Multi-functional vehicle mat carpet hemming machine

Abstract

The utility model discloses a multifunctional car mat carpet overlock machine, it includes: work table, overlock machine head, its installation on work table, supplementary overlock blanking device, it includes support frame, installs the swing frame in support frame rear side, is used for the drive module of driving swing frame to lift and depress relative overlock machine head, installs the presser foot plate in swing frame lower extreme and is used for pressing car mat carpet, installs the first pressure roller and first motor assembly for driving first pressure roller clockwise / counterclockwise rotation and rotation speed and is used for detecting the detection module of car mat carpet outer edge position in one side of swing frame lower extreme and is used for pressing car mat carpet to control car mat carpet moves or commutates back and forth to assist blanking second pressure roller and second motor assembly of car mat carpet, one of first, second pressure roller presses car mat carpet back, and the other then lifts up, cutting mechanism, its installation on overlock machine head side and is used for cutting sewing thread.

Description

Technical Field

[0001] This utility model relates to the field of overlock machine technology, and specifically to a multi-functional car mat and carpet overlock machine. Background Technology

[0002] Car carpets, also known as car floor mats, are environmentally friendly automotive interior parts that integrate five main functions: water absorption, dust absorption, stain removal, sound insulation, and protection of the main carpet layer. They serve to enhance aesthetics and comfort. During the manufacturing process of car carpets, uneven edges are a common issue. An edge-binding machine is used to treat the edges, improving the carpet's durability and quality stability, and preventing loose threads at the edges that could affect product quality.

[0003] Chinese utility model application No. 202222164093.4 discloses an edge-binding device for processing automotive carpets. It includes a workbench and a conveyor belt mounted on it. Above the conveyor belt, in sequence according to the carpet's travel direction, are a pressing mechanism, a sewing mechanism, and a lint-adhesive roller. The pressing mechanism includes a guide roller, a connecting shaft, and an adjusting component. The guide roller is rotatably mounted above the conveyor belt and perpendicular to the carpet's travel direction to guide the carpet's movement. The connecting shaft is parallel to the guide roller and connected to it via a connecting component. The adjusting component is connected to the connecting shaft and drives the connecting shaft and the guide roller to move synchronously up and down. The sewing mechanism moves up and down under the drive of the sewing component. Two edge-pressing rollers are symmetrically arranged on both sides of the workbench. These edge-pressing rollers are located above the conveyor belt and rotate under the drive of a driving component to press the carpet edges. The above-mentioned edge-binding device has advantages such as good material guiding effect and wide applicability.

[0004] The aforementioned edge-binding device can only bind one edge of the car carpet at a time. After completion, the car carpet needs to be manually rotated so that the second edge faces the sewing mechanism for edge binding. This process requires at least three manual rotations to bind all four edges of the car carpet. The entire process is labor-intensive and inefficient. For irregularly shaped car carpets (e.g., with concave edges), the aforementioned edge-binding device cannot directly bind all edges of the irregularly shaped car carpet, causing significant problems for manufacturers.

[0005] In view of the above, the inventors propose the following technical solution. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a multi-functional car mat and carpet overlock machine.

[0007] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: A multi-functional car mat / carpet edge-locking machine includes: a worktable; an edge-locking head, which is installed on the worktable and used for stitching the edges of car mats / carpets; and an auxiliary edge-locking feeding device, which includes a support frame fixed to the edge-locking head, a swing frame installed on the rear side of the support frame in a liftable and pressable manner, a drive module for driving the swing frame to lift and press down relative to the edge-locking head, a presser foot plate installed at the lower end of the swing frame for pressing down the car mat / carpet placed on the worktable, and a presser plate installed on one side of the lower end of the swing frame for... The system includes a first pressure roller that presses down on the car mat carpet to control its forward and backward movement or reversal, a first motor assembly for driving the first pressure roller to rotate clockwise / counterclockwise and controlling its rotation speed, a detection module for detecting the position of the outer edge of the car mat carpet, a second pressure roller mounted on the other side of the lower end of the swing frame to press down on the car mat carpet to control its backward movement to assist in feeding, and a second motor assembly for driving the second pressure roller to rotate; after one of the first and second pressure rollers presses down on the car mat carpet, the other lifts upward; and a cutting mechanism mounted on the side of the overlock machine head for cutting the seam thread.

