An ultrasonic sealing apparatus and method

Abstract

The application discloses an ultrasonic sealing device and a sealing method. The ultrasonic sealing device is electrically connected with an ultrasonic controller. The ultrasonic sealing device comprises a welding head, an ultrasonic transducer, a first clamping piece and a second clamping piece which are movably connected with each other, a driving piece for driving the first clamping piece and the second clamping piece to move, and a triggering device for triggering the high-frequency working mode of the welding head. The first clamping piece and the second clamping piece are connected with each other and are provided with a device fixing position for clamping a device. When the first clamping piece and the second clamping piece move, the volume of the device fixing position is reduced or restored. Under the action of the driving piece, the device fixing position is reduced to clamp the device in the device fixing position. Then, the continuous driving of the driving piece can make the triggering device conductive, and the welding head starts the high-frequency working mode. When the driving piece stops working, all the components are reset. The application further discloses a sealing method using the above ultrasonic sealing device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ultrasonic sealing, in particular to an ultrasonic sealing device and a sealing method. BACKGROUND

[0002] Ultrasonic welding technology has many advantages such as high strength, high sealing, high speed and precise welding, and is now widely used in the welding field. In the welding field, the sealing of the end of the device is obviously different from other types of welding, so special equipment is needed for sealing.

[0003] The existing ultrasonic sealing device, such as the ultrasonic sealing device disclosed in Chinese Patent Publication No. CN107128543A, includes a sealing transmission mechanism, a sealing part fixing mechanism, a bag opening guide mechanism, a sealing tooth seat, a sealing tooth action mechanism, an ultrasonic wave generating mechanism, and a sealing tooth. The sealing part fixing mechanism is sleeved outside the sealing transmission mechanism, the bag opening guide mechanism is fixed in the middle of the sealing part fixing mechanism, the sealing tooth seat is fixed at the top end of the sealing part fixing mechanism, the sealing tooth is fixed at the bottom side of the end of the sealing tooth seat, the sealing tooth action mechanism is fixed on the sealing tooth seat, and the ultrasonic wave generating mechanism is fixed on the side of the sealing tooth seat. The sealing transmission mechanism includes a cylinder action mechanism and a pull rod mechanism. The bag opening guide mechanism includes a fixed mechanism and a guide rod, and the fixed mechanism is provided with a long hole. The sealing tooth action mechanism includes a rocker and a sealing tooth fixing piece, one end of the rocker is connected with the pull rod mechanism, the other end is connected with the sealing tooth fixing piece, and the middle part is fixed on the sealing tooth seat. The sealing tooth is fixed on the sealing tooth fixing piece. The ultrasonic wave generating mechanism is connected with the sealing tooth through a wire.

[0004] However, the above-mentioned patent disclosed ultrasonic sealing device has the problems of large overall structure, inconvenience of operation, poor stability of the entire sealing device, and inability to effectively stabilize the device to be sealed by the structure of the device. In addition, the sealing quality is largely dependent on the proficiency of the operator, so the sealing quality is difficult to unify. SUMMARY

[0005] To solve the problems in the prior art, the present application provides an ultrasonic sealing device and a sealing method.

[0006] An ultrasonic sealing device, the ultrasonic sealing device is electrically connected with an ultrasonic controller, the ultrasonic sealing device includes a welding head for welding and sealing a device, and an ultrasonic transducer fixed with the welding head and electrically connected with the ultrasonic controller, further includes a first clamping piece and a second clamping piece movably connected with each other, a driving piece for driving the first clamping piece and the second clamping piece to move relative to each other, and a triggering device for triggering the high-frequency working mode of the welding head, the first clamping piece and the second clamping piece movably connected with each other form a device fixing part for clamping the device.

[0007] When the first clamping member and the second clamping member move relative to each other, the volume of the device fixing portion decreases or restores;

[0008] Under the driving of the driving member, the device fixing portion decreases to clamp the device, and then the continuous driving of the driving member can make the trigger device conductive to open the high-frequency working mode of the welding head;

[0009] During the clamping and welding of the device, the driving member is continuously driven, and after the welding is completed, the driving member stops driving, and then all the components are reset.

