Automatic propulsion device for blinds blades

Abstract

The invention discloses an automatic pushing device for inserting strips of venetian blinds, comprising a frame and a blade pressing mechanism, a hole expanding mechanism and a strip pushing mechanism are slidably connected above the frame, the hole expanding mechanism is placed on the left side of the strip pushing mechanism, the blade pressing mechanism is placed on the left side of the hole expanding mechanism, the hole expanding mechanism is provided with a mounting block, the end face of the mounting block is provided with a mounting hole penetrating the mounting block, the mounting hole is sleeved with a hole expanding tube, the wall of the hole expanding tube is provided with an exhaust hole, a contraction block is provided on the outside of the mounting block, the strip pushing mechanism is provided with a V-shaped bracket, the bracket is provided with a fixed inclined surface and a guide inclined surface, the top surface of the fixed inclined surface is slidably connected with a support plate, the lower bottom surface is provided with a guide block, the support plate is provided with a strip, the fixed inclined surface is fixedly connected with a guide rod assembly, a push rod assembly is provided below the guide rod assembly, the push rod assembly is provided with a power wheel and a guide wheel, the power wheel and the guide wheel form a U-shaped push rod groove, and the central axis of the hole expanding tube coincides with the central line of the push rod groove. The beneficial effects of the invention are: increasing the success rate of hole expansion; and realizing automatic operation.

Description

Technical Field

[0001] The invention relates to the technical field related to blinds, and in particular to an automatic blade threading device for blinds. Background Art

[0002] Venetian blinds have many characteristics such as easy operation, low price, and adjustable angle, and are gradually replacing traditional fabric curtains in the consumer market.

[0003] In the existing blinds blade strip threading machine, there are a pressing device and a strip threading device. The pressing device presses the middle part of the blinds blade, and the perforated part of the blade is suspended in the air. The strip threading device needs to push the strip into the perforated part of the blade to complete the strip threading operation. The strip threading device is provided with a lateral pushing component and a conversion component. The conversion component includes a hole expansion mechanism and a strip threading introduction mechanism. The hole expansion mechanism can open the perforation of the blade through a hole expansion needle, and then switch to the strip threading introduction mechanism to insert the strip into the perforation of the blade to complete the blade strip threading operation. However, in the existing strip threading machine, it is still necessary to manually place the strip into the strip threading introduction mechanism, which is cumbersome and wastes labor. At the same time, the hole expansion mechanism uses a hole expansion needle to expand the hole, which has the risk of hole expansion failure. After the hole expansion fails, the blade strip threading operation cannot be achieved. Summary of the invention

[0004] The present invention aims to overcome the risk of hole expansion failure in the prior art hole expansion mechanism and the shortcomings that the strips still need to be manually placed in the strip insertion introduction mechanism when threading. It provides an automatic blinds blade strip insertion automatic advancement device with high hole expansion success rate and no need for manual placement of the strips.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for automatically advancing the blade strips of a venetian blind, comprising a frame and a blade pressing mechanism, the upper surface of the frame is slidably connected with a hole expanding mechanism and a strip pushing mechanism, the hole expanding mechanism is placed on the left side of the strip pushing mechanism, the blade pressing mechanism is placed on the left side of the hole expanding mechanism, the hole expanding mechanism is provided with a mounting block, the end face of the mounting block is provided with a mounting hole that passes through the mounting block, the mounting hole is sleeved with a hole expanding tube, the wall of the hole expanding tube is provided with an exhaust hole, the outer side of the mounting block is connected with a shrinking block, the shrinking block and the hole expanding tube are in the same horizontal plane, the strip pushing mechanism is provided with a bracket, the bracket has a V-shaped cross-section, the inner wall of the bracket is provided with a fixed inclined surface and a guide inclined surface, the top surface of the fixed inclined surface is slidably connected with a support plate, the lower bottom surface is provided with a guide block, a plurality of strips are provided on the support plate, the fixed inclined surface is fixedly connected with a guide rod assembly, the lower surface of the guide rod assembly A push rod assembly is provided, and the push rod assembly is provided with a power wheel and a guide wheel, the side elevation of the power wheel and the outer side surface of the guide wheel form a U-shaped push rod groove, the central axis of the expansion tube coincides with the center line of the push rod groove, the support plate is a strip plate, and bending plates are provided on both sides of the support plate, the bending plates are perpendicular to the guide inclined surface, and the side surfaces of the bending plate and the guide inclined surface form a through hole, and the width of the through hole is sufficient to allow only one through bar to pass through, the guide rod assembly includes a fixed frame and a guide rod wheel, the fixed frame is a strip plate, one end of the fixed frame is fixed on the fixed inclined surface, and the other end is rotatably connected to the guide rod wheel, the guide rod wheel includes a wheel axle and a partition, the wheel axle is a cylinder, a motor is fixedly connected to the end face of the wheel axle, the partition is fixedly connected to the side surface of the wheel axle, the partitions are evenly arranged around the outer side surface of the wheel axle, and the width of the spacing between adjacent partitions is greater than the diameter of the through bar and less than 2 times the diameter of the through bar.

