A device for cross-welding mask ear straps

Abstract

A device capable of cross-welding ear straps of a mask comprises a transmission line: the transmission line sequentially transmits a single mask without welded ear straps to a processing station, and then continues to transmit the mask with welded ear straps to an external container; a wire guide: the wire guide pulls the ear straps in advance to prepare for subsequent processes; a wire puller: the wire puller pulls the ear straps sent by the wire guide from one side of the transmission line to the other side, and cuts the ear straps with the cooperation of a shear, so that the two ends of the ear straps are finally located on both sides of the transmission line respectively, to prepare for subsequent processes; a wiring device: the wiring device arranges an ear strap prepared by the wire puller on the diagonal point of the mask; the shearer: the shearer can cut the ear straps clamped by the wiring device; a welding device: the welding device performs welding operations and a base frame on the ear straps arranged by the wiring device.

Description

Technical Field

[0001] The invention relates to a device capable of welding ear straps, in particular to a device capable of cross-welding the ear straps of a mask. Background Art

[0002] At present, the ear straps of masks are all welded on the same side of the mask by ultrasonic welding. However, depending on the ear straps, some are welded on the short side of the mask, and some are welded on the long side of the mask, but for the same ear strap, they are all located on the same side of the mask. During welding, the ear straps are supplied from both sides of the mask at the same time, and the left and right sides of the same mask are welded at the same time.

[0003] However, there are many disadvantages when the ear straps are located on the same side. Therefore, our company has developed cross-arranged ear straps, that is, the same ear strap is located at the diagonal point of the mask, and the two ear straps are arranged crosswise. At the same time, we have also developed equipment that can cross-weld the mask ear straps. Summary of the invention

[0004] A device capable of cross-welding ear straps of a mask, comprising:

[0005] Transmission line: The transmission line sequentially transmits the masks without welded ear straps to the processing station, and then transmits the masks with welded ear straps to the external container;

[0006] Wire guide: The wire guide pulls the ear strap in advance to prepare for the subsequent process;

[0007] Wire puller: The wire puller pulls the ear strap sent by the wire guide from one side of the transmission line to the other side, and cuts the ear strap with the cooperation of the shear, so that the two ends of the ear strap are located on both sides of the transmission line respectively, preparing for the subsequent process;

[0008] Wiring device: the wiring device arranges an ear strap prepared by the wire puller at the diagonal point of the mask;

[0009] Cutter: The cutter can cut the ear straps clamped by the wiring device;

[0010] Welding device: the welding device performs welding operation on the ear strap arranged by the wiring device;

[0011] Base frame: the transmission line, the wire guide, the wire puller, the wiring device, and the welding device are all installed on the base frame.

[0012] The transmission line includes a plurality of mask stations arranged in a row. The mask station body is a rigid structure. The mask stations are hinged to form a ring chain structure after being hinged. The driving mechanism drives the stepping of the structure through the transmission line driving wheel.

[0013] Preferably, the mask station is provided with mask positioning protrusions at the head and tail of the forward direction of the transmission line, and the positioning protrusions ensure that the mask is correctly placed in the mask station.

[0014] The wire guide includes a wire guide motor, a wire guide driving wheel fixed to the wire guide motor, and a wire guide driven wheel matched with the wire guide driving wheel. The ear belt is pulled by the friction force of the wire guide driving wheel and the wire guide driven wheel, passes around the intermediate wheel and goes to the idle wheel, and then enters the wire puller through the ear belt hole after passing through the steering wheel.

[0015] When the ear strap passes through the intermediate wheel, the intermediate wheel slides upward on the sliding column under the pulling force of the ear strap and contacts the adjustment column. The adjustment column is tightly matched with the sliding column. The tightness of the ear strap can be adjusted by changing the position of the adjustment column on the sliding column.

[0016] The wire puller includes a wire puller base, a wire pulling belt, a guide rail, a chuck, and a wire crimper. The wire puller base is fixedly connected to the base frame, and the wire pulling belt is driven by a wire pulling motor through a wire pulling driving wheel arranged on the wire puller base; the guide rail is arranged parallel to the wire pulling belt and connected to the wire puller base; the chuck and the wire crimper can both slide on the guide rail, and the chuck and the wire crimper can move in opposite directions with the movement of the wire pulling belt.