[0010] Specifically, when the driving member is started, the components start to work in sequence, and the working order is to clamp the device first and then start to weld the device. Between the two steps of clamping the device and welding the device, the operator will have obvious actions. This structure simplifies the operation difficulty and makes the controllability of the whole process higher. When the driving member stops driving, all the components are reset (including the driving member itself), without the need to reset the step, which simplifies the operation process and improves the welding efficiency.

[0011] Preferably, the first clamping member and the second clamping member are connected by a first elastic member. When the first elastic member is compressed, the volume of the device fixing portion decreases, and when the first elastic member rebounds, the volume of the device fixing portion restores;

[0012] The second clamping member is connected to the driving member by a second elastic member. The trigger device includes a trigger block movably connected to the second clamping member and a detector electrically connected to the welding head. The trigger block and the detector are arranged apart from each other. When the trigger block and the detector come into contact with each other, the trigger device is conductive. When the second elastic member is compressed, the trigger block and the detector approach each other;

[0013] The first elastic member and the second elastic member are parallel to each other, and the elastic coefficient of the first elastic member is less than that of the second elastic member;

[0014] When the driving member operates, the first elastic member and the second elastic member are compressed in sequence, the volume of the device fixing portion decreases, and the trigger block and the detector approach each other. When the driving member stops driving, the second elastic member and the first elastic member rebound in sequence, the trigger block and the detector move away from each other, and the volume of the device fixing portion restores.

[0015] Specifically, since the first elastic member and the second elastic member are arranged in parallel with each other, and the first elastic member and the second elastic member are both connected with the second clamping member, when the driving member applies force in the direction of compressing the second elastic member, due to the transmissibility of the force, the first elastic member will also be subjected to the same pressure, and since the elastic coefficient of the first elastic member is smaller than that of the second elastic member, the first elastic member is always compressed first, and then the pressure is increased to compress the second elastic member, that is, the working sequence of first clamping and then welding and sealing (i.e. triggering the high-frequency working mode of the welding head) is realized. Also, since the elastic coefficient of the first elastic member is smaller than that of the second elastic member, when the driver stops applying pressure (i.e. stops driving), the rebound force of the second elastic member will be greater than that of the first elastic member, so the second elastic member always rebounds first, that is, the working mode of first stopping welding and sealing and then releasing the device is realized.

[0016] Preferably, the driving member comprises a handle and a pushing member movably connected with each other, one end of the handle is hingedly connected with the first clamping member, the pushing member is movably connected with the second clamping member and abuts against the second elastic member, the trigger block is fixed on the pushing member, and the detector is arranged on the side of the trigger block away from the pushing member.

[0017] When the handle moves towards the second clamping member, the second clamping member compresses the first elastic member to cause the volume of the device fixing part to decrease, and the pushing member compresses the second elastic member to cause the trigger block to move towards the detector; when the handle moves away from the second clamping member, the second elastic member rebounds, the trigger block moves away from the detector, the first elastic member rebounds, and the volume of the device fixing part returns to normal.

[0018] Specifically, the structure of the handle makes it more convenient to control the movement of the driving member. Pressing the handle towards the direction of the second clamping member starts the work of the ultrasonic sealing device, and releasing the handle stops the work of the ultrasonic sealing device.

[0019] Preferably, the pushing member comprises a pushing block and a transmission rod, and the two ends of the transmission rod are hingedly connected with the handle and the pushing block, respectively.

[0020] The second clamping member is further provided with a second guide device, the pushing block and the second elastic member are both sleeved on the second guide device, and one end of the pushing block abuts against the second elastic member.

[0021] Preferably, a first guide device is further included, the first guide device is arranged between the first clamping member and the second clamping member, and the first guide device is used to control the direction of mutual movement of the first clamping member and the second clamping member.

[0022] Specifically, the structure of the first guide device can ensure that the first clamp and the second clamp move relative to each other in a fixed direction; the structure of the second guide device can ensure that the second clamp and the pushing block move relative to each other in a fixed direction; that is, the first guide device and the second guide device ensure the stability of the movement between the first clamp, the second clamp and the pushing block.

[0023] Preferably, the device fixing portion comprises a pressing member and a fixing member arranged on the first clamp and the second clamp respectively, the fixing member is provided with a receiving groove for accommodating the lateral opening of the device, and the pressing member is arranged on one side of the opening of the receiving groove and is arranged away from the fixing member.

