A kind of ultrasonic hot melting equipment for plastic

Abstract

The present invention discloses a lower plastic ultrasonic hot-melting device, which relates to the technical field of lithium battery accessories, including a welding body, a clamping mechanism and a discharging mechanism. The welding body includes a mounting platform, a mounting plate, a mounting frame, a transducer and an ultrasonic pressure block. The mounting plate is horizontally mounted on the upper side of the mounting platform; the clamping mechanism is arranged above the mounting platform and includes a positioning plate, a clamping plate and a double-axis cylinder. The top cover sheet is positioned on the upper side of the positioning plate through the positioning groove on the positioning plate, and the clamping plate is driven to translate inward by the double-axis cylinder and the lower plastic is clamped on the top of the top cover sheet; the discharging mechanism is arranged above the mounting platform and includes a hydraulic cylinder 1, a hydraulic cylinder 2 and a discharging block. The hydraulic cylinder 1 and the hydraulic cylinder 2 drive the discharging block to flip backward and unload the assembled lower plastic and the top cover sheet from the positioning groove. The present invention has the characteristics of reasonable scheme, compact structure and convenient use, which can not only avoid the placement and assembly errors between the lower plastic and the top cover sheet, but also improve the loading and unloading efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery accessories, and in particular to a lower plastic ultrasonic hot-melting device. Background Art

[0002] The company's business scope includes battery manufacturing, and its specific product is the lithium battery top cover assembly. This product consists of two parts: the lower plastic and the top cover sheet. Ultrasonic hot melting is used to melt the positioning pins on the lower plastic into the positioning holes on the top cover sheet to fix the lower plastic to the top cover sheet.

[0003] At present, when workers place the top cover sheet and the lower plastic on the fixture in sequence, it is very easy for the top cover sheet and the lower plastic to be placed upside down because the product itself does not have an anti-reverse structure. Once placed upside down and connected together, unqualified top cover assembly products will be produced, causing increased cost investment for the company. In addition, the assembled top cover sheet and lower plastic need to be removed from the fixture by workers, and then the top cover sheet and lower plastic that need to be assembled are placed on the fixture in sequence, which, to a certain extent, causes low production efficiency for the company. Summary of the invention

[0004] The object of the present invention is to provide a lower plastic ultrasonic hot-melting device to solve the above-mentioned defects caused by the prior art.

[0005] A plastic ultrasonic hot melting device includes a welding body, a clamping mechanism and a discharging mechanism, wherein:

[0006] The welding body includes a mounting platform, a mounting plate, a mounting frame, a transducer and an ultrasonic pressure block. The mounting plate is horizontally mounted on the upper side of the mounting platform. A control box is welded on the front side of the mounting platform. Start and stop switches are symmetrically mounted on the left and right sides of the control box. An emergency stop switch is installed in the center of the front side of the control box. The mounting frame is The transducer is vertically connected to the top of the mounting frame, and the ultrasonic pressure block is vertically connected to the bottom of the transducer;

[0007] The clamping mechanism is arranged above the mounting platform and includes a positioning plate, a clamping plate and a double-axis cylinder. The top cover sheet is positioned on the upper side of the positioning plate through the positioning groove on the positioning plate, and the clamping plate is driven by the double-axis cylinder to translate inward and clamp the lower plastic on the top of the top cover sheet;

[0008] The unloading mechanism is arranged above the mounting platform and comprises hydraulic cylinder 1, hydraulic cylinder 2 and an unloading block. The unloading block is driven by hydraulic cylinder 1 and hydraulic cylinder 2 to flip backward and unload the assembled lower plastic and top cover sheet from the positioning groove.