[0008] Furthermore, in the above technical solution, the worktable is provided with a rotatable disc, which is located below the first pressure roller.

[0009] Furthermore, in the above technical solution, the cutting mechanism includes a lifting cylinder, a horizontal cylinder installed at the lower end of the lifting cylinder and driven by the lifting cylinder to achieve lifting, an inclined frame installed on one side of the horizontal cylinder and driven by the horizontal cylinder to move horizontally, and an electric or pneumatic shear installed on the inclined frame and inclined relative to the horizontal plane.

[0010] Furthermore, in the above technical solution, a smoothly connected support platform is provided around the workbench, and a freely rotatable ball bearing is provided on the support platform, with the upper surface of the ball bearing protruding beyond the upper surface of the support platform.

[0011] Furthermore, in the above technical solution, the upper end of the support frame protrudes beyond the upper end of the swing frame; the lower end of the support frame is hinged to the lower end of the swing frame via a hinge; the drive module includes a first connecting seat fixed to the upper end of the support frame, a second connecting seat fixed to the upper end of the swing frame, and a cylinder rotatably mounted on the second connecting seat, the piston rod end of the cylinder being rotatably connected to the first connecting seat via a rotating head.

[0012] Furthermore, in the above technical solution, the swing frame includes a swing cross plate hinged to the lower end of the support frame, a first mounting plate fixed to one end of the swing cross plate by a first straight rod and a first screw, an L-shaped reinforcing plate locked between the swing cross plate and the first mounting plate by a second screw, and a second mounting plate installed on the outside of the first mounting plate. The first pressure roller and pressure foot plate are installed on one side of the first mounting plate, and the first motor assembly is installed on the other side of the first mounting plate. The second pressure roller is installed on one side of the second mounting plate, and the second motor assembly is installed on the other side of the second mounting plate.

[0013] Furthermore, in the above technical solution, the first mounting plate can be adjusted in height or angle relative to the swinging horizontal plate; the second mounting plate can be adjusted in height or angle relative to the first mounting plate.

[0014] Furthermore, in the above technical solution, the pressure foot plate includes an L-shaped plate that is adjustablely installed on one side of the first mounting plate and a pressure plate that is adjustable in horizontal position and installed at the lower end of the L-shaped plate, both ends of which are curved upwards.

[0015] Furthermore, in the above technical solution, the detection module includes a crossbar installed on the outside of the overlock machine head, a mounting base installed at the lower end of the crossbar, a transverse seat passing through the lower end of the mounting base and adjustable in relative position, a swing arm installed at one end of the transverse seat and swaying left and right relative to the transverse seat, an L-shaped frame installed at the lower end of the swing arm, a detection needle installed on one side of the L-shaped frame for contacting the edge of the car mat / carpet, a balance spring installed between the upper end of the swing arm and the mounting base and driving the swing arm in the vertical direction, a detection block installed at the upper end of the swing arm, and a sensor installed on the mounting base and cooperating with the detection block. The crossbar can be adjusted in relative position to the overlock machine head in the Z-axis direction, and the mounting base can be adjusted in relative position to the crossbar in the Z-axis direction; the transverse seat can be adjusted in relative position to the mounting base in the X-axis direction, and the L-shaped frame can be adjusted in relative position to the swing arm in the Y-axis direction.

