Glue dosing device for plate tooth jointing machine

Abstract

The present invention provides a glue dispensing and docking device for a plate tooth joint machine, comprising a frame, a front clamp and a rear clamp movably arranged on the frame, the front clamp comprising a front lower clamping plate, front longitudinal guide rails arranged on both sides of the front clamp and a front upper clamping plate that moves up and down along the front longitudinal guide rails, the rear clamp comprising a rear lower clamping plate, rear longitudinal guide rails arranged on both sides of the rear clamp and a rear upper clamping plate that moves up and down along the rear longitudinal guide rails, a mobile glue dispensing device is also provided between the front clamp and the rear clamp, the mobile glue dispensing device comprises a front glue dispensing rod group and a rear glue dispensing rod group, the glue dispensing and docking device of the present invention, the mobile glue dispensing device moves upward between the front clamp and the rear clamp so that the front glue dispensing rod group and the rear glue dispensing rod group face the front clamp and the rear clamp, the front clamp and the rear clamp move relatively after clamping the plate, and the glue dispensing operation can be completed at one time, compared with the prior art, the glue dispensing processing time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plate gear joint machine manufacturing, in particular to a glue dot joint device of a plate gear joint machine. Background Art

[0002] At present, the tooth connection device of the common existing plate tooth connection machine is usually composed of a plate clamping mechanism, a glue feeding mechanism, a support plate and a cooling mechanism, and its working principle is: two groups of clamping mechanisms respectively clamp the plates to be toothed, then the glue feeding mechanism moves to the toothed end face of the plate to be processed, and the glue dispensing gun on the glue feeding mechanism is controlled to release glue while moving along the contour of the toothed end face of the plate to be processed, thereby making the toothed end face of the plate to be processed covered with glue, and then the glue feeding mechanism is moved away, and the two groups of clamping mechanisms move toward each other, so that the two plates are toothed and spliced ​​together; however, the glue dispensing gun of the glue feeding mechanism is controlled to move along the contour of the toothed end face of the plate while dispensing glue, and the whole operation process is relatively time-consuming, which is not conducive to improving production efficiency. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a glue dispensing and docking device for a plate tooth joint machine which can shorten the glue dispensing processing time and improve the production efficiency.

[0004] The present invention achieves the above object by:

[0005] The dispensing and docking device of the plate gear joint machine of the present invention comprises a frame, a front clamp and a rear clamp movably arranged on the frame, the front clamp comprises a front lower clamp plate, front longitudinal guide rails arranged on both sides of the front clamp and a front upper clamp plate moving up and down along the front longitudinal guide rails, the rear clamp comprises a rear lower clamp plate, rear longitudinal guide rails arranged on both sides of the rear clamp and a rear upper clamp plate moving up and down along the rear longitudinal guide rails, a mobile dispensing device is also arranged between the front clamp and the rear clamp, the mobile dispensing device comprises a front dispensing rod group and a rear dispensing rod group, positive and negative thread screws driven by servo motors are arranged in the horizontal direction on both sides of the frame, the front clamp and the rear clamp are provided with screw nuts corresponding to the positive thread segments and negative thread segments on the positive and negative thread screws respectively, a guide column is arranged in the horizontal direction on the front clamp, a guide ring is arranged on the rear clamp, and the guide The free end of the column can be movably mounted in the guide ring; front guide rails are provided on both sides of the front clamp, and rear guide rails are provided on both sides of the rear clamp, and also include two auxiliary clamps, the two auxiliary clamps are slidably connected to the front rails and the rear guide rails respectively, the frame is also provided with an auxiliary screw driven by a motor, and auxiliary screw nuts matching the auxiliary screw are provided on both sides of the auxiliary clamp; also includes two groups of support plates, one end of the support plate is provided with a connecting block through an elastic belt, the connecting block is connected to a spring fixed on the frame, and the elastic belt is also pressed against a roller rotatably connected to the frame, the other end of one group of support plates passes through between the front upper clamp and the front lower clamp of the front clamp, and the other end of the other group of support plates passes through between the rear upper clamp and the rear lower clamp of the rear clamp, and the support plates cooperate with the plate conveying mechanism.