[0007] The upper surface of the frame is slidably connected with a hole-expanding mechanism and a strip-threading pushing mechanism. The hole-expanding mechanism is placed on the left side of the strip-threading pushing mechanism, and the blade-pressing mechanism is placed on the left side of the hole-expanding mechanism. The blade-pressing mechanism fixes and presses the blinds blades. The hole-expanding mechanism is provided with two mounting blocks. The mounting blocks are connected with hole-expanding tubes. The tube wall of the hole-expanding tube is provided with exhaust holes. The opening end of the exhaust hole faces the blade-pressing mechanism, and high-pressure gas can be blown out of the exhaust hole. The outer side of the mounting block is connected with a contraction block. When the hole-expanding mechanism is needed to expand the blade, the hole-expanding mechanism moves toward the blade-pressing device. When it reaches a certain position, the contraction blocks on both sides contract inward, and the inner surface of the contraction block squeezes the blade. At the same time, the exhaust pipe blows high-pressure gas to the compressed blade. The contraction of the contraction block and the blown high-pressure gas work together to open the perforation of the blade. At this time, the hole-expanding mechanism continues to move toward the blade-pressing device, so that the hole-expanding tube is inserted into the perforation of the blade to complete the hole-expanding operation. When the blade to be threaded is a single-sided threaded strip, the threading pushing mechanism only needs to set a bracket to complete the threading operation. When the blade to be threaded is a double-sided threaded strip, the threading strip pushing mechanism is provided with two symmetrical brackets. The cross section of the bracket is V-shaped, and the V-shaped inner wall of the bracket is provided with a fixed inclined plane and a guide inclined plane. A support plate is connected to the top surface of one end of the fixed inclined plane, and a number of threading strips can be placed on the support plate. The threading strips on the support plate can slide down along the guide inclined plane. A guide rod assembly is fixedly connected to the fixed inclined plane, and the guide rod assembly can drop the threading strips sliding down along the guide inclined plane one by one. A push rod assembly is arranged below the guide rod assembly, and the push rod assembly includes a power wheel and a guide wheel, and the side elevation of the power wheel and the outer side surface of the guide wheel form a U-shaped push rod groove. The dropped threading strip enters the push rod groove, and the threading strip contacts the side elevation of the power wheel and the outer side surface of the guide wheel respectively. The central axis of the expansion tube coincides with the central axis of the push rod groove. The rotation of the power wheel can push the threading strip toward the expansion mechanism, and the guide wheel provides a guiding effect, so that the pushed threading strips accurately enter the expansion tube. The threading strip pushed out from the push rod assembly passes through the reaming tube and enters the perforation of the blade. The reaming tube provides a guide for the movement of the threading strip. When the power wheel completely pushes the threading strip through the reaming mechanism and completes the blade threading operation, the guide rod assembly rotates to drop the next threading strip and continues to push the next threading strip. The extrusion of the contraction block and the blown high-pressure gas work together to better realize the reaming operation and improve the success rate of reaming; the threading strip pushing mechanism does not require manual placement of the threading strip and can be operated automatically. The bending plate guides the movement of the threading strip from the support plate to the guide slope. The gap formed by the bending plate and the guide slope can ensure that the threading strips pass through the gap one by one and enter the guide rod assembly along the guide slope. The fixed slope can fix the guide rod wheel between the fixed slope and the guide slope, so that the guide rod assembly can import the threading strips into the push rod assembly one by one. The wheel axle is connected to the motor, and the rotation of the motor can drive the wheel axle to rotate, so that the partitions set on the wheel axle can guide the threading bars into the push rod assembly one by one; the width of the spacing between adjacent partitions is greater than the diameter of the threading bars, and the spacing can just guide only one threading bar into the push rod assembly.

