Bone position detection mechanism and double sheet splicing system

Abstract

The application provides a bone position detection mechanism and a double-piece splicing system. The bone position detection mechanism comprises a detection component support, an upper bone position detection sensor and a lower bone position detection sensor which are both installed on the detection component support, the upper bone position detection sensor and the lower bone position detection sensor are arranged in a stacking direction of front and rear piece cloth, the upper bone position detection sensor is used for detecting a bone position on the front piece cloth, and the lower bone position detection sensor is used for detecting a bone position on the rear piece cloth. The bone position detection mechanism is used for detecting the bone positions on the front and rear piece cloth, and automatic alignment of the bone positions can be realized by combining the bone position detection, the alignment accuracy of the bone positions on the front piece cloth and the bone positions on the rear piece cloth is effectively improved, and the splicing quality and efficiency of the double-piece are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewing equipment, in particular to a bone position detection mechanism and a double-piece sewing system comprising the same. BACKGROUND

[0002] In the sewing process of T-shirts, sweatshirts and other finished garments, the sewing of front and back pieces of cloth is involved. The front and back pieces of cloth are both composed of multiple pieces of cloth sewn together, and thus have stitches generated by the previous sewing process, which results in a region with a higher thickness than other regions at the joint of the front and back pieces of cloth. This region is called a bone position, i.e., the front and back pieces of cloth have a larger thickness at the bone position. In the sewing process of the front and back pieces of cloth, in order to ensure the comfort of the finished garment, there are special requirements for the bone position of the front and back pieces of cloth at the sleeve opening position, which requires that the bone positions of the front and back pieces of cloth at the sleeve opening position be strictly aligned. This step is called aligning the bone position, or simply aligning the bone.

[0003] Currently, the alignment of the bone position of the front and back pieces of cloth mainly relies on manual visual observation and manual adjustment, which is a manual alignment process. This requires a high skill level of workers, and manufacturers need to spend a certain amount of time to train the skill level of workers. In addition, the precision of the alignment of the bone position is ±3mm, and as the requirements for sewing quality of manufacturers continue to increase, the difficulty of the manual alignment process continues to rise, and the precision of the alignment of the bone position is difficult to be reliably guaranteed, which ultimately reduces the production quality and production efficiency. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a bone position detection mechanism that can automatically detect the bone position of the front and back pieces of cloth for automatic alignment of the bone position.

[0005] To achieve the above-mentioned purpose, the present application provides a bone position detection mechanism, which comprises a detection assembly support, and an upper bone position detection sensor and a lower bone position detection sensor both mounted on the detection assembly support. The upper bone position detection sensor and the lower bone position detection sensor are arranged vertically along the stacking direction of the front and back pieces of cloth. The upper bone position detection sensor is used to detect the bone position on the front piece of cloth, and the lower bone position detection sensor is used to detect the bone position on the back piece of cloth.

[0006] Further, the bone position detection mechanism further comprises an upper swing rod and a lower swing rod rotatably mounted on the detection assembly support, an upper detection plunger mounted on one end of the upper swing rod, a lower detection plunger mounted on one end of the lower swing rod, and an intermediate partition fixed to the detection assembly support, the upper detection plunger and the lower detection plunger being distributed on the upper and lower sides of the intermediate partition and being vertically opposite to each other, an upper material passing channel allowing the front piece cloth to pass being formed between the lower end of the upper detection plunger and the intermediate partition, a lower material passing channel allowing the back piece cloth to pass being formed between the upper end of the lower detection plunger and the intermediate partition, the upper bone position detection sensor being aligned with the other end of the upper swing rod, and the lower bone position detection sensor being aligned with the other end of the lower swing rod.

[0007] Further, the upper bone position detection sensor and the lower bone position detection sensor are both diffuse reflection sensors.

[0008] Further, the bone position detection mechanism further comprises an upper top rod support and a lower top rod support both fixed to the detection assembly support, an upper top rod assembly mounted on the upper top rod support, and a lower top rod assembly mounted on the lower top rod support; the upper top rod assembly comprises a cylinder and an upper top block mounted on the lower end of the piston rod of the cylinder, the upper top block abutting against the upper side of the upper swing rod; the lower top rod assembly comprises a cylinder and a lower top block mounted on the upper end of the piston rod of the cylinder, the lower top block abutting against the lower side of the lower swing rod.

[0009] Further, the weight of one end of the upper detection plunger mounted on the upper swing rod is greater than the weight of the other end of the upper swing rod, and the weight of one end of the lower detection plunger mounted on the lower swing rod is less than the weight of the other end of the lower swing rod.

[0010] When the piston rod of the cylinder in the upper top rod assembly does not extend downward, the upper swing rod is in a horizontal state.

[0011] When the piston rod of the cylinder in the lower top rod assembly does not extend upward, the lower swing rod is in a horizontal state.

[0012] Further, the end of the upper top rod support is fixed with an upper sensor mounting plate, the end of the lower top rod support is fixed with a lower sensor mounting plate, a first mounting adjusting groove is formed in the upper sensor mounting plate and the lower sensor mounting plate, the upper bone position detection sensor is mounted on the upper sensor mounting plate through a fixing screw penetrating the first mounting adjusting groove of the upper sensor mounting plate, and the lower bone position detection sensor is mounted on the lower sensor mounting plate through a fixing screw penetrating the first mounting adjusting groove of the lower sensor mounting plate.

[0013] Further, the bone position detection mechanism further comprises a pre-induction plunger, the pre-induction plunger being mounted on one end of the upper swing rod, and the pre-induction plunger and the upper detection plunger being distributed in sequence along the feeding direction of the front piece cloth.

[0014] Further, one end of the upper swing lever is provided with a U-shaped mounting portion, the U-shaped mounting portion has a first mounting arm and a second mounting arm distributed in sequence along the feeding direction of the front panel piece, the first mounting arm, the second mounting arm and one end of the lower swing lever are all provided with a second mounting adjusting groove extending horizontally and straight, the pre-induction plunger is installed on the first mounting arm through a fixing screw arranged in the second mounting adjusting groove of the first mounting arm, the upper detection plunger is installed on the second mounting arm through a fixing screw arranged in the second mounting adjusting groove of the second mounting arm, and the lower detection plunger is installed on the lower swing lever through a fixing screw arranged in the second mounting adjusting groove of the lower swing lever.

[0015] Further, the bone position detection mechanism further comprises a detection point moving unit, the detection point moving unit comprises a moving support bracket and a moving driving source installed on the moving support bracket, the detection assembly support bracket is movably installed on the moving support bracket, and the moving driving source is in transmission connection with the detection assembly support bracket.

[0016] Further, the detection point moving unit further comprises a nut connecting bracket fixedly connected with the detection assembly support bracket, and the moving driving source is a lead screw motor, the output end of the lead screw motor is provided with a motor nut capable of moving forward and backward, and the nut connecting bracket is fixedly connected with the motor nut of the moving driving source.

[0017] Further, the detection point moving unit further comprises an origin detection sensor fixed on the nut connecting bracket and an origin induction sheet fixed on the detection assembly support bracket, and the origin detection sensor can sense the origin induction sheet.