[0006] Furthermore, a cold pressing clamp is provided between the front clamp and the rear clamp, and the cold pressing clamp includes a cold pressing bracket, an upper cold pressing plate and a lower cold pressing plate connected to the cold pressing bracket so as to be movably connected toward each other, cold pressing guide rails are provided on the side arms on both sides of the cold pressing bracket, and cold pressing slide grooves matching the cold pressing guide rails are provided at both ends of the upper cold pressing plate and the lower cold pressing plate.

[0007] Furthermore, a rotating shaft is provided on the inner side of the side arm, a rotating arm is mounted on the rotating shaft, two opposite free ends of the rotating arm are rotatably connected to swing rods, and the other ends of the two swing rods are rotatably connected to the upper cold pressing plate and the lower cold pressing plate.

[0008] Furthermore, a pre-tension spring is provided on the cold-pressing support, and a lower free end of the pre-tension spring is connected to the upper cold-pressing plate.

[0009] Furthermore, a linkage mechanism is provided on the guide column, and the linkage mechanism includes a linkage pressing wheel arranged between the front clamp and the cold pressing clamp. Linkage inclined surfaces that can cooperate with the linkage pressing wheel are provided on both ends of the upper cold pressing plate, and the linkage inclined surfaces are inclined upward from front to rear.

[0010] Furthermore, a front mounting plate is provided above the front upper splint, a front cylinder is provided on the front mounting plate, the free end of the front cylinder is connected to the front upper splint, front guide grooves cooperating with the front guide rail are provided on both sides of the front lower splint, a rear mounting plate is provided above the rear upper splint, a rear cylinder is provided on the rear mounting plate, the free end of the rear cylinder is connected to the rear upper splint, and rear guide grooves cooperating with the rear guide rail are provided on both sides of the rear lower splint.

[0011] Furthermore, the frame is provided with a lifting guide column, and the mobile dispensing device is provided with a lifting shaft sleeve that fits the lifting guide column.

[0012] Beneficial effects of the present invention:

[0013] By using the glue dispensing and docking device provided by the present invention, when glue dispensing and docking are required, the front clamp and the rear clamp are first controlled to move in opposite directions to clamp the tail of the front end plate and the head of the rear end plate respectively, and the mobile glue dispensing device is also driven to move upward, so that the mobile glue dispensing device enters between the front clamp and the rear clamp, and then, the front clamp and the rear clamp are driven to move relatively, so that the tail of the front end plate and the head of the rear end plate are respectively close to the front glue dispensing rod group and the rear glue dispensing rod group to achieve glue dispensing. After the glue dispensing is completed, the mobile glue dispensing device moves downward and exits, and continues to drive the front clamp and the rear clamp to move relatively, so that the serrations at the tail of the front end plate are meshed and docked with the serrations at the head of the rear end plate to achieve bonding of the two. Compared with the prior art, since the glue dispensing rod does not need to move along the toothed end surface of the plate while performing glue coating, the glue dispensing processing time can be shortened and the production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the overall structure of a glue-dispensing butt joint device of a plate gear joint machine in one embodiment of the present invention;

[0016] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0017] Figure 3 for Figure 1 A magnified schematic diagram of B;

[0018] Figure 4 It is a structural schematic diagram of a mobile dispensing device in one embodiment of the present invention;

[0019] Figure 5 It is a schematic diagram of the connection relationship between the front clamp, the rear clamp, the cold pressing clamp and the mobile dispensing device in one embodiment of the present invention;

[0020] Figure 6 for Figure 5A magnified schematic diagram of middle C;

[0021] Figure 7 This is a schematic diagram of the structure of the front clip and the rear clip in one embodiment of the present invention;

[0022] Figure 8 It is a schematic diagram of the overall structure of a cooling mechanism in one embodiment of the present invention;

[0023] Fig. 9 It is a partial structural schematic diagram of a cooling mechanism in one embodiment of the present invention.