[0008] Preferably, the guide wheel is in the shape of a neck flange, the guide wheel is sleeved with a guide wheel shaft, a guide wheel mounting groove with a rectangular cross section is provided at the bottom of the guide slope, the side of the guide wheel mounting groove is perpendicular to the guide slope, the guide wheel is embedded in the guide wheel mounting groove, the guide wheel shaft is fixed to the side of the guide wheel mounting groove, the guide wheel flange edge extends out of the guide slope and is perpendicular to the guide slope, and the guide wheel flange neck surface and flange end surface are both in contact with the penetration strip. The flange edge of the guide wheel can place the introduced penetration strip on the flange edge to play a supporting role. The guide wheel is sleeved on the guide wheel shaft, and the guide wheel can guide the penetration strip; the position setting of the guide wheel ensures that the center axis of the penetration strip entering the guide wheel flange surface coincides with the center axis of the expansion tube, ensuring that the penetration strip pushed out from the push rod assembly can accurately enter the expansion tube hole.

[0009] Preferably, the power wheel is a cylindrical wheel, the power wheel is fixedly connected to a power motor, the bottom of the fixed inclined plane is provided with a power wheel mounting groove, the power motor is fixedly connected to the bottom of the power wheel mounting groove, the power wheel axis is perpendicular to the horizontal, and the side elevation of the power wheel is in contact with the penetration bar. The side elevation of the power wheel is in contact with the penetration bar, and the power motor can drive the power wheel to rotate, and the penetration bar is moved toward the hole expansion mechanism through the friction between the power wheel and the penetration bar, ensuring that the penetration bar has sufficient inertia to pass through the expansion hole into the perforation of the blade to complete the perforation operation.

[0010] Preferably, the frame is provided with a transverse slide and a longitudinal slide, and the transverse slide and the longitudinal slide are perpendicular to each other. The transverse slide provides a transverse displacement guide for the hole expansion mechanism to ensure that the hole expansion mechanism can realize the hole expansion operation, and the longitudinal slide provides a longitudinal displacement of the bracket to control the bracket spacing to realize the perforation operation of the blades with holes of different spacings.

[0011] Preferably, the mounting block is a rectangular block, the outer side of the mounting block is provided with a clearance groove, the clearance groove is connected to a telescopic rod, the contraction block is embedded in the clearance groove and fixedly connected to the telescopic rod, a slider is provided at the bottom of the mounting block, a support block is slidably connected below the slider, the support block is a strip block, the upper surface of the support block is provided with a guide groove, the lower surface is provided with a guide plate, the slider is embedded in the guide groove, and the guide plate is embedded in the transverse slide groove. The telescopic block connected to the side of the mounting block cooperates with the telescopic rod fixed thereto to realize the telescopic action, when the mounting block moves to the blade clamping device, the contraction block contacts the two sides of the clamped blade, the contraction block contracts inward, the contraction block squeezes the two sides of the blade, so that the perforations of the blade are expanded; the slider provided at the bottom of the mounting block cooperates with the guide groove on the support block to control the spacing of the mounting block, so as to realize the hole expansion operation for blades with perforations of different spacings.

[0012] Preferably, the guide block is a strip block, which is embedded in the longitudinal slide groove and slidably connected to the longitudinal slide groove. The guide block drives the bracket to slide along the longitudinal slide groove, so that the spacing of the brackets can meet the perforation operation of blades of different sizes and widths.