[0018] Further, the bone position detection mechanism further comprises an avoiding unit, the avoiding unit comprises a fixedly arranged avoiding mounting plate and an avoiding driving source installed on the avoiding mounting plate, the avoiding driving source is in transmission connection with the moving support bracket and drives the moving support bracket to move towards the front and rear panel pieces or away from the front and rear panel pieces;

[0019] When the avoiding driving source drives the moving support bracket to move away from the front and rear panel pieces, an avoiding area is formed between the moving support bracket and the front and rear panel pieces.

[0020] Further, the avoiding driving source is a gas cylinder, the avoiding unit further comprises an avoiding connecting bracket installed on the end of the piston rod of the gas cylinder of the avoiding driving source, a fixedly arranged limiting mounting bracket, a limiting screw rod screwed in the limiting mounting bracket and a buffer body fixed on the end of the limiting screw rod, the moving support bracket is fixedly connected with the avoiding connecting bracket, and the avoiding connecting bracket can abut against the buffer body.

[0021] The present invention also provides a double-piece seaming system, including a fixed equipment frame, a sewing table fixed on the equipment frame, a sewing machine installed on the equipment frame, and the bone position detection mechanism as described above, wherein the bone position detection mechanism is installed on the equipment frame, and the bone position detection mechanism and the sewing machine are distributed in sequence along the feeding direction of the front piece of cloth.

[0022] As described above, the bone position detection mechanism and double-piece seam system according to the present invention have the following beneficial effects:

[0023] The present application detects the bone positions on the front and back pieces of cloth through a bone position detection mechanism, and can realize automatic bone alignment in combination with bone position detection, effectively improving the alignment accuracy of the bone positions on the front and back pieces of cloth, and improving the quality and efficiency of double-piece splicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the double-piece seam system in this application.

[0025] Figure 2 This is a structural diagram of the bone position detection mechanism in this application.

[0026] Figure 3 and Figure 4 for Figure 2 Schematic diagram of the structure in different states after omitting the detection point moving unit and avoidance unit.

[0027] Figure 5 for Figure 2 Schematic diagram of the connection between the upper swing arm, upper detection plunger and pre-sensing plunger.

[0028] Figure 6 for Figure 2 Schematic diagram of the connection between the middle lower swing rod and the lower detection plunger.

[0029] Figure 7 for Figure 2 Schematic diagram of the structure of the detection point moving unit and the avoidance unit.

[0030] Figure 8 and Figure 9 Schematic diagram of the structure of the bone position adjustment mechanism in this application at different viewing angles.

[0031] Figure 10 This is a schematic diagram of the connection between the upper bone position adjustment drive source, the upper correction unit and the upper clamping assembly in this application.

[0032] Figure 11 This is a schematic diagram of the connection between the lower bone position adjustment drive source, the lower correction unit and the lower clamping assembly in this application.

[0033] Component number description

[0034] 101 Bone Position Detection Agency

[0035] 102 Bone Position Adjustment Mechanism

[0036] 103 equipment racks

[0037] 104 Sewing Table

[0038] 105 Sewing Machine

[0039] 20 detection units

[0040] 21 Detection component bracket

[0041] 22 Upper bone position detection sensor

[0042] 23 Lower bone position detection sensor

[0043] 24 Backswing

[0044] 241 First mounting arm

[0045] 242 Second mounting arm

[0046] 25 Downswing

[0047] 26 Upper detection plunger

[0048] 27 Lower detection plunger

[0049] 28 Middle partition

[0050] 29 Upper ejector bracket

[0051] 210 lower push rod bracket

[0052] 211 upper ejector assembly

[0053] 212 lower ejector assembly

[0054] 213 upper block

[0055] 214 lower top block

[0056] 215 Upper sensor mounting plate

[0057] 216 Lower sensor mounting plate

[0058] 217 First installation adjustment slot

[0059] 218 Pre-sensing plunger

[0060] 219 Second installation adjustment slot

[0061] 220 Contour Screws

[0062] 221 plunger fixing block

[0063] 30 detection point moving unit

[0064] 31 moving support bracket

[0065] 32 moving drive source

[0066] 33 nut connecting bracket

[0067] 34 origin detection sensor

[0068] 35 origin sensing sheet

[0069] 36 first guide rail slide mechanism

[0070] 40 avoidance unit

[0071] 41 avoidance mounting plate

[0072] 42 avoidance drive source

[0073] 43 avoidance connecting bracket

[0074] 44 limit mounting bracket

[0075] 45 limit screw

[0076] 46 buffer body

[0077] 47 second guide rail slide mechanism

[0078] 50 feeding moving unit

[0079] 51 feeding base

[0080] 52 third guide rail slide mechanism

[0081] 60 upper bone position adjusting unit

[0082] 61 upper bone position adjusting drive source

[0083] 62 upper clamping assembly

[0084] 63 first nut connecting plate

[0085] 64 upper deviation rectifying mounting plate

[0086] 65 upper deviation rectifying motor

[0087] 66 upper deviation rectifying gear

[0088] 67 upper deviation rectifying rack

[0089] 68 first motor connecting seat

[0090] 69 upper micro switch

[0091] 610 clamping plate fixing block

[0092] 70 Lower bone adjustment unit

[0093] 71 Lower bone position adjustment drive source

[0094] 72 lower clamping assembly

[0095] 73 Lower guide plate

[0096] 74 Lower deviation correction motor

[0097] 75 Lower deviation correcting gear

[0098] 76 Lower guiding rack

[0099] 77 Second motor connection seat

[0100] 78 Second nut connecting plate

[0101] 79 Lower micro switch

[0102] 81 Upper splint

[0103] 82 Lower splint

[0104] 83 Opening and closing drive source DETAILED DESCRIPTION

[0105] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0106] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0107] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0108] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0109] The present application provides a bone position detection mechanism 101 and a double-piece splicing system comprising the same, which are used to complete the splicing of front and rear piece fabrics. For the convenience of description, in the following embodiments, the definitions of various directions are as follows: the movement direction of the front and rear piece fabrics during sewing is defined as the front direction, and the front direction is also the feeding direction of the front and rear piece fabrics; the stacking direction of the front and rear piece fabrics is defined as the up-down direction, and in this embodiment, the front piece fabric is on the top and the rear piece fabric is on the bottom; the direction orthogonal to the front and rear directions and the up-down direction is defined as the left-right direction.

[0110] As shown in Figures 2 to 4 The bone position detection mechanism 101 according to the present application comprises a detection assembly support 21, and an upper bone position detection sensor 22 and a lower bone position detection sensor 23 both mounted on the detection assembly support 21. The upper bone position detection sensor 22 and the lower bone position detection sensor 23 are arranged up and down along the stacking direction of the front and rear piece fabrics. The upper bone position detection sensor 22 is used to detect the bone position on the front piece fabric, and the lower bone position detection sensor 23 is used to detect the bone position on the rear piece fabric.

[0111] As shown in Figure 1 The double-piece splicing system according to the present application comprises a fixedly arranged equipment rack 103, a sewing table 104 fixed on the equipment rack 103, a sewing machine 105 mounted on the equipment rack 103, and a bone position detection mechanism 101 mounted on the equipment rack 103. The bone position detection mechanism 101 and the sewing machine 105 are distributed in sequence along the feeding direction of the front piece fabric, i.e. the bone position detection mechanism 101 is distributed on the rear side of the sewing machine 105. In this embodiment, the type of the sewing machine 105 is a cover stitch machine.