[0024] In the figure, 1 a frame, 11 a lifting guide column, 12 a motor, 13 an auxiliary lead screw, 14 an auxiliary lead screw nut, 2 a front clamp, 20 a front clamp bracket, 21 a front lower clamp plate, 22 a front longitudinal guide rail, 23 a front upper clamp plate, 24 a guide column, 25 a front cylinder, 26 a front guide rail, 27 a front guide groove, 28 a front mounting plate, 29 a front side plate, 3 a rear clamp, 30 a rear clamp bracket, 31 a rear lower clamp plate, 32 a rear longitudinal guide rail, 33 a rear upper clamp plate, 34 a guide ring, 35 a rear cylinder, 36 a rear guide rail, 37 a rear guide groove, 38 a rear mounting plate, 39 a rear side plate, 4 a mobile dispensing device, 4 0 chassis, 41 front glue stick group, 42 rear glue stick group, 43 lifting sleeve, 44 fixed seat, 5 servo motor, 51 positive and negative threaded screw, 52 screw nut, 6 cold pressing clamp, 60 cold pressing bracket, 61 upper cold pressing plate, 62 lower cold pressing plate, 63 side arm, 64 cold pressing guide rail, 65 cold pressing slide, 66 rotating shaft, 67 rotating arm, 68 rocker arm, 69 preload spring, 610 linkage inclined plane, 611 guide seat, 7 linkage mechanism, 71 linkage pressure wheel, 72 pressure wheel mounting seat, 8 support plate, 81 elastic belt, 82 connecting block, 83 spring, 84 roller. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The schematic implementation scheme of the present invention and its description are only used to analyze the present invention and are not intended to limit the present invention.

[0026] Figure 1-Figure 9 A dispensing and docking device for a plate tooth-jointing machine according to an embodiment of the present invention is shown, comprising a frame 1, a front clamp 2 and a rear clamp 3 movably arranged on the frame 1, the front clamp 2 comprising a front lower clamp plate 21, front longitudinal guide rails 22 arranged on both sides of the front clamp 2 and a front upper clamp plate 23 moving up and down along the front longitudinal guide rails 22, the rear clamp 3 comprising a rear lower clamp plate 31, rear longitudinal guide rails 32 arranged on both sides of the rear clamp 3 and a rear upper clamp plate 32 moving up and down along the rear longitudinal guide rails 32, a mobile dispensing device 4 is also provided between the front clamp 2 and the rear clamp 3, and the mobile dispensing device 4 comprises a front dispensing stick group 41 and a rear dispensing stick group 42.

[0027] When glue docking is required, first drive the front clamp 2 and the rear clamp 3 to open up and down and move back to each other, so that the tail of the front plate and the head of the rear plate pass through the upper and lower clamps of the front clamp 2 and the rear clamp 3 respectively, and then drive the front clamp 2 and the rear clamp 3 to clamp the tail of the front plate and the head of the rear plate respectively. At the same time, move the glue device 4 upward and enter between the front clamp 2 and the rear clamp 3, so that the front glue stick group 41 is serrated toward the tail of the front plate clamped by the front clamp 2, and the rear glue stick group 42 is serrated toward the head of the rear plate clamped by the rear clamp 3, and then the front clamp 2 and the rear clamp 3 are moved toward each other through the corresponding driving mechanism, so that the tail serration of the front plate abuts against the front glue stick group 41, and the head serration of the rear plate abuts against the rear glue stick group 42, thereby realizing the glue work. After the glue dispensing is completed, The mobile glue dispensing device 4 moves downward and exits, and continues to drive the front clamp 2 and the rear clamp 3 to move toward each other until the tail serrations of the front plate mesh with the head serrations of the rear plate to achieve bonding of the two.

