Friction hot melting device for packing belt

Abstract

The utility model discloses a packing belt friction hot melting device and belongs to the technical field of packing machines. Which comprises a welding mechanism (15), a driving motor is connected with a vibrator in the welding mechanism (15) through a transmission mechanism, the welding mechanism (15) and the driving motor are both connected with a rack in a lifting mode, and is characterized in that the driving motor is a servo motor (10) and is provided with a first driving assembly and a second driving assembly, the welding mechanism (15) is connected with the rack through the first driving assembly, and the welding mechanism (15) is connected with the rack through the second driving assembly. The servo motor (10) is connected with the rack through a second driving assembly, a lifting synchronizing mechanism is further arranged, one part of the lifting synchronizing mechanism is connected with the welding mechanism (15) or the first driving assembly, and the other part of the lifting synchronizing mechanism is connected with the servo motor (10) or the second driving assembly. According to the friction hot melting device for the packing belt, the first driving assembly and the second driving assembly are connected through the lifting synchronizing mechanism, synchronous lifting of the welding mechanism and the servo motor (10) is achieved, and the friction hot melting device is more stable and reliable.

Description

Technical Field

[0001] A friction heat fusion device for a packing belt belongs to the technical field of packing machines. Background Art

[0002] During the transportation and transfer of goods, the most common way is to pack the scattered goods into a whole by a binding belt to prevent the goods from scattering and being damaged. After the goods are packed, the end of the packing belt needs to be fixed. Currently, the friction welding type packing machine is a relatively common way on the market. The traditional friction welding type packing machine realizes the fixation of the end of the packing belt through the friction heat fusion device therein.

[0003] The friction heat fusion device includes a motor and a welding mechanism. A vibrator is arranged in the welding mechanism, and a friction block is arranged at the bottom of the vibrator. When welding is required, the friction heat fusion device is driven by a lifting drive mechanism (generally a cylinder) to descend. At this time, the welding mechanism moves to the welding position. The motor drives the vibrator to perform high-frequency vibration through an eccentric shaft, so as to drive the packing belt to realize friction welding (such as the technical solution disclosed in the Chinese utility model patent with the application number 201920153788.8, the application date of January 29, 2019, and the patent name of "A Welding Mechanism and a Packing Machine for a Packing Machine"). After the welding is completed, the friction heat fusion device is driven by the lifting drive mechanism to rise to the initial position.

[0004] In the friction heat fusion devices including the above-mentioned prior art, although it is generally recorded that the motor can be an air motor or an electric motor, in commercially available products, air motors are generally used. The reason is that air motors are more conducive to achieving the vibration frequency required for the vibrator to perform welding. However, the disadvantage of using an air motor is that an air supply system including a compressor needs to be equipped for the packing machine. Therefore, the system is relatively complex and the cost is relatively high. Moreover, when the temperature is relatively low in winter, the pressure of the air supply system is unstable, resulting in the friction heat fusion device being unable to work properly.

[0005] The applicant of the present application found through experiments that when the motor is an electric motor, there are still problems: when realizing the lifting of the friction heat fusion device, if a single set of lifting drive mechanism is used to drive the motor and the vibrator to lift at the same time, due to the large number of components, the reliability is relatively poor. When multiple sets of lifting drive mechanisms are used to drive the motor and the vibrator to lift respectively, it is difficult to ensure the lifting synchronization of the motor and the vibrator. Therefore, designing a technical solution that can use an electric motor as the power source of the vibrator and can stably and reliably realize the lifting of the friction heat fusion device has become an urgent problem to be solved in the art. Summary of the Utility Model

[0006] The technical problem to be solved by the present utility model is: to overcome the deficiencies of the prior art and provide a friction heat melting device for packing belts, which drives the welding mechanism and the servo motor to lift respectively through a first driving component and a second driving component, and the first driving component and the second driving component are connected by a lifting synchronization mechanism, realizing the synchronous lifting of the welding mechanism and the servo motor, and making the friction heat melting device more stable and reliable.

[0007] The technical solution adopted by the present utility model to solve its technical problems is: the friction heat melting device for packing belts includes a welding mechanism, a driving motor is arranged on the side of the welding mechanism, the driving motor is connected to a vibrator in the welding mechanism through a transmission mechanism, and both the welding mechanism and the driving motor can be lifted and are connected to the frame. Its characteristics are: the driving motor is a servo motor, a first driving component and a second driving component are provided, the welding mechanism is connected to the frame through the first driving component, the servo motor is connected to the frame through the second driving component, and a lifting synchronization mechanism is also provided. One part of the lifting synchronization mechanism is connected to the welding mechanism or the first driving component, and the other part of the lifting synchronization mechanism is connected to the servo motor or the second driving component.

