A fully automatic hot-melt assembly machine for stool legs

Abstract

The present invention relates to the technical field of stool leg processing, and in particular to a fully automatic hot-melt assembly machine for stool legs. The machine comprises a feeding device 1, a feeding device 2, a conveying mechanism 1, a conveying mechanism 2, a multi-station shifting mechanism, and a hot-melt mechanism, which are respectively arranged on a frame; the plastic base conveyed by the feeding device 1 is conveyed to the plastic base loading station of the multi-station shifting mechanism by the conveying mechanism 1, and the felt conveyed by the feeding device 2 is conveyed to the felt bonding and pressing station of the multi-station shifting mechanism by the conveying mechanism 2; the hot-melt mechanism is used to hot-melt the plastic base at the plastic base hot-melt station of the multi-station shifting mechanism. The assembly process of the present invention is fully automatic, saving a lot of manpower. A single person can look after multiple devices. The machine has high positioning accuracy and good finished product assembly consistency, which can reduce production costs.

Description

Technical Field

[0001] The invention relates to the technical field of stool leg processing, in particular to a full-automatic hot-melt assembly machine for stool legs. Background Art

[0002] Stool legs on the market can be made by hot-melting and pressing a plastic base and felt together. However, the hot-melting assembly of such stool legs is currently done manually, using simple positioning tools and heaters to heat-seal the two parts together. This is inefficient, has low assembly precision, and high labor costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a fully automatic hot-melt assembly machine for stool legs. The assembly process of the present invention is completed fully automatically, saving a lot of manpower. A single person can look after multiple devices. The positioning accuracy is high, the finished product assembly consistency is good, and the production cost can be reduced.

[0004] In order to solve the above technical problems, the present invention provides a fully automatic hot-melt assembly machine for stool legs, comprising a feeding device 1, a feeding device 2, a conveying mechanism 1, a conveying mechanism 2, a multi-station shifting mechanism and a hot-melt mechanism respectively arranged on a frame; the plastic base conveyed by the feeding device 1 is conveyed to the plastic base loading station of the multi-station shifting mechanism by the conveying mechanism 1, and the felt conveyed by the feeding device 2 is conveyed to the felt bonding and pressing station of the multi-station shifting mechanism by the conveying mechanism 2; the hot-melt mechanism is used to hot-melt the plastic base at the plastic base hot-melt station of the multi-station shifting mechanism, and the multi-station shifting mechanism synchronously transfers the plastic base at the plastic base loading station to the plastic base hot-melt station, transfers the plastic base at the plastic base hot-melt station to the felt bonding and pressing station, and transfers the finished product at the felt bonding and pressing station to the unloading channel;

[0005] The multi-station shifting mechanism includes: a U-shaped seat, a station platform, a splint, a shift cylinder, a two-way cylinder, a guide rail and a slider; the U-shaped seat is provided with the guide rail, and the slider is slidably connected to the guide rail, the shift cylinder is installed on the left side wall of the U-shaped seat, the driving end of the shift cylinder is connected to the slider, the top of the slider is provided with the two-way cylinder, the front and rear driving ends of the two-way cylinder are provided with the splint, the top of the U-shaped seat is provided with the station platform, the top of the station platform is abutted with the splints distributed front and back, and three V-shaped grooves are equidistantly provided at the inner ends of the splints on the front and rear sides.

[0006] Preferably, the feeding device 1 and the feeding device 2 both comprise: a vibration plate, a straight vibration track, a straight vibrator, a height adjustment mechanism, and a staggered positioning mechanism; the discharge end of the vibration plate is connected to the feed end of the straight vibration track, the bottom of the straight vibration track is connected to the output end of the straight vibrator, and the straight vibrator is installed on the height adjustment mechanism;

[0007] The height adjustment mechanism includes: a support base, an adjusting screw, an adjusting nut and a lifting plate; the adjusting screws are vertically passed through the four corners of the top of the support base and the lifting plate, and four adjusting nuts are vertically threaded and locked on each adjusting screw, and are respectively pressed against the top plate of the support base and the upper and lower surfaces of the lifting plate, and the top of the lifting plate is provided with the straight vibrator;

[0008] The staggered positioning mechanism includes: a support frame, a pushing cylinder, a pushing plate and a staggered plate; the staggered plate is provided on the top of the support frame, the pushing cylinder is provided at one end of the staggered plate, the pushing plate is provided at the driving end of the pushing cylinder, an L-shaped slot is provided at the other end of the staggered plate, and the top of the L-shaped slot also includes a covering limit plate, and the position of the limit plate corresponds to the discharge end of the straight vibration track.