[0024] When the driving member drives the first clamp and the second clamp to move relative to each other, the pressing member and the fixing member move towards each other or move away from each other.

[0025] Specifically, when clamping the device, the device is first placed in the device fixing portion, and the fixing member and the pressing member are arranged on the two sides of the device, and the handle is moved towards the second clamp, so that the fixing member and the pressing member move towards each other (the volume of the device fixing portion is reduced) until the device is clamped.

[0026] Preferably, the device further comprises a limiting member, the limiting member comprises a baffle arranged on the first clamp and a stopper arranged on the second clamp, and the highest point of the stopper is higher than the lowest point of the baffle.

[0027] The stopper comprises a first stopper and a second stopper arranged on opposite sides of the baffle, when the first stopper abuts against the baffle, the volume of the device fixing portion is smallest, and when the second stopper abuts against the baffle, the volume of the device fixing portion is largest; the positions of the first stopper and the second stopper on the second clamp are adjustable.

[0028] Specifically, after the first stopper abuts against the baffle, the volume of the device fixing portion cannot be reduced any more, and greater pressure applied to the handle will cause the second elastic member to be compressed, and this structure can ensure that the pressure received by devices of the same size when being fixed is always the same, thereby making the consistency of the welding sealing quality better; the structure of the second stopper can prevent the first clamp and the second clamp from being accurately reset during the rebound of the first elastic member, and can prevent the displacement from being too large due to the rebound force being too large.

[0029] The positions of the first stopper and the second stopper on the second clamp can be adjusted according to the size of the device, that is, the ultrasonic sealing device provided by the present application can be applied to devices of various sizes, and at the same time, the welding sealing quality of devices of the same size can have higher consistency.

[0030] Preferably, the second clamping member is provided with a first mounting groove and a second mounting groove, the first stopper is mounted on the first mounting groove by a first fastener, and the second stopper is mounted on the second mounting groove by a second fastener.

[0031] When the first fastener and the second fastener are in a tightened state, the positions of the first stopper and the second stopper on the first mounting groove and the second mounting groove are fixed; when the first fastener and the second fastener are in a non-tightened state, the first stopper and the second stopper can slide in the first mounting groove and the second mounting groove.

[0032] Specifically, in this structure, the positions of the first stopper and the second stopper are adjusted conveniently and quickly, and the positions of the first stopper and the second stopper are stable after the first fastener and the second fastener are tightened, and the first stopper and the second stopper are not easily moved.

[0033] Preferably, the welding head is arranged at the device fixing portion, and the welding head is provided with a welding chamfer, and the angle of the chamfer is 40°-50°.

[0034] Specifically, the structure of arranging the chamfer on the welding head can reduce the planar contact area of the welding head and the device, and at the same time, the gas is discharged through the gap between the device and the chamfer, so that the damage of the non-welding surface is reduced.

[0035] An ultrasonic sealing method of an ultrasonic sealing device, the ultrasonic sealing method comprises the following steps:

[0036] S1 selecting a device to be welded and sealed, setting corresponding voltage and frequency on the ultrasonic controller according to the size and material of the device, so that the high-frequency working mode of the welding head at the voltage and frequency can melt the material of the device to be welded and sealed;

[0037] S2 placing the device on the device fixing portion, and using the driver to make the first clamping member and the second clamping member move towards each other until the device fixing portion clamps the device;

[0038] S3 contacting the clamped device with the welding head, maintaining the clamping state of the device, and further driving the driver until the trigger device triggers the high-frequency working mode of the welding head, in the high-frequency working mode of the welding head, the local part of the device will be subjected to self-to-self friction, and the high temperature generated by the self-to-self friction will melt the local material of the device;

[0039] S4 after the local material of the device is melted, the high-frequency working mode of the welding head is stopped, and the device is continuously clamped until the melted material is solidified;

[0040] S5 stopping the driver, resetting each component, releasing the device, accelerating the cooling and solidification of the solidified material, and completing the welding and sealing.

