 322 and the heat conductive sheet 323 from each other. At this time, since the air flow inside the installation box 321 is almost negligible and the thermal conductivity of the air is extremely low, the air inside the installation box 321 plays a good heat insulating role, and it is difficult for the heat conductive sheet 323 to obtain the heat supplement from the heating plate 322, and the temperature of the heat conductive sheet 323 The heat loss of the heat conductive sheet 323 is relatively small, and the heat loss of the heat sealing machine 320 is relatively small. After the preparation is completed, the motor 430 is reversed to make the heating plate 322 and the heat conductive sheet 323 fit each other. The heating plate 322 can directly heat the heat conductive sheet 323, and the condensed beads can be heat-sealed when the heat conductive sheet 323 reaches the temperature required for heat sealing. Because the heating function of the heating plate 322 is not turned off, the temperature of the heating sheet 322 does not drop. Therefore, compared with turning off the heating function of the heating plate 322, the total heat of the heat sealing machine 320 is large and the preheating speed is relatively fast.

[0061] The heat sealing group 300 also includes an end guide rod 330 and a guide end plate 340 , wherein the guide end plate 340 is fixed to the mounting box 321 ; the end guide rod 330 is arranged parallel to the cylinder 310 , the end guide rod 330 is slidably connected to the frame 200 , and the lower end of the end guide rod 330 is fixed to the guide end plate 340 . In this embodiment, the frame 200 is provided with a guide sleeve 210, and a roller set 211 is provided in the guide sleeve 210. The roller set 211 includes two rollers arranged side by side and rotatably connected to the guide sleeve 210. Specifically, the structure of each roller is the same. Taking one of the rollers as an example for explanation, the roller is provided with a bearing and a pin, the bearing is fixed inside the roller, the middle of the pin is fixed to the bearing, and the two ends of the pin are fixed to the guide sleeve 210. The roller, the bearing and the pin are all coaxially arranged; the end guide rod 330 is located between the two rollers, and the two rollers are respectively in contact with the end guide rod 330, and the axes of the two rollers are perpendicular to the axis of the end guide rod 330. Further, there are at least two groups of roller sets 211, and each roller set 211 is arranged in a straight line along the axis direction of the guide sleeve.

[0062] By providing the roller set 211 , rolling friction is used instead of sliding friction, which is helpful to reduce the friction between the end guide rod 330 and the guide sleeve 210 .

[0063] By providing the end guide rod 330 and the guide end plate 340, it is ensured that the piston rod 311 moves smoothly in the cylinder 310, and the axis deviation of the piston rod 311 during the movement is prevented. This can protect the cylinder 310 and the piston rod 311 and extend the service life of the cylinder 310.

[0064] The molding group 110 includes a vacuum chamber base 111 and a molding mold 112. The vacuum chamber base 111 has an inner cavity and a mold mounting groove for mounting the molding mold 112. The molding mold 112 has a mold cavity. The molding mold 112 is mounted on the mold mounting groove of the vacuum chamber base 111. Specifically, the notch of the mold mounting groove of the vacuum chamber base 111 faces upward and is arranged opposite to the heat conducting sheet 322. The molding mold 112 is mounted in the mold mounting groove of the vacuum chamber base 111. The upper end surface of the molding mold 112 is flush with the notch of the mold mounting groove of the vacuum chamber base 111. A through hole 113 is provided in the mold cavity of the molding mold 112. The mold cavity of the molding mold 112 is connected to the inner cavity of the vacuum chamber base 111 through the through hole 113. The side wall of the vacuum chamber base 111 is provided with a vacuum hole 114. The vacuum hole 114 is connected to the vacuum system 130 through a pipeline.

[0065] The vacuum system 130 includes a vacuum pump 131, a negative pressure tank 132, a vacuum regulating valve 133 and a vacuum box 134. The negative pressure tank 132 is used for pre-vacuuming, which is beneficial to improving the vacuuming efficiency of the vacuum system 130; the vacuum regulating valve 133 is used to adjust and control the vacuum degree of the vacuum box 134 during the vacuum forming process, thereby adjusting the suction force of the vacuum hole 114. The vacuum box 134 is provided with a pressure relief valve. The vacuum pump 131, the negative pressure tank 132, the vacuum regulating valve 133, the vacuum box 134 and the vacuum hole 114 are connected in sequence through pipelines.

