Quick-change tool horizontal sealing mechanism

Abstract

This application discloses a quick-change blade horizontal sealing mechanism, including a mounting bracket mounted on the frame of a bag-making machine, an upper horizontal sealing device and a lower horizontal sealing device disposed opposite to each other on the mounting bracket, and a first driving device and a second driving device respectively connected to the upper and lower horizontal sealing devices. The upper horizontal sealing device includes a drive beam and an upper horizontal beam slidably disposed within the mounting bracket. The first driving device includes a servo motor, a drive shaft connected to the output shaft of the servo motor, and an eccentric connecting rod connected to the drive shaft. The bottom end of the eccentric connecting rod is hinged to the top end of the drive beam. A hot-blade cylinder connected to the upper horizontal beam is disposed within the drive beam. An upper hot-blade is disposed at the bottom of the upper horizontal beam via several quick-change devices. This quick-change blade horizontal sealing mechanism has a simple structure, and the hot-blade is mounted on the upper horizontal beam via quick-change devices, facilitating quick assembly and disassembly.

Description

Technical Field

[0001] This application relates to the field of automated production technology, and in particular to a quick-change tool-changing horizontal sealing mechanism. Background Technology

[0002] A bag-making machine is a machine that produces various packaging bags. In existing packaging bag manufacturing processes, the heat sealing step is an indispensable process. This heat sealing process requires the bag-making machine to have at least one heat sealing device. In existing bag-making machine heat sealing equipment, the heat sealing blades of the horizontal sealing heat press are mostly fixed with bolts, etc. When replacement is needed, all bolts must be removed, which is time-consuming and labor-intensive. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a quick-change horizontal sealing mechanism to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a quick-change blade horizontal sealing mechanism, including a mounting bracket set on the frame of a bag making machine, an upper horizontal sealing device and a lower horizontal sealing device arranged opposite to each other on the mounting bracket, and a first driving device and a second driving device respectively connected to the upper horizontal sealing device and the lower horizontal sealing device. The upper horizontal sealing device includes a drive beam and an upper horizontal beam slidably arranged in the mounting bracket. The first driving device includes a servo motor, a drive shaft connected to the output shaft of the servo motor, and an eccentric connecting rod connected to the drive shaft. The bottom end of the eccentric connecting rod is hinged to the top end of the drive beam. A hot-blade cylinder connected to the upper horizontal beam is arranged in the drive beam. An upper hot-blade is arranged at the bottom of the upper horizontal beam through several quick-change devices.

[0005] Furthermore, in the aforementioned quick-change tool transverse sealing mechanism, the quick-change device includes a clamp mounting plate disposed on the side wall of the upper crossbeam, clamping plates respectively disposed on both sides of the clamp mounting plate, a pressure claw hinged between the two clamping plates, and a push-pull quick clamp for driving the pressure claw.

[0006] Furthermore, in the aforementioned quick-change tool horizontal sealing mechanism, a sensing plate is connected to the end of the drive shaft opposite to the servo motor, and a sensor corresponding to the sensing plate is provided inside the mounting bracket.

[0007] Furthermore, in the aforementioned quick-change tool transverse sealing mechanism, the two ends of the drive beam and the upper crossbeam are respectively connected to the inner wall of the mounting bracket via the first guide rail.

[0008] Furthermore, in the aforementioned quick-change blade horizontal sealing mechanism, the piston rod of the hot-blade cylinder is connected to the upper crossbeam via a floating joint.

[0009] Furthermore, in the aforementioned quick-change blade horizontal sealing mechanism, an upper heating plate and an upper heat insulation plate are sequentially arranged between the upper heating blade and the upper crossbeam.

[0010] Furthermore, in the aforementioned quick-change blade horizontal sealing mechanism, the lower horizontal sealing device includes a lower horizontal beam slidably disposed within the mounting bracket and a lower hot blade disposed at the top of the lower horizontal beam. The second driving device includes a lifting cylinder, and its piston rod is connected to the lower horizontal beam.

