Automatic sewing production line for backless garment

Abstract

The application relates to an unmanned back piece automatic sewing production line and belongs to the technical field of airbag back piece sewing. The unmanned back piece automatic sewing production line comprises a material placing frame, a transfer frame, a transmission frame, a sewing frame, a material collecting frame, a jig and a blanking frame. The transmission frame is located between the transfer frame and the material collecting frame. The jig is used for placing cloth constituting a back piece. The transmission frame is provided with a first speed-up chain and a second speed-up chain. The transfer frame is slidably connected with a transfer frame. The material collecting frame is slidably connected with a material collecting frame. When the transfer frame and the material collecting frame slide to be flush with the first speed-up chain, the jig located on the transfer frame can slide to the material collecting frame through the first speed-up chain. When the transfer frame and the material collecting frame slide to be flush with the second speed-up chain, the jig located on the material collecting frame can slide to the transfer frame through the second speed-up chain, so that the back piece transfer efficiency is improved, and the back piece sewing efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of airbag rear panel sewing, and in particular to an unmanned automated rear panel sewing production line. Background Technology

[0002] Automotive airbags are a crucial component of automotive safety systems, designed to protect occupants from further injury in the event of a collision. Current automotive airbag technology includes a rear panel, which is constructed by stacking and sewing multiple pieces of fabric of different shapes. The sewing of the rear panel is done by a sewing machine, and the process of stacking the fabric pieces to the sewing machine is mostly done manually. The rear panel is then removed manually. This results in low transfer efficiency of the rear panel during production, thus affecting the overall sewing efficiency. Summary of the Invention

[0003] In order to improve the transfer efficiency of the back piece and thus improve the sewing efficiency of the back piece, this application provides an unmanned automatic sewing production line for the back piece.

[0004] The unmanned automated back panel sewing production line provided in this application adopts the following technical solution:

[0005] An unmanned automated back panel sewing production line for sewing the back panel of an airbag includes a material placement rack, a transfer rack, a conveyor rack, a sewing rack, a receiving rack, a fixture, and a feeding frame. The conveyor rack is located between the transfer rack and the receiving rack. The material placement rack is located at one end of the transfer rack away from the conveyor rack. The feeding frame is located at one end of the receiving rack away from the conveyor rack. There are two sewing racks, which are symmetrically arranged on both sides of the conveyor rack. The fixture is used to place the fabric that constitutes the back panel.

[0006] The transmission frame is equipped with a first speed chain and a second speed chain, which are arranged along the height direction of the transmission frame. A transfer frame is slidably connected to the transfer frame, and a receiving frame is slidably connected to the receiving frame. Both the transfer frame and the receiving frame slide along the height direction of the transmission frame. When the transfer frame and the receiving frame slide to be level with the first speed chain, the fixture on the transfer frame can slide onto the receiving frame via the first speed chain. When the transfer frame and the receiving frame slide to be level with the second speed chain, the fixture on the receiving frame can slide onto the transfer frame via the second speed chain.

[0007] The material rack is equipped with a material placement plate for placing fabric. The material rack is also equipped with a feeding mechanism for moving the fabric on the material placement plate to a fixture located on a transfer frame. The transfer frame is equipped with a transfer mechanism for sequentially moving the fixture on the transfer frame to two sewing frames. The sewing frames are equipped with a sewing mechanism for sewing the back piece. The material receiving rack is equipped with a material receiving mechanism for moving the back piece on the fixture to the unloading frame.

[0008] By adopting the above technical solution, during the sewing process of the back piece, the fabric on the placement plate is first moved sequentially to the fixture on the transfer frame by the feeding mechanism to complete the loading of the fixture. Then, the fixture on the transfer frame is moved to the transmission frame by the first double-speed chain. Next, the transfer mechanism moves the fixture on the transmission frame sequentially to two sewing frames for sewing processing. After the sewing of the back piece, the fixture is placed on the transmission frame by the transfer mechanism and transferred to the receiving frame. The receiving mechanism moves the back piece on the fixture to the unloading frame to complete the receiving of the back piece. The transfer frame and the receiving frame slide to be flush with the second double-speed chain. The fixture on the receiving frame can move to the transfer frame under the action of the second double-speed chain to realize the return of the fixture. The transfer and sewing of the back piece does not require manual assistance. The cooperation between the first double-speed chain, the second double-speed chain and the transfer frame and the receiving frame improves the transfer efficiency of the back piece, thereby improving the sewing efficiency of the back piece.

[0009] Preferably, the transfer mechanism includes a transfer frame erected between the transmission frame and the transfer frame, the transfer frame being connected to the transfer frame, a transfer plate being slidably connected to the side of the transfer frame facing the transmission frame, the transfer plate sliding along the height direction of the transmission frame, and a transfer component for controlling the sliding of the transfer plate being provided on the transfer frame;

[0010] The fixture is provided with clamping posts, and the transfer plate is provided with a control plate. The control plate has clamping slots for the clamping posts to fit into. The control plate is also rotatably connected to a clamping arc plate. The rotation of the clamping arc plate controls the connection and closure of the clamping slots with the outside world. The control plate is provided with clamping components for controlling the rotation of the clamping arc plate.

[0011] By adopting the above technical solution, with the cooperation of the clamping arc plate and the clamping column on the fixture, the control plate is fixed to the fixture. Then, the sliding of the transfer plate can drive the fixture to slide, thereby realizing the transfer of the fixture. Moreover, the fixture is not easy to separate from the control plate, which improves the reliability of the transfer fixture.