[0066] The process of shaping the base film: first, smoothly cover the base film on the upper surface of the shaping group 110; then, the cylinder 310 drives the heat sealer 320 to press down so that the base film is pressed between the heat conductive sheet 323 and the molding mold 112, and the motor 430 reverses so that the heating plate 322 and the heat conductive sheet 323 fit each other, preheating the base film, and gradually opening the vacuum regulating valve 133 so that the negative pressure tank 132 is connected to the vacuum box 134. When the negative pressure value in the vacuum box 134 reaches the negative pressure value required for shaping the base film, close the vacuum regulating valve 133 to maintain constant pressure heating; after a period of constant pressure heating, the shaping of the base film is completed. It should be noted that the negative pressure value required for shaping the base film, the preheating temperature of the heating plate 322, the negative pressure value of the negative pressure tank 132, and the duration of constant pressure heating are all determined by the operator according to the test needs.

[0067] Furthermore, an electronic negative pressure gauge 135 is provided in the vacuum box 134 to monitor the vacuum degree inside the vacuum box 134 .

[0068] When using:

[0069] The first step is to turn on the control console 120, start the vacuum system 130, and pre-vacuum the negative pressure tank 132 so that the negative pressure value of the negative pressure tank 132 is N times the negative pressure value required for vacuum molding of the base film, where N is a numerical value greater than 2; preheat the heating plate 322.

[0070] The second step is to cut the base film of the beads and cover the base film on the forming mold 112; the cylinder 310 drives the heat sealer 320 to press down so that the base film is pressed between the thermal conductive sheet 323 and the forming mold 112, and the motor 430 reverses so that the heating plate 322 and the thermal conductive sheet 323 fit each other, and then preheat the base film.

[0071] The third step is to gradually open the vacuum regulating valve 133 to connect the negative pressure tank 132 with the vacuum box 134. When the negative pressure reading of the electronic negative pressure gauge 135 reaches the negative pressure value required for vacuum molding of the base film, close the vacuum regulating valve 133 to maintain constant pressure heating. After a period of constant pressure heating, the molding of the base film is completed.

[0072] In the fourth step, the cylinder 310 drives the heat sealer 320 to rise, and starts the vacuum system 130 to supplement the vacuum of the negative pressure tank 132, so that the negative pressure value of the negative pressure tank 132 is N times the negative pressure value required for vacuum molding of the bottom film; then the liquid is poured.

[0073] Step 5: Cut the mask with gel beads, cover it with water, and place it on the base mask.

[0074] In the sixth step, the cylinder 310 drives the heat sealer 320 to press down and perform heat sealing.

[0075] In the seventh step, the cylinder 310 drives the heat sealer 320 to rise, and the motor 430 rotates forward to separate the heating plate 322 and the heat conductive sheet 323 from each other, and the condensation bead heat sealing is completed.

[0076] In the eighth step, the pressure relief valve of the vacuum box 134 is opened to clear the negative pressure in the vacuum box 134, and the pressure relief valve of the vacuum box 134 is closed to take out the condensed beads.

[0077] When it is necessary to heat seal the next condensation bead, just repeat the second to eighth steps.

[0078] Embodiment 2

[0079] like Figure 7 As shown, the difference between this embodiment and the first embodiment is that the structure of the adjusting portion 324 is different, the connection structure between the adjusting portion 324 and the components of the condensation bead packaging testing machine is different, and the structure of the cylinder 310 is different.

[0080] In this embodiment, the air inlet of the cylinder 310 is located at the end away from the heat sealer 320. The piston rod 311 includes a piston portion 311A ​​and a rod portion 311B. The piston portion 311A ​​is slidably connected to the inner cavity of the cylinder body 312, and the rod portion 311B is arranged vertically. Specifically, the rod portion 311 and the cylinder body 312 are arranged coaxially, the upper end of the rod portion 311B is fixed to the piston portion 311A, and the lower end passes through the cylinder body 312 and is connected to the installation box 321; a reset spring 313 is provided in the cylinder body 312, and the reset spring 313 is used to reset the piston rod 311 during the pressure relief process. One end of the reset spring 313 is connected to the inner cavity of the cylinder body 312 near the heat sealer 320, and the other end is connected to the piston portion 311A ​​near the heat sealer 320.

[0081] The adjusting portion 324 includes an adjusting spring 510, an adjusting piston 520 and an adjusting rod 530. The adjusting piston 520 is slidably connected to the inner cavity of the cylinder body 312 and is located on the side of the piston portion 311A ​​away from the heat sealer 320. The adjusting rod 530 is coaxially arranged with the rod portion 311B. The adjusting rod 530 is slidably connected to the rod portion 311B and the mounting box 321 at the same time. Specifically, the piston rod 311 is provided with a first adjusting sliding hole matching the adjusting rod 530, and the bottom of the groove of the mounting box 321 is provided with a first adjusting sliding hole matching the adjusting rod 530. The adjusting rod 530 is inserted into the first adjusting sliding hole and the second adjusting sliding hole, and the adjusting rod 530 is slidably connected to the first adjusting sliding hole and the second adjusting sliding hole; one end of the adjusting rod 530 is fixed to the adjusting piston 520, and the other end is fixedly connected to the heating plate 322; the adjusting spring 510 is located between the piston part 311A ​​and the adjusting piston 520, and the two ends of the adjusting spring 510 are respectively connected to the piston part 311A ​​and the adjusting piston 520.