[0011] Furthermore, in the aforementioned quick-change blade horizontal sealing mechanism, a lower heating plate and a lower heat insulation plate are sequentially arranged between the lower heating blade and the lower crossbeam.

[0012] Furthermore, in the aforementioned quick-change blade horizontal sealing mechanism, a silicone pad is provided at the top of the lower hot blade.

[0013] Furthermore, in the aforementioned quick-change blade horizontal sealing mechanism, support devices are respectively provided at both ends between the lower crossbeam and the bottom wall of the mounting bracket. The support device includes a fixed pad fixed to the bottom wall of the mounting bracket and a sliding pad sliding on the top surface of the fixed pad. A pad cylinder is connected to one side of the sliding pad, and an avoidance groove corresponding to the sliding pad is recessed at the bottom of the lower crossbeam.

[0014] Compared with the prior art, the horizontal sealing mechanism of the quick-change knife of this utility model has a simple structure. The hot knife is installed on the upper crossbeam through a quick-change device, which is convenient for quick disassembly and assembly. A support device is provided at the bottom of the lower crossbeam to improve the stability of the lower hot knife support. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a structural schematic of the quick-change blade horizontal sealing mechanism in a specific embodiment of this utility model.

[0016] Figure 2 The diagram shown is a schematic representation of the internal structure of the mounting bracket in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a schematic representation of the positions of the upper and lower horizontal sealing devices in a specific embodiment of this utility model.

[0018] Figure 4 The image shown is a side view of the upper horizontal sealing device in a specific embodiment of this utility model.

[0019] Figure 5 The diagram shown is a structural schematic of the quick-change device in a specific embodiment of this utility model.

[0020] Figure 6 The diagram shown is a structural schematic of the lower horizontal sealing device in a specific embodiment of this utility model. Detailed Implementation

[0021] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Combination Figures 1 to 6 As shown, a quick-change blade horizontal sealing mechanism includes a mounting bracket 1 mounted on the frame of a bag making machine, an upper horizontal sealing device 2 and a lower horizontal sealing device 3 mounted opposite to each other on the mounting bracket 1, and a first driving device 4 and a second driving device 5 respectively connected to the upper horizontal sealing device 2 and the lower horizontal sealing device 3. The upper horizontal sealing device 2 includes a driving beam 21 and an upper horizontal beam 22 slidably mounted in the mounting bracket 1. The first driving device 4 includes a servo motor 41, a driving shaft 42 connected to the output shaft of the servo motor 41, and an eccentric connecting rod 43 connected to the driving shaft 42. The bottom end of the eccentric connecting rod 43 is hinged to the top end of the driving beam 21. A hot knife cylinder 211 connected to the upper horizontal beam 22 is provided in the driving beam 21. The bottom of the upper horizontal beam 22 is provided with an upper hot knife 23 through six quick-change devices 6.

[0023] In this technical solution, the mounting bracket is a frame structure, which can be installed independently and vertically on the frame of the bag-making machine, or it can be integrated with the frame of the bag-making machine. The horizontal sealing mechanism is installed on the hot-pressing process of the bag-making machine through the mounting bracket to complete the horizontal sealing and hot-pressing of the packaging bag. The mounting bracket includes a horizontally set base plate, two wall plates set at the top of the base plate, and two side plates set between the two wall plates. The servo motor is fixed to one side of the top of the two wall plates through conventional motor mounts, etc. Its output shaft is connected to the drive shaft through couplings, etc. The drive shaft is connected to a conventional shaft. The support is rotatably connected to two wall panels and two side panels. The eccentric connecting rod includes an eccentric wheel sleeved on the drive shaft and a connecting rod rotatably sleeved on the eccentric wheel via a bearing. The bottom end of the connecting rod is connected to the top of the drive beam through a conventional hinge structure. The drive beam is connected to the upper crossbeam through a hot-blade cylinder. The hot-blade cylinder is a conventional telescopic cylinder and is connected to a compressed air source through an external constant pressure valve and air pipe, so that the output pressure of the hot-blade cylinder is a constant value, ensuring constant pressure during the hot-sealing process. The upper hot-blade is installed on the upper crossbeam through a quick-change device, which is convenient for disassembly and assembly and improves the efficiency of blade replacement.