[0028] Among them, Figure 5-Figure 7 As shown, the front clip 2 also includes a front clip bracket 20, which is composed of a front mounting plate 28 and a front side plate 29 connected to both sides of the front mounting plate 28, the front longitudinal guide rail 22 is arranged on the inner side of the front side plate 29, the front mounting plate 28 is located above the front upper clamping plate 23, and the front lower clamping plate 21 is fixedly connected to the front side plate 29 of the front clip bracket 20; the rear clip 3 also includes a rear clip bracket 30, which is composed of a rear mounting plate 38 and a rear side plate 39 connected to both sides of the rear mounting plate 38, the rear longitudinal guide rail 32 is arranged on the inner side of the rear side plate 39, the rear mounting plate 38 is located above the rear upper clamping plate 33, and the rear lower clamping plate 31 is fixedly connected to the rear side plate 39 of the rear clip bracket 30;

[0029] like Figure 6 As shown, both sides of the frame 1 are laterally provided with forward and reverse threaded screws 51 driven by a servo motor 5, and the forward and reverse threaded screws 51 are provided with forward threaded sections and reverse threaded sections (not shown in the figure), and the outer sides of the front side plates 29 of the front clamp 2 and the outer sides of the rear side plates 39 of the rear clamp 3 are respectively provided with screw nuts 52 corresponding to the forward threaded sections and reverse threaded sections of the forward and reverse threaded screws 51, wherein the threads of the two groups of screw nuts 52 have the same rotation direction, and with the rotation of the forward and reverse threaded screws 51, the front clamp 2 and the rear clamp 3 can be smoothly moved toward or away from each other, and the servo motor can accurately control the rotation speed, so that the moving distance of the front and rear plates during dispensing and bonding is more accurate, thereby ensuring better dispensing and bonding effects.

[0030] Furthermore, as shown in the figure, a guide column 24 is fixedly provided on the front mounting plate 28 of the front clamp 2 in the transverse direction, and a guide ring 33 is provided on the rear mounting plate 38 of the rear clamp 3. The free end of the guide column 24 can be movably mounted in the guide ring 33. This guide structure can be provided with a group on both sides of the front clamp 2 and the rear clamp 3, respectively. In the driving mechanism composed of two groups of positive and negative threaded screws 51 and screw nuts 52, by combining two groups of the above-mentioned guide structures, the movement of the front clamp 2 and the rear clamp 3 can be made smoother.

[0031] Furthermore, if Figure 6 , Figure 8 , Fig. 9 As shown, a cold pressing clamp 6 is further provided between the front clamp 2 and the rear clamp 3, and the cold pressing clamp 6 includes a cold pressing bracket 60, an upper cold pressing plate 61 and a lower cold pressing plate 62 which are movably connected to the cold pressing bracket 60, and a cold pressing guide rail 64 is provided on the side arms 63 on both sides of the cold pressing bracket 60, and cold pressing slide grooves 65 which match the cold pressing guide rail 64 are provided at both ends of the upper cold pressing plate 61 and the lower cold pressing plate 62, wherein a rotating shaft 66 is provided on the inner side of the side arm 63, and a rotating shaft 66 is sleeved on the rotating shaft Arm 67, the two opposite free ends of the rotating arm 67 are rotatably connected with a rocker rod 68, the upper cold pressing plate 61 is rotatably connected to the rocker rod 68 connected to the upper free end of the rotating arm 67, the lower cold pressing plate 62 is rotatably connected to the rocker rod 68 connected to the lower free end of the rotating arm 67, the cold pressing bracket 60 is also provided with a pre-tensioning spring 69, the free end of the pre-tensioning spring 69 is connected to the upper cold pressing plate 61, the outer side of the side arm 63 is also provided with a guide seat 611, the forward and reverse threaded screws 51 are slidably mounted in the guide seat 611.

