A three-head traction machine

Abstract

The present invention relates to a three-head traction machine, which comprises a frame, wherein an upper track and a lower track are arranged on the frame, and an upper traction head and a lower traction head are arranged on the upper track and the lower track respectively; the upper traction head comprises an upper frame, an upper clamping frame which can be translated left and right is arranged below the upper frame, an upper pressure claw assembly and an upper clamp are arranged on the upper clamping frame, and the lower traction head comprises a lower frame, a lower clamping frame which can be translated left and right is arranged above the lower frame, a lower pressure claw assembly and a lower clamp are arranged on the lower clamping frame, and the upper clamping frame can make a working space for the lower pressure claw assembly and the lower clamp on the lower clamping frame by making a left and right translation, and the lower clamping frame can also make a working space for the upper pressure claw assembly and the upper clamp on the upper clamping frame by making a left and right translation. The present invention relates to a three-head traction machine, which has a simple structure, a low failure rate, good operation stability and high traction efficiency.

Description

Technical Field

[0001] The invention relates to a three-head traction machine, belonging to the technical field of aluminum profile production equipment. Background Art

[0002] In the extrusion production process of aluminum alloy profiles, the profile must be interrupted after each aluminum rod is extruded in order to facilitate the subsequent processes such as transmission and straightening. In addition, traction assistance is very important in the extrusion process, especially for the currently popular multi-hole die extrusion and some profiles that are difficult to extrude. Good and effective traction assistance can not only ensure the discharge of the profile, but also improve production efficiency and yield rate.

[0003] Traditional traction machines are mostly single-head traction machines. When traction reaches a certain position, the single-head traction machine puts down the profile, then returns to the starting point of traction and repeats the work. This single traction method is very inefficient. There are also double-head traction machines in the existing technology. Their working form is: the previous traction device pulls the profile over, and at a certain place, the pulled profile is handed over to another traction device for continued traction, and the previous traction device returns to complete the relay of the profile. Although this method can achieve uninterrupted traction, the traction machine will collide with the traction machine during the relay process, and the traction machine will pause when the profile is handed over, causing the profile to bend in the axial direction. At the same time, scratches are easily caused on the surface of the profile, affecting the quality of the profile.

[0004] The three-head traction machine currently on the market usually includes a frame, an upper track and a lower track are arranged on the frame, and an upper traction head and a lower traction head are arranged on the upper track and the lower track respectively, and the upper traction head and the lower traction head can alternately perform traction operations, so that the production of profiles is uninterrupted, continuous operation is guaranteed, and production efficiency is improved, which well solves the above technical problems. However, in order to enable the upper traction head and the lower traction head to smoothly alternate their working positions, the existing three-head traction machine usually needs to add a transverse movement mechanism or a lifting mechanism to the traction head, and through the transverse movement mechanism or the lifting mechanism, one of the traction heads makes room for the other traction head, so as to smoothly complete the alternation of working positions, which makes the structure of the whole set of mechanisms complicated and greatly increases the production cost.

[0005] The invention patent application with application number 201910710981.1 discloses a three-head traction machine traction head structure, which includes a frame, a support shaft is fixedly provided on the frame, an intermediate support plate and a gear are mounted on the support shaft, a frame is provided on the intermediate support plate, a worm gear reducer is provided on the frame, a pressure claw assembly is provided on the outer side of the frame, the outer output end is connected to the pressure claw assembly, a fork assembly is provided on the inner output end, a rack is provided on the intermediate support plate, a clamping plate is provided on the top of the rack, the rack cooperates with the gear, and the clamping plate cooperates with the fork assembly. The three-head traction machine traction head structure can realize the rotation of the entire traction head through the power of the clamping mechanism, thereby making room for the other traction head when alternating working positions, eliminating the existing transverse movement mechanism or lifting mechanism, simplifying the overall structure, and reducing the production and manufacturing costs. However, it has the following defects:

[0006] 1. When alternating working positions, the rotation of the entire traction head is realized by the power of the clamping mechanism to make room for the other traction head. Although the existing transverse movement mechanism or lifting mechanism is cancelled, the overall structure is still complicated;

[0007] 2. The pressure claw assembly and the worm gear reducer are located on the same side of the track, so the center of gravity of the entire traction head is biased to one side of the track, the running stability of the traction head is poor, and the traction efficiency is affected;

[0008] 3. The pressure claw assembly and the worm gear reducer are arranged at a position close to the frame. In order to realize the normal operation of the worm gear reducer, it is necessary to equip the frame with a corresponding electrical system. The mechanical structure and the electrical system are mixed together, the control circuit is complex and the failure rate is high. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a three-head traction machine with simple structure, low failure rate, good operation stability and high traction efficiency in view of the above-mentioned prior art.