[0009] Preferably, the clamping mechanism further comprises a bottom mounting plate, the bottom mounting plate is horizontally attached to the upper side of the mounting plate, fixing plates are placed on both the front and rear sides of the bottom mounting plate, and the fixing plates are connected to the mounting plate through a pair of fixing nails, the positioning plate is horizontally connected to the top of the bottom mounting plate through a plurality of connecting columns, a positioning groove is centrally provided on the upper side of the positioning plate, and three avoidance grooves are spaced apart at the bottom of the positioning groove, a detection hole is eccentrically provided at the bottom of the positioning groove, and an L-shaped photoelectric switch is inserted in the detection hole, and a photoelectric switch of a counter-beam type is connected to the front and rear sides of the upper side of the positioning plate Switch 2, and both photoelectric switches 2 are facing the detection hole, and mounting openings are evenly distributed around the positioning groove, a pair of mounting columns are horizontally inserted in the mounting openings, and a wedge block 1 is slidably connected to the mounting columns, and the clamping plates are provided with several and correspondingly connected to the upper side of each wedge block 1, the double-axis cylinder is vertically installed upward in the middle of the bottom mounting plate, and a wedge plate is horizontally connected to the end of the piston rod of the double-axis cylinder, the upper edge of the wedge plate and the lower edge of the wedge block 1 are both inclined surfaces of degrees and are in sliding contact with each other, and a compression spring 1 is mounted on each of the mounting columns.

[0010] Preferably, the unloading mechanism further comprises a fixing bar, wherein the fixing bar is provided with a pair and symmetrically connected to the left and right sides of the mounting plate, the hydraulic cylinder 1 is provided with a pair and correspondingly connected to the fixing bars on both sides, the hydraulic cylinder 1 is horizontally arranged backward and connected to an articulated seat 1 at the end of its piston rod, and is hinged on the articulated seat 1. The top of the fixing bar is connected with a hinge seat 2, and a "I"-shaped hinge bar 2 is hinged on the hinge seat 2, and the other end of the hinge bar 1 located on the same side is hinged with the other end of the hinge bar 2, and the hinge bar 1 is connected with a "┤"-shaped connecting plate, and an inwardly-facing overhanging plate is cantilevered and connected to the side of the connecting plate, and the hydraulic cylinder 2 is provided with a pair and is symmetrically distributed on the left and right, and the hydraulic cylinder 2 is horizontally arranged inwardly and connected to the overhanging plate through a fixing plate, and a wedge block 2 is connected to the end of the piston rod of the hydraulic cylinder 2, and a pair of connecting nails are slidably connected to the inner end of the overhanging plate, and the unloading block is provided with a pair of threaded ends correspondingly connected to each pair of connecting nails, and the rear surface of the wedge block 2 is a slope of degrees and slides against the tightening end of each pair of connecting nails, and the unloading block is a hollow structure and adsorption holes are evenly arranged on its rear end surface, and an air suction hole is provided on the side of the unloading block, and the air suction hole is connected to an external negative pressure air source, and the connecting nails are all provided with compression springs 2.

[0011] Preferably, pick-up and placement grooves are symmetrically provided on the front and rear sides of the positioning groove.

[0012] Preferably, a mounting hole is centrally provided on the rear end face of the unloading block, and a unloading column is slidably connected in the mounting hole, and a compression spring three is connected between the inner end of the unloading column and the bottom of the mounting hole.

[0013] Preferably, an "X"-shaped reinforcement plate is connected between the left and right fixing bars.

[0014] Preferably, a transverse conveyor belt is provided between the positioning plate and the mounting frame.

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

[0016] 1. It can correctly clamp the lower plastic and the top cover. The piston rod of the double-axis cylinder extends and drives the wedge plate to move upward, and pushes the surrounding wedge blocks 1 and the clamping plate to translate outward, then put the top cover into the positioning groove on the positioning plate in reverse, and use the photoelectric switch 1 to detect whether the top cover is placed correctly, then put the lower plastic on the top of the top cover in reverse, and let the positioning column on the lower plastic be inserted into the positioning hole on the top cover. At the same time, use the photoelectric switch 2 to detect whether the lower plastic is placed correctly, and then the piston rod of the double-axis cylinder contracts and drives the wedge plate to move downward, and the surrounding wedge blocks 1 and the clamping plate translate inward under the action of the corresponding compression spring 1.