[0017] The wire crimping device comprises a wire crimping groove, a wire crimping head and a guide wheel. The guide wheel guides the ear band sent by the wire guide, and the ear band then passes through the wire crimping groove to expose part of the ear band. The wire crimping head is driven by a wire crimping head driving member.

[0018] The clamp comprises a clamp driving member and clamping jaws. The clamp driving member can drive the clamping jaws to approach each other to clamp the ear strap, and can also relax the clamping jaws to release the ear strap.

[0019] When the wire crimper approaches the chuck, the wire crimping head moves downward to press the ear strap and drive the ear strap toward the chuck; when contacting the clamping jaws, the clamping jaws clamp the remaining ear strap; when the wire crimper moves away from the chuck, the wire crimping head moves upward to loosen the ear strap.

[0020] Preferably, the chuck driving component and the wire crimping head driving component are hydraulic cylinders.

[0021] Preferably, the drawstring belt is a toothed belt.

[0022] Preferably, the guide rails are two circular rods arranged in parallel.

[0023] Preferably, the clamp is fixedly connected to the upper ring of the cable pull belt, and the wire presser is fixedly connected to the lower ring of the cable pull belt. After being fixed, the clamp and the wire presser are respectively located on both sides of the cable pull belt.

[0024] The wiring device includes a wiring clamp, a clamp driving member, a rotating driving member, a lifting driving member, a travel driving member, and a clamp guide rail; the clamp driving member can clamp or loosen the wiring clamp; the wiring clamp clamps the ear strap pulled by the wire puller; the rotating driving member can make the clamp rotate; the lifting driving member can make the clamp lift; the travel driving member can move the clamp along the clamp guide rail.

[0025] The lifting drive member can enable the wiring clamp to complete two lifting strokes, that is, it can enable the clamp to be in the highest position, the middle position and the lowest position; it includes a first lifting drive member and a second lifting drive member, the first lifting drive member enables the wiring clamp to complete the first lifting stroke, and the second lifting drive member enables the wiring clamp to complete the second lifting stroke.

[0026] There are four wiring devices, which are grouped in pairs. Each group is arranged on both sides of the transmission line, and each group of wiring devices completes the wiring of one ear strap.

[0027] The shear is arranged below the wire puller, and includes a shearing knife, a driving arm, a positioning arm, a shearing driving member, a shearing shaft, and a sliding hole. The shearing knife has two pieces and performs shearing motion around the shearing shaft. The driving arm slides along the sliding hole under the action of the shearing driving member, and in the process of sliding along the sliding hole, the shearing knife is driven to perform shearing motion; the positioning arm can position the shearing knife to prevent it from exceeding a limited position.

[0028] The welding device is an ultrasonic welding device, including an ultrasonic signal generator, an upper die head, a lower die head, and a cooling fan. The ultrasonic signal generator can emit ultrasonic waves to weld the mask and ear straps between the upper die head and the lower die head, and the cooling fan cools the ultrasonic generator; the upper die head can move in the up and down directions so that it can be close to the lower die head to weld the mask.

[0029] Preferably, the upper die is driven by a die drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1-3 It is a schematic diagram of the overall structure of the present invention.

[0031] Figure 4 Schematic diagram of the transmission line and welding device.

[0032] Figure 5 It is a schematic diagram of the wire puller assembly of the present invention.

[0033] Figure 6 This is a schematic diagram of the wire presser part of the wire puller.

[0034] Figure 7 It is a schematic diagram of the wiring device assembly of the present invention.

[0035] Figure 8 This is a schematic diagram of the ultrasonic generator part of the welding device.

[0036] Fig. 9 It is a schematic diagram of the upper die head part of the welding device.

[0037] Fig.10 This is the structure of the wire guide.

[0038] Figure 11-12 Schematic diagram of the shear.