[0041] Specifically, the welding head in high frequency working mode will vibrate, the pressure on the clamped device combined with the friction force generated by the high frequency vibration of the welding head will cause the local part of the device to generate ultra-high resistance, and then the device itself will rub against itself, the high temperature generated by the friction of the device itself will melt the material of the device, and then the melted material will be fused together. The ultrasonic controller sets the voltage and frequency (high frequency and high voltage state) of the external voltage, the ultrasonic transducer converts the high frequency and high voltage into mechanical energy vibration, and the vibration of the ultrasonic transducer will vibrate the welding head, so that different voltages and frequencies are set on the ultrasonic controller to adjust the vibration frequency of the welding head.

[0042] Preferably, the ultrasonic controller can also set the time of the high frequency working mode of the welding head.

[0043] Specifically, when the high frequency working mode of the welding head reaches the specified time, even if the trigger block is still in contact with the detector, the high frequency working mode of the welding head will stop; if the trigger block is separated from the detector, but the high frequency working mode of the welding head has not reached the specified time, the high frequency working mode of the welding head will also stop.

[0044] Compared with the prior art, the present application has the following advantages:

[0045] (1) The structure of the ultrasonic sealing device is designed as a two-stage control structure, that is, under the driving of the driver, the ultrasonic sealing device first clamps the device and then starts the high frequency working mode of the welding head to melt the device material. This structure makes the whole welding and sealing process more controllable and the operation more convenient.

[0046] (2) The first clamping piece and the second clamping piece are movably connected by the first elastic piece, the second clamping piece and the driving piece are movably connected by the second elastic piece, the first elastic piece and the second elastic piece are arranged in parallel, and the elastic coefficient of the first elastic piece is smaller than that of the second elastic piece. The structure ensures that when subjected to pressure in the same direction, the device fixing part will first shrink, and then the trigger block and the detector will approach each other, and when the pressure disappears, the trigger block and the detector will first move away from each other, and then the device fixing part will recover. By controlling the pressure to be greater than the rebound force of the first elastic piece and smaller than the rebound force of the second elastic piece, the device fixing part can be shrunk while the trigger block and the detector remain apart. That is, this structure allows the operator to consciously adjust the pressure to adjust the working state of the ultrasonic sealing device.

[0047] (3) The structure of baffle and first stop is set so that when the ultrasonic sealing equipment is used for devices of the same size, the pressure applied to the device during clamping is the same. That is, the pressure borne by the clamped device is not related to the pressure applied by the operator, which effectively improves the consistency of welding sealing quality of devices of the same size.

[0048] (4) The structure of setting baffle and second stop can effectively prevent the failure of the relative movement between the components from being too large and unable to be accurately reset due to the excessive rebound force of the first elastic element and / or the second elastic element. Attached Figure Description

[0049] Figure 1 This is an overall schematic diagram of the ultrasonic sealing device provided by the present invention;

[0050] Figure 2 A schematic diagram of the internal structure of the ultrasonic sealing device provided by the present invention;

[0051] Figure 3 A schematic diagram of the structure of the first clamping component of the ultrasonic sealing device provided by the present invention;

[0052] Figure 4 This is a schematic diagram of the structure of the second clamp of the ultrasonic sealing device provided by the present invention;

[0053] Figure 5 A schematic diagram of the working state of the ultrasonic sealing device provided by the present invention (excluding the housing). Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0055] like Figures 2-5 As shown, the ultrasonic sealing device is electrically connected to an ultrasonic controller. The ultrasonic sealing device includes a welding head 70 for welding and sealing a device 80, an ultrasonic transducer fixed to the welding head 70 and electrically connected to the ultrasonic controller, a first clamp 10 and a second clamp 20 movably connected to each other, a driving member for driving the first clamp 10 and the second clamp 20 to move relative to each other, and a triggering device for triggering the high-frequency working mode of the welding head 70. The first clamp 10 and the second clamp 20 are connected to each other and form a device fixing point for clamping the device 80.

[0056] When the first clamp 10 and the second clamp 20 move relative to each other, the volume of the fixed part of the device decreases or returns to its original size.

[0057] Driven by the driving component, the device fixing point is reduced to clamp the device 80 placed at the device fixing point. Subsequently, the continuous driving of the driving component enables the trigger device to turn on the welding head 70 to start the high-frequency working mode.