[0017] 2. The lower plastic and the top cover can be automatically removed. The piston rods of the hydraulic cylinders 1 on both sides are contracted and driven to flip the corresponding unloading blocks forward and downward to the top of the lower plastic. The piston rods of the hydraulic cylinders 2 on both sides are extended and driven to contact the upper side of the lower plastic. The lower plastic and the top cover assembled together are adsorbed by the negative pressure environment at the adsorption holes. The piston rods of the hydraulic cylinders 2 on both sides are contracted and driven to move the corresponding unloading blocks upward, and the lower plastic and the top cover are separated from the positioning groove. The piston rods of the hydraulic cylinders 1 on both sides are extended and driven to flip the corresponding unloading blocks backward and upward to the rear of the positioning plate. When the adsorption holes on the unloading blocks stop adsorbing the lower plastic, the assembled lower plastic and the top cover can be removed from the unloading blocks on both sides under the action of their own gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the overall side view of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the welding body in the present invention.

[0021] Figures 4 to 6 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0022] Figures 7 to 9 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0023] Figure 10 to Figure 11 It is a schematic diagram of the structure of the lower plastic and the top cover piece.

[0024] in:

[0025] 10-welding body; 101-mounting table; 102-mounting plate; 103-control box; 104-start switch; 105-emergency stop switch; 106-mounting frame; 107-transducer; 108-ultrasonic pressure block;

[0026] 20-fixed clamping mechanism; 201-bottom mounting plate; 202-fixed plate; 203-fixed nail; 204-connecting column; 205-positioning plate; 205a-positioning groove; 205b-avoidance groove; 205c-detection hole; 205d-pick-and-place groove; 205e-installation port; 206-photoelectric switch 1; 207-photoelectric switch 2; 208-installation column; 209-wedge block 1; 210-clamping plate; 211-double-axis cylinder; 212-wedge plate; 213-compression spring 1;

[0027] 30-unloading mechanism; 301-fixing bar; 302-hydraulic cylinder 1; 303-hinge seat 1; 304-hinge bar 1; 305-hinge seat 2; 306-hinge bar 2; 307-connecting plate; 308-overhanging plate; 309-fixing plate; 310-hydraulic cylinder 2; 311-wedge block 2; 312-connecting nail; 313-unloading block; 313a-adsorption hole; 313b-air suction hole; 313c-installation hole; 314-compression spring 2; 315-unloading column; 316-compression spring 3; 317-reinforcement plate; 318-conveyor belt;

[0028] 40-lower plastic; 401-positioning column;

[0029] 50-top cover sheet; 50a-positioning hole. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 11 As shown, a plastic ultrasonic hot melting device includes a welding body 10, a clamping mechanism 20 and a discharging mechanism 30, wherein:

[0032] The welding body 10 includes a mounting platform 101, a mounting plate 102, a mounting frame 106, a transducer 107 and an ultrasonic pressure block 108. The mounting plate 102 is horizontally mounted on the upper side of the mounting platform 101. A control box 103 is welded on the front side of the mounting platform 101. Start-stop switches 104 are symmetrically mounted on the left and right sides of the control box 103. An emergency stop switch 105 is installed in the center of the front side of the control box 103. The mounting frame 106 is The transducer 107 is vertically connected to the top of the mounting frame 106, and the ultrasonic pressure block 108 is vertically connected to the bottom of the transducer 107;

[0033] The clamping mechanism 20 is disposed above the mounting platform 101 and includes a positioning plate 205, a clamping plate 210 and a double-axis cylinder 211. The top cover sheet 50 is positioned on the upper side of the positioning plate 205 through the positioning groove 205a on the positioning plate 205. The clamping plate 210 is driven by the double-axis cylinder 211 to translate inward and clamp the lower plastic 40 on the top of the top cover sheet 50.