[0008] Preferably, the first driving component includes a first lifting cylinder, the welding mechanism is fixed at the piston rod of the first lifting cylinder, the lifting synchronization mechanism is fixed on the side of the welding mechanism or at the piston rod of the first lifting cylinder and extends to the second driving component.

[0009] Preferably, the second driving component includes a second lifting cylinder and a lifting plate group that slides vertically along the frame, the piston rod of the second lifting cylinder is connected to the lifting plate group; the servo motor is installed on the side of the lifting plate group.

[0010] Preferably, the lifting synchronization mechanism is a synchronous rod horizontally fixed on the side of the welding mechanism, and an adjusting rod protrudes from the end of the synchronous rod and extends to the second driving component.

[0011] Preferably, the lifting plate group includes a translation plate and a lifting plate, the bottom of the translation plate and the top of the lifting plate form an intersection, the transmission mechanism is a synchronous belt mechanism, and a tensioning mechanism for tensioning the synchronous belt in the synchronous belt mechanism is arranged at the intersection.

[0012] Preferably, the synchronous rod is arranged to slide relative to the second driving component, and the sliding direction is parallel to the tensioning direction of the tensioning mechanism.

[0013] Preferably, the tensioning mechanism includes a plurality of long strip-shaped adjusting grooves opened on the surface of the translation plate, threaded holes corresponding to the adjusting grooves one by one are opened on the lifting plate, and a fastening bolt passes through the adjusting groove and is screwed into the corresponding threaded hole; an adjusting block is also arranged on the side of the lifting plate, and an adjusting bolt passes through the adjusting block and is threadedly connected to the translation plate.

[0014] Preferably, guide rails are provided on the sides of the frame, and the lifting plate group is slidably connected to the frame through the guide rails.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In this friction hot-melting device for packing belts, the welding mechanism and the driving motor are respectively driven to lift by the first driving component and the second driving component, and the first driving component and the second driving component are connected by a lifting synchronization mechanism, realizing the synchronous lifting of the welding mechanism and the driving motor, making the friction hot-melting device more stable and reliable.

[0017] In this friction hot-melting device for packing belts, by providing a tensioning mechanism, the synchronous belt in the synchronous belt mechanism is kept in a tensioned state, improving the transmission efficiency and reliability.

[0018] The adjustment groove in the tensioning mechanism is strip-shaped, providing an adjustment margin during adjustment. Description of the Drawings

[0019] Figure 1 It is an axonometric view of the friction hot-melting device for packing belts.

[0020] Figure 2 It is a front view of the friction hot-melting device for packing belts.

[0021] Figure 3 It is Figure 2 The enlarged view of part A in

[0022] Wherein: 1, main frame; 2, first lifting cylinder; 3, side plate; 4, synchronous rod; 5, cylinder support; 6, second lifting cylinder; 7, synchronous belt mechanism; 8, fixed frame; 9, translation plate; 10, servo motor; 11, adjustment block; 12, lifting plate; 13, guide rail; 14, bushing; 15, welding mechanism; 16, driving pulley; 17, adjustment groove; 18, adjustment bolt; 19, fastening bolt; 20, adjustment rod; 21, opening; 22, synchronous belt; 23, driven pulley. Detailed Embodiment

[0023] Figures 1 to 3 It is the best embodiment of the present utility model. The following further describes the present utility model in conjunction with the attached Figures 1 to 3 drawings.

[0024] As Figure 1 shown, a friction hot-melting device for packing belts includes a welding mechanism 15. A first lifting cylinder 2 is provided above the welding mechanism 15. The piston rod of the first lifting cylinder 2 is vertically downward, and the piston rod of the first lifting cylinder 2 is connected to the first lifting cylinder 2. The welding mechanism 15 is driven to lift by the first lifting cylinder 2.

[0025] The body of the first lifting cylinder 2 is fixed on the main frame 1 of the packing machine, and a side plate 3 is arranged on the side of the main frame 1. A cylinder support 5 is arranged on the upper part of the outer side surface of the side plate 3, and a second lifting cylinder 6 is fixed on the lower surface of the cylinder support 5. The piston rod of the second lifting cylinder 6 is vertically downward, and a fixing frame 8 is installed at the end of the piston rod of the second lifting cylinder 6. A translation plate 9 is fixed at the bottom of the fixing frame 8, and a lifting plate 12 is arranged at the bottom of the translation plate 9.