[0058] In the process of clamping and welding sealing of the device 80, the driving member continuously drives, and after the welding sealing is completed, the driving member stops driving, and then all the components are reset.

[0059] When the driving member is started, the components start to work in sequence, and the working order is to clamp the device 80 first and then start the welding sealing of the device 80. Between the two steps of clamping the device 80 and welding sealing the device 80, the operator will have obvious actions. This structure simplifies the operation difficulty and makes the controllability of the whole process higher. When the driving member stops driving, all the components are reset (including the driving member itself), without the need to perform the resetting step, which simplifies the operation process and improves the welding sealing efficiency.

[0060] The first clamping member 10 and the second clamping member 20 are connected through the first elastic member 61. When the first elastic member 61 is compressed, the volume of the device fixing part is reduced. When the first elastic member 61 rebounds, the volume of the device fixing part is restored.

[0061] The second clamping member 20 is connected with the driving member through the second elastic member 62. The trigger device includes a trigger block 41 movably connected with the second clamping member 20 and a detector 42 electrically connected with the welding head 70. The trigger block 41 is arranged away from the detector 42. When the trigger block 41 and the detector 42 come into contact with each other, the trigger device is turned on. When the second elastic member 62 is compressed, the trigger block 41 and the detector 42 are close to each other.

[0062] The first elastic member 61 and the second elastic member 62 are parallel to each other, and the elastic coefficient of the first elastic member 61 is smaller than that of the second elastic member 62.

[0063] When the driving member is actuated, the first elastic member 61 and the second elastic member 62 are compressed in sequence, the volume of the device fixing part is reduced, and the trigger block 41 and the detector 42 are close to each other. When the driving member stops driving, the second elastic member 62 and the first elastic member 61 rebound in sequence, the trigger block 41 and the detector 42 are away from each other, and the volume of the device fixing part is restored.

[0064] Since the first elastic member 61 and the second elastic member 62 are arranged in parallel to each other and both are connected with the second clamping member 20, when the driving member applies force in the direction of compressing the second elastic member 62, the first elastic member 61 will also be compressed due to the transmissibility of force. Since the elastic coefficient of the first elastic member 61 is smaller than that of the second elastic member 62, the first elastic member 61 will be compressed first and then the second elastic member 62 will be compressed when the pressure is increased, i.e. the working sequence of first clamping and then welding (i.e. triggering the high-frequency working mode of the welding head 70) is realized. Since the elastic coefficient of the first elastic member 61 is smaller than that of the second elastic member 62, the elastic force of the second elastic member 62 will be greater than that of the first elastic member 61 when the driver stops applying pressure (i.e. stops working), so the second elastic member 62 will rebound first, i.e. the working mode of first stopping welding and then releasing is realized.

[0065] The driving member comprises a handle 31 and a pushing member which are movably connected with each other, one end of the handle 31 is hingedly connected with the first clamping member 10, the pushing member is movably connected with the second clamping member 20 and abuts against the second elastic member 62, the trigger block 41 is fixed on the pushing member, and the detector 42 is arranged on the side of the trigger block 41 away from the pushing member.

[0066] When the handle 31 moves towards the second clamping member 20, the second clamping member 20 compresses the first elastic member 61, resulting in a decrease in the volume of the device fixing part, and the pushing member compresses the second elastic member 62, causing the trigger block 41 to move towards the detector 42. When the handle 31 moves away from the second clamping member 20, the second elastic member 62 rebounds, the trigger block 41 moves away from the detector 42, the first elastic member 61 rebounds, and the volume of the device fixing part returns to normal.

[0067] The structure of the handle 31 makes it more convenient to control the movement of the driving member. Pressing the handle 31 towards the second clamping member 20, the ultrasonic sealing device starts working, and releasing the handle 31, the ultrasonic sealing device stops working.

[0068] The pushing member comprises a pushing block 33 and a transmission rod 34, both ends of the transmission rod 34 are hingedly connected with the handle 31 and the pushing block 33, respectively.

[0069] The second clamping member 20 is also provided with a second guide device 64, the pushing block 33 and the second elastic member 62 are sleeved on the second guide device 64, and one end of the pushing block 33 abuts against the second elastic member 62.