[0009] Preferably, the first and second transport mechanisms each include: a mounting frame, a transport cylinder, an I-shaped guide rail, and a lifting cylinder; the I-shaped guide rail is provided on the side wall of the mounting frame, the lifting cylinder is slidably mounted on the I-shaped guide rail, and the driving end of the transport cylinder is connected to the mounting plate of the lifting cylinder;

[0010] In the case of the transport mechanism 1, the transport mechanism 1 further comprises a vacuum suction cup, the driving end of the lifting cylinder is equipped with the vacuum suction cup, and the vacuum suction cup is used to absorb the plastic base at the L-shaped slot;

[0011] When it is the second conveying mechanism, the second conveying mechanism also includes a mounting plate, an ejection cylinder and a material taking barrel; the driving end of the lifting cylinder is provided with the mounting plate, the material taking barrel is vertically plugged into the mounting plate, and the ejection cylinder is also installed above the material taking barrel, and the driving shaft end of the ejection cylinder is movably inserted into the material taking hole of the material taking barrel.

[0012] Preferably, the second transport mechanism further includes a push-in cylinder, which is installed at the bottom of the staggered plate, and the drive shaft end of the push-in cylinder is located in a slot, which is opened at the bottom of the inner cavity of the L-shaped slot.

[0013] Preferably, the top and bottom of the material taking barrel are opened in a through-connecting structure, a plurality of thin vertical ribs are provided on the inner wall of the material taking barrel in a circumferential direction, and the bottom of the thin vertical ribs is connected to the inner wall of the material taking barrel in an arc-shaped transition; the radial length of the thin vertical ribs is 2-10 mm.

[0014] Preferably, the hot melt mechanism includes: a frame, a downward pressure cylinder, a guide sleeve, a guide rod, a downward pressure plate, a spring pin and a hot melt head; the downward pressure cylinder is installed on the top of the frame, the driving end of the downward pressure cylinder is provided with the downward pressure plate, the left and right ends of the top of the downward pressure plate are provided with the guide rods, the guide sleeve is movably sleeved on the guide rod, the guide sleeve is inserted into the frame, and the bottom of the lower pressure plate is provided with the hot melt head.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the setting of the multi-station shifting mechanism, the plastic base at the plastic base loading station is synchronously transferred to the plastic base hot melting station, the plastic base at the plastic base hot melting station is transferred to the felt bonding and pressing station, and the finished product at the felt bonding and pressing station is transferred to the unloading channel, thereby improving the handling and shifting efficiency.

[0017] 2. Through the setting of the above-mentioned height adjustment mechanism, the adjusting nuts on the upper and lower sides can be rotated to achieve the purpose of adjusting the height of the direct vibration track and ensure the smooth connection between the direct vibration track and the vibration plate.

[0018] 3. Through the setting of the staggered positioning mechanism, it is convenient to push the plastic base or felt transported to the staggered plate through the straight vibration plate to the L-shaped slot, so as to achieve the purpose of orderly loading on the straight vibration track, and to facilitate waiting for the transport mechanism 1 or the transport mechanism 2 to perform the transport action.

[0019] 4. Through the setting of the second transporting mechanism, not only can the felt be transported, but also the pressing action between the felt and the plastic base can be completed. In addition, the design of evenly distributed fine vertical ribs is adopted. The concave space next to the fine vertical ribs can accommodate more felt parts that are squeezed and deformed after entering the cylinder. Therefore, even larger-sized felt can be easily put into the cylinder, and the success rate of material retrieval is 100%.

[0020] 5. The assembly process of the present invention is completed fully automatically, saving a lot of manpower. A single person can look after multiple devices. The positioning accuracy is high, the finished product assembly consistency is good, and the production cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front structural diagram of the present invention.