[0024] For example, see Figures 1 to 5 As shown, the quick-change device 6 includes a clamp mounting plate 61 disposed on the side wall of the upper crossbeam 22, clamping plates 62 respectively disposed on both sides of the clamp mounting plate 61, a pressure claw 63 hinged between the two clamping plates 62, and a push-pull quick clamp 64 that drives the pressure claw 63.

[0025] In this technical solution, the clamp mounting plate is fixed to the side wall of the upper crossbeam by conventional bolts, etc. Two clamping plates are respectively installed on both sides of the clamp mounting plate by bolts, etc., and the space between the two clamping plates is enough to accommodate the pressure claw. The pressure claw is hinged to the two clamping plates by conventional cylindrical pins, etc. The push-pull quick clamp is an existing structure and is fixed to the clamp mounting plate by conventional bolts. The push-pull quick clamp is located at the top of the pressure claw. When the push-pull quick clamp is extended, its end abuts against the top of the pressure claw, so that the pressure claw holds the upper hot knife, thereby fixing the upper hot knife. When the push-pull quick clamp is retracted, its end separates from the pressure claw, and the pressure claw can rotate around the cylindrical pin, so that the upper hot knife can be removed for easy replacement. The inner wall of the top of the pressure claw and the clamp mounting plate are spaced apart to prevent the pressure claw from being unable to rotate.

[0026] For example, see Figures 1 to 4 As shown, the end of the drive shaft 42 that is away from the servo motor 41 is connected to a sensing plate 421, and a sensor 7 corresponding to the sensing plate 421 is provided in the mounting bracket 1.

[0027] In this technical solution, the sensing plate is fixed to the end of the drive shaft away from the servo motor by conventional bolts, and rotates synchronously with the drive shaft. The sensor is a conventional slotted photoelectric sensor used to identify the position of the sensing plate. When the sensing plate is in the slot of the sensor, the eccentric connecting rod and the drive beam are at the highest point. During the hot pressing process, the sensing plate rotates with the drive shaft and leaves the slot of the sensor. When the sensing plate returns to the slot of the sensor, the drive shaft rotates one revolution, that is, the upper hot knife completes one cycle of descending to the lowest point and resetting.

[0028] For example, see Figures 1 to 3 As shown, the two ends of the drive beam 21 and the upper crossbeam 22 are respectively connected to the inner wall of the mounting bracket 1 via the first guide rail 24.

[0029] In this technical solution, the first guide rail is fixed to the inner wall of the side plate of the mounting bracket by bolts, etc. The two ends of the drive beam and the two ends of the upper crossbeam are respectively connected to the slider of the first guide rail, thereby improving the stability and accuracy of the up and down sliding of the drive beam and the upper crossbeam.

[0030] For example, see Figures 1 to 3 As shown, the piston rod of the hot knife cylinder 211 is connected to the upper crossbeam 22 via a floating joint 212.

[0031] In this technical solution, the floating joint reduces the possibility of the piston rod of the hot knife cylinder being subjected to radial force, thus extending the service life of the hot knife cylinder.

[0032] For example, see Figures 1 to 4 As shown, an upper heating plate 25 and an upper heat insulation plate 26 are arranged sequentially between the upper heating blade 23 and the upper crossbeam 22.

[0033] In this technical solution, the upper heating plate and the upper insulation plate are fixed to the bottom surface of the upper crossbeam by bolts, etc. The upper heating plate is an existing electric heating plate used to heat the upper hot knife, and the upper insulation plate is an asbestos board, etc., which can be set in single or multiple layers for heat insulation between the upper heating plate and the upper crossbeam.