[0070] The first guide device 63 is arranged between the first clamping member 10 and the second clamping member 20, and is used to control the direction of mutual movement of the first clamping member 10 and the second clamping member 20.

[0071] The structure of the first guide device 63 can ensure that the first clamp 10 and the second clamp 20 move relative to each other in a fixed direction; the structure of the second guide device 64 can ensure that the second clamp 20 and the push block 33 move relative to each other in a fixed direction; that is, the first guide device 63 and the second guide device 64 ensure the stability of the movement between the first clamp 10, the second clamp 20 and the push block 33.

[0072] The device fixing portion includes a pressing member 52 and a fixing member 51 arranged on the first clamp 10 and the second clamp 20 respectively, the fixing member 51 is provided with a receiving groove 53 for accommodating the lateral opening of the device 80, the pressing member 52 is arranged on one side of the opening of the receiving groove 53 and is arranged away from the fixing member 51,

[0073] When the driving member drives the first clamp 10 and the second clamp 20 to move relative to each other, the pressing member 52 and the fixing member 51 move towards or away from each other.

[0074] When the device 80 is clamped, the device 80 is first placed in the device fixing portion, and the fixing member 51 and the pressing member 52 are arranged on the two sides of the device 80, and the handle 31 is moved towards the second clamp 20, then the fixing member 51 and the pressing member 52 move towards each other (the volume of the device fixing portion is reduced) until the device 80 is clamped.

[0075] Further comprising a limiting member, the limiting member includes a baffle 91 arranged on the first clamp 10 and a stop member arranged on the second clamp 20, the highest point of the stop member is higher than the lowest point of the baffle 91;

[0076] The stop member includes a first stop member 92 and a second stop member 93 arranged on opposite sides of the baffle 91, when the first stop member 92 abuts against the baffle 91, the volume of the device fixing portion is smallest, when the second stop member 93 abuts against the baffle 91, the volume of the device fixing portion is largest; the positions of the first stop member 92 and the second stop member 93 on the second clamp 20 are adjustable.

[0077] When the first stop member 92 abuts against the baffle 91, the volume of the device fixing portion cannot be reduced any more, and greater pressure applied to the handle 31 will cause the second elastic member 62 to be compressed, this structure can ensure that the pressure received by the device 80 of the same size when being fixed is always the same, thereby making the consistency of the welding sealing quality better; the structure of the second stop member 93 can prevent the first clamp 10 and the second clamp 20 from being accurately reset during the rebound of the first elastic member 61, and can prevent the displacement from being too large due to the rebound force being too large;

[0078] The positions of the first stop 92 and the second stop 93 on the second clamp 20 can be adjusted according to the size of the device 80. That is, the ultrasonic sealing device provided in this embodiment can be applied to devices 80 of various sizes, and at the same time, it can ensure that the welding sealing quality of devices 80 of the same size has a high degree of consistency.

[0079] The second clamp 20 is provided with a first mounting groove 94 and a second mounting groove 95. The first stop 92 is mounted on the first mounting groove 94 by a first fastener, and the second stop 93 is mounted on the second mounting groove 95 by a second fastener.

[0080] When the first fastener and the second fastener are tightened, the first stop 92 and the second stop 93 are fixed in position on the first mounting groove 94 and the second mounting groove 95; when the first fastener and the second fastener are not tightened, the first stop 92 and the second stop 93 can slide within the first mounting groove 94 and the second mounting groove 95.

[0081] With this structure, the positions of the first stop 92 and the second stop 93 can be adjusted quickly and easily. After the first fastener and the second fastener are tightened, the positions of the first stop 92 and the second stop 93 are stable and will not easily move.

[0082] The welding head 70 is located at the device fixing point and has a welding chamfer with an angle of 40°-50°.

[0083] The chamfered structure on the welding head 70 can reduce the planar contact area between the welding head 70 and the device 80, while allowing gas to escape through the gap between the device 80 and the chamfer, thereby reducing damage to the non-welded surface.

[0084] In addition, such as Figure 1 As shown, the ultrasonic sealing device also includes a housing 81, with the handle 31, transmission rod 34, fixing member 51 and welding head 70 located outside the housing 81, and other components located inside the housing 81. This structure can effectively protect the internal structure of the ultrasonic sealing device, improve the service life of the ultrasonic sealing device and make it more suitable for container operation.