[0022] Figure 2 It is a rear structural diagram of the present invention.

[0023] Figure 3 It is the structural diagram of the height adjustment mechanism of the present invention.

[0024] Figure 4 This is a structural diagram of the transport mechanism of the present invention.

[0025] Figure 5 This is a structural diagram of the second transport mechanism of the present invention.

[0026] Figure 6 It is a cross-sectional structural diagram of the material taking barrel of the present invention.

[0027] Figure 7 It is a structural diagram of the hot melt mechanism of the present invention.

[0028] Figure 8 The multi-station shift mechanism structure of the present invention Figure 1 .

[0029] Figure 9 The multi-station shift mechanism structure of the present invention Figure 2 .

[0030] In the figure: 1-feeding device 1, 2-feeding device 2, 21-vibrating plate, 22-straight vibration track, 23-straight vibrator, 24-height adjustment mechanism, 241-support seat, 242-adjusting screw, 243-adjusting nut, 244-lifting plate, 25-staggered positioning mechanism, 251-support frame, 252-pushing cylinder, 253-pushing plate, 254-staggered plate, 255-L-shaped slot, 256-limiting plate, 3-conveying mechanism 1, 4-conveying mechanism 2, 41-mounting frame, 42-conveying cylinder, 43-type guide rail, 4 4-lifting cylinder, 45-vacuum suction cup, 46-mounting plate, 47-ejection cylinder, 48-feeding barrel, 49-fine vertical ribs, 50-ejection cylinder, 5-multi-station shifting mechanism, 51-U-shaped seat, 52-station platform, 53-clamping plate, 54-shifting cylinder, 55-bidirectional cylinder, 56-guide rail, 57-slider, 58-V-shaped slot, 6-hot melt mechanism, 61-frame, 62-downward pressure cylinder, 63-guide sleeve, 64-guide rod, 65-downward pressure plate, 66-spring pin, 67-hot melt head, 7-feeding channel. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are only used to facilitate and clearly illustrate the embodiments of the present invention.

[0032] like Figure 1-9As shown, the embodiment of the present invention specifically provides a fully automatic hot-melt assembly machine for stool legs, including a feeding device 1, a feeding device 2, a conveying mechanism 1 3, a conveying mechanism 2 4, a multi-station shifting mechanism 5 and a hot-melt mechanism 6 respectively arranged on a frame; the plastic base conveyed by the feeding device 1 is conveyed to the plastic base loading station of the multi-station shifting mechanism 5 by the conveying mechanism 1 3, and the felt conveyed by the feeding device 2 2 is conveyed to the felt bonding and pressing station of the multi-station shifting mechanism 5 by the conveying mechanism 2 4; the hot-melt mechanism 6 is used to hot-melt the plastic base at the plastic base hot-melt station of the multi-station shifting mechanism 5, and the multi-station shifting mechanism 5 synchronously transfers the plastic base at the plastic base loading station to the plastic base hot-melt station, transfers the plastic base at the plastic base hot-melt station to the felt bonding and pressing station, and transfers the finished product at the felt bonding and pressing station to the unloading channel 7;

[0033] like Figure 8 and Figure 9 As shown, the multi-station shifting mechanism 5 includes: a U-shaped seat 51, a station platform 52, a splint 53, a shift cylinder 54, a two-way cylinder 55, a guide rail 56 and a slider 57; a guide rail 56 is provided on the U-shaped seat 51, and a slider 57 is slidably connected to the guide rail 56, a shift cylinder 54 is installed on the left side wall of the U-shaped seat 51, the driving end of the shift cylinder 54 is connected to the slider 57, the top of the slider 57 is provided with a two-way cylinder 55, and the front and rear driving ends of the two-way cylinder 55 are provided with splints 53, the top of the U-shaped seat 51 is provided with a station platform 52, the top of the station platform 52 is abutted with splints 53 distributed front and back, and three V-shaped grooves 58 are equidistantly provided at the inner ends of the front and rear splints 53. When the above-mentioned multi-station shifting mechanism 5 is in use, the driving end of the two-way cylinder 55 can be controlled to shorten, driving the front and rear side clamps 53 to approach each other, and the V-shaped groove 58 is used to synchronously clamp the plastic base, the plastic base after hot melting and the plastic base-felt finished product placed on the station platform 52. Then, the driving end of the shifting cylinder 54 can be controlled to extend, driving the slider 57 and the device thereon to move under the guidance of the guide rail 56, and synchronously transferring the plastic base at the plastic base loading station to the plastic base hot melting station, transferring the plastic base at the plastic base hot melting station to the felt bonding and pressing station, and transferring the finished product at the felt bonding and pressing station to the unloading channel 7, thereby improving the handling and shifting efficiency.

