Continuous lower edge folding device of hemming machine

Abstract

The utility model discloses a continuous lower folding device of a hemming machine, which comprises a first folding mechanism and a second folding mechanism, a first folding conveying belt is positioned on the outer side of a cloth supporting plate I, and the top surfaces of the first folding conveying belt and the second folding conveying belt are flush with each other; the first folding plate covers the first cloth supporting plate and the upper portion of the first folding conveying belt at the cloth outlet end in a spaced mode, and the cloth guide rod is arranged on the outer side of the cloth inlet end of the first folding plate. After the second-folding mechanism is connected to the cloth outlet end of the first-folding mechanism, a guide plate of the second-folding mechanism is located on the outer side of a second cloth supporting plate, a second-folding conveying belt is located on the outer side of the guide plate, a guide groove is formed in the upper surface of the guide plate, the front half section of the guide plate from the cloth inlet end to the cloth outlet end becomes high from low, the rear half section of the guide plate is horizontal, and the guide groove gradually gets close to the second-folding conveying belt. The second-fold squeezing and folding piece is connected into the guide groove in a sliding mode, the second-fold plate covers the second cloth supporting plate, the upper portion of the second-fold squeezing and folding piece is arranged in a clearance mode, and the upper pressing belt pair is arranged above the cloth outlet end of the second-fold conveying belt. Flanges are folded in the walking process of the device, continuous operation is achieved, the production efficiency is high, and the product quality is high.

Description

Technical Field

[0001] The utility model relates to the field of hemming machines, in particular to a continuous lower hemming device of the hemming machine. Background Art

[0002] The hemming machine is used for folding and hemming the edges of textiles. For small-sized towel products, they are generally cut into individual items first, and then the towels are folded completely on one side one by one using a folding gripper, and then sent to the next hemming device for hemming. It is an intermittent operation, one piece at a time. It is difficult to adapt to the folding operation of products such as bed sheets and bath towels with very long single sides. The mechanism required for the folding plate when the fabric is in a static state is too long, the processing difficulty is high, and the folding quality is unstable. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a continuous lower folding device of a sewing machine, which can complete the folding and subsequent sewing of fabrics while the fabrics are moving, and the operation is continuous and uninterrupted, with high production efficiency and high product quality.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The continuous bottom folding device of the hemming machine includes a first folding mechanism and a second folding mechanism.

[0006] The folding mechanism comprises a cloth guide rod, a folding plate, a cloth support plate, a folding conveyor belt and a driving mechanism thereof, wherein the folding conveyor belt is located outside the cloth support plate and the top surfaces of the two are flush, the folding conveyor belt is inclined from the cloth inlet end away from the cloth support plate to the cloth outlet end close to the cloth support plate, a folding plate is arranged to cover the gap above the cloth support plate and the folding conveyor belt at the cloth outlet end, and the cloth guide rod is arranged outside the cloth inlet end of the folding plate;

[0007] The two-fold mechanism is connected to the cloth outlet end of the one-fold mechanism, and the two-fold mechanism includes a two-fold plate, a second cloth supporting plate, a guide plate, a two-fold extrusion piece and its driving mechanism, a two-fold conveyor belt and its driving mechanism, an upper pressure belt and its driving mechanism, the guide plate is located on the outer side of the second cloth supporting plate, the two-fold conveyor belt is located on the outer side of the guide plate, a guide groove is arranged on the upper surface of the guide plate, the guide plate changes from low to high in the front half from the cloth inlet end to the cloth outlet end, and is horizontal in the rear half, the guide groove gradually approaches the two-fold conveyor belt, the two-fold extrusion piece is slidably connected in the guide groove, the two-fold plate covers the gap above the second cloth supporting plate and the two-fold extrusion piece, and the upper pressure belt is arranged above the cloth outlet end of the two-fold conveyor belt.

[0008] A further improvement is that the gap between the first folding plate and the cloth supporting plate gradually decreases from the cloth feeding end to the cloth discharging end.

[0009] A further improvement is that the driving mechanism of the two-fold extrusion member is a motor-driven sprocket, a chain is wound around the sprocket, the two-fold extrusion member is arranged and movably plugged into the chain, and the bottom connecting slide bar of the two-fold extrusion member is clamped in the guide groove of the guide plate.

[0010] A further improvement is that a spring pressure assembly is provided below the two-fold conveyor belt.

[0011] A further improvement is that the two-fold plate is a rectangular long plate that is bent downward at the outer side of the bottom surface near the cloth outlet end to form an extrusion cavity, and a long notch is cut at a corresponding position on the plate surface, and the end surface of the extrusion cavity is a horizontal inverted U shape.