[0039] In the figure: 1-base, 2-wire guide, 3-transmission line, 31-transmission line driving wheel, 32-transmission line driving motor, 33-transmission line guide wheel, 34-mask station, 35-mask, 4-wire puller, 41-base, 42-wire pulling belt, 43-guide rail, 44-chuck, 441-claw, 442-claw driving member, 45-wire pulling motor, 46-wire pulling driving wheel, 421-wire pressing device, 47-wire pressing groove, 48-wire pressing head, 49-guide wheel, 410-wire pressing head driving member, 5-first wiring device, 51-wiring clamp, 52-clamp driving member, 53-rotation driving member, 54-first lifting driving member, 55-second lifting driving member, 56-travel drive, 57-chuck guide, 6-second wiring device, 7-third wiring device, 8-fourth wiring device, 9-control cabinet, 10-welding device, 101-ultrasonic generator, 102-lower die head, 103-cooling fan, 104-upper die head, 105-die head drive, 111-shear knife, 112-drive arm, 113-positioning arm, 114-shear drive, 115-shear shaft, 116-slide hole, 121-lead motor, 122-lead driving wheel, 123-lead driven wheel, 124-adjusting column, 125-intermediate wheel, 126-idle wheel, 127-steering wheel, 128-ear belt hole, 129-slide column. DETAILED DESCRIPTION

[0040] In order to explain the present invention more clearly, the specific implementation manner of the present invention is further described below with reference to the accompanying drawings.

[0041] like Figure 1-4 As shown, the present invention includes a base frame, and a wire transmission, a wire guide, a wire puller, a shear, and a welding device installed on the base frame. The structures and functions thereof are described separately below.

[0042] The transmission line sequentially transmits the single mask without welded ear straps to the processing station, and then transmits the mask with welded ear straps to the external container; the transmission line includes a number of mask stations arranged in a row, the mask station body is a rigid structure, the mask stations are hinged, and a ring chain structure is formed after hinged, and the driving mechanism drives it to step through the transmission line driving wheel. The mask station is provided with mask positioning protrusions at the head and tail of the transmission line in the forward direction, and the positioning protrusions ensure that the mask is correctly placed in the mask station.

[0043] Wire guide: The wire guide will pull the ear strap in advance to prepare for the subsequent process; the wire guide includes a wire guide motor, a wire guide driving wheel fixed to the wire guide motor, and a wire guide driven wheel cooperating with the wire guide driving wheel. The ear strap is pulled by the friction force of the wire guide driving wheel and the wire guide driven wheel, passes around the middle wheel and goes to the idle wheel, and then passes through the steering wheel and enters the wire puller through the ear strap hole.

[0044] When the ear strap passes through the middle wheel, the middle wheel slides upward on the sliding column under the pulling force of the ear strap and contacts the adjusting column. The adjusting column and the sliding column are tightly matched. The tightness of the ear strap can be adjusted by changing the position of the adjusting column on the sliding column.

[0045] Wire puller: The wire puller pulls the ear band sent by the wire guide from one side of the transmission line to the other side, and cuts the ear band with the cooperation of the shear, so that the two ends of the ear band are located on both sides of the transmission line respectively, preparing for the subsequent process; the wire puller includes a wire puller base, a wire puller belt, a guide rail, a chuck, and a wire crimper. The wire puller base is fixed to the base frame, and the wire puller belt is driven by the wire pulling motor through the wire pulling driving wheel set on the wire puller base; the guide rail is arranged parallel to the wire puller belt and connected to the wire puller base; the chuck and the wire crimper can slide on the guide rail, the chuck is fixed to the upper ring of the wire puller belt, and the wire crimper is fixed to the lower ring of the wire puller belt. The chuck and the wire crimper can move in opposite directions with the movement of the wire puller belt. The wire crimper includes a wire crimping groove, a wire crimping head, and a guide wheel. The guide wheel guides the ear band sent by the wire guide, and the ear band then passes through the wire crimping groove to expose part of the ear band; the wire crimping head is driven by the wire crimping head driving member. The chuck includes a chuck driving member and a clamping jaw. The chuck driving member can drive the clamping jaws to approach each other to clamp the ear strap, and can also loosen the clamping jaws to release the ear strap. When the wire crimper approaches the chuck, the wire crimping head moves downward, presses the ear strap, and drives the ear strap to approach the chuck; when the wire crimper contacts the clamping jaw, the clamping jaw clamps the remaining ear strap; when the wire crimper moves away from the chuck, the wire crimping head moves upward to loosen the ear strap.