[0034] For example, see Figures 1 to 3 as well as Figure 6 As shown, the lower horizontal sealing device 3 includes a lower horizontal beam 31 slidably disposed in the mounting bracket 1 and a lower hot knife 32 disposed at the top of the lower horizontal beam 31. The second driving device 5 includes a lifting cylinder, and its piston rod is connected to the lower horizontal beam 31.

[0035] In this technical solution, the lifting cylinder drives the lower hot knife to rise through the lower crossbeam, and together with the upper hot knife, it acts on the film material to improve the hot sealing efficiency. The lifting cylinder is installed on the bottom surface of the mounting bracket base plate through conventional structures such as bolts and support columns, and its piston rod passes through the base plate and is connected to the bottom surface of the lower crossbeam through a floating joint.

[0036] For example, see Figures 1 to 3 as well as Figure 6 As shown, a lower heating plate 33 and a lower heat insulation plate 34 are sequentially arranged between the lower heating blade 32 and the lower crossbeam 31.

[0037] In this technical solution, the lower heating plate and the lower insulation plate are fixed to the bottom surface of the lower crossbeam by bolts, etc. The lower heating plate is an existing electric heating plate used to heat the lower hot knife, and the lower insulation plate is an asbestos board, etc., which can be set in single or multiple layers for heat insulation between the lower heating plate and the lower crossbeam.

[0038] For example, see Figures 1 to 3 as well as Figure 6 As shown, a silicone pad 35 is provided at the top of the lower heating blade 32.

[0039] In this technical solution, the silicone pad is elastic, which can avoid damaging the surface of the membrane material. A layer of Teflon or other non-stick cloth can also be laid on the top surface of the silicone pad to prevent the membrane material and the silicone pad from sticking together. The two sides of the non-stick cloth are fixed to the two sides of the lower heatsink by pressure strips.

[0040] For example, see Figures 1 to 3 as well as Figure 6As shown, support devices 8 are respectively provided at both ends between the lower crossbeam 31 and the bottom wall of the mounting bracket 1. The support device 8 includes a fixed pad 81 fixed to the bottom wall of the mounting bracket 1 and a sliding pad 82 sliding on the top surface of the fixed pad 81. A pad cylinder 83 is connected to one side of the sliding pad 82. The bottom of the lower crossbeam 31 is recessed with an avoidance groove corresponding to the sliding pad 82.

[0041] In this technical solution, after the lifting cylinder drives the lower hot knife to rise through the lower crossbeam, the piston rod of the pad cylinder retracts and drives the sliding pad to move outside the clearance groove, providing support for the lower crossbeam and preventing the pressure of the hot sealing from acting on the lifting cylinder. After the hot sealing is completed, the piston rod of the pad cylinder extends and moves the sliding pad directly below the clearance groove, without interfering with the reset of the lower crossbeam and the lower hot knife.

[0042] The two wall panels of the mounting bracket are respectively equipped with inlet and outlet ports to accommodate the film material. These ports expose the quick-change device, allowing for replacement of the upper heat exchanger without disassembling the mounting frame. The two wall panels also have access ports corresponding to the heat exchanger cylinder and the pad cylinder, facilitating adjustment of their speed and stroke. During actual production, the film material to be heat-sealed is positioned between the upper and lower heat exchangers. The heat exchanger cylinder and the lifting cylinder respectively move the upper and lower heat exchangers towards the corresponding surface of the film material. Once the upper and lower heat exchangers are in position, the servo... The motor drives the drive shaft to rotate, and through the eccentric connecting rod, it drives the drive beam to move down and reset. During the movement of the drive beam, the hot-seal cylinder maintains a constant pressure output, thereby ensuring a constant hot-seal pressure. When it is necessary to change the packaging bag model, loosen the push-pull quick clamp, and the pressure claw can rotate. Push the claw at the bottom of the pressure claw outward to remove the upper hot-seal knife. Replace it with the corresponding model of upper hot-seal knife. Push the claw at the bottom of the pressure claw inward and hook it onto the bottom surface of the upper hot-seal knife. Press the push-pull quick clamp to fix the upper hot-seal knife. The lower hot-seal knife can be used with various models of upper hot-seal knives.