[0012] A further improvement is that a guide plate is provided at the cloth feeding end of the second folding plate, the outer side edge of the first folding plate is bent downward and inward to form an inverted U-shaped bending cavity, and the guide plate is inserted into the bending cavity of the first folding plate.

[0013] A further improvement is that the driving mechanisms of the single-fold conveyor belt, the double-fold conveyor belt and the upper pressure belt are respectively driven by motors to rotate pulleys, and the single-fold conveyor belt, the double-fold conveyor belt and the upper pressure belt are wound around the pulleys.

[0014] A further improvement is that the driving mechanisms of the single-fold conveyor belt, the double-fold conveyor belt and the upper pressure belt also include a tensioning wheel, and the single-fold conveyor belt, the double-fold conveyor belt and the upper pressure belt are respectively wound around the tensioning wheel. Beneficial Effects

[0015] The starting end of the fabric edge enters the first folding plate under the guidance of the cloth guide rod, completes the first fold and enters the second folding position with the cooperation of the first folding conveyor belt, the second folding squeezer runs along the slide groove of the guide plate, pushes the fabric edge that has completed the first fold to the second folding plate, and completes the second fold of the fabric edge with the cooperation of the second folding squeezer and the second folding plate. The second folding squeezer leaves the guide plate at the walking track at the tail end of the slide groove, releases the folding of the fabric edge, and the fabric edge that has completed the second fold is clamped between the upper pressing belt and the second folding conveyor belt and transported to the lower seam edge station, and the folding operation is continuous. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a top view of the two-folding mechanism of the utility model (excluding the two-folding plate, the two-folding conveyor belt and the upper pressure belt component);

[0018] Figure 3 for Figure 2 Schematic diagram of removing the second support plate and retaining only one set of two-fold extrusion parts;

[0019] Figure 4 for Figure 3 Left side view;

[0020] Figure 5 is a schematic diagram of a folded plate structure;

[0021] Figure 6 Schematic diagram of the two-fold plate structure. DETAILED DESCRIPTION

[0022] As shown Figures 1 to 6 As shown, the utility model includes a folding mechanism and a two-folding mechanism, the one-folding mechanism includes a cloth guide rod 11, a folding plate 12, a cloth supporting plate 13, a folding conveyor belt 14 and its driving mechanism, the one-folding conveyor belt 14 is located on the outside of the cloth supporting plate 13 and the top surfaces of the two are flush, the one-folding conveyor belt 14 is inclined from the cloth feeding end away from the cloth supporting plate 1 to the cloth outlet end close to the cloth supporting plate 1, the one-folding plate 12 covers the gap above the cloth supporting plate 1 and the cloth outlet end, the cloth guide rod 11 is arranged on the outside of the cloth feeding end of the one-folding plate 12; the gap between the one-folding plate 12 and the cloth supporting plate 13 gradually decreases from the cloth feeding end to the cloth outlet end, the outer side edge of the one-folding plate 12 is bent downward and inward to form a horizontally inverted U-shaped bending cavity, the outer side edge of the one-folding plate forms an arc edge, and the cloth edge will not be scratched during the walking process;

[0023] The two-fold mechanism is connected to the cloth outlet end of the one-fold mechanism, and the two-fold mechanism includes a two-fold plate 21, a cloth supporting plate 22, a guide plate 23, a two-fold extrusion piece 24 and its driving mechanism, a two-fold conveyor belt 25 and its driving mechanism, an upper pressure belt 26 and its driving mechanism, the guide plate 23 is located on the outside of the cloth supporting plate 22, the two-fold conveyor belt 25 is located on the outside of the guide plate 23, a guide groove 231 is arranged on the upper surface of the guide plate 23, the guide plate 23 changes from low to high in the front half from the cloth inlet end to the cloth outlet end, and is horizontal in the rear half, the guide groove 231 gradually approaches the two-fold conveyor belt 25, the two-fold extrusion piece 24 is slidably connected in the guide groove 231, the two-fold plate 21 covers the gap above the cloth supporting plate 22 and the two-fold extrusion piece 24, the upper pressure belt 26 is arranged above the cloth outlet end of the two-fold conveyor belt 25; a spring pressing component 29 is arranged below the two-fold conveyor belt 25.

[0024] The driving mechanism of the double folding and extruding member 24 is a motor-driven sprocket 27, a chain 28 is wound around the sprocket 27, the double folding and extruding member 24 is arranged and movably plugged into the chain 28, and a connecting slide bar 241 at the bottom of the double folding and extruding member 24 is clamped in the guide groove 231 of the guide plate.

[0025] The second folding plate 21 is a rectangular long plate which is bent downward on the outer side of the bottom surface near the cloth outlet end to form an extrusion folding cavity, and a long notch is cut at a corresponding position on the plate surface. The end surface of the extrusion folding cavity is a horizontally inverted U shape. A guide plate 20 is provided at the cloth inlet end of the second folding plate 21. The guide plate is inserted into the bending cavity of the first folding plate to effectively control the height of the first folding plate to be flush with the second folding plate.