[0034] like Figure 1-3As shown, the feeding device 1 and the feeding device 2 both include: a vibration plate 21, a straight vibration track 22, a straight vibrator 23, a height adjustment mechanism 24 and a staggered positioning mechanism 25; the discharge end of the vibration plate 21 is connected to the feed end of the straight vibration track 22, the bottom of the straight vibration track 22 is connected to the output end of the straight vibrator 23, and the straight vibrator 23 is installed on the height adjustment mechanism 24; the height adjustment mechanism 24 includes: a support seat 241, an adjusting screw 242, an adjusting nut 243 and a lifting plate 244; the support seat 241 and the lifting plate 244 are connected. Adjusting screws 242 are vertically passed through the four corners of the top, and each adjusting screw 242 is vertically threaded with four adjusting nuts 243, which are respectively pressed against the top plate of the support seat 241 and the upper and lower surfaces of the lifting plate 244. A straight vibrator 23 is provided on the top of the lifting plate 244; through the setting of the above-mentioned height adjustment mechanism 24, the adjusting nuts 243 on the upper and lower sides can be rotated, so as to achieve the purpose of adjusting the height of the straight vibration track 22, and ensure the smoothness of the straight vibration track 22 and the vibration plate 21 when docking.

[0035] like Figure 4 and Figure 5 As shown, the staggered positioning mechanism 25 includes: a support frame 251, a pushing cylinder 252, a pushing plate 253, and a staggered plate 254; the staggered plate 254 is provided on the top of the support frame 251, and the pushing cylinder 252 is provided at one end of the staggered plate 254. The driving end of the pushing cylinder 252 is provided with a pushing plate 253, and the other end of the staggered plate 254 is provided with an L-shaped slot 255. The top of the L-shaped slot 255 also includes a limiting plate 256 covering it. The position of the limiting plate 256 corresponds to the discharge end of the straight vibration track 22. By controlling the driving end of the pushing cylinder 252 to extend, the plastic base or felt transported to the staggered plate 254 by the straight vibration plate is pushed to the L-shaped slot 255, thereby achieving the purpose of orderly loading on the straight vibration track 22, facilitating the waiting time for the transport mechanism 1 3 or the transport mechanism 2 4 to perform the transport action.

[0036] like Figure 4-5 As shown, both the transport mechanism 1 3 and the transport mechanism 2 4 include: a mounting frame 41, a transport cylinder 42, an I-shaped guide rail 43, and a lifting cylinder 44; the I-shaped guide rail 43 is provided on the side wall of the mounting frame 41, and the lifting cylinder 44 is slidably mounted on the I-shaped guide rail 43, and the driving end of the transport cylinder 42 is connected to the mounting plate 46 of the lifting cylinder 44;

[0037] like Figure 4As shown, when it is a conveying mechanism 3, the conveying mechanism 3 also includes a vacuum suction cup 45, and the driving end of the lifting cylinder 44 is equipped with a vacuum suction cup 45, and the vacuum suction cup 45 is used to absorb the plastic base at the L-shaped slot 255; when the conveying mechanism 3 is working, the driving end of the conveying cylinder 42 extends and moves, driving the vacuum suction cup 45 to move laterally, and can reciprocate between the L-shaped slot 255 of the plastic base and the plastic base loading station. The driving end of the lifting cylinder 44 extends to drive the vacuum suction cup 45 to move downward to absorb the plastic base, thereby completing the conveying action of the plastic base.