[0112] During the double-piece splicing process, the upper bone position detection sensor 22 and the lower bone position detection sensor 23 respectively detect the bone position on the front piece fabric and the bone position on the rear piece fabric. According to the detected bone position information, the automatic alignment of the bone position is facilitated, so that the bone positions of the front and rear piece fabrics are strictly aligned, the automatic, rapid and accurate alignment of the bone is realized during the double-piece splicing, and the accuracy of the alignment of the bone is reliably ensured, thereby effectively improving the quality and efficiency of the double-piece splicing.

[0113] As Figure 1 shown in the figure, the double-piece seam system involved in the present application also includes an electric control module and a bone position adjusting mechanism 102, the electric control module, the bone position detecting mechanism 101 and the bone position adjusting mechanism 102 constitute a double-piece seam bone device. The bone position adjusting mechanism 102, the bone position detecting mechanism 101 and the sewing machine 105 are distributed in the feeding direction of the front piece cloth in turn, that is, the bone position adjusting mechanism 102, the bone position detecting mechanism 101 and the sewing machine 105 are distributed from back to front in turn, and are all arranged on the right edge side of the sewing table 104. In this embodiment, the bone position adjusting mechanism 102 is movably installed on the equipment rack 103, so that the bone position adjusting mechanism 102 is used not only to adjust the bone position of the front and back piece cloths, but also to feed the front and back piece cloths forward.

[0114] The bone position detecting mechanism 101 and the bone position adjusting mechanism 102 are two independent modules, which are respectively installed on the equipment rack 103. Moreover, the bone position detecting mechanism 101 is a self-adaptive bone position detecting mechanism, which can adapt to the bone position on the front and back piece cloths, that is, it can automatically find the bone position on the front and back piece cloths. The bone position adjusting mechanism 102 is a self-adaptive bone position adjusting mechanism, which can adjust the front and back positions of the bone position on the front and back piece cloths. The preferred structures of the bone position detecting mechanism 101 and the bone position adjusting mechanism 102 are described below.

[0115] Bone position detecting mechanism 101

[0116] As Figure 2 shown in the figure, the bone position detecting mechanism 101 includes a detecting unit 20, a detecting point moving unit 30 and an avoiding unit 40, the detecting unit 20 is installed on the detecting point moving unit 30, the detecting point moving unit 30 drives the detecting unit 20 to move forward and backward to find the bone position on the front and back piece cloths; the detecting point moving unit 30 is installed on the avoiding unit 40, the avoiding unit 40 drives the detecting point moving unit 30 and the detecting unit 20 to move left and right, so that the detecting point moving unit 30 and the detecting unit 20 are close to or away from the sewing table 104.

[0117] As Figures 3 to 6As shown, in addition to the above-mentioned detection component bracket 21, the upper bone position detection sensor 22 and the lower bone position detection sensor 23, the detection unit 20 also includes an upper swing rod 24 and a lower swing rod 25 both extending straight left and right, an upper detection plunger 26 installed at the left end of the upper swing rod 24, a lower detection plunger 27 installed at the left end of the lower swing rod 25, and a middle partition 28 fixed to the detection component bracket 21; the upper swing rod 24 and the lower swing rod 25 are distributed up and down, the middle position of the upper swing rod 24 is rotatably mounted on the detection component bracket 21 by the equal height screw 220 extending forward and backward, and the middle position of the lower swing rod 25 is rotatably mounted on the detection component bracket 21 by the equal height screw 220 extending forward and backward; the middle A partition 28 is located on the left side of the detection assembly bracket 21 and between the upper swing arm 24 and the lower swing arm 25, so that the upper detection plunger 26 and the lower detection plunger 27 are located on the upper and lower sides of the middle partition 28, and the upper detection plunger 26 and the lower detection plunger 27 are directly opposite each other. That is, the upper detection plunger 26 and the lower detection plunger 27 are separated by the middle partition 28. An upper feeding channel for the front piece of fabric is formed between the lower end of the upper detection plunger 26 and the middle partition 28, and a lower feeding channel for the rear piece of fabric is formed between the upper end of the lower detection plunger 27 and the middle partition 28. The upper bone position detection sensor 22 is aligned with the right end of the upper swing arm 24, and the lower bone position detection sensor 23 is aligned with the right end of the lower swing arm 25. Preferably, both the upper bone position detection sensor 22 and the lower bone position detection sensor 23 are diffuse reflection sensors.

[0118] The principle of the detection unit 20 for detecting the bone position on the front and back pieces of fabric is as follows: during the sewing process of the overlock sewing machine, the upper swing rod 24 and the lower swing rod 25 are both in a horizontal state, the upper feeding channel is slightly larger than the thickness of the front piece of fabric, but smaller than the thickness of the bone position on the front piece of fabric, and the lower feeding channel is slightly larger than the thickness of the back piece of fabric, but smaller than the thickness of the bone position on the back piece of fabric. The upper bone position detection sensor 22 and the lower bone position detection sensor 23 are both distance sensors. When the bone position on the front piece of fabric and the bone position on the back piece of fabric do not pass forward beyond the detection unit 20, as Figure 3 As shown, the upper swing rod 24 and the lower swing rod 25 remain in a horizontal state. At this time, the distance between the upper bone position detection sensor 22 and the right end of the upper swing rod 24 has not changed, and the upper bone position detection sensor 22 is not triggered, so the upper bone position detection sensor 22 has no signal output; the distance between the lower bone position detection sensor 23 and the right end of the lower swing rod 25 has not changed, and the lower bone position detection sensor 23 is not triggered, so the lower bone position detection sensor 23 has no signal output. When the bone on the front piece of cloth reaches the upper detection plunger 26, the bone on the front piece of cloth pushes up the detection plunger 26, driving the upper swing rod 24 to rotate clockwise through an angle, as shown in FIG. Figure 4When the bone position on the front piece fabric reaches the upper detection plunger 26, the bone position on the front piece fabric pushes the upper detection plunger 26 upward, and drives the upper swing lever 24 to rotate clockwise by an angle, as shown in Figure 4 When the bone position on the back piece fabric reaches the lower detection plunger 27, the bone position on the back piece fabric pushes the lower detection plunger 27 downward, and drives the lower swing lever 25 to rotate counterclockwise by an angle, as shown in

[0119] Further, as shown in Figure 3 and Figure 4 The detection unit 20 further comprises an upper top rod support 29 fixed on the upper end of the detection assembly support 21, a lower top rod support 210 fixed on the lower end of the detection assembly support 21, an upper top rod assembly 211 installed on the upper top rod support 29, and a lower top rod assembly 212 installed on the lower top rod support 210; the upper top rod support 29 is distributed on the upper side of the right segment of the upper swing lever 24, and the lower top rod support 210 is distributed on the lower side of the right segment of the lower swing lever 25; the upper top rod assembly 211 comprises a cylinder and an upper top block 213 installed on the lower end of the piston rod of the cylinder, and the upper top block 213 abuts against the upper side of the upper swing lever 24; the lower top rod assembly 212 comprises a cylinder and a lower top block 214 installed on the upper end of the piston rod of the cylinder, and the lower top block 214 abuts against the lower side of the lower swing lever 25. When the piston rod of the cylinder of the upper top rod assembly 211 does not extend downward, as shown in Figure 3 the abutment of the upper top block 213 and the upper swing lever 24 makes the upper swing lever 24 just in a horizontal state; when the piston rod of the cylinder of the lower top rod assembly 212 does not extend upward, as shown in Figure 3 the abutment of the lower top block 214 and the lower swing lever 25 makes the lower swing lever 25 just in a horizontal state. When the cylinder of the upper top rod assembly 211 acts, its piston rod extends downward, as shown in Figure 4 the downward movement of the upper top block 213 drives the upper swing lever 24 to rotate clockwise, and the left end of the upper swing lever 24 moves upward and opens, which facilitates the front piece fabric to enter the upper feeding passage during feeding. Similarly, when the cylinder of the lower top rod assembly 212 acts, its piston rod extends upward, as shown in Figure 4 the upward movement of the lower top block 214 drives the lower swing lever 25 to rotate counterclockwise, and the left end of the lower swing lever 25 moves downward and opens, which facilitates the back piece fabric to enter the lower feeding passage during feeding.