[0026] The driving mechanisms of the single-fold conveyor belt 14, the double-fold conveyor belt 25 and the upper pressure belt 26 are respectively driven by motors to rotate pulleys, and the single-fold conveyor belt, the double-fold conveyor belt and the upper pressure belt are wound around the pulleys.

[0027] The driving mechanism of the one-fold conveyor belt, the two-fold conveyor belt and the upper pressure belt also includes a tensioning wheel, and the one-fold conveyor belt, the two-fold conveyor belt and the upper pressure belt are respectively wound around the tensioning wheel.

[0028] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. The continuous lower folding device of the hemming machine includes a primary folding mechanism and a secondary folding mechanism, and is characterized by: The folding mechanism comprises a cloth guide rod (11), a folding plate (12), a cloth support plate (13), a folding conveyor belt (14) and a driving mechanism thereof, wherein the folding conveyor belt (14) is located outside the cloth support plate (13) and the top surfaces of the two are flush, the folding conveyor belt (14) is inclined from the cloth inlet end away from the cloth support plate (1) to the cloth outlet end close to the cloth support plate (1), the folding plate (12) is arranged to cover the gap above the cloth support plate (1) and the folding conveyor belt at the cloth outlet end, and the cloth guide rod (11) is arranged outside the cloth inlet end of the folding plate (12); The two-fold mechanism is connected to the cloth outlet end of the first fold mechanism. The two-fold mechanism comprises a two-fold plate (21), a second cloth supporting plate (22), a guide plate (23), a two-fold extrusion folding member (24) and its driving mechanism, a two-fold conveyor belt (25) and its driving mechanism, and an upper pressure belt (26) and its driving mechanism. The guide plate (23) is located outside the second cloth supporting plate (22). The two-fold conveyor belt (25) is located outside the guide plate (23). A guide groove (231) is provided on the upper surface of the guide plate (23). The guide plate (23) changes from low to high in the front half from the cloth inlet end to the cloth outlet end, and is horizontal in the rear half. The guide groove (231) gradually approaches the two-fold conveyor belt (25). The two-fold extrusion folding member (24) is slidably connected in the guide groove (231). The two-fold plate (21) covers the gap above the second cloth supporting plate (22) and the two-fold extrusion folding member (24). The upper pressure belt (26) is arranged above the cloth outlet end of the two-fold conveyor belt (25).

2. The continuous bottom folding device of the hemming machine according to claim 1, characterized in that: The gap between the first folding plate (12) and the first cloth supporting plate (13) gradually decreases from the cloth inlet end to the cloth outlet end.

3. The continuous bottom folding device of the hemming machine according to claim 1, characterized in that: The driving mechanism of the double-folding and extruding member (24) is a motor-driven sprocket (27), a chain (28) is wound around the sprocket (27), the double-folding and extruding member (24) is arranged and movably plugged on the chain (28), and a connecting slide bar (241) at the bottom of the double-folding and extruding member (24) is clamped in a guide groove (231) of the guide plate.

4. The continuous bottom folding device of the hemming machine according to claim 1, characterized in that: A spring pressing assembly (29) is provided below the two-fold conveyor belt (25).

5. The continuous bottom folding device of the hemming machine according to claim 1, characterized in that: The two folding plates (21) are rectangular long plates which are bent downwards at the outer side of the bottom surface near the cloth outlet end to form an extrusion folding cavity, and long notches are cut at corresponding positions on the plate surface, and the end surface of the extrusion folding cavity is in a horizontally inverted U shape.

6. The continuous bottom folding device of the hemming machine according to claim 5, characterized in that: The cloth feeding end of the second folding plate (21) is provided with a guide plate (20), the outer side of the first folding plate (12) is bent downward and inward to form a horizontally inverted U-shaped bending cavity, and the guide plate is inserted into the first folding plate bending cavity.

7. The continuous bottom folding device of the hemming machine according to claim 1, characterized in that: The driving mechanisms of the single-fold conveyor belt (14), the double-fold conveyor belt (25) and the upper pressure belt (26) are respectively driven by motors to rotate pulleys, and the single-fold conveyor belt, the double-fold conveyor belt and the upper pressure belt are wound around the pulleys.

8. The continuous bottom folding device of the hemming machine according to claim 7, characterized in that: The driving mechanisms of the one-fold conveyor belt, the two-fold conveyor belt and the upper pressure belt also include a tensioning wheel, and the one-fold conveyor belt, the two-fold conveyor belt and the upper pressure belt are respectively wound around the tensioning wheel.

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