[0016] Furthermore, in the above technical solution, the first motor assembly includes a reducer fixed to the outer side of the lower end of the swing frame and a motor installed on the outer side of the reducer. The input shaft and output shaft of the reducer are perpendicular to each other, the rotating shaft of the motor is connected to the input shaft, and the output shaft is connected to the center of the first pressure roller. The structure of the second motor assembly is the same as that of the first motor assembly.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: When the overlock machine head is overlocking the outer edge of the car mat carpet, the auxiliary overlock feeding device flattens the car mat carpet to prevent it from curling up, which facilitates the improvement of the edge binding quality in the later stage. At the same time, the auxiliary overlock feeding device drives the car mat carpet to move and turn, so that the outer edge of the car mat carpet is moved to the overlock machine head, so that the overlock machine head can perform overlocking stitching in the later stage, which meets the edge binding requirements of irregularly shaped car mat carpets with large-angle notches. At the same time, there is no need to manually control the movement and turning of the car mat carpet, which can improve the edge binding efficiency. In addition, the auxiliary overlock feeding device can also press down the car mat carpet and convey it outward to achieve the function of assisting feeding, making the present invention highly competitive in the market. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a diagram of the internal structure of this utility model; Figure 3 This is a perspective view of the auxiliary edge-locking and feeding device in this utility model; Figure 4 This is an internal structural diagram from another perspective of this utility model; Figure 5 This is a perspective view of the cutting mechanism in this utility model; Figure 6 This is a perspective view of the detection module in this utility model. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0020] See Figure 1-6 As shown, a multi-functional car mat / carpet edge-locking machine includes: a worktable 1, an edge-locking head 2, an auxiliary edge-locking feeding device 3, and a cutting mechanism 5. During operation, the car mat / carpet is placed on the worktable 1, with its edge positioned at the edge-locking head 2. The auxiliary edge-locking feeding device 3 presses down on the car mat / carpet, driving it to move linearly or turn. Simultaneously, the edge-locking head 2 performs edge-locking on the car mat / carpet using a stitching method, thus achieving edge-locking processing of the car mat / carpet.

[0021] The workbench 1 is used to support the car mat carpet.

[0022] The workbench 1 is surrounded by a smoothly connected support platform 11, which increases the load-bearing area of ​​the workbench 1. The support platform 11 is equipped with freely rotatable ball bearings 12, the upper surface of which protrudes beyond the upper surface of the support platform 11. When a car mat / carpet is placed on the workbench 1 and the support platform 11, it will contact the upper end of the ball bearings 12, allowing the car mat / carpet to move more smoothly on the workbench 1 and the support platform 11, thus improving the efficiency of the stitching and edging.

[0023] The overlocking head 2 is installed on the workbench 1 and is used to overlock the edges of the car mat carpet.

[0024] When the overlock machine head 2 is overlocking the outer edge of the car mat carpet, the auxiliary overlock feeding device 3 flattens the car mat carpet to prevent it from curling up, which facilitates the improvement of overlocking quality later. At the same time, the auxiliary overlock feeding device 3 drives the car mat carpet to move and turn, so that the outer edge of the car mat carpet is moved to the overlock machine head 2, so that the overlock machine head 2 can perform overlocking later. This meets the overlocking requirements of irregularly shaped car mat carpets with large-angle notches. At the same time, there is no need to manually control the movement and turning of the car mat carpet, which can improve the overlocking efficiency. The auxiliary overlock feeding device 3 can also press down the car mat carpet and convey it outward to assist in the feeding function, making this utility model highly competitive in the market.

[0025] Specifically, the auxiliary overlocking feeding device 3 includes a support frame 31 fixed to the overlocking machine head 2, a swing frame 32 mounted on the rear side of the support frame 31 in a liftable and pressable manner, a drive module 33 for driving the swing frame 32 to lift and press down relative to the overlocking machine head 2, a presser foot 35 mounted on the lower end of the swing frame 32 for pressing down on the car mat carpet placed on the worktable 1, a first pressure roller 36 mounted on one side of the lower end of the swing frame 32 for pressing down on the car mat carpet to control the forward and backward movement or reversal of the car mat carpet, and a drive module 33 for driving the first pressure roller 36. The first motor assembly 38 for clockwise / counterclockwise rotation and rotation speed of wheel 36, and the detection module 37 for detecting the position of the outer edge of the car mat carpet, the second pressure roller 39 installed on the other side of the lower end of the swing frame 32 for pressing the car mat carpet to control the car mat carpet to move backward to assist in feeding, and the second motor assembly 30 for driving the second pressure roller 39 to rotate; after one of the first pressure roller 36 and the second pressure roller 39 presses down on the car mat carpet, the other lifts up; the cutting mechanism 5 is installed on the side of the overlock head 2 and is used to cut the seam thread.