[0120] Preferably, the left end of the upper detection plunger 26 installed on the upper swing lever 24 is heavier than the right end of the upper swing lever 24, and the left end of the lower detection plunger 27 installed on the lower swing lever 25 is lighter than the right end of the lower swing lever 25, which can be realized by installing a counterweight on the left end of the upper swing lever 24 and the right end of the lower swing lever 25. In this way, after the front and back piece cloth is fed, the cylinders of the upper ejector rod assembly 211 and the lower ejector rod assembly 212 are reset, the upper swing lever 24 swings counterclockwise under the action of its gravity and is reset to the horizontal state and closed, and the lower swing lever 25 swings clockwise under the action of its gravity and is reset to the horizontal state and closed. The present application drives the upper swing lever 24 and the lower swing lever 25 to open by the upper ejector rod assembly 211 and the lower ejector rod assembly 212, and drives the upper swing lever 24 and the lower swing lever 25 to close by the gravity of the upper swing lever 24 and the lower swing lever 25, which is simple in structure and easy to realize.

[0121] Further, the upper bone position detection sensor 22 and the lower bone position detection sensor 23 are respectively installed on the right end of the upper ejector rod support 29 and the lower ejector rod support 210. The specific structure is as shown in Figure 3 and Figure 4 The right end of the upper ejector rod support 29 is fixed with an upper sensor mounting plate 215 by a screw, the right end of the lower ejector rod support 210 is fixed with a lower sensor mounting plate 216 by a screw, the upper sensor mounting plate 215 and the lower sensor mounting plate 216 are both provided with a first installation adjusting groove 217, which is a circular arc groove; the upper bone position detection sensor 22 is installed on the upper sensor mounting plate 215 by a fixing screw threaded in the first installation adjusting groove 217 of the upper sensor mounting plate 215, and the lower bone position detection sensor 23 is installed on the lower sensor mounting plate 216 by a fixing screw threaded in the first installation adjusting groove 217 of the lower sensor mounting plate 216, so as to realize the installation of the upper bone position detection sensor 22 and the lower bone position detection sensor 23, and also adjust the installation position of the upper bone position detection sensor 22 and the lower bone position detection sensor 23 to ensure the accuracy of the detection of the bone position.

[0122] Further, as shown in Figures 3 to 5As shown, the detection unit 20 further comprises a pre-inductive plunger 218 mounted at the left end of the upper swing lever 24, and the pre-inductive plunger 218 and the upper detection plunger 26 are arranged in sequence along the feeding direction of the front fabric sheet, i.e. the pre-inductive plunger 218 is arranged at the back side of the upper detection plunger 26. During the advancement of the front and back fabric sheets during sewing, the pre-inductive plunger 218 will first contact the bone of the front fabric sheet compared with the upper detection plunger 26, and drive the upper swing lever 24 to rotate clockwise by an angle, and the upper bone detection sensor 22 is triggered, at this time, the control module will control the overlock machine to slow down sewing; when the upper bone detection sensor 22 and the lower bone detection sensor 23 are both triggered, the control module will control the overlock machine to stop sewing. In this way, through the setting of the pre-inductive plunger 218, the deceleration time of the overlock machine after the upper bone detection sensor 22 and the lower bone detection sensor 23 both detect the bone can be reduced, and the advancement distance of the front and back fabric sheets during the deceleration of the overlock machine is also reduced, thereby avoiding the influence of the stitch at the sewing position due to the sudden stop of the overlock machine.

[0123] Further, as shown in Figure 5 and Figure 6 the left end of the upper swing lever 24 is provided with a U-shaped mounting portion, the U-shaped mounting portion has a first mounting arm 241 and a second mounting arm 242 arranged in sequence along the feeding direction of the front fabric sheet, the first mounting arm 241, the second mounting arm 242 and the left end of the lower swing lever 25 are all provided with a second mounting adjusting groove 219 extending horizontally, the pre-inductive plunger 218 is mounted on the first mounting arm 241 through a fixing screw arranged in the second mounting adjusting groove 219 of the first mounting arm 241, the upper detection plunger 26 is mounted on the second mounting arm 242 through a fixing screw arranged in the second mounting adjusting groove 219 of the second mounting arm 242, and the lower detection plunger 27 is mounted on the lower swing lever 25 through a fixing screw arranged in the second mounting adjusting groove 219 of the lower swing lever 25, thereby mounting the pre-inductive plunger 218 and the upper detection plunger 26 at the left end of the upper swing lever 24 and mounting the lower detection plunger 27 at the left end of the lower swing lever 25, and at the same time, the mounting positions of the pre-inductive plunger 218, the upper detection plunger 26 and the lower detection plunger 27 in the left-right direction can be adjusted.

[0124] Preferably, as shown in Figure 5 the detection unit 20 further comprises a plunger fixing block 221 fixed at the upper ends of the pre-inductive plunger 218, the upper detection plunger 26 and the lower detection plunger 27, the pre-inductive plunger 218 is fixed to the first mounting arm 241 through the plunger fixing block 221 at the upper end thereof, the upper detection plunger 26 is fixed to the second mounting arm 242 through the plunger fixing block 221 at the upper end thereof, and the lower detection plunger 27 is fixed to the lower swing lever 25 through the plunger fixing block 221 at the upper end thereof. Moreover, the plunger fixing block 221 at the upper end of the pre-inductive plunger 218 and the plunger fixing block 221 at the upper end of the upper detection plunger 26 are arranged between the first mounting arm 241 and the second mounting arm 242.

[0125] Further, as shown in Figure 7 , the detection point moving unit 30 comprises a moving support bracket 31 and a moving driving source 32 installed on the moving support bracket 31, the detection assembly bracket 21 is movably installed on the moving support bracket 31, the moving driving source 32 is in transmission connection with the detection assembly bracket 21 and in communication connection with the electric control module. During the advancing of the front and back pieces of cloth in the sewing process, when the upper bone position detection sensor 22 and the lower bone position detection sensor 23 respectively detect the bone positions of the front piece of cloth and the back piece of cloth, the electric control module controls the overlock machine to stop, then the electric control module controls the moving driving source 32 to act, the moving driving source 32 drives the detection assembly bracket 21 to move forward, that is, drives the detection unit 20 as a whole to move forward, until any one of the upper bone position detection sensor 22 and the lower bone position detection sensor 23 detects the bone position again, thereby adapting to the bone positions on the front and back pieces of cloth.