[0046] Wiring device: The wiring device arranges an ear strap prepared by the wire puller on the diagonal point of the mask; the wiring device includes a wiring chuck, a chuck driver, a rotating driver, a lifting driver, a travel driver, and a chuck guide rail; the chuck driver can clamp or loosen the wiring chuck; the wiring chuck clamps the ear strap pulled by the wire puller; the rotating driver can make the chuck rotate; the lifting driver can make the chuck lift; the travel driver can move the chuck along the chuck guide rail.

[0047] The lifting drive member can enable the wiring clamp to complete two lifting strokes, that is, it can enable the clamp to be in the highest position, the middle position and the lowest position; it includes a first lifting drive member and a second lifting drive member, the first lifting drive member enables the wiring clamp to complete the first lifting stroke, and the second lifting drive member enables the wiring clamp to complete the second lifting stroke.

[0048] There are four wiring devices, namely the first wiring device, the second wiring device, the third wiring device and the fourth wiring device. The first wiring device and the second wiring device are a group, and the third wiring device and the fourth wiring device are a group. Each group is arranged on both sides of the transmission line, and each group of wiring devices completes the wiring of one ear strap.

[0049] Shears: The shears can cut the ear straps clamped by the wiring harness; the shears are arranged under the wire puller, and include a shearing knife, a driving arm, a positioning arm, a shearing driving member, a shearing shaft, and a sliding hole. The shearing knife has two pieces, which perform shearing movements around the shearing shaft. The driving arm slides along the sliding hole under the action of the shearing driving member, and in the process of sliding along the sliding hole, the shearing knife is driven to perform shearing movements; the positioning arm can position the shearing knife to prevent it from exceeding a limited position.

[0050] Welding device: The welding device welds the ear straps arranged by the wiring device; the welding device is an ultrasonic welding device, including an ultrasonic signal generator, an upper die head, a lower die head, and a cooling fan. The ultrasonic signal generator can emit ultrasonic waves to weld the mask and the ear straps between the upper die head and the lower die head, and the cooling fan cools the ultrasonic generator; the upper die head can move up and down so that it can be close to the lower die head to weld the mask. The upper die head is driven by the die head drive.

[0051] The working process of the present invention is:

[0052] 1. The wire guide works and the ear strap is introduced into the guide wheel of the wire puller.

[0053] 2. The working process of the wire puller is as follows: the wire pressing head presses down the wire pressing groove under the action of the wire pressing head driving member, thereby pressing the ear band located between the wire pressing groove and the wire pressing head. Next, the wire pulling motor rotates forward, and the wire pulling belt is driven to rotate through the wire pulling driving wheel. Since the clamp and the wire pressing device are respectively located on the upper and lower rings of the wire pulling belt, the wire pressing device and the clamp move toward the middle along the guide rail at the same time. When the wire pressing device and the clamp are close, the clamp driving member works so that the clamp clamps the ear band exposed from the wire pressing device. Next, the wire pressing head driving member is released, and the wire pressing head loosens the ear band; next, the wire pulling motor reverses, and the wire pressing device and the clamp move to both sides at the same time. When the wire pressing device moves, the ear band is not clamped in the wire pressing groove, and the wire pressing device returns empty. While the clamp moves, the ear band can be pulled. When the wire pressing device and the clamp move to the limit positions on both sides, the wire pressing head driving member works again to tighten the ear band.

[0054] 3. The wiring device works as follows: the wiring clamp rotates to the top of the ear band under the action of the rotary drive member, and then moves downward to the same height as the ear band under the action of the first lifting drive member, and then clamps the ear band under the action of the clamp drive member. At this time, the shear intervenes to cut the ear band; then it rises under the action of the first lifting drive member, and then translates and rotates along the clamp guide rail under the action of the travel drive member and the rotary drive member, and finally moves downward under the action of the second lifting drive member.

[0055] 4. The welding device works to weld the ear strap sent by the wiring device to the mask. At this time, one ear strap of the mask is welded.

[0056] 5. The wire puller, wire router, shear and welding device at the next workstation work in the same working mode to weld the other ear strap of the mask.