[0026] In operation, before the car mat carpet is placed on the workbench 1, the auxiliary edge-locking and feeding device 3 operates first. The drive module 33 drives the swing frame 32 to swing upward relative to the support frame 31, thereby causing the entire swing frame 32, the presser foot 35, and the first pressure roller 36 to lift upward, so that the presser foot 35 and the first pressure roller 36 form a sufficiently large gap relative to the upper surface of the workbench 1. Then, the car mat carpet is placed on the upper surface of the workbench and pushed under the presser foot 35 and the first pressure roller 36. Finally, the drive module 33 drives the swing frame 32 to swing downward relative to the support frame 31, thereby causing the entire swing frame 32, the presser foot 35, and the first pressure roller 36 to press downward, so that the presser foot 35 and the first pressure roller 36 press on the upper surface of the car mat carpet. The presser foot 35 can flatten the car mat carpet, preventing the car mat carpet from curling up, which facilitates the improvement of the quality of the edge-locking machine head 2 for the entire outer edge of the car mat carpet in the later stage. After the first pressure roller 36 presses down on the car mat carpet, the second pressure roller 39 is in a raised state and does not contact the car mat carpet. Then, the first motor assembly 38 drives the first pressure roller 36 to rotate. While the first pressure roller 36 rotates, it can drive the car mat carpet to move in a straight line or turn, thereby controlling the stitching direction of the fabric strips wrapped on the car mat carpet. This requires no manual operation, reduces labor intensity, avoids hand injuries, and ensures that the stitching direction of the car mat carpet is always in the optimal direction, ensuring the edge-locking quality of the car mat carpet. At the same time, the detection module 37 detects the position of the outer edge of the car mat carpet in real time, determines that the outer edge of the car mat carpet is in the optimal position, ensures that the spacing of the subsequent edge-locking is equal, and thus ensures the edge-locking quality. The principle of the turning mechanism is as follows: When the convex edge of the car mat carpet is being edged, the detection module 37 detects that the outer edge (such as the corner) of the car mat carpet is convex. It controls the motor assembly 38 to drive the first pressure roller 36 to rotate counterclockwise. At the same time, it controls the rotation speed of the first pressure roller 36, thereby driving the car mat carpet to turn. This ensures that the edge-locking machine head 2 always sews at equidistant positions on the outer edge of the car mat carpet to achieve equidistant edge locking. Similarly, when the concave edge of the car mat carpet (such as the edge of a large-angle notch) is being edged, the detection module 37 detects that the outer edge of the car mat carpet is concave. It controls the first motor assembly 38 to drive the first pressure roller 36 to rotate clockwise. At the same time, it controls the rotation speed of the first pressure roller 36, thereby driving the car mat carpet to turn. This ensures that the machine head always sews at equidistant positions on the outer edge of the car mat carpet to achieve equidistant edge locking. This ensures that the stitching direction of the fabric strips wrapped on the car mat carpet is always in the optimal direction, and there will be no crooked stitching, thus ensuring the edge-locking quality of the car mat carpet.At this time, the car mat carpet with the edge locked will move to below the second pressure roller 39, and then the drive module 33 will drive the swing frame 32 to swing upward relative to the support frame 31, thereby driving the entire swing frame 32, the pressure foot plate 35, and the first pressure roller 36 to lift upward. At the same time, the second pressure roller 39 will be driven to move downward to press on the car mat carpet. The cutting mechanism 5 will work to cut the seam. Finally, the second motor assembly 30 will drive the second pressure roller 39 to rotate, thereby controlling the car mat carpet to move backward to assist in unloading, thus achieving the function of assisting in unloading and greatly improving work efficiency.

[0027] The workbench 1 is equipped with a rotatable disc 10, which is located below the first pressure roller 36. The added disc 10 has the following function: when the first pressure roller 36 presses down and drives the car mat carpet to turn, the disc 10 will rotate accordingly, so as to control the turning of the car mat carpet and thus achieve better edge sealing quality.