[0126] Preferably, as shown in Figure 7 , the detection point moving unit 30 further comprises a nut connecting bracket 33 fixedly connected with the detection assembly bracket 21, the nut connecting bracket 33 is a trapezoidal structure; the moving driving source 32 is a lead screw motor and is fixed on the moving support bracket 31 through a motor mounting plate, the output end of the lead screw motor has a motor nut movable forward and backward, the nut connecting bracket 33 is fixedly connected with the motor nut of the moving driving source 32. When the moving driving source 32 acts, the motor nut drives the nut connecting bracket 33 to move forward and backward, thereby driving the detection assembly bracket 21 and the detection unit 20 as a whole to move forward and backward. In addition, the detection point moving unit 30 further comprises a first guide rail sliding block mechanism 36 extending forward and backward, the first guide rail sliding block mechanism 36 is connected between the detection assembly bracket 21 and the moving support bracket 31, and provides guidance for the forward and backward movement of the detection assembly bracket 21.

[0127] Further, as shown in Figure 7 , the detection point moving unit 30 further comprises an original point detection sensor 34 fixed with the moving support bracket 31 and an original point sensing sheet 35 fixed with the detection assembly bracket 21, the original point detection sensor 34 can sense the original point sensing sheet 35 and is in communication connection with the electric control module. In the initial state, the original point detection sensor 34 senses the original point sensing sheet 35; when the moving driving source 32 drives the detection unit 20 to move forward to find the bone positions on the front and back pieces of cloth, the original point detection sensor 34 cannot sense the original point sensing sheet 35; then, the moving driving source 32 drives the detection unit 20 to move backward to reset, until the original point detection sensor 34 senses the original point sensing sheet 35, the electric control module judges that the moving driving source 32 has been reset to the original point, and controls the moving driving source 32 to stop rotating.

[0128] Further, as shown in Figure 7As shown, the avoiding unit 40 comprises a fixed avoiding installation plate 41 and an avoiding driving source 42 installed on the avoiding installation plate 41, the avoiding installation plate 41 is fixed on the equipment rack 103, the avoiding driving source 42 is in transmission connection with the moving support bracket 31, and drives the moving support bracket 31 to move towards the front or rear panel fabric.

[0129] Further, as shown in Figure 2 and Figure 7 , the avoiding driving source 42 is a cylinder and is fixed on the avoiding installation plate 41, the avoiding unit 40 further comprises an avoiding connecting bracket 43 installed on the left end of the cylinder piston rod of the avoiding driving source 42, a fixed limiting installation bracket 44, a limiting screw rod 45 screwed in the limiting installation bracket 44, and a buffer body 46 fixed on the right end of the limiting screw rod 45, the moving support bracket 31 is fixedly connected with the avoiding connecting bracket 43, the limiting installation bracket 44 is fixed on the equipment rack 103, and the avoiding connecting bracket 43 can abut against the buffer body 46. When the bone site adjusting mechanism 102 is not moved forward to the bone site detecting mechanism 101, the cylinder piston rod of the avoiding driving source 42 keeps extending to the left, at this time, the avoiding connecting bracket 43 abuts against the buffer body 46. When the bone site adjusting mechanism 102 is moved forward to the bone site detecting mechanism 101, the cylinder piston rod of the avoiding driving source 42 is retracted to the right, drives the moving support bracket 31 to move to the right away from the sewing table 104, and drives the detecting point moving unit 30 and the detecting unit 20 to move to the right, forming an avoiding area for the upper clamping assembly 62 and the lower clamping assembly 72 to pass through. After sewing is completed, the bone site adjusting mechanism 102 is reset, the avoiding driving source 42 is reset, and the avoiding connecting bracket 43 abuts against the buffer body 46 again. In addition, the left and right positions of the buffer body 46 can be adjusted by the limiting screw rod 45, and the extending distance of the cylinder piston rod of the avoiding driving source 42 to the left is controlled.

[0130] Preferably, as shown in Figure 7 , the avoiding unit 40 further comprises a second guide rail sliding block mechanism 47 extending horizontally and straightly, the second guide rail sliding block mechanism 47 is connected between the avoiding connecting bracket 43 and the avoiding installation plate 41, and provides guidance for the left and right movement of the avoiding connecting bracket 43.

[0131] The bone site adjusting mechanism 102

[0132] As shown in Figure 8 and Figure 9As shown, the bone position adjusting mechanism 102 comprises a feeding moving unit 50, and an upper bone position adjusting unit 60 and a lower bone position adjusting unit 70 both mounted on the feeding moving unit 50. The feeding moving unit 50 comprises a feeding base 51 movably mounted on the equipment rack 103, a third guide rail sliding block mechanism 52 extending horizontally, a feeding motor, and a feeding transmission assembly; the feeding motor is connected with the feeding base 51 through the feeding transmission assembly, and drives the feeding base 51 to move forward and backward, and the upper bone position adjusting unit 60 and the lower bone position adjusting unit 70 move forward and backward with the feeding base 51; the third guide rail sliding block mechanism 52 is connected between the feeding base 51 and the equipment rack 103, and provides a guide for the feeding base 51 to move forward and backward.

[0133] As shown in Figure 8 and Figure 9 , the upper bone position adjusting unit 60 comprises an upper bone position adjusting driving source 61 and an upper clamping assembly 62 for clamping the front piece of cloth, and the upper bone position adjusting driving source 61 is in transmission connection with the upper clamping assembly 62, and is used for driving the upper clamping assembly 62 to move forward and backward along the feeding direction of the front piece of cloth, and adjusting the forward and backward positions of the upper bone position of the front piece of cloth. The lower bone position adjusting unit 70 comprises a lower bone position adjusting driving source 71 and a lower clamping assembly 72 for clamping the back piece of cloth, and the lower bone position adjusting driving source 71 is in transmission connection with the lower clamping assembly 72, and is used for driving the lower clamping assembly 72 to move forward and backward along the feeding direction of the back piece of cloth, and adjusting the forward and backward positions of the upper bone position of the back piece of cloth. The upper bone position detection sensor 22, the lower bone position detection sensor 23, the upper bone position adjusting driving source 61 and the lower bone position adjusting driving source 71 are all in communication connection with the electric control module.

[0134] In addition to the above-mentioned upper bone position adjusting driving source 61 and the upper clamping assembly 62, the upper bone position adjusting unit 60 further comprises an upper deviation rectifying unit. As shown in Figure 10 , the upper bone position adjusting driving source 61 is a lead screw motor, and the output end of the lead screw motor has a motor nut movable forward and backward, and the motor nut of the upper bone position adjusting driving source 61 is connected with the upper clamping assembly 62 through the upper deviation rectifying unit. When the feeding motor drives the feeding base 51 to move forward, the upper clamping assembly 62 and the front piece of cloth clamped thereby also move forward, and the forward feeding of the front piece of cloth is realized; when automatically aligning the bone, the upper bone position adjusting driving source 61 drives the upper clamping assembly 62 to move forward and backward, and adjusts the forward and backward positions of the upper bone position of the front piece of cloth, and the automatic alignment of the bone is realized; and the upper deviation rectifying unit is used for adjusting the left and right positions of the upper clamping assembly 62, and automatically rectifying the left and right positions of the right edge of the front piece of cloth.