[0057] When the wiring device is working, the strokes of the travel driving members of the wiring devices on both sides of the transmission line are different. Among them, the strokes of the first wiring device and the third wiring device are shorter, and the strokes of the second wiring device and the fourth wiring device are longer, so as to ensure that the ear straps are located at the diagonal position of the mask.

Claims

1. A device for cross-welding mask ear straps, characterized in that: include, Transmission line: The transmission line sequentially transmits the masks without welded ear straps to the processing station, and then transmits the masks with welded ear straps to the external container; Wire guide: The wire guide pulls the ear strap in advance to prepare for the subsequent process; Wire puller: The wire puller pulls the ear strap sent by the wire guide from one side of the transmission line to the other side, and cuts the ear strap with the cooperation of the shear, so that the two ends of the ear strap are located on both sides of the transmission line respectively, preparing for the subsequent process; Wiring device: the wiring device arranges an ear strap prepared by the wire puller at the diagonal point of the mask; Cutter: The cutter can cut the ear straps clamped by the wiring device; Welding device: the welding device performs welding operation on the ear strap arranged by the wiring device; Base frame: the transmission line, the wire guide, the wire puller, the wiring device, and the welding device are all installed on the base frame; The wire puller comprises a wire puller base, a wire pull belt, a guide rail, a chuck, and a wire presser. The wire puller base is fixedly connected to the base frame, and the wire pull belt is driven by a wire pull motor through a wire pull driving wheel arranged on the wire puller base; the guide rail is arranged in parallel with the wire pull belt and connected to the wire puller base; the chuck and the wire presser can slide on the guide rail, and the chuck and the wire presser can move in opposite directions with the movement of the wire pull belt; The wire crimping device comprises a wire crimping groove, a wire crimping head, and a guide wheel. The guide wheel guides the ear strap sent by the wire guide, and the ear strap then passes through the wire crimping groove to expose a portion of the ear strap; The crimping head is driven by a crimping head driving member; The clamp comprises a clamp driving member and a clamping jaw, wherein the clamp driving member can drive the clamping jaws to approach each other to clamp the ear strap, and can also loosen the clamping jaws to release the ear strap; When the wire crimper approaches the clamp, the wire crimping head moves downward to press the ear strap and drive the ear strap to approach the clamp; when the wire crimper contacts the clamp, the clamp clamps the remaining ear strap; when the wire crimper moves away from the clamp, the wire crimping head moves upward to loosen the ear strap; The wiring device comprises a wiring clamp, a clamp driving member, a rotating driving member, a lifting driving member, a travel driving member, and a clamp guide rail; the clamp driving member can clamp or loosen the wiring clamp; the wiring clamp clamps the ear strap pulled by the wire puller; The rotary drive member can make the chuck perform a rotary motion; the lifting drive member can make the chuck perform a lifting motion; The travel drive member can move the chuck along the chuck guide rail; The lifting drive member can enable the wiring clamp to complete two lifting strokes, that is, it can enable the clamp to be in the highest position, the middle position and the lowest position; it includes a first lifting drive member and a second lifting drive member, the first lifting drive member enables the wiring clamp to complete the first lifting stroke, and the second lifting drive member enables the wiring clamp to complete the second lifting stroke.

2. The device for cross-welding mask ear straps according to claim 1, characterized in that: The transmission line includes a plurality of mask stations arranged in a row. The mask station body is a rigid structure. The mask stations are hinged to form a ring chain structure after being hinged. The driving mechanism drives the stepping of the structure through the transmission line driving wheel.

3. The device for cross-welding mask ear straps according to claim 2, characterized in that: The mask station is provided with mask positioning protrusions at the head and tail of the forward direction of the transmission line, and the positioning protrusions ensure that the mask is correctly placed in the mask station.

4. The device for cross-welding mask ear straps according to claim 1, characterized in that: The wire guide includes a wire guide motor, a wire guide driving wheel fixed to the wire guide motor, and a wire guide driven wheel matched with the wire guide driving wheel. The ear belt is pulled by the friction force of the wire guide driving wheel and the wire guide driven wheel, passes around the intermediate wheel and goes to the idle wheel, and then enters the wire puller through the ear belt hole after passing through the steering wheel.