[0032] Preferably, in order to achieve higher bonding efficiency, coolant is filled in the upper cold pressing plate 61 and the lower cold pressing plate 62, so that the glue can solidify faster when it is clamped on the serrated interface of the material after the glue is dispensed and docked.

[0033] Furthermore, if Figure 7 , Figure 8 As shown, the guide column 24 is also provided with a linkage mechanism 7, and the linkage mechanism 7 includes a linkage pressing wheel 71 arranged between the front clamp 2 and the cold pressing clamp 6, and the linkage pressing wheel 71 is fixed to the guide column 24 through a pressing wheel mounting seat 72, and linkage inclined surfaces 610 cooperating with the linkage pressing wheel 71 are provided on both ends of the upper cold pressing plate 61, and the linkage inclined surfaces 610 are inclined upward from front to rear;

[0034] When the front clamp 2 and the rear clamp 3 move relative to each other, the linkage pressing wheel 71 moves laterally with the guide column 24 to the linkage inclined surface 610. After that, the linkage pressing wheel 71 continues to move laterally along the linkage inclined surface 610 with the guide column 24, and presses the linkage inclined surface 610 downward during the lateral movement, pushing the upper cold press plate 61 to move downward. The cold press plate 61 pushes the rotating arm 67 to swing through the rocker arm 68. The swing of the rotating arm 67 drives the rocker arm 68 connected to the lower cold press plate 62 to move upward, thereby driving the lower cold press plate 62 to move upward.

[0035] Furthermore, if Figure 7 As shown, a front cylinder 25 is provided on the front mounting plate 28, and a free end of the front cylinder 25 passes through the front mounting plate 28 and is fixedly connected to the front upper clamping plate 23; a rear cylinder 35 is provided on the rear mounting plate 38, and a free end of the rear cylinder 35 passes through the rear mounting plate 38 and is fixedly connected to the rear upper clamping plate 33; front guide rails 26 and rear guide rails 36 are provided on both sides of the frame 1, and the front guide rails 26 are located on both sides of the front clamp 2, specifically, located in the front clamp frame 20, and located below the front lower clamping plate 21, and front guide grooves 27 that match the front guide rails 26 are provided on both sides of the front lower clamping plate 21; the rear guide rails 36 are located on both sides of the rear clamp 3, specifically, located in the rear clamp frame 30, and located below the rear lower clamping plate 31, and rear guide grooves 37 that match the rear guide rails 36 are provided on both sides of the rear lower clamping plate 31.

[0036] Furthermore, if Figure 4 As shown, the frame 1 is also rotatably provided with a lifting guide column 11, and the mobile dispensing device 4 also includes a fixed seat 44 and a base frame 40, the lifting guide column 11 is fixedly connected to the base frame 40, the fixed seat 44 is located in the base frame 40, and the fixed seat 44 is provided with a lifting shaft sleeve 43 that fits with the lifting guide column 11, the front dispensing stick group 41 and the rear dispensing stick group 42 are respectively provided on both sides of the top surface of the fixed seat 44, wherein the lifting and lowering of the fixed seat 44 can be driven by a driving mechanism, such as a chain sprocket, etc., which is not limited here.

[0037] Furthermore, in this embodiment, if Figure 3As shown, it also includes two groups of pallets 8, one end of each of the pallets 8 is provided with a connecting block 82 through an elastic belt 81, and the connecting block 82 is connected to a spring 83 fixed on the frame 1. The elastic belt 81 is also pressed against a roller 84 rotatably connected to the frame 1. The other end of one group of pallets 8 passes through the front upper clamping plate 23 and the front lower clamping plate 21 of the front clamp 2, and the other end of the other group of pallets 8 passes through the rear upper clamping plate 33 and the rear lower clamping plate 31 of the rear clamp 3. The pallets 8 and the sheet conveying mechanism are mutually connected. Cooperate to receive the plate and guide the plate to move toward the front clamp 2 and the rear clamp 3, so that the tail serrations of the front plate and the head serrations of the rear plate pass through the front clamp 2 and the rear clamp 3, and protrude from the other end of the support plate 8. In this way, during the subsequent gluing operation, the front clamp 2 and the rear clamp 3 can directly clamp the plate and the support plate 8, and then the gluing operation and the plate docking operation are realized through relative movement, which reduces the operating steps, improves production efficiency, and can also reduce mechanical loss to a certain extent.