[0026] A guide rail 13 is arranged on the lower part of the outer side surface of the side plate 3, and the lifting plate 12 is slidably connected with the side plate 3 in the vertical direction through the guide rail 13. A servo motor 10 is installed on the side of the translation plate 9, and the motor shaft of the servo motor 10 penetrates through the translation plate 9 and faces the welding mechanism 15.

[0027] A bushing 14 is arranged on the side of the welding mechanism 15. An eccentric shaft is arranged in the bushing 14. The output end of the eccentric shaft passes through the shell of the welding mechanism 15 and is connected with the vibrator in the welding mechanism 15. The input end of the eccentric shaft extends out from the end of the bushing 14. The motor shaft of the servo motor 10 is connected with the eccentric shaft through a synchronous belt mechanism 7 after penetrating through the translation plate 9.

[0028] Combined with Figure 2 The bottom of the translation plate 9 and the top of the lifting plate 12 are arranged in an internal and external staggered manner, so that the translation plate 9 and the lifting plate 12 can slide back and forth in the horizontal direction. A plurality of adjustment slots 17 are formed on the surface of the translation plate 9. The adjustment slots 17 are long strip-shaped through slots penetrating through the translation plate 9. Threaded holes corresponding to the adjustment slots 17 one by one are formed on the surface of the lifting plate 12. The adjustment slots 17 and their corresponding threaded holes are both formed in the staggered area of the translation plate 9 and the lifting plate 12.

[0029] An adjustment block 11 is arranged at the end of the staggered area of the translation plate 9 and the lifting plate 12. The adjustment block 11 is fixed to the lifting plate 12 and is arranged opposite to the translation plate 9. An adjustment bolt 18 is arranged at the rear of the adjustment block 11. After passing through the adjustment block 11, the adjustment bolt 18 is screwed into the translation plate 9, and the adjustment bolt 18 is threadedly connected with the translation plate 9. A spring is sleeved outside the adjustment bolt 18. The spring is located between the translation plate 9 and the adjustment block 11. By rotating the adjustment bolt 18, the front and rear positions of the translation plate 9 and the lifting plate 12 can be adjusted. During the adjustment process, the long strip-shaped adjustment slots 17 provide a moving margin for the translation plate 9, and after adjusting to the appropriate position, the translation plate 9 and the lifting plate 12 are locked by a fastening bolt 19.

[0030] Combined with Figure 3, the synchronous belt mechanism 7 includes a driving pulley 16 installed at the motor shaft of the servo motor 10 and a driven pulley 23 installed at the end of the eccentric shaft. The driving pulley 16 and the driven pulley 23 are connected by a synchronous belt 22. A synchronous rod 4 is also horizontally fixed on the side of the housing of the welding mechanism 15. The end of the synchronous rod 4 horizontally extends to the side of the translation plate 9. A horizontal protrusion is provided on the side of the translation plate 9, and an opening 21 is formed in the horizontal protrusion. An adjusting rod 20 is also horizontally provided at the end of the synchronous rod 4, and the adjusting rod 20 enters the opening 21. Since the opening 21 is horizontally arranged, it provides an adjustment margin when adjusting the front and rear positions of the translation plate 9 and the lifting plate 12.

[0031] In this friction hot melting device for packing belts, the servo motor is realized by a servo motor with a braking function, and the synchronous belt mechanism 7 adopts a speed increasing mechanism, in which the tooth number ratio of the driving pulley 16 to the driven pulley 23 is 68:14. In this field, to realize the welding of the packing belt, the vibration frequency of the vibrator in the welding mechanism 15 is above 10,000 times per minute. In this moving packing machine head, when the rotational speed of the servo motor 10 is about 3,000 revolutions per minute, it can meet the welding requirements of the vibrator. And it can be known from experiments that when realizing the welding of the packing belt, the shorter the welding time, the better the welding effect. Therefore, through the servo motor 10 and the synchronous belt mechanism 7 with the above parameter settings, the vibrator can reach the peak value of its vibration frequency in the shortest time and start welding. After welding, the instantaneous stop can be realized through the braking function of the servo motor 10 itself, shortening the welding time and ensuring the welding effect.

[0032] For the traditional driving methods, whether it is an electric motor or a pneumatic motor, they are all high-speed motors. When the vibration frequency of the vibrator rises (starting to weld) and falls (completing welding), it all takes a certain amount of time, especially in the process of the vibrator stopping swinging. Therefore, the welding time is increased, and it is difficult to achieve the welding effect of this friction hot melting device for packing belts.