[0013] Preferably, the reaming tube is a long straight tube, and the two ends of the reaming tube extend out of the mounting blocks. One end of the reaming tube faces the blade pressing mechanism, and the other end faces the threading strip pushing mechanism. The inner diameter of the reaming tube is larger than the threading strip diameter. The opening end of the exhaust hole is on the same side as the blade pressing mechanism. The opening end of the exhaust hole is closed. The exhaust holes are evenly arranged around the wall of the reaming tube. The outer wall of the reaming tube facing the threading strip pushing mechanism is provided with a connecting hole. One end of the connecting hole is connected to the exhaust hole, and the other end is connected to the external air path. The end of the reaming tube is arranged in a closed shape, which is conducive to the reaming tube to penetrate into the perforation of the louver blade; the inner diameter of the reaming tube is larger than the threading strip diameter, so that the threading strip can pass through the reaming tube smoothly, enter the perforation through the guiding effect of the reaming tube, and complete the threading operation; the exhaust holes are evenly arranged around the wall of the reaming tube, so that the high-pressure air blown out from the exhaust hole can be more uniform, and the force acting on the louver blade perforation can more effectively blow the perforation open, which is conducive to the insertion of the perforation tube into the perforation and increases the probability of perforation.

[0014] The beneficial effects of the present invention are as follows: the squeeze of the shrink block and the blown high-pressure gas work together to open the perforation of the blade, thereby increasing the success rate of hole expansion; the threading strip pushing mechanism does not require manual placement of the threading strip, and can achieve automatic operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of the present invention;

[0016] Figure 2 yes Figure 1 Sectional view at DD in the middle;

[0017] Figure 3 yes Figure 1 Sectional view at CC;

[0018] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0020] Figure 6 is a cross-sectional view of the expanded tube;

[0021] Figure 7 It is a three-dimensional diagram of the rack.

[0022] In the accompanying drawings, 1. frame, 10. transverse slide, 11. longitudinal slide;

[0023] 2. expansion mechanism, 20. mounting block, 21. expansion tube, 22. contraction block, 200. mounting hole, 201. clearance groove, 202. telescopic rod, 203. slider, 204. support block, 205. guide groove, 206. guide plate, 210. exhaust hole, 211. connection hole;

[0024] 3. Strip pushing mechanism, 30. Bracket, 31. Support plate, 32. Fixed inclined plane, 33. Guide inclined plane, 34. Guide rod assembly, 35. Push rod assembly, 36. Guide block, 310. Bending plate, 320. Power wheel mounting groove, 330. Guide wheel mounting groove, 340. Fixed frame, 341. Guide rod wheel, 342. Wheel axle, 343. Partition plate, 350. Power wheel, 351. Guide wheel, 352. Guide wheel axle, 353. Power motor;

[0025] 4. Blade pressing mechanism;

[0026] 5. Wear stripes. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Example

[0028] like Figure 1-7 As shown, a device for automatically advancing the strips of a venetian blind blade includes a frame 1 and a blade pressing mechanism 4. A hole-expanding mechanism 2 and a strip-expanding mechanism 3 are slidably connected to the upper surface of the frame 1. The hole-expanding mechanism 2 is placed on the left side of the strip-expanding mechanism 3. The blade pressing mechanism 4 is placed on the left side of the hole-expanding mechanism 2. The hole-expanding mechanism 2 is provided with a mounting block 20. The end surface of the mounting block 20 is provided with a mounting hole 200 that passes through the mounting block 20. The mounting hole 200 is sleeved with a hole-expanding tube 21. The wall of the hole-expanding tube 21 is provided with an exhaust hole 210. A contraction block 22 is connected to the outside of the mounting block 20. The contraction block 22 is on the same horizontal plane as the hole-expanding tube 21. The strip-expanding mechanism 3 is provided with a bracket 30. The cross section of the bracket 30 is V-shaped. A fixed inclined surface 32 and a guide inclined surface 33 are provided on the inner wall of the bracket 30. A support plate 31 is slidably connected to the top surface of the fixed inclined surface 32, and a guide block 36 is provided on the bottom surface. A plurality of strips 5 are provided on the support plate 31. The fixed inclined surface 32 is fixedly connected with a guide rod assembly 34. A push rod assembly 35 is arranged below the guide rod assembly 34. The push rod assembly 35 is provided with a power wheel 350 and a guide wheel 351. The side elevation of the power wheel 350 and the outer side surface of the guide wheel 351 form a U-shaped push rod groove. The central axis of the expansion tube 21 coincides with the central line of the push rod groove.