[0012] Preferably, the transfer plate is provided with a first cylinder, and a second cylinder is connected to the piston rod of the first cylinder. The piston rod of the second cylinder is connected to the control plate. The first cylinder is used to drive the control plate to slide along the height direction of the transfer frame, and the second cylinder is used to drive the control plate to slide perpendicular to the height direction of the transfer frame.

[0013] By adopting the above technical solution, with the cooperation of the first cylinder and the second cylinder, it is easy for the control plate to move to the clamping column and embed into the clamping groove, thereby further improving the reliability of the transfer fixture through the cooperation of the clamping arc plate and the clamping column.

[0014] Preferably, the transfer frame, the transmission frame, and the receiving frame are all slidably connected to limiting protrusions, and the fixture is provided with a limiting part that cooperates with the limiting protrusion. After the limiting protrusion slides, it can cooperate with the limiting part to restrict the sliding of the fixture. The transfer frame, the transmission frame, and the receiving frame are correspondingly provided with limiting parts for controlling the sliding of the limiting protrusion.

[0015] By adopting the above technical solution, the fixture can be stopped at the designated position of the transfer frame, the conveyor frame and the receiving frame by setting the limiting protrusion. This makes it convenient for the feeding mechanism to move the fabric on the material plate to the fixture located on the transfer frame, for the transfer mechanism to make the fixture supporting the fabric flow between the conveyor frame and the sewing frame, and for the receiving mechanism to move the back piece on the fixture to the unloading frame.

[0016] Preferably, both the transfer frame and the receiving frame are slidably connected to a support portion. When the support portion slides, it can drive the transfer frame or the receiving frame to slide. The support portion is provided with a slide rail, which is arranged along the length direction of the transfer frame. The transfer frame and the receiving frame are provided with sliding grooves that cooperate with the slide rail. The support portion is provided with an abutting elastic member. Under the action of the abutting elastic member, the transfer frame or the receiving frame is pressed against the transfer frame.

[0017] By adopting the above technical solution, the support part can drive the transfer frame or receiving frame to slide when it slides, which improves the stability of the transfer frame and receiving frame. By setting the abutting elastic element, the transfer frame or receiving frame is pressed against the transmission frame under the action of the abutting elastic element. Therefore, during the transfer process of the fixture, the fixture is not easy to get stuck between the transfer frame or receiving frame and the transmission frame, thereby improving the stability of the transfer fixture and making the fixture less prone to damage.

[0018] Preferably, a locking baffle is slidably connected to the receiving frame. After the locking baffle slides, it abuts against or separates from the supporting part. The receiving frame is provided with a locking element for controlling the sliding of the locking baffle.

[0019] By adopting the above technical solution, during the process of the fixture sliding from the transfer frame toward the receiving frame, the receiving frame may slide away from the transfer frame under the force of the fixture during transfer. When the locking baffle slides to abut against the support part, the receiving frame is fixed to the support part under the friction between the locking baffle and the support part, so that the receiving frame is not easy to slide relative to the transfer frame. When the locking baffle slides to separate from the support part, the receiving frame can slide on the support part with the cooperation of the slide rail and the slide groove.

[0020] Preferably, the locking component includes a control block slidably disposed within the receiving frame. The receiving frame has a control groove for the control block to slide. The locking baffle has a locking block. The receiving frame has a locking groove for the locking block to slide. The locking groove communicates with the control groove. The control block has a locking slot for the locking block to engage. After the control block slides, the locking groove communicates with or is misaligned with the locking slot. The receiving frame has a locking elastic element for pushing the locking block toward the control block to slide. Guide slopes are provided on both sides of the locking slot. The receiving frame has a reset elastic element for pushing the control block to slide until it is misaligned with the locking groove. The transfer frame has an operating element for pushing the locking block to slide until it communicates with the locking groove.

[0021] By adopting the above technical solution, when the control block slides to the point where the locking groove and the locking slot are connected, the locking block can be pressed against the inner wall of the locking slot under the action of the locking elastic element. At this time, the locking baffle and the supporting part are pressed against each other. When the control block slides to the point where the locking groove and the locking slot are misaligned, the end of the locking block away from the locking baffle is in contact with the outer wall of the control block. At this time, the locking baffle and the supporting part are separated, so that both sides of the locking slot are provided with guide slopes. Through the setting of the guide slopes, the locking block located in the locking slot can slide to be in contact with the outer wall of the control block. Through the setting of the reset elastic element, the reset of the control block is convenient. The sliding of the control block can conveniently control the sliding and locking between the receiving frame and the supporting part.

[0022] Preferably, the operating component includes an operating block slidably disposed on a transmission frame. The transmission frame has an operating groove for the operating block to slide along. The transmission frame also has an operating elastic element for pushing the operating block toward the receiving frame. When the receiving frame slides to be flush with the first double-speed chain, the control groove communicates with the operating groove. The operating block can slide down into the control groove under the action of the operating elastic element. At this time, the control block slides to the locking groove and communicates with the locking groove. The end of the operating block located outside the transmission frame is semi-circular.

[0023] By adopting the above technical solution, when the receiving frame slides away from the ground, it can first slide to contact the operating block. Then, as the receiving frame slides, the operating block first slides into the operating groove. When the receiving frame slides to be level with the first double-speed chain, the operating block is embedded in the control groove under the action of the operating elastic element. Since the end of the operating block located outside the transmission frame is set in a semi-circular shape, on the one hand, no other driving source is needed, which makes it easy to lock the sliding of the receiving frame. On the other hand, it provides guidance for the sliding of the operating block into the control groove.

