Winding and welding integrated mechanism of automatic welding machine for mask ear straps

Abstract

The invention discloses a winding and welding integrated mechanism of an automatic welding machine for mask ear straps. The mechanism comprises a frame, a winding mechanism and a welding mechanism. The winding mechanism and the welding mechanism are integrated and arranged on an upper platform. The welding mechanism comprises a welding lower die and a welding upper die which are opposite to each other up and down. The welding lower die is fixedly arranged on both sides of a mask conveyor belt. The welding upper die is connected to the lower ends of four connecting columns. The winding mechanism comprises a movable platform and two winding disks which are symmetrical below the movable platform. The four connecting columns are vertically sleeved on the movable platform. Retaining rings are respectively arranged on the upper parts of the four connecting columns. Buffer springs are sleeved on the four connecting columns and are located between the retaining rings and the movable platform. The two winding disks are respectively driven by a winding servo motor to perform rotational movement. The winding servo motor is fixed on the movable platform. The winding disk can complete a winding action by rotating 180 degrees. The invention is beneficial in that the winding mechanism and the welding mechanism are integrated so that the winding and welding actions are continuous and fast, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of an automatic mask ear strap welding machine, and in particular to a winding and welding integrated mechanism of the automatic mask ear strap welding machine. Background Art

[0002] A mask is a personal hygiene protective product that is worn on the mouth and nose to filter the air entering and exiting the nose and mouth, so as to prevent harmful gases, droplets, dust, viruses, etc. from entering and exiting the wearer's mouth and nose. It has a certain filtering effect on the air entering the lungs. It is usually made of gauze, meltblown cloth, non-woven fabric, etc. When respiratory infectious diseases are prevalent or when working in an environment polluted by dust, germs, dust, etc. in the air can enter the human lungs through breathing and cause serious damage to the body. Wearing a mask can play a certain filtering role. The mask generally includes a mask body and ear straps. The ear straps are fixed on the left and right sides of the mask body. When people wear the mask, they hang the ear straps on both sides of the ears to fix the mask on the face.

[0003] In the production of existing masks, they are generally produced by mask machines, and the connection between the ear straps and the mask body is generally welded using a mask welding machine.

[0004] The automatic mask ear strap welding machines currently on the market include separate winding actions and ear strap welding actions. Although the production efficiency has been improved to a certain extent due to automation, the structure and action of the winding mechanism and the welding mechanism are not integrated into one design, which separates the winding and welding actions and does not have a certain degree of overlap. Therefore, the actions are not completed continuously and quickly enough, and the production efficiency needs to be further improved. Summary of the invention

[0005] The object of the present invention is to provide a winding and welding integrated mechanism for an automatic welding machine for mask ear straps, so that the winding mechanism and the welding mechanism can be designed as one, and the actions are interrelated, so as to overcome the shortcomings of the above-mentioned prior art.

[0006] The technical solution of the present invention is a winding and welding integrated mechanism of an automatic welding machine for mask ear straps, comprising a frame, a winding mechanism and a welding mechanism, the frame is an equipment platform, a mask conveyor belt is arranged on the equipment platform, a main bracket is arranged above the mask conveyor belt, an upper platform is arranged on the upper part of the main bracket, the winding mechanism and the welding mechanism are integrated on the upper platform, the welding mechanism comprises a welding lower mold and a welding upper mold opposite to each other, the welding lower mold is fixedly arranged on both sides of the mask conveyor belt, the upper plane of the welding lower mold is flush with the plane of the mask conveyor belt, a main cylinder is fixedly arranged at the center of the upper platform, four connecting columns driven by the main cylinder to reciprocate up and down are arranged below the upper platform, and the welding upper mold is provided with corresponding The four same ones are respectively connected to the lower ends of the four connecting columns. When the welding upper mold descends, the welding parts of the mask body and the ear straps can be pressed down at the same time to contact with the upper plane of the welding lower mold. The winding mechanism includes a movable platform and two winding disks symmetrically arranged under the movable platform. The four connecting columns are vertically sleeved on the movable platform. The upper parts of the four connecting columns are respectively provided with retaining rings. The four connecting columns are sleeved with buffer springs between the retaining rings and the movable platform. The two winding disks are respectively driven by a winding servo motor and can rotate on a horizontal plane. The winding servo motor is fixed on the movable platform. The winding disk can complete a winding action by rotating 180 degrees, and the next winding action can be completed by continuing to rotate 180 degrees.