[0034] The unloading mechanism 30 is disposed above the mounting platform 101 and includes a hydraulic cylinder 1 302 , a hydraulic cylinder 2 310 and an unloading block 313 . The hydraulic cylinder 1 302 and the hydraulic cylinder 2 310 drive the unloading block 313 to flip backward and unload the assembled lower plastic 40 and the top cover sheet 50 from the positioning groove 205 a .

[0035] In the present embodiment, the clamping mechanism 20 further comprises a bottom mounting plate 201, the bottom mounting plate 201 is horizontally attached to the upper side of the mounting plate 102, a fixing plate 202 is placed on both the front and rear sides of the bottom mounting plate 201, and the fixing plate 202 is connected to the mounting plate 102 through a pair of fixing nails 203, the positioning plate 205 is horizontally connected to the upper side of the bottom mounting plate 201 through a plurality of connecting columns 204, a positioning groove 205a is centrally provided on the upper side of the positioning plate 205, and three avoidance grooves 205b are spaced apart at the bottom of the positioning groove 205a, a detection hole 205c is eccentrically provided at the bottom of the positioning groove 205a, and an L-shaped photoelectric switch 206 is inserted in the detection hole 205c, and the front and rear sides of the upper side of the positioning plate 205 are connected with a pair of photoelectric switches. The photoelectric switch 207 of the type is arranged, and both photoelectric switches 207 face the detection hole 205c. The positioning groove 205a is evenly distributed with mounting openings 205e. A pair of mounting posts 208 are horizontally inserted in the mounting openings 205e, and a wedge block 209 is slidably connected to the mounting posts 208. The clamping plates 210 are provided with a plurality of plates and are correspondingly connected to the upper side of each wedge block 209. The dual-axis cylinder 211 is vertically installed upward in the middle of the bottom mounting plate 201, and a wedge plate 212 is horizontally connected to the end of the piston rod of the dual-axis cylinder 211. The upper edge of the wedge plate 212 and the lower edge of the wedge block 209 are both inclined surfaces of 45 degrees and are in sliding contact with each other. The mounting posts 208 are each provided with a compression spring 213. The top cover piece 50 can be positioned by the positioning groove 205a on the positioning plate 205, and the photoelectric switch 1 206 can be used to determine whether the top cover piece 50 is placed correctly; the clamping plate 210 is driven to translate inward by the double-axis cylinder 211 through the wedge block 1 209 and the wedge plate 212, and the lower plastic 40 is clamped on the top of the top cover piece 50. At the same time, the photoelectric switch 207 can be used to determine whether the lower plastic 40 is placed correctly.