[0028] The cutting mechanism 5 includes a lifting cylinder 51, a horizontal cylinder 52 installed at the lower end of the lifting cylinder 51 and driven by the lifting cylinder 51 to achieve lifting and lowering, an inclined frame 53 installed on one side of the horizontal cylinder 52 and driven by the horizontal cylinder 52 to move horizontally, and an electric or pneumatic scissors 54 installed on the inclined frame 53 and inclined relative to the horizontal plane. During operation, the lifting cylinder 51 drives the electric or pneumatic scissors 54 to move downwards, and the horizontal cylinder 52 drives the electric or pneumatic scissors 54 to move horizontally, controlling the electric or pneumatic scissors 54 to move horizontally to the position where the wire needs to be cut, and the electric or pneumatic scissors 54 can better achieve wire cutting. At the same time, the electric or pneumatic scissors 54 is in a suspended state, making its installation more convenient and enabling better wire cutting.

[0029] The upper end of the support frame 31 protrudes beyond the upper end of the swing frame 32; the lower end of the support frame 31 and the lower end of the swing frame 32 are hinged by a hinge 30. Its structure is extremely simple and its installation is extremely easy, and it can stably install the swing frame 32 on the rear side of the support frame 31.

[0030] The drive module 33 includes a first connecting seat 331 fixed to the upper end of the support frame 31, a second connecting seat 332 fixed to the upper end of the swing frame 32, and a cylinder 333 rotatably mounted on the second connecting seat 332. The piston rod 334 of the cylinder 333 is rotatably connected to the first connecting seat 331 through a rotating head 335. Its assembly structure is simple, easy to install and low in cost.

[0031] The swing frame 32 includes a swing horizontal plate 321 hinged to the lower end of the support frame 31, a first mounting plate 323 fixed to one end of the swing horizontal plate 321 by a first straight rod 322 and a first screw, an L-shaped reinforcing plate 324 locked between the swing horizontal plate 321 and the first mounting plate 323 by a second screw, and a second mounting plate 325 installed on the outside of the first mounting plate 323. The first pressure roller 36 and the pressure foot plate 35 are installed on one side of the first mounting plate 323, and the first motor assembly 38 is installed on the other side of the first mounting plate 323. The second pressure roller 39 is installed on one side of the second mounting plate 325, and the second motor assembly 30 is installed on the other side of the second mounting plate 325. Its assembly structure is simple and stable.

[0032] The first mounting plate 323 can be adjusted in height or angle relative to the swing plate 321; the second mounting plate 325 can be adjusted in height or angle relative to the first mounting plate 323, and can adjust the height of the first pressure roller 36 and the second pressure roller 39 to meet different usage requirements.

[0033] The presser foot plate 35 includes an L-shaped plate 351 that is adjustablely installed on one side of the first mounting plate 323 and a pressure plate 352 that is adjustable in horizontal position installed at the lower end of the L-shaped plate 351, so as to meet the pressing use of car mats and carpets of different thicknesses. Both ends of the pressure plate 352 are curved upwards from bottom to top, which can better press the car mats and carpets.

[0034] The detection module 37 includes a crossbar 371 installed on the outside of the overlock machine head 2, a mounting base 372 installed at the lower end of the crossbar 371, a transverse seat 379 passing through the lower end of the mounting base 372 and adjustable in relative position, a swing rod 373 installed at one end of the transverse seat 379 and swinging left and right relative to the transverse seat 379, an L-shaped frame 374 installed at the lower end of the swing rod 373, a detection needle 375 installed on one side of the L-shaped frame 374 and used to contact the edge of the car mat carpet, a balance spring 376 installed between the upper end of the swing rod 373 and the mounting base 372 and driving the swing rod 373 in the vertical direction, a detection block 377 installed at the upper end of the swing rod 373, and a sensor 378 installed on the mounting base 372 and cooperating with the detection block 377. Before the detection module 37 is working, the swing rod 373 is kept in the vertical direction under the action of the balance spring 376, that is, in a balanced state. During operation, the outer edge of the car mat carpet contacts the outer side of the detection needle 375. When the edge of the car mat carpet shifts, the car mat carpet will push the detection needle 375 to swing. The detection needle 375 will drive the L-shaped frame 374, the swing rod 373, and the detection block 377 to swing synchronously. At this time, the sensor 378 detects the distance the detection block 377 moves to determine the swing amplitude of the detection needle 375, and then controls the rotation direction and speed of the first motor assembly 38 to drive the first pressure roller 36, thereby driving the car mat carpet to change its moving direction, and thus adjusting the stitching direction of the car mat carpet to always be in the optimal direction, so that the machine head always stitches at equal intervals on the outer edge of the car mat carpet to achieve equal-distance edge binding.