[0007] Preferably, the lower end of the welding lower mold is connected to a transducer, the transducer is connected to an ultrasonic generator, the transducer and the ultrasonic generator are arranged on a rack below the equipment platform, the transducer converts electrical energy into ultrasonic vibration energy and transmits it to the welding lower mold, and when the welding lower mold and the welding upper mold are pressed together, heat energy is generated due to friction due to vibration. After a period of time, the welding lower mold and the welding upper mold jointly weld the ear band end to the mask body.

[0008] Preferably, the lower plane of the welding upper mold is provided with a plurality of evenly distributed point-shaped protrusions, and the point-shaped protrusions are used to transform the full-plane welding of the welding parts of the ear strap and the mask body into multi-point welding.

[0009] Preferably, the two winding reels are provided with ear band clips on both sides of the parts where the ear bands are to be cut, and a pressing block is provided above the ear band clip, and the pressing block is driven by a pressing cylinder fixed on the movable platform to move up and down, and an inclined surface is provided at the bottom of the pressing block, and when the pressing block moves downward, the inclined surface touches the clamping end of the ear band clip to clamp the ear band; a releasing block is provided on the other side of the pressing block relative to the rotating shaft of the winding reel, and the releasing block is driven by a releasing cylinder fixed on the movable platform to move up and down, and when the releasing block moves downward, it touches the releasing end of the ear band clip to loosen the ear band.

[0010] Preferably, it also includes a wire cutting module, which includes scissors, a scissors driving motor, a scissors driving cylinder and a scissors bracket. The scissors bracket is arranged on the equipment platform and located on both sides of the mask conveyor belt. The scissors driving cylinder is arranged on the scissors bracket in a direction parallel to the mask conveyor belt. The scissors and the scissors driving motor are simultaneously driven by the scissors driving cylinder to move back and forth. One of the blades of the scissors is fixed, and the other blade is driven to rotate by the scissors driving motor. After the winding mechanism completes a winding action, the scissors extend toward the winding mechanism and reset after cutting the ear strap.

[0011] Preferably, two identical wire feeding modules are provided on both sides of the upper platform, and the wire feeding modules include an upright wire feeding bracket, and the wire feeding bracket is provided with a guide wheel, a wire pulling wheel, a pressure wheel, an adjustment wheel and a lead-out wheel for mounting the ear band in sequence, the wire pulling wheel is driven to rotate by a wire pulling motor, the pressure wheel presses the ear band against the wire pulling wheel, the adjustment wheel can move up and down along the guide rail, the guide wheel guides the ear band from the outside, and pulls it downward through the wire pulling wheel and the pressure wheel, the adjustment wheel can rely on gravity to tension the ear band downward, and the lead-out wheel changes the direction of the ear band and leads it downward to the winding mechanism.

[0012] Compared with the prior art, the invention has the beneficial effect that the winding mechanism and the welding mechanism are designed as one, with a compact structure, a short action stroke, and a continuous action. The operation of the winding mechanism and the operation of the welding mechanism have a certain degree of overlap, which saves the action time and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional view of the automatic welding machine for mask ear straps of the present invention;

[0014] Figure 2 It is a schematic diagram of a conveyor belt carrying a mask ear strap of the present invention;

[0015] Figure 3 is a three-dimensional view of the welding mechanism of the present invention;

[0016] Figure 4 It is a three-dimensional view of the welding upper mold of the present invention;

[0017] Figure 5 is a bottom view of the welding upper mold of the present invention;

[0018] Figure 6 is a three-dimensional view of the winding and welding mechanism of the present invention;

[0019] Figure 7 is a three-dimensional view of the winding mechanism of the present invention;

[0020] Figure 8 is a side view of the winding mechanism of the present invention;

[0021] Fig. 9 is a three-dimensional view of the thread trimming module of the present invention;

[0022] Fig.10 It is a three-dimensional view of the incoming line module of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings:

[0024] Example

[0025] like Figure 1 As shown, a winding and welding integrated mechanism of an automatic welding machine for mask ear straps of the present invention comprises a frame 1, a winding mechanism 4 and a welding mechanism 6. The frame 1 is provided with an equipment platform 10, a mask conveyor belt 2 is provided on the equipment platform 10, a main bracket 11 is provided above the mask conveyor belt 2, an upper platform 110 is provided on the upper part of the main bracket 11, and the winding mechanism 4 and the welding mechanism 6 are integrated on the upper platform 110. The concept of "wire" in the above-mentioned wire feeding, winding and wire cutting all refers to the ear strap wire, that is, the ear strap is a very long ear strap wire before it is cut off.