[0135] Further, as shown in Figure 10As shown, the upper bone position adjusting unit 60 further comprises a first motor connecting seat 68, the upper bone position adjusting driving source 61 is fixed on the first motor connecting seat 68, and the first motor connecting seat 68 is fixed on the feeding base 51; the upper deviation rectifying unit comprises a first nut connecting plate 63, an upper deviation rectifying mounting plate 64 fixed with the first nut connecting plate 63, an upper deviation rectifying motor 65 mounted on the upper deviation rectifying mounting plate 64, an upper deviation rectifying gear 66 driven to rotate by the upper deviation rectifying motor 65, and an upper deviation rectifying rack 67 engaged with the upper deviation rectifying gear 66, the first nut connecting plate 63 is fixedly connected with the motor nut of the upper bone position adjusting driving source 61, the upper deviation rectifying rack 67 extends horizontally left and right along a direction perpendicular to the moving direction of the motor nut, and the upper clamping assembly 62 is mounted on the upper deviation rectifying rack 67.

[0136] Further, as shown in Figure 10 The left end of the upper deviation rectifying rack 67 is fixed with a clamping plate fixing block 610 through a screw, and the upper clamping assembly 62 is arranged on the front side of the upper bone position adjusting unit 60; the upper clamping assembly 62 comprises a pair of upper clamping plates 81 and lower clamping plates 82 which can be opened and closed upward and downward, and an opening and closing driving source 83, the opening and closing driving source 83 is a pneumatic cylinder and is fixed on the clamping plate fixing block 610, the upper clamping plates 81 are fixed on the clamping plate fixing block 610, the pneumatic cylinder piston rod of the opening and closing driving source 83 is fixedly connected with the lower clamping plates 82, drives the lower clamping plates 82 to move upward and downward, and realizes the opening or closing of the lower clamping plates 82 and the upper clamping plates 81, that is, clamps or releases the cloth accordingly.

[0137] Preferably, as shown in Figure 10 The upper bone position adjusting unit 60 further comprises an upper micro switch 69 fixed on the first motor connecting seat 68, the upper micro switch 69 is arranged in front of the first nut connecting plate 63, and the upper micro switch 69 is in communication connection with the electric control module; when the upper bone position adjusting driving source 61 is at the original position, the first nut connecting plate 63 just triggers the upper micro switch 69. In this way, during the process of adjusting the bone position of the front piece of cloth, the motor nut of the upper bone position adjusting driving source 61 is in a rear moving state, so that the first nut connecting plate 63 moves away from the upper micro switch 69; after the adjustment of the bone position of the front piece of cloth is completed, the upper bone position adjusting driving source 61 needs to be reset, and then the first nut connecting plate 63 moves forward, when the upper micro switch 69 is abutted by the first nut connecting plate 63 and is in a closed state, it indicates that the upper bone position adjusting driving source 61 is reset to the original position, and the electric control module can control the upper bone position adjusting driving source 61 to stop rotating.

[0138] In addition to the above-mentioned lower bone position adjusting driving source 71 and the lower clamping assembly 72, the lower bone position adjusting unit 70 further comprises a lower deviation rectifying unit. As shown in Figure 11As shown, the output end of the lower deviation rectifying unit is connected with a lower bone position adjustment driving source 71, the lower bone position adjustment driving source 71 is a lead screw motor, the output end of the lead screw motor has a motor nut which can move forward and backward, the motor nut of the lower bone position adjustment driving source 71 is connected with a lower clamping assembly 72. When the feeding motor drives the feeding base 51 to move forward, the lower clamping assembly 72 and the back sheet clamped thereby also move forward, thereby realizing the forward feeding of the back sheet; when automatically aligning the bone, the lower bone position adjustment driving source 71 drives the lower clamping assembly 72 to move forward and backward, thereby adjusting the forward and backward position of the bone position on the back sheet, and realizing the automatic alignment of the bone; the lower deviation rectifying unit is used for adjusting the left and right positions of the lower clamping assembly 72, and automatically correcting the left and right positions of the right edge of the back sheet.

[0139] Further, as shown in Figure 11 the lower deviation rectifying unit includes a lower deviation rectifying mounting plate 73, a lower deviation rectifying motor 74 mounted on the lower deviation rectifying mounting plate 73, a lower deviation rectifying gear 75 driven to rotate by the lower deviation rectifying motor 74, a lower deviation rectifying rack 76 engaged with the lower deviation rectifying gear 75, a second motor connecting seat 77 fixed with the lower deviation rectifying rack 76, and a second nut connecting plate 78, the lower deviation rectifying mounting plate 73 is fixed on the feeding base 51, the lower bone position adjustment driving source 71 is mounted on the second motor connecting seat 77, the second nut connecting plate 78 is fixedly connected with the motor nut of the lower bone position adjustment driving source 71, and the lower clamping assembly 72 is mounted on the second nut connecting plate 78.

[0140] Further, as shown in Figure 11 the lower clamping assembly 72 is arranged on the front side of the lower bone position adjustment unit 70; the lower clamping assembly 72 includes a pair of upper clamping plates 81 and lower clamping plates 82 which can be opened and closed upward and downward, and an opening and closing driving source 83, the opening and closing driving source 83 is a pneumatic cylinder and is fixed on the second nut connecting plate 78, the lower clamping plates 82 are fixed on the second nut connecting plate 78, the pneumatic cylinder piston rod of the opening and closing driving source 83 is fixedly connected with the upper clamping plates 81, thereby driving the upper clamping plates 81 to move upward and downward, and realizing the opening or closing of the lower clamping plates 82 and the upper clamping plates 81, that is, clamping or unclamping the cloth accordingly.

[0141] Preferably, as shown in Figure 11As shown, the lower bone position adjusting unit 70 further comprises a lower micro switch 79 fixed on the second motor connecting seat 77, which is arranged at the front side of the second nut connecting plate 78, and the lower micro switch 79 is in communication connection with the electric control module; when the lower bone position adjusting driving source 71 is at the original point, the second nut connecting plate 78 just triggers the upper micro switch 69. Thus, during the process of adjusting the bone position of the back piece cloth, the motor nut of the lower bone position adjusting driving source 71 is in a backward moving state, so that the second nut connecting plate 78 moves away from the lower micro switch 79; after the adjustment of the bone position of the back piece cloth is completed, the lower bone position adjusting driving source 71 needs to be reset, and then the second nut connecting plate 78 moves forward; when the lower micro switch 79 is abutted by the second nut connecting plate 78 and is in a closed state, it indicates that the lower bone position adjusting driving source 71 is reset to the original point, and the electric control module can control the lower bone position adjusting driving source 71 to stop rotating.

[0142] In summary, the bone adjusting process of the double-piece splicing system related to the present application is as follows.

[0143] I. In the initial state, in the bone position detection mechanism 101, the cylinder piston rod of the avoidance driving source 42 remains in the state of extending to the left, and the avoidance connecting bracket 43 is abutted with the buffer body 46; the moving driving source 32 is at the original point position, the original point sensing piece 35 blocks and can be sensed by the original point detection sensor 34; the cylinders of the upper and lower top rod assemblies 211 and 212 are all in action, and the upper and lower swing rods 24 and 25 are both in the open state. In the bone position adjusting mechanism 102, the upper and lower bone position adjusting driving sources 61 and 71 are both at their respective original points, the first nut connecting plate 63 is at its front limit position and abuts with the upper micro switch 69, the second nut connecting plate 78 is at its front limit position and abuts with the lower micro switch 79, and the upper and lower micro switches 69 and 79 are both closed.