[0033] The specific working process and working principle are as follows:

[0034] When welding is required, the piston rods of the first lifting cylinder 2 and the second lifting cylinder 6 output simultaneously, driving the welding mechanism 15 and the servo motor 10 to descend, so that the welding mechanism 15 descends to the welding station. The servo motor 10 works, and at this time, the vibrator in the welding mechanism 15 is driven to vibrate at a high speed through the synchronous belt mechanism 7 to realize the welding of the packing belt. After welding is completed, the piston rods of the first lifting cylinder 2 and the second lifting cylinder 6 reset simultaneously, driving the welding mechanism 15 and the servo motor 10 to rise to the dehumidification station. During the lifting process of the servo motor 10, under the guiding action of the guide rail 13, the translation plate 9 and the lifting plate 12 lift and lower synchronously along the side plate 3.

[0035] During the above working process of the first lifting cylinder 2 and the second lifting cylinder 6, since the synchronizing rod 4 is arranged on the side of the welding mechanism 15 and the end of the synchronizing rod 4 is inserted into the opening 21 of the translation plate 9, the synchronous lifting of the welding mechanism 15 and the servo motor 10 is realized through the synchronizing rod 4.

[0036] After working for a period of time, if the synchronous belt 22 becomes loose, after stopping the machine, first rotate the fastening bolt 19 to release the locking state between the translation plate 9 and the lifting plate 12, and then rotate the adjusting bolt 18 to make the translation plate 9 and the lifting plate 12 translate, so that the synchronous belt 22 is tensioned. After adjusting to the appropriate position, lock the translation plate 9 and the lifting plate 12 again by rotating the fastening bolt 19.

[0037] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A friction hot-melting device for a packing belt, comprising a welding mechanism (15). A driving motor is arranged on the side of the welding mechanism (15). The driving motor is connected to a vibrator in the welding mechanism (15) through a transmission mechanism. The welding mechanism (15) and the driving motor are both connected to the frame in a liftable manner. It is characterized in that: The driving motor is a servo motor (10), which is provided with a first driving component and a second driving component. The welding mechanism (15) is connected to the frame through the first driving component, and the servo motor (10) is connected to the frame through the second driving component. A lifting synchronization mechanism is also provided. One part of the lifting synchronization mechanism is connected to the welding mechanism (15) or the first driving component, and the other part of the lifting synchronization mechanism is connected to the servo motor (10) or the second driving component.

2. The friction hot-melting device for the packing belt according to claim 1, wherein: The first driving component includes a first lifting cylinder (2). The welding mechanism (15) is fixed at the piston rod of the first lifting cylinder (2). The lifting synchronization mechanism is fixed at the side of the welding mechanism (15) or the piston rod of the first lifting cylinder (2) and extends to the second driving component.

3. The friction hot melting device for packing belts according to claim 1 or 2, characterized in that: The second driving component includes a second lifting cylinder (6) and a lifting plate group that slides vertically along the frame. The piston rod of the second lifting cylinder (6) is connected to the lifting plate group; the servo motor (10) is installed at the side of the lifting plate group.

4. The friction hot-melting device for the packing belt according to claim 2, wherein: The lifting synchronization mechanism is a synchronizing rod (4) horizontally fixed at the side of the welding mechanism (15). An adjusting rod (20) is protrudingly provided at the end of the synchronizing rod (4), and the adjusting rod (20) extends to the second driving component.

5. The friction hot-melting device for the packing belt according to claim 3, wherein: The lifting plate group includes a translation plate (9) and a lifting plate (12). The bottom of the translation plate (9) and the top of the lifting plate (12) are staggered to form a staggered part. The transmission mechanism is a synchronous belt mechanism (7). A tensioning mechanism for tensioning the synchronous belt (22) in the synchronous belt mechanism (7) is provided at the staggered part.

6. The friction hot-melting device for the packing belt according to claim 4, wherein: The synchronizing rod (4) is arranged to slide relative to the second driving component, and the sliding direction is parallel to the tensioning direction of the tensioning mechanism.

7. The friction heat melting device for the packing belt according to claim 5, wherein: The tensioning mechanism includes a plurality of long strip-shaped adjusting grooves (17) opened on the surface of the translation plate (9). Threaded holes corresponding to the adjusting grooves (17) one by one are opened on the lifting plate (12). A fastening bolt (19) passes through the adjusting groove (17) and is screwed into the corresponding threaded hole; an adjusting block (11) is further provided at the side of the lifting plate (12). An adjusting bolt (18) passes through the adjusting block (11) and is threadedly connected to the translation plate (9).

8. The friction heat fusion device for the packing belt according to claim 3, characterized in that: A guide rail (13) is provided at the side of the frame. The lifting plate group is slidably connected to the frame through the guide rail (13).

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