[0085] A sealing method using an ultrasonic sealing device, employing the ultrasonic sealing device provided in this embodiment, includes the following steps:

[0086] S1.1 Select the device 80 to be welded and sealed. According to the size and material of the device 80, set the corresponding voltage and frequency on the ultrasonic controller so that the high-frequency working mode of the welding head 70 under the voltage and frequency can melt the material of the device 80 to be welded and sealed. At the same time as setting the voltage and frequency on the ultrasonic controller, the time of the high-frequency working mode of the welding head 70 is also set.

[0087] S2.1 Place the device 80 in the device fixing place, press the handle 31 to move the handle 31 towards the direction of approaching the second clamp 20, the movement of the handle 31 applies pressure to the second clamp 20, the second clamp 20 compresses the first elastic member 61, the volume reduction of the device fixing place clamps the device 80, at this time the operator can clearly feel the jamming (because the baffle 91 and the first stopper 92 abut against each other);

[0088] S3.1 The clamped device 80 is in contact with the welding head 70, a greater force is applied to the handle 31, at this time the baffle 91 and the first stopper 92 abut against each other, so that the first clamp 10 and the second clamp 20 do not move relatively, but the pushing block 33 compresses the second elastic member 62, then the trigger block 41 and the detector 42 move towards each other until the trigger block 41 and the detector 42 are in contact, the high-frequency working mode of the welding head 70 is started, in the high-frequency working mode of the welding head 70, the local part of the device 80 will generate self-to-self friction, the high temperature generated by the self-to-self friction melts the local material of the device 80;

[0089] S4.1 After reaching the set high-frequency working mode time, the high-frequency working mode of the welding head 70 is stopped, if the operator judges that the melting is completed but the high-frequency working mode of the welding head 70 does not reach the specified time, the pressure applied to the handle 31 is reduced, so that the pressure is less than the rebound force of the second elastic member 62 is greater than the rebound force of the first elastic member 61, then the second elastic member 62 rebounds to separate the trigger block 41 and the detector 42, and further makes the high-frequency working mode of the welding head 70 stop; After the high-frequency working mode of the welding head 70 is stopped, the first elastic member 61 is still in the compressed state, and the device 80 is continuously clamped until the melted material is shaped;

[0090] S5.1 Release the handle 31, the device 80 is released, the shaped melted material accelerates cooling and solidification, and the welding seal is completed.

Claims

1. An ultrasonic sealing device, electrically connected to an ultrasonic controller, the ultrasonic sealing device comprising a welding head for welding and sealing devices, and an ultrasonic transducer fixed to the welding head and electrically connected to the ultrasonic controller, characterized in that, The first clamping member and the second clamping member are connected to each other, a driving member is arranged to drive the first clamping member and the second clamping member to move relative to each other, and a trigger device is arranged to trigger the high-frequency working mode of the welding head, and the first clamping member and the second clamping member are connected to each other to form a device fixing position for clamping a device; When the first clamping member and the second clamping member move relative to each other, the volume of the device fixing position is reduced or restored; When the first clamping member and the second clamping member move relative to each other, the volume of the device fixing position is reduced or restored; When the first clamping member and the second clamping member move relative to each other, the volume of the device fixing position is reduced or restored; The first clamping member and the second clamping member are connected to each other by a first elastic member, when the first elastic member is compressed, the volume of the device fixing position is reduced, and when the first elastic member rebounds, the volume of the device fixing position is restored; The second clamping member is connected to the driving member by a second elastic member, the trigger device comprises a trigger block connected to the second clamping member and a detector connected to the welding head, the trigger block is arranged away from the detector, and when the trigger block and the detector are in contact with each other, the trigger device is turned on, and when the second elastic member is compressed, the trigger block and the detector are close to each other; The first elastic member and the second elastic member are parallel to each other, and the elastic coefficient of the first elastic member is smaller than that of the second elastic member; When the driving member is continuously driven, the first elastic member and the second elastic member are compressed in sequence, the volume of the device fixing position is reduced, and the trigger block and the detector are close to each other; When the driving member stops driving, the second elastic member and the first elastic member rebound in sequence, the trigger block and the detector are away from each other, and the volume of the device fixing position is restored.