[0082] Suppose the vertical distance between one end of the heating plate 322 close to the heat-conducting plate 323 and one end of the adjusting piston 520 close to the heat-conducting plate 323 is a first distance; suppose the vertical distance between one end of the heat-conducting plate 323 close to the heating plate 322 and one end of the piston part 311A ​​away from the heat-conducting plate 323 is a second distance; the first distance is greater than or equal to the sum of the second distance and the length of the adjusting spring 510 after being compressed to the extreme position.

[0083] The adjustment spring 510 is used to adjust the distance between the heating plate 322 and the heat conducting sheet 323 , thereby achieving control over the fitting and separation of the heating plate 322 and the heat conducting sheet 323 . When the air pressure force of the cylinder 310 is greater than the force generated by the release of the elastic potential energy inside the adjusting spring 510, the adjusting spring 510 is gradually compressed until the force generated by the release of the elastic potential energy inside the adjusting spring 510 is equal to the air pressure force of the cylinder 310 or the compression stops when the heating plate 322 and the heat conductive sheet 323 are in contact with each other; when the air pressure force of the cylinder is less than the force generated by the release of the elastic potential energy inside the adjusting spring 510, the elastic potential energy of the adjusting spring 510 is released, so that the heating plate 322 and the heat conductive sheet 323 are separated. At this time, due to the small air flow inside the installation box 321 and the extremely low thermal conductivity of the air, the air inside the installation box 321 plays a good heat insulation role, thereby making it difficult for the heat conductive sheet 323 to obtain heat supplement from the heating plate 322, and the temperature of the heat conductive sheet 323 gradually decreases and the heat dissipation effect to the outside world gradually decreases. The heat loss of the heat conductive sheet 323 is relatively small, thereby making the heat loss of the heat sealing machine 320 relatively small.

[0084] By setting a reset spring 313, an adjustment spring 510, an adjustment piston 520 and an adjustment rod 530, the cylinder 310 synchronously controls the piston rod 311 to press down and the heating plate 322 to fit with the heat conductive sheet 323. After the cylinder 310 is depressurized, the piston rod 311 automatically resets and the heating plate 322 and the heat conductive sheet 323 automatically separate.

[0085] When using:

[0086] The first step is to turn on the control console 120, start the vacuum system 130, and pre-vacuum the negative pressure tank 132 so that the negative pressure value of the negative pressure tank 132 is N times the negative pressure value required for vacuum molding of the base film, where N is a numerical value greater than 2; preheat the heating plate 322.

[0087] The second step is to cut the base film of the beads and cover the base film on the forming mold 112; the cylinder 310 drives the heat sealer 320 to press down, and the heating plate 322 and the heat conductive sheet 323 are attached to preheat the base film.

[0088] The third step is to gradually open the vacuum regulating valve 133 to connect the negative pressure tank 132 with the vacuum box 134. When the negative pressure reading of the electronic negative pressure gauge 135 reaches the negative pressure value required for vacuum molding of the base film, close the vacuum regulating valve 133 to maintain constant pressure heating. After a period of constant pressure heating, the molding of the base film is completed.

[0089] In the fourth step, the cylinder 310 drives the heat sealer 320 to rise, the heating plate 322 is separated from the heat conductive sheet 323, and the vacuum system 130 is started to evacuate the negative pressure tank 132, so that the negative pressure value of the negative pressure tank 132 is N times the negative pressure value required for vacuum molding of the bottom film; then the liquid is poured.

[0090] Step 5: Cut the mask with gel beads, cover it with water, and place it on the base mask.

[0091] In the sixth step, the cylinder 310 drives the heat sealer 320 to press down, and the heating plate 322 and the heat conductive sheet 323 are attached to each other and heat-sealed.

[0092] In the seventh step, the cylinder 310 drives the heat sealer 320 to rise, the heating plate 322 and the heat conductive sheet 323 are separated, and the bead heat sealing is completed.

[0093] In the eighth step, the pressure relief valve of the vacuum box 134 is opened to clear the negative pressure in the vacuum box 134, and the pressure relief valve of the vacuum box 134 is closed to take out the condensed beads.

[0094] When it is necessary to heat seal the next condensation bead, just repeat the second to eighth steps.

[0095] The present invention is described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, all of which belong to the protection scope of the present invention.