[0036] In this embodiment, the unloading mechanism 30 further includes a fixing bar 301, which is provided with a pair of fixing bars 301 and symmetrically connected to the left and right sides of the mounting plate 102, and the hydraulic cylinder 1 302 is provided with a pair of fixing bars 301 correspondingly connected to the two sides, and the hydraulic cylinder 1 302 is horizontally arranged backward and connected to an articulated seat 1 303 at the end of its piston rod, and is hinged on the articulated seat 1 303. The top of the fixed bar 301 is connected to a hinge seat 2 305, and a hinge bar 2 306 of a "I" shape is hinged on the hinge seat 2 305. The other end of the hinge bar 1 304 on the same side is hinged to the other end of the hinge bar 2 306. The hinge bar 1 304 is connected to a "┤" shaped connecting plate 307, and an inwardly facing overhanging plate 308 is cantilevered and connected to the side of the connecting plate 307. The hydraulic cylinder 2 310 is provided with a pair and is symmetrically distributed on the left and right. The hydraulic cylinder 2 310 is horizontally arranged inwardly and connected to the overhanging plate 308 through a fixing plate 309. The hydraulic cylinder 2 310 The end of the piston rod is connected to a wedge block 2 311, and the inner end of the overhanging plate 308 is slidably connected to a pair of connecting nails 312. The unloading block 313 is provided with a pair of threaded ends correspondingly connected to each pair of connecting nails 312. The rear surface of the wedge block 2 311 is a 45-degree inclined surface and slides against the tightening end of each pair of connecting nails 312. The unloading block 313 is a hollow structure and has adsorption holes 313a evenly arranged on its rear end surface. The side of the unloading block 313 is provided with suction holes 313b, and the suction holes 313b are connected to an external negative pressure air source. The connecting nails 312 are all equipped with compression springs 2 314. The piston rods of the hydraulic cylinders 1 302 on both sides are contracted and driven to flip the corresponding unloading blocks 313 forward to the top of the lower plastic 40, and then the piston rods of the hydraulic cylinders 2 310 on both sides are extended and driven to contact the upper side of the lower plastic 40, and then the lower plastic 40 and the top cover sheet 50 assembled together are adsorbed by the negative pressure environment at the adsorption holes 313a, and then the piston rods of the hydraulic cylinders 2 310 on both sides are contracted and driven to flip the corresponding unloading blocks 313 forward to the top of the lower plastic 40, and then the piston rods of the hydraulic cylinders 2 310 on both sides are extended and driven to contact the upper side of the lower plastic 40, and then the negative pressure environment at the adsorption holes 313a is used to adsorb the lower plastic 40 and the top cover sheet 50 assembled together. The unloading block 313 moves upward and separates the lower plastic 40 and the top cover sheet 50 from the positioning groove 205a, and then the piston rods of the hydraulic cylinder 1 302 on both sides extend and drive the corresponding unloading block 313 to flip backward to the rear of the positioning plate 205. When the adsorption holes 313a on the unloading block 313 stop adsorbing the lower plastic 40, the assembled lower plastic 40 and the top cover sheet 50 can be unloaded from the unloading blocks 313 on both sides under the action of their own gravity.

[0037] In this embodiment, the positioning groove 205a is symmetrically provided with a taking-in and putting-out groove 205d on both sides thereof, so as to facilitate the manual removal of the assembled lower plastic 40 and the top cover sheet 50 from the positioning groove 205a.

[0038] In this embodiment, a mounting hole 313c is centrally provided on the rear end face of the unloading block 313, and a unloading column 315 is slidably connected in the mounting hole 313c, and a compression spring 316 is connected between the inner end of the unloading column 315 and the bottom of the mounting hole 313c. The unloading column 315 and the compression spring 316 can realize the separation between the lower plastic 40 and the unloading block 313.

[0039] In this embodiment, an "X"-shaped reinforcing plate 317 is connected between the left and right fixing bars 301. The reinforcing plate 317 can increase the structural stability of the unloading mechanism 30.

[0040] In this embodiment, a horizontal conveyor belt 318 is provided between the positioning plate 205 and the mounting frame 106. The conveyor belt 318 can convey the removed lower plastic 40+top cover sheet 50 horizontally.

[0041] The working principle of this plastic ultrasonic hot melting equipment includes the following working steps:

[0042] Step 1: The piston rod of the double-axis cylinder 211 is extended to drive the wedge plate 212 to move upward, and the surrounding wedge blocks 209 and the clamping plate 210 are pushed outward, and then the top cover sheet 50 is reversed and placed into the positioning groove 205a on the positioning plate 205, and the photoelectric switch 206 is used to detect whether the top cover sheet 50 is correctly placed, and then the lower plastic 40 is reversed and placed on the top of the top cover sheet 50, and the positioning column 401 on the lower plastic 40 is correspondingly inserted into the positioning hole 50a on the top cover sheet 50. At the same time, the photoelectric switch 207 is used to detect whether the lower plastic 40 is correctly placed, and then the piston rod of the double-axis cylinder 211 is contracted and drives the wedge plate 212 to move downward, and the surrounding wedge blocks 209 and the clamping plate 210 are translated inward under the action of the corresponding compression spring 213;

[0043] Step 2: The worker presses the left and right start switches 104 with both hands respectively, and the transducer 107 and the ultrasonic pressing block 108 on the mounting frame 106 move downward immediately. When the ultrasonic pressing block 108 contacts the lower plastic 40 for a few seconds, the positioning column 401 on the lower plastic 40 can be melted into the positioning hole 50a on the top cover sheet 50. When the lower plastic 40 and the top cover sheet 50 are connected together, the transducer 107 and the ultrasonic pressing block 108 on the mounting frame 106 return to the initial height immediately.