[0035] The crossbar 371 can be adjusted relative to the overlock head 2 in the Z-axis direction, and the mounting base 372 can be adjusted relative to the crossbar 371 in the Z-axis direction; the transverse seat 379 can be adjusted relative to the mounting base 372 in the X-axis direction, and the L-shaped frame 374 can be adjusted relative to the swing arm 373 in the Y-axis direction, thereby achieving multi-directional adjustment, facilitating the debugging of the detection module 37, and improving the detection quality.

[0036] The first motor assembly 38 includes a reducer 381 fixed to the outer side of the lower end of the swing frame 32 and a motor 382 mounted on the outer side of the reducer 381. The input and output shafts of the reducer 381 are perpendicular. The shaft of the motor 382 is connected to the input shaft, and the output shaft is centrally connected to the first pressure roller 36. This allows the motor 382 to be positioned parallel to the outer side of the lower end of the swing frame 32, reducing lateral extension space and thus minimizing space occupation. The structure of the second motor assembly 30 is the same as that of the first motor assembly 38.

[0037] In summary, when the overlock sewing machine head 2 is sewing the outer edge of the car mat carpet, the auxiliary overlock feeding device 3 flattens the car mat carpet to prevent it from curling up, which facilitates the improvement of the edge binding quality later. At the same time, the auxiliary overlock feeding device 3 drives the car mat carpet to move and turn, so that the outer edge of the car mat carpet is moved to the overlock sewing machine head 2, so that the overlock sewing machine head 2 can perform the sewing and overlock sewing later, which meets the edge binding requirements of irregularly shaped car mat carpets with large-angle notches. At the same time, there is no need to manually control the movement and turning of the car mat carpet, which can improve the edge binding efficiency. In addition, the auxiliary overlock feeding device 3 can also press down the car mat carpet and convey it outward to achieve the function of assisting the feeding, making this utility model highly competitive in the market.

[0038] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A multi-functional car mat and carpet overlock machine, characterized in that: include: Workbench (1); The overlock head (2) is mounted on the workbench (1) and is used to overlock the edges of car mat carpets; The auxiliary overlocking feeding device (3) includes a support frame (31) fixed on the overlocking head (2), a swing frame (32) mounted on the rear side of the support frame (31) in a liftable and pressable manner, a drive module (33) for driving the swing frame (32) to lift and press down relative to the overlocking head (2), a presser foot plate (35) mounted on the lower end of the swing frame (32) for pressing down the car mat carpet placed on the worktable (1), and a first presser foot plate mounted on one side of the lower end of the swing frame (32) for pressing down the car mat carpet to control the forward and backward movement or reversal of the car mat carpet. The first pressure roller (36) and the first motor assembly (38) for driving the first pressure roller (36) to rotate clockwise / counterclockwise and the rotation speed, and the detection module (37) for detecting the position of the outer edge of the car mat carpet, the second pressure roller (39) installed on the other side of the lower end of the swing frame (32) and used to press down the car mat carpet to control the car mat carpet to move backward to assist in the unloading, and the second motor assembly (30) for driving the second pressure roller (39) to rotate; after one of the first pressure roller (36) and the second pressure roller (39) presses down on the car mat carpet, the other lifts up; The cutting mechanism (5) is installed on the side of the overlock head (2) and is used to cut the sewing thread.

2. The multi-functional car mat and carpet overlock machine according to claim 1, characterized in that: The workbench (1) is provided with a rotatable disc (10) located below the first pressure roller (36).

3. The multi-functional car mat and carpet overlock machine according to claim 1, characterized in that: The cutting mechanism (5) includes a lifting cylinder (51), a horizontal cylinder (52) installed at the lower end of the lifting cylinder (51) and driven by the lifting cylinder (51) to achieve lifting, an inclined frame (53) installed on one side of the horizontal cylinder (52) and driven by the horizontal cylinder (52) to move horizontally, and an electric or pneumatic scissors (54) installed on the inclined frame (53) and inclined relative to the horizontal plane.