[0024] Preferably, a feeding block is slidably connected to the transmission frame, and a feeding chute for the feeding block to slide on the transmission frame is provided. The feeding chute is connected to the operating chute. The end of the feeding block facing the receiving frame is provided with a feeding inclined surface, and the end of the feeding block located in the feeding chute is provided with an operating inclined surface. When the operating block is completely housed in the operating chute, the end of the feeding block with the feeding inclined surface is located outside the feeding chute. The transmission frame is provided with a feeding elastic element for controlling the feeding block to slide into the transmission frame.

[0025] By adopting the above technical solution, when the receiving frame slides towards the ground, the operating block located in the control chute first slides down under the action of the receiving frame until it is completely housed in the operating chute. During this process, the unloading block slides away from the ground. By setting the unloading and unloading inclined surfaces of the unloading block, the fixture can be separated from the first speed chain in time during the sliding of the receiving frame. The fixture is less likely to collide with the receiving frame, which improves the service life of the fixture to a certain extent. Moreover, the sliding of the unloading block does not require the assistance of other drive sources.

[0026] Preferably, there are two transfer plates, one of which is used to move a jig onto one of the sewing frames, and the other transfer plate is used to move another jig onto another sewing frame. Both transfer plates are provided with anti-mistake posts, with the end of the anti-mistake post away from the transfer plate facing the transfer frame. The anti-mistake posts on the two transfer plates are arranged opposite to each other.

[0027] By adopting the above technical solution and setting the anti-fouling column, the two transfer plates are less likely to collide and be damaged during the sliding process, thus extending the service life of the device.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. During the sewing process of the back piece, the fabric on the feeding plate is first moved sequentially to the fixture on the transfer frame by the feeding mechanism to complete the loading of the fixture. Then, the fixture on the transfer frame is moved to the transmission frame by the first double-speed chain. Next, the transfer mechanism moves the fixture on the transmission frame sequentially to two sewing frames for sewing processing. After the sewing of the back piece, the fixture is placed on the transmission frame by the transfer mechanism and transferred to the receiving frame. The receiving mechanism moves the back piece on the fixture to the unloading frame to complete the receiving of the back piece. The transfer frame and the receiving frame slide to be flush with the second double-speed chain. The fixture on the receiving frame can move to the transfer frame under the action of the second double-speed chain to realize the return of the fixture. The transfer and sewing of the back piece does not require manual assistance. The cooperation between the first double-speed chain, the second double-speed chain and the transfer frame and the receiving frame improves the transfer efficiency of the back piece, thereby improving the sewing efficiency of the back piece.

[0030] 2. With the cooperation of the first cylinder and the second cylinder, the control plate can be moved to the clamping column embedded in the clamping groove. With the cooperation of the clamping arc plate and the clamping column on the fixture, the control plate and the fixture are fixed. The sliding of the transfer plate can drive the fixture to slide, thereby realizing the transfer of the fixture. Moreover, the fixture is not easy to separate from the control plate, which improves the reliability of the transfer fixture. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0032] Figure 2 This is a top view of Embodiment 1 of this application.

[0033] Figure 3 This is a side view of Embodiment 1 of this application.

[0034] Figure 4 yes Figure 2 Enlarged view of part A.

[0035] Figure 5 yes Figure 2 Enlarged view of part B.

[0036] Figure 6 This is a schematic diagram of the receiving frame and transmission rack structure of Embodiment 2 of this application.

[0037] Figure 7 This is a schematic diagram of the separation structure of the receiving frame and the transmission frame in Embodiment 2 of this application.

[0038] Figure 8 This is a schematic diagram of the locking structure of the receiving frame and the transmission frame in Embodiment 2 of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Material rack; 11. Material plate; 111. Receiving cavity; 12. Feeding mechanism; 121. Feeding suction cup assembly; 122. Feeding robot; 2. Transfer frame; 21. Transfer frame; 3. Transmission frame; 31. First speed chain; 32. Second speed chain; 33. Limiting protrusion; 34. Operating block; 341. Operating spring; 35. Unloading block; 351. Unloading chute; 352. Unloading spring; 4. Sewing frame; 41. Sewing mechanism; 5. Receiving rack; 51. Receiving frame; 52. Receiving mechanism; 521. Receiving suction cup assembly; 522. Sliding plate; 523. Receiving linear motor; 5 24. Sliding cylinder; 53. Locking baffle; 531. Locking block; 532. Locking spring; 54. Control block; 541. Locking groove; 542. Return spring; 6. Fixture; 61. Clamping column; 62. Limiting part; 7. Unloading frame; 8. Transfer frame; 81. Transfer plate; 811. Anti-fooling column; 812. First cylinder; 813. Second cylinder; 82. Transfer linear motor; 83. Control board; 831. Clamping groove; 832. Clamping arc plate; 833. Clamping cylinder; 834. Limiting plate; 9. Supporting part; 91. Supporting linear motor; 92. Slide rail; 921. Sliding groove; 93. Abutment spring. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0041] Example 1:

[0042] This application discloses an unmanned automated rear panel sewing production line for sewing the rear panel of an airbag, as shown in the following embodiments. Figure 1 and Figure 2 The system includes a material placement rack 1, a transfer rack 2, a transmission rack 3, two sewing racks 4, a receiving rack 5, a fixture 6, and a cutting frame 7. In terms of overall layout, the transmission rack 3 is located between the transfer rack 2 and the receiving rack 5, while the cutting frame 7 is located at the end of the receiving rack 5 away from the transmission rack 3. The transfer rack 2, transmission rack 3, receiving rack 5, and cutting frame 7 are arranged sequentially along the length of the transmission rack 3. The material placement rack 1 is located at the end of the transfer rack 2 away from the transmission rack 3. The material placement rack 1 and the transfer rack 2 are placed diagonally opposite each other and the material placement rack 1 and the transfer rack 2 are fixed. The two sewing racks 4 are symmetrically arranged on both sides of the transmission rack 3. The fixture 6 is used to place the fabric that constitutes the back piece.