[0044] Step 3: The piston rods of the hydraulic cylinders 1 302 on both sides are contracted to drive the corresponding unloading blocks 313 to flip forward and downward to the top of the lower plastic 40, and then the piston rods of the hydraulic cylinders 2 310 on both sides are extended to drive the corresponding unloading blocks 313 downward to contact the upper side of the lower plastic 40, and then the lower plastic 40 and the top cover sheet 50 assembled together are adsorbed by the negative pressure environment at the adsorption holes 313a, and then the piston rods of the hydraulic cylinders 2 310 on both sides are contracted to drive the corresponding unloading blocks 313 to flip forward and downward to the top of the lower plastic 40, and then the piston rods of the hydraulic cylinders 2 310 on both sides are extended to drive the corresponding unloading blocks 313 to contact the upper side of the lower plastic 40, and then the negative pressure environment at the adsorption holes 313a is used to adsorb the lower plastic 40 and the top cover sheet 50 assembled together, and then the piston rods of the hydraulic cylinders 2 310 on both sides are contracted to drive the corresponding The corresponding unloading block 313 moves upward and separates the lower plastic 40 and the top cover sheet 50 from the positioning groove 205a, and then the piston rods of the hydraulic cylinder 1 302 on both sides extend and drive the corresponding unloading block 313 to flip backward and upward to the rear of the positioning plate 205. When the adsorption holes 313a on the unloading block 313 stop adsorbing the lower plastic 40, the assembled lower plastic 40 and the top cover sheet 50 can be unloaded from the unloading blocks 313 on both sides under the action of their own gravity.