[0029] like Figure 3As shown, the support plate 31 is a strip plate. Bending plates 310 are provided on both sides of the support plate 3. The bending plates 310 are perpendicular to the guide slope 33. The side of the bending plate 310 and the guide slope 33 form a through hole. The width of the through hole is sufficient to allow only one threading strip to pass through. The guide rod assembly 34 includes a fixed frame 340 and a guide rod wheel 341. The fixed frame 340 is a strip plate. One end of the fixed frame 340 is fixed to the fixed slope 32, and the other end is rotatably connected to the guide rod wheel 341. The guide rod wheel 341 includes an axle 342 and a partition 343. The axle 342 is a cylinder. A motor is fixed to the end face of the axle 342. The partition 343 is fixed to the side surface of the axle 342. The partitions 343 are evenly arranged around the outer side of the axle 342. The spacing width of adjacent partitions 343 is greater than the diameter of the threading strip 5 and less than 2 times the diameter of the threading strip 5.

[0030] like Figure 4 As shown, the guide wheel 351 is in the shape of a flange with a neck. The guide wheel 351 is sleeved with a guide wheel shaft 352. A guide wheel mounting groove 330 with a rectangular cross section is provided at the bottom of the guide slope 33. The side of the guide wheel mounting groove 330 is perpendicular to the guide slope 33. The guide wheel 351 is embedded in the guide wheel mounting groove 330. The guide wheel shaft 352 is fixed to the side of the guide wheel mounting groove 330. The flange edge of the guide wheel 351 extends out of the guide slope 33 and is perpendicular to the guide slope 33. The side face and end face of the flange neck of the guide wheel 351 are both in contact with the wear bar 5.

[0031] like Figure 5 As shown, the power wheel 350 is a cylindrical wheel. The power wheel 350 is fixedly connected with a power motor 353. A power wheel mounting groove 320 is provided at the bottom of the fixed inclined plane 32. The power motor 353 is fixedly connected to the bottom of the power wheel mounting groove 320. The axis of the power wheel 350 is perpendicular to the horizontal. The side elevation of the power wheel 350 contacts the wear bar 5.

[0032] like Figure 7 As shown, the frame 1 is provided with a transverse slide groove 10 and a longitudinal slide groove 11, and the transverse slide groove 10 and the longitudinal slide groove 11 are perpendicular to each other.

[0033] like Figure 2 As shown, the mounting block 20 is a rectangular block. A clearance groove 201 is provided on the outer side of the mounting block 20. A telescopic rod 202 is connected to the clearance groove 201. The contraction block 22 is embedded in the clearance groove 201 and fixedly connected to the telescopic rod 202. A slider 203 is provided at the bottom of the mounting block 20. A support block 204 is slidably connected below the slider 203. The support block 204 is a strip block. A guide groove 205 is provided on the upper surface of the support block 204, and a guide plate 206 is provided on the lower surface. The slider 203 is embedded in the guide groove 205. The guide plate 206 is embedded in the horizontal slide groove 10.

[0034] like Figure 3 , 7 As shown, the guide block 36 is a bar block. The guide block 36 is embedded in the longitudinal slide groove 11 and is slidably connected to the longitudinal slide groove 11.

[0035] like Figure 6 As shown, the reaming tube 21 is a long straight tube. Both ends of the reaming tube 21 extend out of the mounting block 20. One end of the reaming tube 21 faces the blade pressing mechanism 4, and the other end faces the threading strip pushing mechanism 3. The inner diameter of the reaming tube 21 is larger than the diameter of the threading strip 5. The opening end of the exhaust hole 210 is on the same side as the blade pressing mechanism 4. The opening end of the exhaust hole 210 is closed. The exhaust holes 210 are evenly arranged around the wall of the reaming tube 21. A connecting hole 211 is provided on the outer wall of the reaming tube 21 facing the threading strip pushing mechanism 3. One end of the connecting hole 211 is connected to the exhaust hole 210, and the other end is connected to the external gas path.