[0043] In summary, the quick-change blade horizontal sealing mechanism has a simple structure. The hot knife is installed on the upper crossbeam through the quick-change device, which facilitates quick assembly and disassembly. A support device is provided at the bottom of the lower crossbeam to improve the stability of the lower hot knife support.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A quick-change tool-changing horizontal sealing mechanism, characterized in that, The device includes a mounting bracket mounted on the frame of a bag-making machine, an upper horizontal sealing device and a lower horizontal sealing device mounted opposite to each other on the mounting bracket, and a first driving device and a second driving device respectively connected to the upper horizontal sealing device and the lower horizontal sealing device. The upper horizontal sealing device includes a drive beam and an upper crossbeam slidably mounted within the mounting bracket. The first driving device includes a servo motor, a drive shaft connected to the output shaft of the servo motor, and an eccentric connecting rod connected to the drive shaft. The bottom end of the eccentric connecting rod is hinged to the top end of the drive beam. A hot-blade cylinder connected to the upper crossbeam is disposed within the drive beam. An upper hot-blade is disposed at the bottom of the upper crossbeam via several quick-change devices.

2. The quick-change tool-changing transverse sealing mechanism according to claim 1, characterized in that: The quick-change device includes a clamp mounting plate disposed on the side wall of the upper crossbeam, clamping plates respectively disposed on both sides of the clamp mounting plate, pressure claws hinged between the two clamping plates, and a push-pull quick clamp for driving the pressure claws.

3. The quick-change tool-changing transverse sealing mechanism according to claim 1, characterized in that: The end of the drive shaft opposite to the servo motor is connected to a sensing plate, and a sensor corresponding to the sensing plate is provided in the mounting bracket.

4. The quick-change tool-changing transverse sealing mechanism according to claim 1, characterized in that: The two ends of the drive beam and the upper crossbeam are respectively connected to the inner wall of the mounting bracket via the first guide rail.

5. The quick-change tool-changing transverse sealing mechanism according to claim 1, characterized in that: The piston rod of the hot knife cylinder is connected to the upper crossbeam via a floating joint.

6. The quick-change tool-changing transverse sealing mechanism according to claim 1, characterized in that: An upper heating plate and an upper heat insulation plate are sequentially arranged between the upper heating blade and the upper crossbeam.

7. The quick-change tool-changing transverse sealing mechanism according to claim 1, characterized in that: The lower horizontal sealing device includes a lower horizontal beam slidably disposed within the mounting bracket and a lower hot knife disposed at the top of the lower horizontal beam. The second driving device includes a lifting cylinder, and its piston rod is connected to the lower horizontal beam.

8. The quick-change tool-changing transverse sealing mechanism according to claim 7, characterized in that: A lower heating plate and a lower heat insulation plate are sequentially arranged between the lower hot knife and the lower crossbeam.

9. The quick-change tool-changing transverse sealing mechanism according to claim 7, characterized in that: A silicone pad is provided at the top of the lower heating blade.

10. The quick-change tool transverse sealing mechanism according to claim 7, characterized in that: Support devices are provided at both ends between the lower crossbeam and the bottom wall of the mounting bracket. The support device includes a fixed pad fixed to the bottom wall of the mounting bracket and a sliding pad sliding on the top surface of the fixed pad. A pad cylinder is connected to one side of the sliding pad, and an avoidance groove corresponding to the sliding pad is recessed at the bottom of the lower crossbeam.

Images