[0043] Reference Figure 3The transmission frame 3 is equipped with a first double-speed chain 31 and a second double-speed chain 32, which are arranged along the height direction of the transmission frame 3. The first double-speed chain 31 is located above the second double-speed chain 32. A transfer frame 21 is slidably connected to the transfer frame 2, and a receiving frame 51 is slidably connected to the receiving frame 5. Both the transfer frame 21 and the receiving frame 51 slide along the height direction of the transmission frame 3. When the transfer frame 21 and the receiving frame 51 slide to be flush with the first double-speed chain 31, the fixture 6 located on the transfer frame 21 can slide to the receiving frame 51 via the first double-speed chain 31. When the transfer frame 21 and the receiving frame 51 slide to be flush with the second double-speed chain 32, the fixture 6 located on the receiving frame 51 can slide to the transfer frame 21 via the second double-speed chain 32. This enables the return of the fixture 6 without the need for manual adjustment of the fixture 6, thus improving the sewing efficiency of the back piece.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The material rack 1 is equipped with a material rack 11 for placing fabric. The material rack 11 has a receiving cavity 111 for accommodating the fabric. The receiving cavity 111 makes it difficult for the fabric placed on the material rack 11 to shift relative to the material rack 11. Since the back piece is composed of multiple pieces of fabric, multiple material racks 11 are also required. The material rack 11 is equipped with a feeding mechanism 12. The feeding mechanism 12 is used to move the fabric on the material rack 11 sequentially to the fixture 6 located on the transfer frame 21 to complete the feeding of the fixture 6. The feeding mechanism 12 includes a feeding suction cup assembly 121 and a feeding robot 122. The feeding robot 122 is fixed on the material rack 1, and the feeding suction cup assembly 121 is fixed on the feeding robot 122. The feeding robot 122 and the feeding suction cup assembly 121 cooperate to move the fabric on the material rack 11 to the fixture 6 located on the transfer frame 21.

[0045] Reference Figure 1 and Figure 2The receiving rack 5 is equipped with a receiving mechanism 52, which is used to move the rear piece on the jig to the unloading frame 7 to complete the receiving of the rear piece. The receiving mechanism 52 includes a receiving suction cup assembly 521 and a sliding plate 522. The sliding plate 522 is slidably disposed on the receiving rack 5. The receiving rack 5 is equipped with a receiving linear motor 523 for driving the sliding plate 522 to slide. The receiving suction cup assembly 521 is slidably disposed on the sliding plate 522. The sliding plate 522 is equipped with a sliding cylinder 524 for controlling the sliding of the receiving suction cup assembly 521. The sliding plate 522, the sliding cylinder 524, the receiving linear motor 523 and the receiving suction cup assembly 521 cooperate to move the rear piece located on the receiving frame 51 into the unloading frame 7. Both the feeding suction cup assembly 121 and the receiving suction cup assembly 521 include photoelectric sensors. By setting the photoelectric sensors, it is possible to determine whether the feeding suction cup assembly 121 has grabbed the fabric and whether the receiving suction cup has grabbed the back piece, thereby improving the reliability of feeding through the feeding mechanism 12 and receiving through the receiving mechanism 52.

[0046] Reference Figure 1 , Figure 2 and Figure 3 The sewing frame 4 is equipped with a sewing mechanism 41 for sewing the back piece. The fabric used to form the back piece is placed sequentially on the jig 6 located at the transfer frame 21 by the feeding mechanism 12. The transfer frame 2 is equipped with a transfer mechanism. The transfer mechanism is used to move the jig 6 on the transfer frame 3 to one of the sewing frames 4 for sewing processing, and then move the jig 6 to another sewing frame 4 for sewing processing. Finally, the transfer mechanism places the jig 6 on the transfer frame 3 and transfers it to the receiving frame 51.

[0047] Reference Figure 1 , Figure 2 and Figure 3 The transfer mechanism includes a transfer frame 8 installed between the transfer frame 3 and the intermediate frame 2. The transfer frame 8 is fixed to the intermediate frame 2. A transfer plate 81 is slidably connected to the side of the transfer frame 8 facing the transfer frame 3. The transfer plate 81 slides along the height direction of the transfer frame 3. A transfer component for controlling the sliding of the transfer plate 81 is fixed on the transfer frame 8. In this embodiment, the transfer component is a transfer linear motor 82. Since the fixture 6 needs to undergo two transfers between the transfer frame 3 and the two sewing frames 4, two sliding transfer plates 81 can be set. One transfer plate 81 is used to move the fixture 6 to one of the sewing frames 4, and the other transfer plate 81 is used to move the other fixture 6 to the other sewing frame 4. Compared with one transfer plate, the efficiency of the fixture 6 transfer is improved, thereby improving the sewing efficiency of the back piece.

[0048] Reference Figure 4 and Figure 5Anti-misalignment posts 811 are fixed on the two transfer plates 81. The end of the anti-misalignment post 811 away from the transfer plate 81 faces the transfer frame 3. The anti-misalignment posts 811 on the two transfer plates 81 are arranged opposite to each other. With the anti-misalignment posts 811, the two transfer plates 81 are not easy to collide and be damaged during the sliding process, thus extending the service life of the device.