[0045] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A plastic ultrasonic hot-melt device, characterized in that: It comprises a welding body (10), a clamping mechanism (20) and a discharging mechanism (30), wherein: The welding body (10) comprises a mounting platform (101), a mounting plate (102), a mounting frame (106), a transducer (107) and an ultrasonic pressure block (108); the mounting plate (102) is horizontally mounted on the upper side of the mounting platform (101); a control box (103) is welded to the front side of the mounting platform (101); start-stop switches (104) are symmetrically mounted on the left and right sides of the control box (103); an emergency stop switch (105) is centrally mounted on the front side of the control box (103); the mounting frame (106) is a "𠃍"-shaped structure and is vertically mounted on the upper side of the mounting platform (101); the transducer (107) is vertically connected to the top of the mounting frame (106), and the ultrasonic pressure block (108) is vertically connected to the bottom of the transducer (107); The fixing and clamping mechanism (20) is arranged above the mounting platform (101) and comprises a positioning plate (205), a clamping plate (210) and a double-axis cylinder (211). The top cover sheet (50) is positioned on the upper side of the positioning plate (205) through the positioning groove (205a) on the positioning plate (205). The clamping plate (210) is driven by the double-axis cylinder (211) to translate inward and clamp the lower plastic (40) above the top cover sheet (50); The unloading mechanism (30) is arranged above the mounting platform (101) and comprises a hydraulic cylinder 1 (302), a hydraulic cylinder 2 (310) and an unloading block (313). The hydraulic cylinder 1 (302) and the hydraulic cylinder 2 (310) drive the unloading block (313) to flip backwards and unload the assembled lower plastic (40) and the top cover sheet (50) from the positioning groove (205a); The clamping mechanism (20) further comprises a bottom mounting plate (201), the bottom mounting plate (201) being horizontally attached to the upper side of the mounting plate (102), a fixing plate (202) being placed on both the front and rear sides of the bottom mounting plate (201), and the fixing plate (202) being connected to the mounting plate (102) via a pair of fixing nails (203), the positioning plate (205) being horizontally connected to the upper side of the bottom mounting plate (201) via a plurality of connecting columns (204), a positioning groove (205a) being centrally provided on the upper side of the positioning plate (205), and three avoidance grooves (205b) being spaced apart at the bottom of the positioning groove (205a), a detection hole (205c) being eccentrically provided on the bottom of the positioning groove (205a), and an L-shaped photoelectric switch (206) being inserted into the detection hole (205c), and a counter-radiation type photoelectric switch (206) being connected to the front and rear sides of the upper side of the positioning plate (205) The photoelectric switch (207) is arranged on the bottom plate (201), and the two photoelectric switches (207) are both facing the detection hole (205c). The positioning groove (205a) is evenly distributed with mounting openings (205e). A pair of mounting posts (208) are horizontally inserted in the mounting openings (205e), and a wedge block (209) is slidably connected to the mounting posts (208). The clamping plates (210) are provided with a plurality of them and are correspondingly connected to the upper side of each wedge block (209). The double-axis cylinder (211) is vertically upwardly mounted in the middle of the bottom plate (201), and a wedge plate (212) is horizontally connected to the end of the piston rod of the double-axis cylinder (211). The upper edge of the wedge plate (212) and the lower edge of the wedge block (209) are both inclined surfaces of 45 degrees and are in sliding contact with each other. The mounting posts (208) are each provided with a compression spring (213). The unloading mechanism (30) further comprises a fixing bar (301), wherein the fixing bar (301) is provided with a pair and symmetrically connected to the left and right sides of the mounting plate (102), the hydraulic cylinder (302) is provided with a pair and correspondingly connected to the fixing bars (301) on both sides, the hydraulic cylinder (302) is horizontally arranged backward and connected to an articulated seat (303) at the end of its piston rod, and a "𠃍"-shaped articulated bar (304) is articulated on the articulated seat (303), the top end of the fixing bar (301) is connected to an articulated seat (305), and the top end of the fixing bar (301) is connected to an articulated seat (305) and the top end of the fixing bar (301) is connected to an articulated seat (305). The second seat (305) is hinged with a "I"-shaped hinge bar (306), and the other end of the hinge bar (304) located on the same side is hinged with the other end of the hinge bar (306). The hinge bar (304) is connected with a "┤"-shaped connecting plate (307), and an inwardly facing overhanging plate (308) is cantilevered and connected to the side of the connecting plate (307). The second hydraulic cylinder (310) is provided with a pair and is symmetrically distributed on the left and right. The second hydraulic cylinder (310) is horizontally arranged inwardly and connected to the overhanging plate (308) through a fixing plate (309). The piston rod end of the second hydraulic cylinder (310) is connected to a wedge block (311), the inner end of the overhanging plate (308) is slidably connected to a pair of connecting nails (312), the unloading block (313) is provided with a pair of threaded ends correspondingly connected to each pair of connecting nails (312), the rear surface of the wedge block (311) is a 45-degree inclined surface and slidably abuts against the tightening end of each pair of connecting nails (312), the unloading block (313) is a hollow structure and has suction holes (313a) uniformly arranged on its rear end surface, and the side of the unloading block (313) is provided with suction holes (313a). The air hole (313b) is connected to an external negative pressure air source, the connecting pin (312) is provided with a second compression spring (314), a mounting hole (313c) is centrally provided on the rear end surface of the unloading block (313), and a unloading column (315) is slidably connected in the mounting hole (313c), a third compression spring (316) is connected between the inner end of the unloading column (315) and the bottom of the mounting hole (313c), and a horizontal conveyor belt (318) is provided between the positioning plate (205) and the mounting frame (106).

2. The ultrasonic hot melting device for lower plastic according to claim 1, characterized in that: The positioning groove (205a) is symmetrically provided with pick-up and placement grooves (205d) on both the front and rear sides.

3. The ultrasonic hot melting device for lower plastic according to claim 1, characterized in that: An "X"-shaped reinforcement plate (317) is connected between the left and right fixing bars (301).

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