2. The ultrasonic sealing apparatus according to claim 1, wherein The driving member comprises a handle and a pushing member connected to each other, one end of the handle is hinged to the first clamping member, the pushing member is connected to the second clamping member and abuts against the second elastic member, the trigger block is fixed on the pushing member, and the detector is arranged on the side of the trigger block away from the pushing member; When the handle moves towards the second clamping member, the second clamping member compresses the first elastic member to reduce the volume of the device fixing position, and the pushing member compresses the second elastic member to move the trigger block towards the detector; when the handle moves away from the second clamping member, the second elastic member rebounds, the trigger block moves away from the detector, the first elastic member rebounds, and the volume of the device fixing position is restored.

3. The ultrasonic sealing apparatus of claim 2, wherein The pushing member comprises a pushing block and a transmission rod, and both ends of the transmission rod are hinged to the handle and the pushing block, respectively; The second clamping member is further provided with a second guide device, the pushing block and the second elastic member are sleeved on the second guide device, and one end of the pushing block and the second elastic member abuts against each other.

4. The ultrasonic sealing apparatus of claim 1, wherein The first guide device is arranged between the first clamping member and the second clamping member, and is used to control the moving direction of the first clamping member and the second clamping member.

5. The ultrasonic sealing apparatus of claim 1, wherein The device fixing part comprises a pressing part and a fixing part arranged on the first and second clamping members, the fixing part is provided with a receiving groove for receiving the lateral opening of the device to be welded, the pressing part is arranged on one side of the receiving groove and is arranged away from the fixing part, When the driving member drives the first and second clamping members to move relatively, the pressing part and the fixing part move close to or away from each other.

6. The ultrasonic sealing apparatus of claim 1, wherein, The limiting part comprises a baffle arranged on the first clamping member and a stopper arranged on the second clamping member, the highest point of the stopper is higher than the lowest point of the baffle; The stopper comprises a first stopper and a second stopper arranged on opposite sides of the baffle, when the first stopper abuts against the baffle, the device fixing part has the smallest volume, when the second stopper abuts against the baffle, the device fixing part has the largest volume, the positions of the first and second stoppers on the second clamping member are adjustable.

7. The ultrasonic sealing apparatus of claim 6, wherein, The second clamping member is provided with a first mounting groove and a second mounting groove, the first stopper is mounted on the first mounting groove by a first fastener, and the second stopper is mounted on the second mounting groove by a second fastener; When the first and second fasteners are in a tightened state, the positions of the first and second stoppers on the first and second mounting grooves are fixed, when the first and second fasteners are in a non-tightened state, the first and second stoppers can slide in the first and second mounting grooves.

8. The ultrasonic sealing apparatus of claim 1, wherein, The welding head is arranged on the device fixing part and is provided with a welding chamfer, the angle of the chamfer is 40°-50°.

9. A sealing method of an ultrasonic sealing apparatus, characterized by, The sealing method comprises the following steps: S1 selecting a device to be welded and sealed, setting corresponding voltage and frequency on the ultrasonic controller according to the size and material of the device, so that the high-frequency working mode of the welding head at the voltage and frequency can melt the material of the device to be welded and sealed; S2 placing the device in the device fixing part, using the driver to make the first and second clamping members move towards each other to reduce the device fixing part until the device fixing part clamps the device; S3 the clamped device is in contact with the welding head, maintaining the clamping state of the device while the driver further operates until the trigger device triggers the high-frequency working mode of the welding head, under the high-frequency working mode of the welding head, the local part of the device will generate self-friction, the high temperature generated by the self-friction of the device melts the local material of the device; S4 after the local material of the device is melted, the high-frequency working mode of the welding head is stopped, and the device is continuously clamped until the melted material is shaped; S5 the driver stops driving, each component is reset, the device is released, the shaped and melted material is accelerated to cool and solidify, and the welding and sealing are completed.

10. The sealing method of an ultrasonic sealing apparatus according to claim 9, wherein The ultrasonic controller can also set the time of the high-frequency working mode of the welding head.

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