[0049] Reference Figure 4 and Figure 5 The fixture 6 has a clamping column 61 integrally formed on it. A first cylinder 812 is fixed on the transfer plate 81. A second cylinder 813 is fixed on the piston rod of the first cylinder 812. A control plate 83 is fixedly connected to the piston rod of the second cylinder 813. The first cylinder 812 is used to drive the control plate 83 to slide along the height direction of the transfer frame 8. The second cylinder 813 is used to drive the control plate 83 to slide perpendicular to the height direction of the transfer frame 8. The control plate 83 has a clamping groove 831 for the clamping column 61 to fit into. The opening of the clamping groove 831 is flared, so as to facilitate the clamping column 61 to be embedded in the clamping groove 831.

[0050] Reference Figure 4 and Figure 5 A clamping arc plate 832 is rotatably connected to the control plate 83. The rotation of the clamping arc plate 832 controls the connection and closure of the clamping groove 831 with the outside world. The control plate 83 is equipped with clamping components for controlling the rotation of the clamping arc plate 832. These components include a clamping cylinder 833 and a limiting plate 834. The limiting plate 834 is fixed to the control plate 83, and the clamping groove 831 passes through the limiting plate 834. A space is left between the limiting plate 834 and the control plate 83 for the rotation of the clamping arc plate 832. The limiting plate 834 provides guidance for the rotation of the clamping arc plate 832, thus facilitating the control of the connection and closure of the clamping groove 831 with the outside world. The clamping cylinder 833 is fixed to the control plate 83, and its piston rod is rotatably connected to the clamping arc plate 832, enabling the clamping cylinder 833 to drive the clamping arc plate 832 to rotate. The control board 83 is equipped with two clamping slots 831, which improves the reliability of the transfer fixture 6.

[0051] Reference Figure 4 and Figure 5The transfer plate 81 slides down to the top of the transfer frame 3 under the action of the transfer motor 82. First, the control plate 83 slides towards the transfer frame 3 and fits against the fixture 6 placed on the transfer frame 3 via the first cylinder 812. Then, the control plate 83 slides away from the transfer frame 8 via the second cylinder 813. At this time, the control plate 83 can slide until the clamping post 61 abuts against the inner wall of the clamping groove 831. Finally, the clamping cylinder 833 controls the clamping arc plate 832 to rotate to close the clamping groove 831 and connect it to the outside, thus completing the fixation between the control plate 83 and the fixture 6. After the control plate 83 and the fixture 6 are fixed, the transfer plate 81 slides down to the top of the sewing frame 4 under the action of the transfer motor 82. In this embodiment, the sewing frame 4 is provided with a fixing component with the same structure as the control plate 83. The fixture 6 is provided with a fixing post that cooperates with the fixing component. The fixing post cooperates with the fixing component to restrict the movement of the fixture 6 during the operation of the sewing mechanism.

[0052] Reference Figure 2 Limiting protrusions 33 are slidably connected to the transfer frame 21, the transmission frame 3, and the receiving frame 51. The fixture 6 is provided with a limiting part 62 that cooperates with the limiting protrusions 33. After sliding, the limiting protrusions 33 cooperate with the limiting part 62 to restrict the sliding of the fixture 6, allowing the fixture 6 to remain at a designated position on the transfer frame 21, the transmission frame 3, and the receiving frame 51. This facilitates the movement of the fabric on the material plate 11 to the fixture 6 on the transfer frame 21 via the feeding mechanism 12, facilitates the transfer of the fixture 6 carrying the fabric between the transmission frame 3 and the sewing frame 4 via the transfer mechanism, and facilitates the movement of the back piece on the fixture 6 to the unloading frame 7 via the receiving mechanism 52. The transfer frame 21, the transmission frame 3, and the receiving frame 51 are correspondingly provided with limiting components for controlling the sliding of the limiting protrusions 33. In this embodiment, the limiting component is a limiting cylinder, and the piston rod of the limiting cylinder is fixed to the limiting protrusion 33.

[0053] Reference Figure 2 To improve the reliability of limiting the slippage of the fixture 6, limiting protrusions 33 are provided on both sides of the transfer frame 21, the transmission frame 3, and the receiving frame 51. For the transfer frame 21, the fixture 6 can slide from the transfer frame 21 toward the first double-speed chain 31 or slide toward the transfer frame 21 via the second double-speed chain 32. Therefore, the transfer frame 21 is provided with two limiting protrusions 33 on one side. One limiting protrusion 33 is used to limit the slippage of the fixture 6 from the transfer frame 21 toward the first double-speed chain 31, and the other limiting protrusion 33 is used to position the fixture 6 sliding from the second double-speed chain 32 toward the transfer frame 21.

[0054] Reference Figure 3Both the transfer frame 2 and the receiving frame 5 are slidably connected to a support part 9. The support part 9 slides along the height direction of the transfer frame 3. Both the transfer frame 2 and the receiving frame 5 are fixed with a support motor 91 for driving the support part 9 to slide. The support part 9 is connected to the bottom wall of the transfer frame 21 or the receiving frame 51. When the support part 9 slides, it can drive the transfer frame 21 or the receiving frame 51 to slide, thereby improving the stability of the sliding of the transfer frame 21 and the receiving frame 51.