4. The multi-functional car mat and carpet overlock machine according to claim 1, characterized in that: The workbench (1) is surrounded by a smoothly connected support platform (11), on which a freely rotatable ball bearing (12) is provided, the upper surface of which protrudes beyond the upper surface of the support platform (11).

5. The multi-functional car mat and carpet overlock machine according to any one of claims 1-4, characterized in that: The upper end of the support frame (31) protrudes beyond the upper end of the swing frame (32); the lower end of the support frame (31) is hinged to the lower end of the swing frame (32) by a hinge (30); the drive module (33) includes a first connecting seat (331) fixed to the upper end of the support frame (31), a second connecting seat (332) fixed to the upper end of the swing frame (32), and a cylinder (333) rotatably mounted on the second connecting seat (332). The piston rod (334) of the cylinder (333) is rotatably connected to the first connecting seat (331) through a rotating head (335).

6. The multi-functional car mat and carpet overlock machine according to any one of claims 1-4, characterized in that: The swing frame (32) includes a swing cross plate (321) hinged to the lower end of the support frame (31), a first mounting plate (323) fixed to one end of the swing cross plate (321) by a first straight rod (322) and a first screw, an L-shaped reinforcing plate (324) locked between the swing cross plate (321) and the first mounting plate (323) by a second screw, and a second mounting plate (325) installed on the outside of the first mounting plate (323). The first pressure roller (36) and the pressure foot plate (35) are installed on one side of the first mounting plate (323), and the first motor assembly (38) is installed on the other side of the first mounting plate (323). The second pressure roller (39) is installed on one side of the second mounting plate (325), and the second motor assembly (30) is installed on the other side of the second mounting plate (325).

7. The multi-functional car mat and carpet overlock machine according to claim 6, characterized in that: The first mounting plate (323) can be adjusted in height or angle relative to the swing plate (321); the second mounting plate (325) can be adjusted in height or angle relative to the first mounting plate (323).

8. The multi-functional car mat and carpet overlock machine according to claim 6, characterized in that: The presser foot plate (35) includes an L-shaped plate (351) that is adjustablely mounted on one side of the first mounting plate (323) and a pressure plate (352) that is adjustable in horizontal position mounted on the lower end of the L-shaped plate (351). Both ends of the pressure plate (352) are curved upwards from bottom to top.

9. The multi-functional car mat and carpet overlock machine according to any one of claims 1-4, characterized in that: The detection module (37) includes a crossbar (371) installed on the outside of the overlock machine head (2), a mounting base (372) installed at the lower end of the crossbar (371), a transverse seat (379) passing through the lower end of the mounting base (372) and adjustable in relative position, a swing rod (373) installed at one end of the transverse seat (379) and swinging left and right relative to the transverse seat (379), an L-shaped frame (374) installed at the lower end of the swing rod (373), a detection needle (375) installed on one side of the L-shaped frame (374) and used to contact the edge of the car mat carpet, and a drive pin installed between the upper end of the swing rod (373) and the mounting base (372). The system includes a balance spring (376) that keeps the swing arm (373) in the vertical direction, a detection block (377) mounted on the upper end of the swing arm (373), and a sensor (378) mounted on the mounting base (372) and cooperating with the detection block (377). The crossbar (371) can be adjusted relative to the overlock head (2) in the Z-axis direction, and the mounting base (372) can be adjusted relative to the crossbar (371) in the Z-axis direction. The transverse seat (379) can be adjusted relative to the mounting base (372) in the X-axis direction, and the L-shaped frame (374) can be adjusted relative to the swing arm (373) in the Y-axis direction.

10. The multi-functional car mat and carpet overlock machine according to claim 9, characterized in that: The first motor assembly (38) includes a reducer (381) fixed to the outer side of the lower end of the swing frame (32) and a motor (382) mounted on the outer side of the reducer (381). The input shaft and output shaft of the reducer (381) are perpendicular to each other. The rotating shaft of the motor (382) is connected to the input shaft, and the output shaft is connected to the center of the first pressure roller (36). The structure of the second motor assembly (30) is the same as that of the first motor assembly (38).

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