[0038] like Figure 5 As shown, in the case of transport mechanism 2 4 , transport mechanism 2 4 also includes a mounting plate 46 , an ejection cylinder 47 , and a material extraction barrel 48 . The driving end of lift cylinder 44 is provided with a mounting plate 46 , onto which a material extraction barrel 48 is vertically inserted. An ejection cylinder 47 is also installed above material extraction barrel 48 , and the drive shaft end of ejection cylinder 47 is movably inserted into the material extraction hole of material extraction barrel 48 . Transport mechanism 2 4 also includes an insertion cylinder 50 , which is mounted on the bottom of staggered plate 254 , and the drive shaft end of ejection cylinder 50 is located in a slot provided in the bottom of the inner cavity of L-shaped slot 255 . Through the extension action of the pushing cylinder 252, the pushing plate 253 moves to push the felt into the L-shaped slot 255. After the detection sensor senses that the felt is in place [detection sensors are installed on the two side walls of the L-shaped slot 255, and the probe detection end of the detection sensor is located in the detection hole opened on the side wall of the L-shaped slot 255], the transporting cylinder 42 moves the material taking barrel 48 to the coaxial center of the drive shaft end of the ejection cylinder 47, the lifting cylinder 44 drives the material taking barrel 48 to descend, and the ejection cylinder 50 drives its drive shaft end to rise to push the felt into the material taking barrel 48, the lifting cylinder 44 drives the material taking barrel 48 to rise, the transporting cylinder 42 moves the material taking barrel 48 to the felt release position, the lifting cylinder 44 drives the material taking barrel 48 to descend, and the ejection cylinder 47 pushes the felt out of the material taking barrel 48 and presses it on another workpiece, that is, pressing the felt on the plastic base after hot melting, completing one material taking and releasing.

[0039] like Figure 6As shown, the top and bottom of the material dispensing barrel 48 are connected in a through-connected structure. Several fine vertical ribs 49 are provided circumferentially on the inner wall of the material dispensing barrel 48, and the bottom of the fine vertical ribs 49 forms an arc-shaped transition connection with the inner wall of the material dispensing barrel 48. The radial length of the fine vertical ribs 49 is 2-10mm. The design of evenly distributed fine vertical ribs 49 allows the recessed space next to the fine vertical ribs 49 to accommodate more of the felt that is squeezed and deformed after entering the barrel. Therefore, even larger felts can be easily inserted into the barrel, and the material dispensing success rate is 100%. The bottom of the fine vertical ribs 49 forms an arc-shaped transition connection with the inner wall of the material dispensing barrel 48, ensuring that when the external felt push-in cylinder 50 pushes the cylindrical felt into the material dispensing barrel 48, it is guided by the arc-shaped transition and can enter smoothly, steadily and quickly.

[0040] like Figure 7 As shown, the hot melt mechanism 6 includes: a frame 61, a downward pressure cylinder 62, a guide sleeve 63, a guide rod 64, a downward pressure plate 65, a spring pin 66 and a hot melt head 67; a downward pressure cylinder 62 is installed on the top of the frame 61, and a downward pressure plate 65 is provided at the driving end of the downward pressure cylinder 62. Guide rods 64 are provided at the left and right ends of the top of the downward pressure plate 65. A guide sleeve 63 is movably sleeved on the guide rod 64. The guide sleeve 63 is inserted into the frame 61. A hot melt head 67 is provided at the bottom of the downward pressure plate 65. The bottom of the hot melt head 67 adopts a plurality of micro-protrusions connected by integral molding. When the hot melt mechanism 6 is in operation, the downward pressure cylinder 62 is controlled to extend, driving the downward pressure plate 65 and the hot melt head 67 to move downward to contact the top of the plastic base. The heat from the hot melt head 67 is used to uniformly and locally hot melt the top of the plastic base, facilitating the subsequent pressing and bonding of the felt to the plastic base, thereby avoiding the phenomenon of comprehensive hot melting on the top surface of the plastic base, which would completely destroy the structure of the top surface and cause changes in the overall structure of the plastic base. The present invention can ensure both the stability of the pressing and bonding and the stability of the overall structure of the plastic base by only using scattered local hot melting. In addition, the provision of the guide sleeve 63 and the guide rod 64 facilitates improving the accuracy of the vertical downward movement of the hot melt head 67. The provision of the spring pin 66 can produce an elastic buffering effect when the hot melt head 67 contacts the plastic base, preventing the excessive downward force on the hot melt head 67 from damaging the plastic base.