[0055] The implementation principle of the unmanned automatic back panel sewing production line in Embodiment 1 of this application is as follows: During the sewing process of the back panel, the transfer frame 21 and the receiving frame 51 are first slid to be flush with the first double-speed chain 31. At this time, the fixture 6 is located on the transfer frame 21. The fabric on the material plate 11 is moved sequentially to the fixture 6 on the transfer frame 21 through the feeding mechanism 12. Then, the fixture 6 on the transfer frame 21 is moved to the transfer frame 3 through the first double-speed chain 31. The transfer frame 3 is then transferred by the transfer mechanism. After the fixture 6 is moved sequentially to the two sewing frames 4 for sewing, it is then placed on the transfer frame 3 by the transfer mechanism and transferred to the receiving frame 51. Finally, the back piece on the fixture is moved to the unloading frame 7 by the receiving mechanism 52 to complete the receiving of the back piece. Then, the transfer frame 21 and the receiving frame 51 are slid together to be flush with the second double speed chain 32. The fixture 6 on the receiving frame 51 can move to the transfer frame 21 under the action of the second double speed chain 32 to realize the return of the fixture 6.

[0056] Example 2:

[0057] The difference from Example 1 is that, referring to Figure 6 The support part 9 is integrally formed with a slide rail 92, which is arranged along the length of the transfer frame 3. The transfer frame 21 and the receiving frame 51 are provided with sliding grooves 921 that cooperate with the slide rail 92, restricting the shape of the slide rail 92 so that the transfer frame 21 or the receiving frame 51 is not easy to slide away from the support part 9 under the cooperation of the slide rail 92 and the sliding groove 921. The support part 9 is fixed with an abutting elastic member. In this embodiment, the supporting elastic member is an abutting spring 93. One end of the abutting spring 93 is fixed to the support part 9, and the other end of the abutting spring 93 is fixed to the corresponding transfer frame 21 or receiving frame 51. The transfer frame 21 or receiving frame 51 is pressed against the transfer frame 3 under the action of the abutting spring 93, thereby facilitating the transfer of the fixture 6.

[0058] Reference Figure 6 , Figure 7 and Figure 8During the process of the fixture 6 sliding from the transfer frame 3 toward the receiving frame 51, the receiving frame 51 may slide away from the transfer frame 3 under the force of the fixture 6 during transmission. Therefore, a locking baffle 53 is slidably connected on the receiving frame 51. The locking baffle 53 slides perpendicular to the sliding direction of the fixture 6. After the locking baffle 53 slides, it abuts against or separates from the support part 9. When the locking baffle 53 slides to abut against the support part 9, the receiving frame 51 is fixed to the support part 9 under the friction between the locking baffle 53 and the support part 9. When the locking baffle 53 slides to separate from the support part 9, the receiving frame 51 can slide on the support part 9 with the cooperation of the slide rail 92 and the sliding groove 921.

[0059] Reference Figure 7 and Figure 8 The receiving frame 51 is provided with a locking element for controlling the sliding of the locking baffle 53. The locking element includes a control block 54 slidably disposed within the receiving frame 51. The control block 54 slides along the length of the conveyor frame 3. The receiving frame 51 has a control groove for the control block 54 to slide. The locking baffle 53 is provided with a locking block 531. The receiving frame 51 has a locking groove for the locking block 531 to slide. The locking groove communicates with the control groove. The control block 54 has a locking slot 541 for the locking block 531 to engage. After the control block 54 slides, the locking groove communicates with or is misaligned with the locking slot 541. The receiving frame 51 is provided with a locking elastic element for pushing the locking block 531 toward the control block 54 to slide. In this embodiment, the locking elastic element is a locking spring 532. One end of the locking spring 532 is fixed to the locking block 531, and the other end of the locking spring 532 is fixed to the receiving frame 51.

[0060] Reference Figure 7 and Figure 8 When the control block 54 slides to the point where the locking groove and the locking slot 541 are connected, the locking block 531 can be pressed against the inner wall of the locking slot 541 under the action of the locking spring 532. At this time, the locking baffle 53 is pressed against the support part 9. When the control block 54 slides to the point where the locking groove and the locking slot 541 are misaligned, the end of the locking block 53 away from the locking baffle 53 is in contact with the outer wall of the control block 54. At this time, the locking baffle 53 is separated from the support part 9, so that both sides of the locking slot 541 are provided with guide slopes. Through the setting of the guide slopes, the locking block 531 located in the locking slot 541 can slide to be in contact with the outer wall of the control block 54. The receiving frame 51 is provided with a reset elastic element for pushing the control block 54 to slide into the locking groove 541 and the locking groove to be misaligned. In this embodiment, the reset elastic element is a reset spring 542. One end of the reset spring 542 is fixed to the receiving frame 51, and the other end of the reset spring 542 is fixed to the control block 54. The reset spring 542 facilitates the reset of the control block 54.

[0061] Reference Figure 7 and Figure 8 The transmission frame 3 is provided with an operating component for pushing the locking block 531 to slide into the locking groove 541 and communicating with the locking groove. The operating component includes an operating block 34 slidably disposed on the transmission frame 3. The transmission frame 3 is provided with an operating groove for the operating block 34 to slide. The transmission frame 3 is provided with an operating elastic component for pushing the operating block 34 toward the receiving frame 5. In this embodiment, the operating elastic component is an operating spring 341. One end of the operating spring 341 is fixed to the transmission frame 3, and the other end of the operating spring 341 is fixed to the operating block 34. When the receiving frame 51 slides to be flush with the first double-speed chain 31, the control groove communicates with the operating groove. The operating block 34 can be embedded in the control groove under the action of the operating spring 341 and push the control block 54 to slide into the locking groove 541 and communicate with the locking groove.