[0144] II. Feeding, the right edge of the front piece cloth is in the upper feeding passage and the front piece cloth is clamped by the upper clamping assembly 62, and the right edge of the back piece cloth is in the lower feeding passage and the back piece cloth is clamped by the lower clamping assembly 72.

[0145] III. After the feeding is completed, the cylinders of the upper and lower top rod assemblies 211 and 212 are reset respectively, the upper and lower swing rods 24 and 25 are reset respectively and are both in the closed state, the thickness of the upper feeding passage formed between the pre-sensing plunger 218 and the upper detection plunger 26 and the middle partition plate 28 is about the thickness of one piece of cloth, and the thickness of the lower feeding passage formed between the lower detection plunger 27 and the middle partition plate 28 is about the thickness of one piece of cloth.

[0146] Four, sewing work is carried out, the front piece and the back piece are stacked, the feeding mechanism in the overlock machine drives the front piece and the back piece to move forward, at the same time, the feeding motor in the bone position adjusting mechanism 102 operates, the front and back pieces are fed forward, the rotation speed of the feeding motor matches the rotation speed of the overlock machine, that is, the feeding speed of the bone position adjusting mechanism 102 to the front and back pieces always matches the feeding speed of the overlock machine.

[0147] Five, as the sewing work is carried out, the bone position of the front piece will top up the pre-induction plunger 218 in advance during the forward movement, drive the upper swing rod 24 to rotate clockwise by an angle, the upper bone position detection sensor 22 is triggered, the electronic control module controls the overlock machine to operate at a reduced speed and the feeding motor to operate at a reduced speed, the front and back pieces continue to move forward. Then, the bone position of the back piece will be topped down by the lower detection plunger 27 during the forward movement, drive the lower swing rod 25 to rotate counterclockwise by an angle, the lower bone position detection sensor 23 is triggered; again, as the feeding continues, the front and back pieces continue to move forward, when there is no signal from the upper bone position detection sensor 22 and the lower bone position detection sensor 23, the electronic control module controls the overlock machine to stop and the feeding motor to stop, at this time, the bone position on the front piece has moved forward beyond the upper detection plunger 26, and the bone position on the back piece has moved forward beyond the lower detection plunger 27.

[0148] Six, the electronic control module controls the movement driving source 32 to rotate, drives the detection unit 20 to move forward, then the upper detection plunger 26 and the lower detection plunger 27 move forward, respectively find the bone position on the front piece and the bone position on the back piece, until any one of the upper bone position detection sensor 22 and the lower bone position detection sensor 23 is triggered, at this time, the electronic control module controls the movement driving source 32 to stop rotating, and controls the operation of the upper bone position adjusting driving source 61 and the lower bone position adjusting driving source 71 according to the triggered situation of the upper bone position detection sensor 22 and the lower bone position detection sensor 23.

[0149] Case one, the upper bone position detection sensor 22 is triggered first, which indicates that the bone position on the front piece is just aligned with the upper detection plunger 26, but the bone position on the back piece is still located on the front side of the lower detection plunger 27. At this time, the electronic control module controls the lower bone position adjusting driving source 71 to rotate, the lower bone position adjusting driving source 71 drives the lower clamping assembly 72 to move backward, the lower clamping assembly 72 drives the back piece clamped thereby to move backward, until the lower bone position detection sensor 23 is triggered, then the bone position on the back piece is just aligned with the lower detection plunger 27; while the upper detection plunger 26 and the lower detection plunger 27 are aligned vertically, which makes the bone position on the front piece aligned with the bone position on the back piece, and automatic bone alignment is achieved.

[0150] Case two, the lower bone position detection sensor 23 is triggered first, indicating that the bone position on the back piece is aligned with the lower detection plunger 27, but the bone position on the front piece is still in front of the upper detection plunger 26. At this time, the electric control module controls the upper bone position adjustment drive source 61 to rotate, and the upper bone position adjustment drive source 61 drives the upper clamping assembly 62 to move backward, and the upper clamping assembly 62 drives the front piece clamped thereby to move backward until the upper bone position detection sensor 22 is triggered, and the bone position on the front piece is aligned with the upper detection plunger 26; and the upper detection plunger 26 and the lower detection plunger 27 are aligned vertically, so that the bone position on the front piece is aligned with the bone position on the back piece, and automatic bone alignment is achieved.

[0151] Seven, after the bone alignment is completed, the upper bone position detection sensor 22 and the lower bone position detection sensor 23 are both triggered and have signals, the cylinders of the upper and lower ejector rod assemblies 211 and 212 are both actuated to drive the upper and lower swing levers 24 and 25 to open, and the pre-sensing plunger 218 and the upper detection plunger 26 are both away from the front piece, and the lower detection plunger 27 is away from the back piece; then, the electric control module controls the movement drive source 32 to reset until the original point detection sensor 34 is triggered.

[0152] Eight, the electric control module controls the overlock machine to continue sewing, and the feeding motor in the bone position adjustment mechanism 102 continues to operate. When the bone position adjustment mechanism 102 moves forward to the bone position detection mechanism 101, the electric control module controls the cylinder piston of the avoidance drive source 42 to retract to the right, and drives the detection unit 20 and the detection point movement unit 30 to move to the right to avoid the bone position adjustment mechanism 102.

[0153] Nine, after the front and back pieces move forward to the redundant position, the electric control module controls the lower bone position detection sensor 23 to reset until the lower micro switch 79 is triggered, and the redundant action starts. After the redundant action is completed, the sewing continues.

[0154] Ten, after the sewing is completed, the feeding motor in the bone position adjustment mechanism 102 resets, and the bone position adjustment mechanism 102 moves backward to its original position. During this process, the electric control module controls the upper bone position detection sensor 22 to reset until the upper micro switch 69 is triggered; when the bone position adjustment mechanism 102 moves backward beyond the bone position detection mechanism 101, the electric control module controls the cylinder piston of the avoidance drive source 42 to extend to the left, and the bone position detection mechanism 101 resets to its initial state.

[0155] In summary, the present application has the following advantages:

[0156] 1. During the sewing process of the piece, the automatic bone alignment of the front and back pieces can be quickly and accurately completed, the bone alignment precision is high, and the quality of the double-piece sewing is effectively improved; by replacing manual bone alignment with automation, the time and labor consumed are effectively reduced, and the production efficiency is improved.

[0157] 2. The device can be applied to different length of cloth pieces, reducing the restriction of the device to the sewing work.

[0158] 3. The device can reduce the adjustment of the bone position by automatically searching the bone position, and can complete the alignment of the bone position with a small displacement, ensuring the beauty of the stitch on the bone position.

[0159] 4. The precision of the device is controlled within ±1mm, which is more stable and better than manual work, and has market competitiveness.

[0160] In summary, the device effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0161] The above embodiments only exemplarily illustrate the principles and effects of the device, and are not used to limit the device. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the device. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the device should be covered by the claims of the device.