[0041] The following process is also included: After the equipment is started, the plastic base vibrating plate 21, plastic base direct vibration track 22, felt vibrating plate 21, and felt direct vibration track 22 automatically arrange the two parts to be assembled in order and send them to the plastic base staggered positioning mechanism 25 and the felt staggered positioning mechanism 25 infeed, respectively, for use in subsequent processes. The push cylinder 252 of the plastic base staggered positioning mechanism 25 actuates to push the plastic base to the mechanism's L-shaped slot 255. After the sensor senses the material, the plastic base transport mechanism 3 picks up the plastic base and sends it to the workstation platform 52 of the multi-station shifting mechanism 5. The multi-station shifting mechanism 5 has the following functions: synchronously transfers the plastic base at the plastic base loading station to the plastic base hot melt station, transfers the plastic base at the plastic base hot melt station to the felt bonding and pressing station, and transfers the finished product at the felt bonding and pressing station to the unloading channel 7. After each shifting action is completed, the transport mechanism 1 3, the hot melt mechanism 6 and the transport mechanism 2 4 will respectively complete the loading of the plastic base, the hot melting of the partial plastic base, the bonding and pressing of the felt at the same time, and the finished product unloading action will run back and forth in this way.

[0042] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A fully automatic hot melt assembly machine for stool legs, characterized in that: The invention comprises a feeding device 1 (1), a feeding device 2 (2), a conveying mechanism 1 (3), a conveying mechanism 2 (4), a multi-station shifting mechanism (5) and a hot-melt mechanism (6) which are respectively arranged on a frame; the plastic base conveyed by the feeding device 1 (1) is conveyed to the plastic base loading station of the multi-station shifting mechanism (5) by the conveying mechanism 1 (3); the felt conveyed by the feeding device 2 (2) is conveyed to the felt bonding and pressing station of the multi-station shifting mechanism (5) by the conveying mechanism 2 (4); the hot-melt mechanism (6) is used to hot-melt the plastic base at the plastic base hot-melt station of the multi-station shifting mechanism (5); the multi-station shifting mechanism (5) synchronously transfers the plastic base at the plastic base loading station to the plastic base hot-melt station, transfers the plastic base at the plastic base hot-melt station to the felt bonding and pressing station, and transfers the finished product at the felt bonding and pressing station to the unloading channel (7); The multi-station shifting mechanism (5) comprises: a U-shaped seat (51), a station platform (52), a clamping plate (53), a shifting cylinder (54), a bidirectional cylinder (55), a guide rail (56) and a slider (57); the guide rail (56) is provided on the U-shaped seat (51), the slider (57) is slidably connected to the guide rail (56), the shifting cylinder (54) is installed on the left side wall of the U-shaped seat (51), and the shifting cylinder (54) is provided on the left side wall of the U-shaped seat (51). The driving end is connected to the slider (57), the top of the slider (57) is provided with the bidirectional cylinder (55), the front and rear driving ends of the bidirectional cylinder (55) are provided with the clamping plate (53), the top of the U-shaped seat (51) is provided with the work station platform (52), the top of the work station platform (52) is in contact with the clamping plates (53) distributed front and back, and three V-shaped grooves (58) are equidistantly provided on the inner ends of the clamping plates (53) on the front and rear sides.