[0062] Reference Figure 7 and Figure 8 By setting the end of the operating block 34 outside the transmission frame 3 in a semi-circular shape, when the receiving frame 51 slides away from the ground, the receiving frame 51 can first slide to contact the operating block 34. Then, as the receiving frame 51 slides, the operating block 34 first slides into the operating groove. When the receiving frame 51 slides to be level with the first double-speed chain 31, the operating block 34 is embedded in the control groove under the action of the operating spring 341. By setting the end of the operating block 34 outside the transmission frame 3 in a semi-circular shape, on the one hand, no other driving source is needed, which makes it easy to lock the sliding of the receiving frame 51. On the other hand, it provides guidance for the sliding of the operating block 34 into the control groove.

[0063] Reference Figure 7 and Figure 8 The conveyor frame 3 is also slidably connected to a feeding block 35. The conveyor frame 3 is provided with a feeding chute 351 for the feeding block 35 to slide. The feeding chute 351 is connected to an operating chute. The operating block 34 can slide into the feeding chute 351. The feeding block 35 has a feeding inclined surface at one end facing the receiving frame 5, and an operating inclined surface at the other end of the feeding block 35 located in the feeding chute 351. When the operating block 34 slides down under the action of the receiving frame 51 until it is completely housed in the operating chute, the end of the feeding block 35 with the feeding inclined surface is located outside the feeding chute 351. The conveyor frame 3 is provided with a feeding elastic element for controlling the feeding block 35 to slide into the conveyor frame 3. In this embodiment, the feeding elastic element is a feeding spring 352. One end of the feeding spring 352 is fixed to the conveyor frame 3, and the other end of the feeding elastic element is fixed to the feeding block 35.

[0064] When the receiving frame 51 slides toward the ground, the operating block 34 located in the control chute first slides down under the action of the receiving frame 51 until it is completely housed in the operating chute. During this process, the unloading block 35 slides away from the ground. By setting the unloading and unloading ramps of the unloading block 35, the fixture 6 can be separated from the first double-speed chain 31 in time during the sliding of the receiving frame 51. The fixture 6 is less likely to collide with the receiving frame 51, which improves the service life of the fixture 6 to a certain extent.

[0065] The implementation principle of the unmanned automatic back panel sewing production line in Embodiment 2 of this application is as follows: When the take-up frame 51 slides away from the ground, the take-up frame 51 can first slide to contact the operating block 34. Then, as the take-up frame 51 slides, the operating block 34 first slides into the operating groove. When the take-up frame 51 slides to be level with the first double-speed chain 31, the operating block 34 is embedded in the control groove under the action of the operating spring 341, and pushes the control block 54 to slide to the locking groove 541 and connect with the locking groove. At this time, the locking baffle 53 slides down to abut against the support part 9 under the action of the locking spring 532, locking the take-up frame 51 along the length direction of the transmission frame 3.

[0066] When the receiving frame 51 slides toward the ground, the operating block 34 located in the control chute first slides down under the action of the receiving frame 51 until it is completely housed in the operating chute. During this process, the unloading block 35 slides away from the ground, causing the fixture 6 to separate from the first double-speed chain 31. When the receiving frame 51 slides to the point of separation from the transmission frame 3, the locking baffle 53 separates from the support part 9, and the unloading block 35 is completely housed in the unloading chute 351 under the action of the unloading spring 352, without affecting the subsequent sliding of other fixtures 6 toward the receiving frame 51.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An unmanned automated rear panel sewing production line for sewing the rear panel of an airbag, characterized in that: It includes a material placement rack (1), a transfer rack (2), a transmission rack (3), a sewing rack (4), a receiving rack (5), a fixture (6), and a cutting frame (7). The transmission rack (3) is located between the transfer rack (2) and the receiving rack (5). The material placement rack (1) is located at one end of the transfer rack (2) away from the transmission rack (3). The cutting frame (7) is located at one end of the receiving rack (5) away from the transmission rack (3). There are two sewing racks (4), which are symmetrically arranged on both sides of the transmission rack (3). The fixture (6) is used to place the fabric that forms the back piece. The transmission frame (3) is provided with a first double-speed chain (31) and a second double-speed chain (32), which are arranged along the height direction of the transmission frame (3). A transfer frame (21) is slidably connected to the transfer frame (2), and a receiving frame (51) is slidably connected to the receiving frame (5). Both the transfer frame (21) and the receiving frame (51) slide along the height direction of the transmission frame (3). When the transfer frame... When the transfer frame (21) and the receiving frame (51) slide to be aligned with the first double speed chain (31), the fixture (6) located on the transfer frame (21) can slide onto the receiving frame (51) via the first double speed chain (31). When the transfer frame (21) and the receiving frame (51) slide to be aligned with the second double speed chain (32), the fixture (6) located on the receiving frame (51) can slide onto the transfer frame (21) via the second double speed chain (32). The material rack (1) is provided with a material plate (11) for placing fabric. The material rack (1) is provided with a feeding mechanism (12) for moving the fabric on the material plate (11) to the fixture (6) located on the transfer frame (21). The transfer frame (2) is provided with a transfer mechanism for moving the fixture (6) on the transfer frame (3) sequentially to the two sewing frames (4). The sewing frame (4) is provided with a sewing mechanism (41) for sewing the back piece. The receiving frame (5) is provided with a receiving mechanism (52) for moving the back piece on the fixture to the unloading frame (7).