[0026] like Figure 2 As shown, the mask body 20 conveyed on the mask conveyor belt 2 has the ear straps 21 welded on the mask body 20, and the welding part 22 of the two. The width of the mask conveyor belt 2 is smaller than the width of the mask body 20. When the mask conveyor belt 2 is loaded with the mask body 20, the welding parts 22 of the two sides of the mask body 20 and the ear straps 21 are located outside the two sides of the mask conveyor belt 2, which is convenient for the welding line 6 to perform welding.

[0027] like Figure 1 , Figure 3 As shown, the welding mechanism 6 includes a welding lower mold 62 and a welding upper mold 63 which are opposite to each other. The welding lower mold 62 is provided with two blocks made of metal, which are respectively fixed on both sides of the mask conveyor belt 2. The upper plane of the welding lower mold 62 is flush with the plane of the mask conveyor belt 2, so that both sides of the mask body can be automatically placed on the upper plane of the welding lower mold 62. The lower end of the welding lower mold 62 is connected to the transducer 61, and the transducer 61 is connected to the ultrasonic generator (not shown in the figure). The transducer 61 and the ultrasonic generator are arranged on the frame 1 below the equipment platform 10.

[0028] like Figure 2 , 3As shown, the welding upper mold 63 is provided with four identical ones, which are respectively connected to the lower ends of four connecting columns 64 provided on both sides of the mask conveyor belt 2. The four connecting columns 64 are driven by the main cylinder 65 provided on the upper platform 110 of the main bracket 11 to move up and down. The four connecting columns 64 can move downward synchronously to drive the welding upper mold 62 to press the welding parts 22 of the mask body 20 and the ear straps 21 on the left and right sides simultaneously to contact the upper plane of the welding lower mold 62. The transducer 61 converts electrical energy into ultrasonic vibration energy and transmits it to the welding lower mold 62. When the welding lower mold 62 and the welding upper mold 63 are pressed together, heat energy is generated due to friction due to vibration. After a period of time, the welding lower mold 62 and the welding upper mold 63 jointly weld the end of the ear strap 21 to the mask body 20.

[0029] like Figure 3-Figure 5 As shown, the lower plane of the welding upper mold 63 is provided with evenly distributed dot-shaped protrusions 631, and the dot-shaped protrusions 631 are used to convert the welding surface of the welding part 22 of the mask body 20 and the ear strap 21 into a multi-point welding, which can not only achieve firm welding, but also avoid melting through or melting due to excessive heat during full-area welding.

[0030] like Figure 1 , Figure 6-Figure 8 As shown, the winding mechanism 4 includes a movable platform 40 and two winding drums 41 symmetrically arranged below the movable platform 40, a rotating shaft 410 is provided in the middle of the winding drum 41, four connecting columns 64 are vertically inserted into the movable platform 40, and retaining rings 641 are respectively provided on the four connecting columns 64. Buffer springs 42 are provided on the four connecting columns between the retaining rings 641 and the movable platform 40. The two winding drums 41 are respectively driven by a winding servo motor 43 and can rotate in a horizontal plane. The winding servo motor 43 is fixed on the movable platform 40. The winding drum 41 can complete a winding action by rotating 180 degrees, and can complete the next winding action by continuing to rotate 180 degrees.

[0031] When the winding mechanism and the welding mechanism are working, the main cylinder 65 drives the four connecting columns 64 to drive the welding upper mold 63 and the movable platform 40 to move downward at the same time, and the movable platform 40 drives the winding disk 41 downward. The winding disk 41 first touches the mask body when it moves downward, and the ear strap contacts the mask body at this time. Then the four connecting columns 64 compress the buffer spring 42 and continue to move downward, driving the welding upper mold 63 and the welding lower mold 62 to close, ultrasonically welding the welding parts of the ear strap and the mask body, and then resetting. Therefore, the downward movement of the winding mechanism and the welding mechanism is realized by driving the four connecting columns by the main cylinder of the integrated design, that is, the downward movement of the four connecting columns 64 can drive the winding mechanism and the welding mechanism to move at the same time, and only the buffer spring 42 is used to make the downward movement of the above two mechanisms have some time difference, which can save time and improve work efficiency.