Claims

1. A condensate bead packaging testing machine, comprising a heat sealing group, a horizontally arranged workbench panel and a frame fixed to the upper end of the workbench panel, characterized in that: A molding group is also installed on the upper end of the workbench panel; the heat sealing group includes a cylinder and a heat sealing machine, the cylinder includes a cylinder body and a piston rod slidably connected to the cylinder body, the cylinder body is fixed to the frame and arranged vertically; the heat sealing machine includes a heating plate, an adjusting part, a mounting box with an opening facing downward and a heat conductive sheet covering the opening of the mounting box, the mounting box and the heat conductive sheet together form a sealed cavity, the heat sealing machine is located between the cylinder and the molding group, the heat conductive sheet is arranged opposite to the molding group, and one end of the mounting box away from the heat conductive sheet is fixed to the piston rod; the heating plate is located in the sealed cavity and arranged parallel to the heat conductive sheet; The adjusting part is connected to the installation box, and the adjusting part includes an internal guide rod, a screw rod and a motor for driving the screw rod to rotate. The internal guide rod and the screw rod are both located in the sealed cavity and arranged vertically. The internal guide rod is fixed to the installation box, the heating plate is slidably connected to the internal guide rod, the motor is fixed in the installation box, the heating plate is located between the motor and the heat conducting plate, the screw rod is fixed to the output shaft of the motor, and the heating plate is spirally connected to the screw rod; Alternatively, the adjusting portion is connected to the cylinder, the piston rod comprises a piston portion and a rod portion, the piston portion is slidably connected to the inner cavity of the cylinder body, the rod portion is vertically arranged, the upper end of the rod portion is fixed to the piston portion, and the lower end passes through the cylinder body and is connected to the installation box; a return spring is arranged in the cylinder body, one end of the return spring is connected to one end of the inner cavity of the cylinder body close to the heat sealer, and the other end is connected to one end of the piston portion close to the heat sealer; the adjusting portion comprises an adjusting spring, an adjusting piston and an adjusting rod, the adjusting piston is slidably connected to the inner cavity of the cylinder body and is located on the side of the piston portion away from the heat sealer, the adjusting rod is coaxially arranged with the rod portion, and the The adjusting rod is slidably connected to the rod portion and the mounting box at the same time, one end of the adjusting rod is fixed to the adjusting piston, and the other end is fixedly connected to the heating plate; the adjusting spring is located between the piston portion and the adjusting piston, and the two ends of the adjusting spring are respectively connected to the piston portion and the adjusting piston; the vertical distance between one end of the heating plate close to the heat conducting plate and one end of the adjusting piston close to the heat conducting plate is set as a first distance; the vertical distance between one end of the heat conducting plate close to the heating plate and one end of the piston portion away from the heat conducting plate is set as a second distance; the first distance is greater than or equal to the sum of the second distance and the length of the adjusting spring after being compressed to the limit position.

2. A condensed bead packaging testing machine as claimed in claim 1, characterized in that: The heat sealing group also includes an end guide rod and a guide end plate, wherein the guide end plate is fixed to the mounting box; the end guide rod is arranged parallel to the cylinder, the end guide rod is slidably connected to the frame, and the lower end of the end guide rod is fixed to the guide end plate.

3. A condensed bead packaging testing machine as claimed in claim 2, characterized in that: The frame is provided with a guide sleeve, and a roller set is provided in the guide sleeve. The roller set includes two rollers arranged side by side and rotatably connected to the guide sleeve. The end guide rod is located between the two rollers. The two rollers are respectively in contact with the end guide rod, and the axes of the two rollers are perpendicular to the axis of the end guide rod.

4. A condensed bead packaging testing machine as claimed in claim 3, characterized in that: There are at least two roller sets, and each roller set is arranged in a straight line along the axial direction of the guide sleeve.

5. A condensed bead packaging testing machine as claimed in claim 1, characterized in that: The molding group includes a vacuum cavity base and a molding mold, the molding mold is installed on the vacuum cavity base, a through hole is opened in the mold cavity of the molding mold, the mold cavity of the molding mold is connected with the inner cavity of the vacuum cavity base through the through hole, and the side wall of the vacuum cavity base is provided with a vacuum hole, and the vacuum hole is connected to the vacuum system through a pipeline.

6. A condensed bead packaging testing machine as claimed in claim 5, characterized in that: The vacuum system comprises a vacuum pump, a negative pressure tank, a vacuum regulating valve and a vacuum box. The vacuum pump, the negative pressure tank, the vacuum regulating valve, the vacuum box and the vacuum hole are connected in sequence through pipelines.

7. A condensed bead packaging testing machine as claimed in claim 6, characterized in that: An electronic negative pressure gauge is arranged in the vacuum box.

8. A condensed bead packaging testing machine as claimed in claim 1, characterized in that: A control console for operating the heat sealing group is also installed on the upper end of the workbench panel.

9. A condensed bead packaging testing machine as claimed in claim 8, characterized in that: The console is provided with a double-button control switch.

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