2. The unmanned automatic back panel sewing production line according to claim 1, characterized in that, The transfer mechanism includes a transfer frame (8) erected between the transmission frame (3) and the transfer frame (2). The transfer frame (8) is connected to the transfer frame (2). A transfer plate (81) is slidably connected to the side of the transfer frame (8) facing the transmission frame (3). The transfer plate (81) slides along the height direction of the transmission frame (3). The transfer frame (8) is provided with a transfer component for controlling the sliding of the transfer plate (81). The fixture (6) is provided with a clamping column (61), and the transfer plate (81) is provided with a control plate (83). The control plate (83) is provided with a clamping groove (831) for the clamping column (61) to fit into. The control plate (83) is also rotatably connected with a clamping arc plate (832). The connection and closure of the clamping groove (831) with the outside world are controlled by the rotation of the clamping arc plate (832). The control plate (83) is provided with a clamping component for controlling the rotation of the clamping arc plate (832).

3. The unmanned automatic back panel sewing production line according to claim 2, characterized in that, The transfer plate (81) is provided with a first cylinder (812), and a second cylinder (813) is connected to the piston rod of the first cylinder (812). The piston rod of the second cylinder (813) is connected to the control plate (83). The first cylinder (812) is used to drive the control plate (83) to slide along the height direction of the transfer frame (8), and the second cylinder (813) is used to drive the control plate (83) to slide perpendicular to the height direction of the transfer frame (8).

4. The unmanned automatic back panel sewing production line according to claim 1, characterized in that, The transfer frame (21), the transmission frame (3), and the receiving frame (51) are all slidably connected to limiting protrusions (33). The fixture (6) is provided with a limiting part (62) that cooperates with the limiting protrusions (33). After the limiting protrusions (33) slide, they can cooperate with the limiting part (62) to restrict the sliding of the fixture (6). The transfer frame (21), the transmission frame (3), and the receiving frame (51) are respectively provided with limiting members for controlling the sliding of the limiting protrusions (33).

5. The unmanned automatic back panel sewing production line according to claim 1, characterized in that, Both the transfer frame (2) and the receiving frame (5) are slidably connected to a support part (9). When the support part (9) slides, it can drive the transfer frame (21) or the receiving frame (51) to slide. The support part (9) is provided with a slide rail (92). The slide rail (92) is arranged along the length direction of the transmission frame (3). The transfer frame (21) and the receiving frame (51) are provided with sliding grooves (921) that cooperate with the slide rail (92). The support part (9) is provided with an abutting elastic member. The transfer frame (21) or the receiving frame (51) abuts against the transmission frame (3) under the action of the abutting elastic member.

6. The unmanned automatic back panel sewing production line according to claim 5, characterized in that, A locking baffle (53) is slidably connected to the receiving frame (51). After the locking baffle (53) slides, it abuts against or separates from the supporting part (9). The receiving frame (51) is provided with a locking element for controlling the sliding of the locking baffle (53).

7. The unmanned automatic back panel sewing production line according to claim 6, characterized in that, The locking component includes a control block (54) slidably disposed within the receiving frame (51). The receiving frame (51) has a control groove for sliding the control block (54). The locking baffle (53) has a locking block (531). The receiving frame (51) has a locking groove for sliding the locking block (531), which communicates with the control groove. The control block (54) has a locking slot (541) for engaging the locking block (531). After the control block (54) slides... The locking slide is connected to or misaligned with the locking groove (541). The receiving frame (51) is provided with a locking elastic element for pushing the locking block (531) to slide toward the control block (54). Both sides of the locking groove (541) are provided with guide slopes. The receiving frame (51) is provided with a reset elastic element for pushing the control block (541) to slide to the locking groove (541) and misaligned with the locking slide. The transmission frame (3) is provided with an operating element for pushing the locking block (531) to slide to the locking groove (541) and connected with the locking slide.

8. The unmanned automatic back panel sewing production line according to claim 7, characterized in that, The operating component includes an operating block (34) slidably mounted on the transmission frame (3). The transmission frame (3) has an operating groove for the operating block (34) to slide. The transmission frame (3) has an operating elastic element for pushing the operating block (34) toward the receiving frame (5). When the receiving frame (51) slides to be flush with the first double-speed chain (31), the control groove is connected to the operating groove. The operating block (34) can slide into the control groove under the action of the operating elastic element. At this time, the control block (54) slides to the locking groove (541) and is connected to the locking groove. The end of the operating block (34) located outside the transmission frame (3) is semi-circular.

9. The unmanned automatic back panel sewing production line according to claim 8, characterized in that, The transfer frame (3) is also slidably connected to a feeding block (35). The transfer frame (3) is provided with a feeding chute (351) for the feeding block (35) to slide. The feeding chute (351) is connected to the operating chute. The feeding block (35) has a feeding inclined surface at one end facing the receiving frame (5). The feeding block (35) has an operating inclined surface at one end inside the feeding chute (351). When the operating block (34) is completely housed in the operating chute, the end of the feeding block (35) with the feeding inclined surface is located outside the feeding chute (351). The transfer frame (3) is provided with a feeding elastic element for controlling the feeding block (35) to slide into the transfer frame (3).

10. The unmanned automatic back panel sewing production line according to claim 2, characterized in that, There are two transfer plates (81). One transfer plate (81) is used to move the jig (6) onto one of the sewing frames (4), and the other transfer plate (81) is used to move another jig (6) onto another sewing frame (4). Both transfer plates (81) are provided with anti-fool posts (811), with the end of the anti-fool post (811) away from the transfer plate (81) facing the transfer frame (3). The anti-foolproof posts (811) on the two transfer plates (81) are arranged opposite each other.

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