[0036] The workflow of the present invention is:

[0037] When the blade to be threaded is a single-sided threaded blade, the threading pushing mechanism 3 only needs to be provided with one bracket 30 to complete the threading operation. When the blade to be threaded is a double-sided threaded blade, the threading pushing mechanism 3 is provided with two symmetrical brackets 30.

[0038] Start the device, such as Figure 1 , 2 As shown in FIG. 6 , the hole expansion mechanism 2 moves along the horizontal slide groove 10 of the frame 1 toward the blade pressing mechanism 4. The contraction block 22 contacts the blade, and the contraction block 22 contracts inward to squeeze the perforation of the blade, opening the perforation of the blade. At the same time, the exhaust hole 210 provided on the hole expansion tube 21 blows out high-pressure gas to further open the perforation of the blade. The hole expansion mechanism 2 continues to move toward the blade pressing mechanism 4, and the hole expansion tube 21 is inserted into the perforation of the blade to complete the hole expansion operation. Figure 1 , 3 As shown in 4 and 5, the threading strip 5 placed on the support plate 31 passes through the through hole formed by the support plate 31 and the guide inclined surface 33 on the bracket 30, and the threading strip 5 falls into the U-shaped push rod groove formed by the power wheel 350 and the guide wheel 351 in the push rod assembly 35 one by one through the conduction of the rotation of the guide rod assembly 34. The power wheel 350 and the guide wheel 351 cooperate to push the threading strip 5 toward the hole expansion mechanism 2, so that the threading strip 5 passes through the hole expansion tube 21 and enters the perforation of the blade, completing the blade threading operation. After the power wheel 350 pushes the threading strip 5 through the hole expansion mechanism 2 and completes the blade threading operation, the guide rod assembly 34 rotates to drop the next threading strip 5, and the push rod assembly 35 continues to push the next threading strip 5. The extrusion of the contraction block 22 and the high-pressure gas blown out of the exhaust hole 210 work together to better realize the hole expansion operation and improve the success rate of hole expansion; the threading strip pushing mechanism 3 does not need to manually place the threading strip, and can realize automatic operation.

Claims

1. An automatic propulsion device for the blades of a blind, characterized in that: The invention comprises a frame (1) and a blade pressing mechanism (4), wherein the upper surface of the frame (1) is slidably connected with a hole expansion mechanism (2) and a strip insertion pushing mechanism (3), the hole expansion mechanism (2) is arranged on the left side of the strip insertion pushing mechanism (3), the blade pressing mechanism (4) is arranged on the left side of the hole expansion mechanism (2), the hole expansion mechanism (2) is provided with a mounting block (20), the end surface of the mounting block (20) is provided with a mounting hole (200) penetrating the mounting block (20), the mounting hole (200) is sleeved with a hole expansion tube (21), the wall of the hole expansion tube (21) is provided with an exhaust hole (210), and the outer side of the mounting block (20) is connected with a The shrinking block (22) is arranged on the same horizontal plane as the expansion tube (21); the threading strip pushing mechanism (3) is provided with a bracket (30); the bracket (30) has a V-shaped cross section; the inner wall of the bracket (30) is provided with a fixed inclined surface (32) and a guide inclined surface (33); the upper top surface of the fixed inclined surface (32) is movably connected to a support plate (31); the lower bottom surface is provided with a guide block (36); a plurality of threading strips (5) are provided on the support plate (31); the fixed inclined surface (32) is fixedly connected to a guide rod assembly (34); a push rod assembly (35) is provided below the guide rod assembly (34); the push rod assembly (35) is provided with a power wheel (350) and a guide wheel (351), the side elevation of the power wheel (350) and the outer side surface of the guide wheel (351) form a U-shaped push rod groove, the central axis of the expansion tube (21) coincides with the central line of the push rod groove, the support plate (31) is a strip plate, and the two side surfaces of the support plate (31) are provided with bending plates (310), the bending plates (310) are perpendicular to the guide inclined surface (33), the side surface of the bending plate (310) and the guide inclined surface (33) form a through hole, and the width of the through hole is sufficient to allow only one threading strip (5) to pass through, and the guide rod assembly (34) includes a fixing frame (340) and a guide rod wheel (341), the fixing frame (340) being a strip plate, one end of the fixing frame (340) being fixed to the fixing inclined plane (32), and the other end being rotatably connected to the guide rod wheel (341), the guide rod wheel (341) comprising a wheel shaft (342) and a partition plate (343), the wheel shaft (342) being a cylinder, the end surface of the wheel shaft (342) being fixedly connected to a motor, the partition plate (343) being fixedly connected to a side surface of the wheel shaft (342), the partition plates (343) being evenly arranged around the outer side surface of the wheel shaft (342), and the interval width between adjacent partition plates (343) being greater than the diameter of the threading strip (5) and less than twice the diameter of the threading strip (5).