[0032] like Figure 7 , Figure 8 As shown, ear strap clips 411 are respectively provided on both sides of the parts of the ear straps to be cut on the two winding drums 41, and a pressing block 412 is provided above the ear strap clips 411. The pressing block 412 is driven by a pressing cylinder 413 fixed on the movable platform 40 to move up and down. An inclined surface 4120 is provided at the bottom of the pressing block 412. When the pressing block 412 moves downward, the inclined surface 4120 touches the clamping end (located on the outside) of the ear strap clip 411 to clamp the ear strap; a release block 414 is provided on the other side of the pressing block 412 relative to the rotating shaft of the winding drum 41, and the release block 414 is driven by a release cylinder 415 fixed on the movable platform 40 to move up and down. When the release block 414 moves downward, it touches the release end (located on the inside) of the ear strap clip 411, and at this time, its clamping end (the other end) is opened to loosen the ear strap, and there is a rotating shaft between the release end and the clamping end of the ear strap clip 411, so the release end and the clamping end form a lever. When the ear band clips 411 are in the clamping action, they can clamp the ear band that has been wound by the winding mechanism 4, so that the wire cutting module 5 can cut the ear band between the two clamped ear band clips 411 without causing the ear band to fall off, and at the same time, the ear band can be pulled to rotate in the next step.

[0033] like Figure 1 , Figure 6 , Fig. 9 As shown, the winding and welding integrated mechanism of the mask ear strap automatic welding machine of the present invention also includes a wire cutting module 5, which includes scissors 53, a scissors driving motor 52, a scissors driving cylinder 51 and a scissors bracket 50 arranged on the equipment platform 10 and located on both sides of the two chains 26. The scissors driving cylinder 51 is arranged on the scissors bracket 50 in a direction parallel to the chain 26. The scissors 53 and the scissors driving motor 52 are driven by the scissors driving cylinder 51 at the same time to move back and forth parallel to the chain 26. One of the blades of the scissors 53 is fixed, and the other blade is driven to rotate by the scissors driving motor 52. After the winding mechanism 4 completes a winding action, the scissors 53 extend in the direction of the winding mechanism 4 and cut the ear strap, and then the scissors 53 are reset. When the winding mechanism 4 is working, the two ear band clips 411 on one side of the wire cutting module 5 clamp the ear band at the same time, the wire cutting module 5 moves, and the scissors 53 cut the ear band from the middle of the two ear band clips 411. Then the winding servo motor 43 drives the winding drum 41 to rotate 180 degrees, and the winding drum 41 winds the ear band to the outside of the winding drum 41 (towards the outside of the conveyor belt).

[0034] like Fig.10As shown, two identical incoming wire modules 3 are provided on both sides of the upper platform 110, and the incoming wire module 3 includes an upright incoming wire bracket 30, and the incoming wire bracket 30 is provided with a guide wheel 31, a wire pulling wheel 32, a clamping wheel 33, an adjusting wheel 34 and a lead-out wheel 35 for mounting the ear strap in sequence. The wire pulling wheel 32 is driven to rotate by a wire pulling motor 36, and the clamping wheel 33 presses the ear strap 272 onto the wire pulling wheel 32, and the adjusting wheel 34 can move up and down along the guide rail 340, and the guide wheel 31 introduces the ear strap 272 from the outside, and the wire pulling wheel 32 and the clamping wheel 33 rotate to pull it downward, and the adjusting wheel 34 can rely on gravity to tension the ear strap downward, and the lead-out wheel 35 changes the direction of the ear strap 272 and then leads it downward to the winding mechanism 4. The adjusting wheel 34 can move up and down freely, so that when the winding mechanism 4 is winding quickly, the adjusting wheel 34 can be pulled upward, and the mask ear straps 272 on the adjusting wheel 34 can be quickly released and supplied to the winding mechanism, avoiding the disadvantage that the pulling wheel 32 cannot quickly supply the ear straps in time, so the adjusting wheel 34 plays a buffering role.