[0038] Furthermore, if Figure 2 As shown, in this embodiment, two auxiliary clamps 9 are also included, the front clamp 2 and the rear clamp 3 are located between the two auxiliary clamps 9, the structural composition of the auxiliary clamp 9 is the same as that of the front clamp 2 and the rear clamp 3, and no further description is given here. The two sides of the two auxiliary clamps 9 are respectively slidably connected to the front guide rail 26 and the rear guide rail 36, and the frame 1 is also provided with an auxiliary lead screw 13 driven by a motor 12, and auxiliary lead screw nuts 14 matching the auxiliary lead screw 13 are provided on both sides of the auxiliary clamp 9; the auxiliary clamp 9 clamps the plate to be toothed and moves it horizontally, so that the front end plate The tail serrations and the head serrations of the rear end plate pass through the front clamp 2 and the rear clamp 3 respectively. After that, when the front clamp 2 and the rear clamp 3 clamp the corresponding plates, the auxiliary clamp 9 is controlled to release the plates and reset them. The front clamp 2 and the rear clamp 3 move relative to each other to realize the gluing and tooth connection operations. In this way, the front clamp 2 and the rear clamp 3 do not need to move back to back to make the serrations of the corresponding plates pass between the upper clamp and the lower clamp. The moving distance of the front clamp 2 and the rear clamp 3 is reduced, which shortens the duration of the entire gluing and docking operation process, thereby improving production efficiency.

[0039] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the claims and scope of the present invention should belong to the scope covered by the claims of the present invention.

Claims

1. A glue dispensing butt joint device for a plate tooth joint machine, characterized in that: The invention comprises a frame (1), a front clamp (2) and a rear clamp (3) movably arranged on the frame (1); the front clamp (2) comprises a front lower clamp (21), front longitudinal guide rails (22) arranged on both sides of the front clamp (2), and a front upper clamp (23) moving up and down along the front longitudinal guide rails (22); the rear clamp (3) comprises a rear lower clamp (31), rear longitudinal guide rails (32) arranged on both sides of the rear clamp (3), and a rear upper clamp (33) moving up and down along the rear longitudinal guide rails (32); and a rear lower clamp (31) is provided between the front clamp (2) and the rear clamp (3). A mobile glue dispensing device (4), the mobile glue dispensing device (4) comprising a front glue dispensing stick group (41) and a rear glue dispensing stick group (42), the frame (1) being provided with positive and negative threaded lead screws (51) driven by a servo motor (5) on both sides of the frame (1) in a lateral direction, the front clamp (2) and the rear clamp (3) being provided with lead screw nuts (52) corresponding to the positive threaded section and the negative threaded section of the positive and negative threaded lead screws (51) respectively, the front clamp (2) being provided with a guide column (24) in a lateral direction, the rear clamp (3) being provided with a guide ring (34), the free end of the guide column (24) being movably mounted on the front clamp (2) and the rear clamp (3) being provided with a guide ring (34), the guide column (24) being provided with a guide ring (34) on the front clamp (2) and the rear clamp (3) being provided with a guide ring (34) on the rear side of the front clamp (2) and the guide column (24) being provided with a guide ring (34) on the rear side of the front clamp (2) and the front clamp (2 ... In the guide ring (34); front guide rails (26) are provided on both sides of the front clamp (2); rear guide rails (36) are provided on both sides of the rear clamp (3); and two auxiliary clamps (9) are also included. The two auxiliary clamps (9) are slidably connected to the front guide rails (26) and the rear guide rails (36) respectively. The frame (1) is also provided with an auxiliary lead screw (13) driven by a motor (12); and auxiliary lead screw nuts (14) matched with the auxiliary lead screw (13) are provided on both sides of the auxiliary clamp (9); and two sets of support plates (8) are also included. One end is provided with a connecting block (82) through an elastic belt (81), the connecting block (82) is connected to a spring (83) fixed on the frame (1), the elastic belt (81) is also pressed against a roller (84) rotatably connected to the frame (1), the other end of one group of supporting plates (8) passes through between the front upper clamp (23) and the front lower clamp (21) of the front clamp (2), and the other end of the other group of supporting plates (8) passes through between the rear upper clamp (33) and the rear lower clamp (31) of the rear clamp (3), and the supporting plates (8) cooperate with the plate conveying mechanism.