5. The device for cross-welding mask ear straps according to claim 4, characterized in that: When the ear strap passes through the intermediate wheel, the intermediate wheel slides upward on the sliding column under the pulling force of the ear strap and contacts the adjustment column. The adjustment column is tightly matched with the sliding column. The tightness of the ear strap can be adjusted by changing the position of the adjustment column on the sliding column.

6. The device for cross-welding mask ear straps according to claim 1, characterized in that: The clamping head driving component and the wire crimping head driving component are hydraulic cylinders.

7. The device for cross-welding mask ear straps according to claim 1, characterized in that: The pull-wire belt is a toothed belt.

8. The device for cross-welding mask ear straps according to claim 1, characterized in that: The guide rails are two circular rods arranged in parallel.

9. The device for cross-welding mask ear straps according to claim 1, characterized in that: The clamp is fixedly connected to the upper ring of the cable pull belt, and the wire presser is fixedly connected to the lower ring of the cable pull belt. The clamp and the wire presser are respectively located on both sides of the cable pull belt after being fixed.

10. The device for cross-welding mask ear straps according to claim 1, characterized in that: There are four wiring devices, which are grouped in pairs. Each group is arranged on both sides of the transmission line, and each group of wiring devices completes the wiring of one ear strap.

11. The device for cross-welding mask ear straps according to claim 1, characterized in that: The shear is arranged below the wire puller, and includes a shearing knife, a driving arm, a positioning arm, a shearing driving member, a shearing shaft, and a sliding hole. The shearing knife has two pieces and performs shearing motion around the shearing shaft. The driving arm slides along the sliding hole under the action of the shearing driving member, and in the process of sliding along the sliding hole, the shearing knife is driven to perform shearing motion; the positioning arm can position the shearing knife to prevent it from exceeding a limited position.

12. The device for cross-welding mask ear straps according to claim 1, characterized in that: The welding device is an ultrasonic welding device, including an ultrasonic signal generator, an upper die head, a lower die head, and a cooling fan. The ultrasonic signal generator can emit ultrasonic waves to weld the mask and ear straps between the upper die head and the lower die head, and the cooling fan cools the ultrasonic signal generator; the upper die head can move in the up and down directions so that it can be close to the lower die head to weld the mask.

13. The device for cross-welding mask ear straps according to claim 12, characterized in that: The upper die head is driven by a die head driving member.

14. The device for cross-welding mask ear straps according to claim 1, characterized in that: Follow the steps below to work: The thread guide works to guide the ear strap into the guide wheel of the thread puller; The working process of the wire puller is as follows: the wire crimping head presses the wire crimping groove downward under the action of the wire crimping head driving member, thereby pressing the ear band located between the wire crimping groove and the wire crimping head; next, the wire pulling motor rotates forward, and drives the wire pulling belt to rotate through the wire pulling driving wheel. Since the clamp and the wire crimper are respectively located on the upper and lower rings of the wire pulling belt, the wire crimper and the clamp move toward the middle along the guide rail at the same time; when the wire crimper and the clamp are close to each other, the clamping claw driving member works to make the clamping claw clamp the ear band exposed from the wire crimper; next, the wire crimping head driving member is released, and the wire crimping head loosens the ear band; next, the wire pulling motor reverses, and the wire crimper and the clamp move to both sides at the same time. When the wire crimper moves, the ear band is not clamped in the wire crimping groove, and the wire crimper returns empty. While the clamp moves, it can pull the ear band; when the wire crimper and the clamp move to the limit positions on both sides, the wire crimping head driving member works again to press the ear band tightly; The wiring device works in the following process: the wiring clamp rotates to the top of the ear band under the action of the rotary drive member, then moves downward to the same height as the ear band under the action of the first lifting drive member, and then clamps the ear band under the action of the clamp drive member. At this time, the shear intervenes to cut the ear band; then it rises under the action of the first lifting drive member, and then translates and rotates along the clamp guide rail under the action of the travel drive member and the rotary drive member, and finally moves downward under the action of the second lifting drive member; The welding device works to weld the ear strap sent by the wiring device to the mask. At this time, one ear strap of the mask is welded; The wire puller, wire router, shear and welding device at the next workstation work in the same working mode to weld the other ear strap of the mask.

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