[0035] The above are only preferred embodiments of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A winding and welding integrated mechanism of an automatic welding machine for mask ear straps, comprising a frame, a winding mechanism and a welding mechanism, the frame having an equipment platform, a mask conveyor belt being arranged on the equipment platform, a main bracket being arranged above the mask conveyor belt, an upper platform being arranged on the upper part of the main bracket, characterized in that: The winding mechanism and the welding mechanism are integrated on the upper platform, and the welding mechanism includes a welding lower mold and a welding upper mold which are opposite to each other up and down. The welding lower mold is fixedly arranged on both sides of the mask conveyor belt, and the upper plane of the welding lower mold is flush with the plane of the mask conveyor belt. A main cylinder is fixedly arranged at the center of the upper platform, and four connecting columns driven by the main cylinder to reciprocate up and down are arranged under the upper platform. The welding upper mold is provided with four identical ones respectively connected to the lower ends of the four connecting columns. When the welding upper mold moves downward, the welding parts of the mask body and the ear straps can be pressed down to the same position as the welding parts. The upper plane of the lower mold is in contact, the winding mechanism includes a movable platform and two winding discs symmetrically arranged below the movable platform, the four connecting columns are vertically sleeved on the movable platform, the upper parts of the four connecting columns are respectively provided with retaining rings, and the four connecting columns are sleeved with buffer springs between the retaining rings and the movable platform. The two winding discs are respectively driven by winding servo motors to rotate on the horizontal plane, and the winding servo motor is fixed on the movable platform. The winding disc can complete a winding action by rotating 180 degrees, and the next winding action can be completed by continuing to rotate 180 degrees; The lower plane of the welding upper mold is provided with a plurality of evenly distributed dot-shaped protrusions, and the dot-shaped protrusions are used to transform the full-plane welding of the welding parts of the ear strap and the mask body into multi-point welding; The two winding reels are provided with ear strap clips on both sides of the parts where the ear straps are to be cut, respectively; a pressing block is provided above the ear strap clips, the pressing block is driven by a pressing cylinder fixed on the movable platform to move up and down, an inclined surface is provided at the bottom of the pressing block, when the pressing block moves downward, the inclined surface touches the clamping end of the ear strap clip to clamp the ear strap; a loosening block is provided on the other side of the pressing block relative to the rotating shaft of the winding reel, the loosening block is driven by a loosening cylinder fixed on the movable platform to move up and down, when the loosening block moves downward, it touches the loosening end of the ear strap clip to loosen the ear strap; Two identical wire feeding modules are also provided on both sides of the upper platform, and the wire feeding modules include an upright wire feeding bracket, and the wire feeding bracket is provided with a guide wheel, a wire pulling wheel, a pressure wheel, an adjustment wheel and a lead-out wheel for mounting the ear band in sequence, the wire pulling wheel is driven to rotate by a wire pulling motor, the pressure wheel presses the ear band against the wire pulling wheel, the adjustment wheel can move up and down along the guide rail, the guide wheel guides the ear band from the outside, and pulls it downward through the wire pulling wheel and the pressure wheel, the adjustment wheel can tension the ear band downward by gravity, and the lead-out wheel changes the direction of the ear band and leads it downward to the winding mechanism.

2. The winding and welding integrated mechanism of the mask ear strap automatic welding machine according to claim 1, characterized in that: The lower end of the welding lower mold is connected to a transducer, and the transducer is connected to an ultrasonic generator. The transducer and the ultrasonic generator are arranged on a rack below the equipment platform. The transducer converts electrical energy into ultrasonic vibration energy and transmits it to the welding lower mold. When the welding lower mold and the welding upper mold are pressed together, heat energy is generated due to friction due to vibration. After a period of time, the welding lower mold and the welding upper mold jointly weld the ear band end to the mask body.

3. The winding and welding integrated mechanism of the mask ear strap automatic welding machine according to claim 1 is characterized in that: It also includes a wire cutting module, which includes scissors, a scissors driving motor, a scissors driving cylinder and a scissors bracket. The scissors bracket is arranged on the equipment platform and located on both sides of the mask conveyor belt. The scissors driving cylinder is arranged on the scissors bracket in a direction parallel to the mask conveyor belt. The scissors and the scissors driving motor are driven by the scissors driving cylinder to move back and forth at the same time. One of the blades of the scissors is fixed, and the other blade is driven to rotate by the scissors driving motor. After the winding mechanism completes a winding action, the scissors extend toward the winding mechanism and cut the ear strap and then reset.

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