2. The glue dispensing butt jointing device for a plate tooth jointing machine according to claim 1, characterized in that: A cold pressing clamp (6) is also provided between the front clamp (2) and the rear clamp (3), and the cold pressing clamp (6) comprises a cold pressing bracket (60), an upper cold pressing plate (61) and a lower cold pressing plate (62) connected to the cold pressing bracket (60) so as to be movably connected to each other, cold pressing guide rails (64) are provided on the side arms (63) on both sides of the cold pressing bracket (60), and cold pressing slide grooves (65) matching the cold pressing guide rails (64) are provided at both ends of the upper cold pressing plate (61) and the lower cold pressing plate (62).

3. The glue-dotting device for the plate tooth-jointing machine according to claim 2 is characterized in that: A rotating shaft (66) is provided on the inner side of the side arm (63), and a rotating arm (67) is mounted on the rotating shaft (66). Two opposite free ends of the rotating arm (67) are rotatably connected to swing rods (68), and the other ends of the two swing rods (68) are rotatably connected to the upper cold pressing plate (61) and the lower cold pressing plate (62).

4. The glue-dotting device for the plate tooth-jointing machine according to claim 3 is characterized in that: The cold pressing support (60) is provided with a pre-tensioning spring (69), and the lower free end of the pre-tensioning spring (69) is connected to the upper cold pressing plate (61).

5. The glue-dotting device for the plate tooth-jointing machine according to claim 4 is characterized in that: The guide column (24) is also provided with a linkage mechanism (7), the linkage mechanism (7) comprising a linkage pressing wheel (71) arranged between the front clamp (2) and the cold pressing clamp (6), and linkage inclined surfaces (610) which can cooperate with the linkage pressing wheel (71) are provided at both ends of the upper cold pressing plate (61), and the linkage inclined surfaces (610) are inclined upward from front to rear.

6. The glue-dispensing butt jointing device for a plate tooth jointing machine according to claim 1, characterized in that: A front mounting plate (28) is provided above the front upper clamping plate (23), a front cylinder (25) is provided on the front mounting plate (28), a free end of the front cylinder (25) is connected to the front upper clamping plate (23), front guide rails (26) are provided on both sides of the front clamp (2), front guide grooves (27) matching with the front guide rails (26) are provided on both sides of the front lower clamping plate (21), a rear mounting plate (38) is provided above the rear upper clamping plate (33), a rear cylinder (35) is provided on the rear mounting plate (38), a free end of the rear cylinder (35) is connected to the rear upper clamping plate (33), rear guide rails (36) are provided on both sides of the rear clamp (3), and rear guide grooves (37) matching with the rear guide rails (36) are provided on both sides of the rear lower clamping plate (31).

7. The glue dispensing butt jointing device for a plate tooth jointing machine according to claim 1, characterized in that: The frame (1) is provided with a lifting guide column (11), and the mobile glue dispensing device (4) is provided with a lifting shaft sleeve (43) which is fitted and matched with the lifting guide column (11).

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