Claims

1. A bone position detection mechanism, characterized in that: The present invention comprises a detection component bracket (21), an upper bone position detection sensor (22) and a lower bone position detection sensor (23) both mounted on the detection component bracket (21), an upper swing rod (24) and a lower swing rod (25) both rotatably mounted on the detection component bracket (21), an upper detection plunger (26) mounted on one end of the upper swing rod (24), a lower detection plunger (27) mounted on one end of the lower swing rod (25), and a middle partition (28) fixed to the detection component bracket (21), wherein the upper bone position detection sensor (22) and the lower bone position detection sensor (23) are arranged in an upper and lower direction along the stacking direction of the front and rear pieces of cloth, and the upper bone position detection sensor (22) is used to detect the front and rear pieces of cloth. The bone position on the cloth piece, the lower bone position detection sensor (23) is used to detect the bone position on the back cloth piece, the upper detection plunger (26) and the lower detection plunger (27) are distributed on the upper and lower sides of the middle partition (28) and are directly opposite to each other, an upper feeding channel for allowing the front cloth piece to pass through is formed between the lower end of the upper detection plunger (26) and the middle partition (28), and a lower feeding channel for allowing the back cloth piece to pass through is formed between the upper end of the lower detection plunger (27) and the middle partition (28), the upper bone position detection sensor (22) is aligned with the other end of the upper swing rod (24), and the lower bone position detection sensor (23) is aligned with the other end of the lower swing rod (25).

2. The bone position detection mechanism according to claim 1, characterized in that: The upper bone position detection sensor (22) and the lower bone position detection sensor (23) are both diffuse reflection sensors.

3. The bone position detection mechanism according to claim 1, characterized in that: The invention also includes an upper push rod bracket (29) and a lower push rod bracket (210) both of which are fixed to the detection component bracket (21), an upper push rod assembly (211) installed on the upper push rod bracket (29), and a lower push rod assembly (212) installed on the lower push rod bracket (210); the upper push rod assembly (211) includes a cylinder and an upper push block (213) installed at the lower end of the cylinder piston rod, and the upper push block (213) abuts against the upper side of the upper swing rod (24); the lower push rod assembly (212) includes a cylinder and a lower push block (214) installed at the upper end of the cylinder piston rod, and the lower push block (214) abuts against the lower side of the lower swing rod (25).

4. The bone position detection mechanism according to claim 3, characterized in that: The weight of one end of the upper swing rod (24) on which the upper detection plunger (26) is installed is greater than the weight of the other end of the upper swing rod (24), and the weight of one end of the lower swing rod (25) on which the lower detection plunger (27) is installed is less than the weight of the other end of the lower swing rod (25); When the piston rod of the cylinder in the upper push rod assembly (211) does not extend downward, the upper swing rod (24) is in a horizontal state; When the piston rod of the cylinder in the lower push rod assembly (212) does not extend upward, the lower swing rod (25) is in a horizontal state.

5. The bone position detection mechanism according to claim 3, characterized in that: An upper sensor mounting plate (215) is fixed to the end of the upper push rod bracket (211), and a lower sensor mounting plate (216) is fixed to the end of the lower push rod bracket (212). A first mounting adjustment slot (217) is provided in both the upper sensor mounting plate (215) and the lower sensor mounting plate (216). The upper bone position detection sensor (22) is mounted on the upper sensor mounting plate (215) by means of a fixing screw passing through the first mounting adjustment slot (217) of the upper sensor mounting plate (215), and the lower bone position detection sensor (23) is mounted on the lower sensor mounting plate (216) by means of a fixing screw passing through the first mounting adjustment slot (217) of the lower sensor mounting plate (216).

6. The bone position detection mechanism according to claim 1, characterized in that: It also includes a pre-sensing plunger and a pre-sensing plunger (218), wherein the pre-sensing plunger (218) is installed at one end of the upper swing rod (24), and the pre-sensing plunger (218) and the upper detection plunger (26) are distributed in sequence along the feeding direction of the front cloth piece.

7. The bone position detection mechanism according to claim 6, characterized in that: A U-shaped mounting portion is provided at one end of the upper swing rod (24), and the U-shaped mounting portion comprises a first mounting arm (241) and a second mounting arm (242) which are sequentially distributed along the feeding direction of the front fabric piece. A second mounting adjustment slot (219) extending straightly left and right is provided at one end of the first mounting arm (241), the second mounting arm (242) and the lower swing rod (25). The pre-sensing plunger (218) is mounted on the first mounting arm (241) by means of a fixing screw passing through the second mounting adjustment slot (219) of the first mounting arm (241). The upper detection plunger (26) is mounted on the second mounting arm (242) by means of a fixing screw passing through the second mounting adjustment slot (219) of the second mounting arm (242). The lower detection plunger (27) is mounted on the lower swing rod (25) by means of a fixing screw passing through the second mounting adjustment slot (219) of the lower swing rod (25).

8. The bone position detection mechanism according to claim 1, characterized in that: The detection point moving unit (30) is also included. The detection point moving unit (30) includes a movable support bracket (31) and a movable driving source (32) installed on the movable support bracket (31). The detection component bracket (21) is installed on the movable support bracket (31) so as to be movable forward and backward. The movable driving source (32) is connected to the detection component bracket (21) in a transmission manner.

9. The bone position detection mechanism according to claim 8, characterized in that: The detection point moving unit (30) further comprises a nut connecting bracket (33) fixedly connected to the detection component bracket (21); the mobile driving source (32) is a screw motor; the output end of the screw motor has a motor nut that can move forward and backward; the nut connecting bracket (33) is fixedly connected to the motor nut of the mobile driving source (32).

10. The bone position detection mechanism according to claim 9, characterized in that: The detection point moving unit (30) further comprises an origin detection sensor (34) fixed on the nut connection bracket (33), and an origin sensing piece (35) fixed on the detection component bracket (21), wherein the origin detection sensor (34) can sense the origin sensing piece (35).

11. The bone position detection mechanism according to claim 8, characterized in that: The device further comprises a avoidance unit (40), the avoidance unit (40) comprising a fixed avoidance mounting plate (41) and a avoidance driving source (42) mounted on the avoidance mounting plate (41), the avoidance driving source (42) being in transmission connection with the movable support bracket (31) to drive the movable support bracket (31) to move in a direction approaching or away from the front and rear cloth pieces; When the avoidance driving source (42) drives the movable support bracket (31) away from the front and rear cloth pieces, an avoidance area is formed between the movable support bracket (31) and the front and rear cloth pieces.

12. The bone position detection mechanism according to claim 11, characterized in that: The avoidance drive source (42) is a cylinder, and the avoidance unit (40) further includes an avoidance connection bracket (43) installed at the end of the cylinder piston rod of the avoidance drive source (42), a fixed limit mounting bracket (44), a limit screw (45) threadedly engaged in the limit mounting bracket (44), and a buffer body (46) fixed at the end of the limit screw (45), the movable support bracket (31) is fixedly connected to the avoidance connection bracket (43), and the avoidance connection bracket (43) can abut against the buffer body (46).

13. A double-piece stitching system, comprising a fixed equipment frame (103), a sewing table (104) fixed to the equipment frame (103), and a sewing machine (105) mounted on the equipment frame (103), characterized in that: It also includes the bone position detection mechanism (101) according to any one of claims 1 to 12, wherein the bone position detection mechanism (101) is installed on an equipment frame (103), and the bone position detection mechanism (101) and the sewing machine (105) are distributed in sequence along the feeding direction of the front piece of cloth.

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