2. The automatic propulsion device for the blinds according to claim 1 is characterized in that: The guide wheel (351) is in the shape of a flange with a neck. The guide wheel (351) is sleeved with a guide wheel shaft (352). A guide wheel mounting groove (330) with a rectangular cross section is provided at the bottom of the guide inclined surface (33). The side surface of the guide wheel mounting groove (330) is perpendicular to the guide inclined surface (33). The guide wheel (351) is embedded in the guide wheel mounting groove (330). The guide wheel shaft (352) is fixed to the side surface of the guide wheel mounting groove (330). The flange edge of the guide wheel (351) extends out of the guide inclined surface (33) and is perpendicular to the guide inclined surface (33). The flange neck side surface and flange end surface of the guide wheel (351) are both in contact with the threading strip (5).

3. The automatic propulsion device for threading the blades of a Venetian blind according to claim 1 is characterized in that: The power wheel (350) is a cylindrical wheel, the power wheel (350) is fixedly connected to a power motor (353), a power wheel mounting groove (320) is provided at the bottom of the fixed inclined surface (32), the power motor (353) is fixedly connected to the bottom of the power wheel mounting groove (320), the axis of the power wheel (350) is perpendicular to the horizontal, and the side elevation of the power wheel (350) is in contact with the penetration bar (5).

4. The automatic advancing device for threading the blades of a Venetian blind according to claim 1 is characterized in that: The frame (1) is provided with a transverse slide groove (10) and a longitudinal slide groove (11), and the transverse slide groove (10) and the longitudinal slide groove (11) are perpendicular to each other.

5. The automatic advancing device for threading the blades of a Venetian blind according to claim 4 is characterized in that: The mounting block (20) is a rectangular block. The outer side surface of the mounting block (20) is provided with a clearance groove (201). The clearance groove (201) is connected to a telescopic rod (202). The contraction block (22) is embedded in the clearance groove (201) and is fixedly connected to the telescopic rod (202). A slider (203) is provided at the bottom of the mounting block (20). A support block (204) is slidably connected below the slider (203). The support block (204) is a strip block. A guide groove (205) is provided on the upper surface of the support block (204), and a guide plate (206) is provided on the lower surface. The slider (203) is embedded in the guide groove (205), and the guide plate (206) is embedded in the transverse slide groove (10).

6. The automatic advancing device for threading the blades of a Venetian blind according to claim 4 is characterized in that: The guide block (36) is a bar-shaped block, and the guide block (36) is embedded in the longitudinal slide groove (11) and is slidably connected to the longitudinal slide groove (11).

7. The automatic advancing device for threading the blades of a Venetian blind according to claim 5 is characterized in that: The reaming tube (21) is a long straight tube. Both ends of the reaming tube (21) extend out of the mounting block (20). One end of the reaming tube (21) faces the blade pressing mechanism (4), and the other end faces the threading strip pushing mechanism (3). The inner diameter of the reaming tube (21) is larger than the diameter of the threading strip (5). The opening end of the exhaust hole (210) is on the same side as the blade pressing mechanism (4). The opening end of the exhaust hole (210) is closed. The exhaust holes (210) are evenly arranged around the wall of the reaming tube (21). A connecting hole (211) is provided on the outer wall of the reaming tube (21) on the side facing the threading strip pushing mechanism (3). One end of the connecting hole (211) is connected to the exhaust hole (210), and the other end is connected to an external gas path.

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