2. The fully automatic hot-melt assembly machine for stool legs according to claim 1, characterized in that: The feeding device 1 (1) and the feeding device 2 (2) both comprise: a vibration plate (21), a straight vibration track (22), a straight vibrator (23), a height adjustment mechanism (24) and a staggered positioning mechanism (25); the discharge end of the vibration plate (21) is connected to the feed end of the straight vibration track (22), the bottom of the straight vibration track (22) is connected to the output end of the straight vibrator (23), and the straight vibrator (23) is installed on the height adjustment mechanism (24); The height adjustment mechanism (24) comprises: a support seat (241), an adjusting screw (242), an adjusting nut (243) and a lifting plate (244); the adjusting screws (242) are vertically passed through the four corners of the top of the support seat (241) and the lifting plate (244); four adjusting nuts (243) are vertically threaded and locked on each adjusting screw (242), and are respectively pressed against the top plate of the support seat (241) and the upper and lower surfaces of the lifting plate (244); the top of the lifting plate (244) is provided with the straight vibrator (23); The staggered positioning mechanism (25) comprises: a support frame (251), a pushing cylinder (252), a pushing plate (253) and a staggered plate (254); the staggered plate (254) is provided on the top of the support frame (251), the pushing cylinder (252) is provided on one end of the staggered plate (254), the pushing cylinder (252) is provided on the driving end of the pushing cylinder (252), the pushing plate (253) is provided on the other end of the staggered plate (254), an L-shaped slot (255) is provided, and the top of the L-shaped slot (255) further comprises a covering limit plate (256), and the position of the limit plate (256) corresponds to the discharge end of the straight vibration track (22).

3. The fully automatic hot-melt assembly machine for stool legs according to claim 2, characterized in that: The transport mechanism (3) comprises: a mounting frame (41), a transport cylinder (42), an I-shaped guide rail (43), a lifting cylinder (44) and a vacuum suction cup (45); the I-shaped guide rail (43) is provided on the side wall of the mounting frame (41), the lifting cylinder (44) is slidably mounted on the I-shaped guide rail (43), the driving end of the transport cylinder (42) is connected to the mounting plate (46) of the lifting cylinder (44); the driving end of the lifting cylinder (44) is installed with the vacuum suction cup (45), and the vacuum suction cup (45) is used to adsorb the plastic base at the L-shaped slot (255); The second transport mechanism (4) comprises: a mounting frame (41), a transport cylinder (42), an I-shaped guide rail (43), a lifting cylinder (44), a mounting plate (46), an ejection cylinder (47) and a material taking barrel (48); the I-shaped guide rail (43) is provided on the side wall of the mounting frame (41), the lifting cylinder (44) is slidably mounted on the I-shaped guide rail (43), the driving end of the transport cylinder (42) is connected to the mounting plate (46) of the lifting cylinder (44); the driving end of the lifting cylinder (44) is provided with the mounting plate (46), the material taking barrel (48) is vertically plugged into the mounting plate (46), and the ejection cylinder (47) is also installed above the material taking barrel (48), and the driving shaft end of the ejection cylinder (47) is movably inserted into the material taking hole of the material taking barrel (48).

4. The fully automatic hot-melt assembly machine for stool legs according to claim 3, characterized in that: The second transport mechanism (4) further includes a push-in cylinder (50), which is installed at the bottom of the staggered plate (254), and the drive shaft end of the push-in cylinder (50) is located in a slot, which is opened at the bottom of the inner cavity of the L-shaped slot (255).

5. The fully automatic hot-melt assembly machine for stool legs according to claim 3, characterized in that: The top and bottom of the material taking barrel (48) are in a through-connected structure. A plurality of thin vertical ribs (49) are provided on the inner wall of the material taking barrel (48) in a circumferential direction. The bottom of the thin vertical ribs (49) is connected to the inner wall of the material taking barrel (48) in an arc-shaped transition. The radial length of the thin vertical ribs (49) is 2-10 mm.

6. The fully automatic hot-melt assembly machine for stool legs according to claim 3, characterized in that: The hot melt mechanism (6) includes: a frame (61), a downward pressure cylinder (62), a guide sleeve (63), a guide rod (64), a downward pressure plate (65), a spring pin (66) and a hot melt head (67); the downward pressure cylinder (62) is installed on the top of the frame (61), the driving end of the downward pressure cylinder (62) is provided with the downward pressure plate (65), the left and right ends of the top of the downward pressure plate (65) are provided with the guide rods (64), the guide sleeve (63) is movably sleeved on the guide rod (64), the guide sleeve (63) is plugged into the frame (61), and the bottom of the downward pressure plate (65) is provided with the hot melt head (67).

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