[0010] The technical solution adopted by the present invention to solve the above problem is: a three-head traction machine, which includes a frame, an upper track and a lower track are arranged on the frame, and an upper traction head and a lower traction head are arranged on the upper track and the lower track respectively;

[0011] The upper traction head includes an upper frame, an upper clamping frame which can be translated left and right is arranged below the upper frame, an upper pressure claw assembly and an upper clamp are arranged on the upper clamping frame, and the lower traction head includes a lower frame, a lower clamping frame which can be translated left and right is arranged above the lower frame, a lower pressure claw assembly and a lower clamp are arranged on the lower clamping frame, the left and right translation of the upper clamping frame can make work space for the lower pressure claw assembly and the lower clamp on the lower clamping frame, and the left and right translation of the lower clamping frame can also make work space for the upper pressure claw assembly and the upper clamp on the upper clamping frame.

[0012] Preferably, the bottom surface height of the upper material clamping frame is higher than the top surface height of the lower frame, and the top surface height of the lower material clamping frame is lower than the bottom surface height of the upper frame.

[0013] Preferably, the upper pressure jaw assembly and the lower pressure jaw assembly are located at the same horizontal height, and the upper clamp and the lower clamp are located at the same horizontal height.

[0014] Preferably, the upper frame is provided with two upper slide rails arranged in parallel along the left-right direction at the bottom, and the upper clamping frame is provided with two groups of upper slide blocks at the top, which are respectively arranged on the two upper slide rails; the lower frame is provided with two lower slide rails arranged in parallel along the left-right direction at the top, and the lower clamping frame is provided with two groups of lower slide blocks at the bottom, which are respectively arranged on the two lower slide rails.

[0015] Preferably, an upper running wheel assembly is provided in the middle part of the front side of the upper frame, and the upper frame is arranged on the upper track through the upper running wheel assembly, and an upper motor and an upper reducer are provided on the front side of the upper frame on one side of the upper track, and the upper pressure claw assembly is located on the other side of the upper track; a lower running wheel assembly is provided in the middle part of the back side of the lower frame, and the lower frame is arranged on the lower track through the lower running wheel assembly, and a lower motor and a lower reducer are provided on the back side of the lower frame on one side of the lower track, and the lower pressure claw assembly is located on the other side of the lower track.

[0016] Preferably, the output end of the upper motor is connected to the upper material clamping frame through a first transmission mechanism;

[0017] Preferably, the first transmission mechanism includes an upper transmission screw rod arranged in the transverse direction, the upper transmission screw rod is installed on the upper frame, a first upper sprocket is provided at the end of the upper transmission screw rod, a second upper sprocket is provided at the output end of the upper motor, a first upper transmission chain is provided between the first upper sprocket wheel and the second upper sprocket wheel, an upper transmission nut is provided on the upper transmission screw rod, and the upper clamping frame is connected to the upper transmission nut.

[0018] Preferably, the output end of the upper reducer is connected to the upper pressing claw assembly through a second transmission mechanism;

[0019] The second transmission mechanism includes an upper sprocket transmission rod arranged in the transverse direction, a third upper sprocket is provided at the end of the upper sprocket transmission rod, a fourth upper sprocket is provided at the output end of the upper reducer, a second upper transmission chain is provided between the third upper sprocket and the fourth upper sprocket, a fifth upper sprocket is provided in the middle of the upper sprocket transmission rod, an upper eccentric shaft is provided in the transverse direction on the upper clamping frame, a sixth upper sprocket is provided on the upper eccentric shaft, a third upper transmission chain is provided between the fifth upper sprocket and the sixth upper sprocket, and the upper pressure claw assembly includes an upper pressure claw rotating shaft, the upper pressure claw rotating shaft is laterally installed on the upper clamping frame, and the upper eccentric shaft is connected to the upper pressure claw rotating shaft through an upper driven arm.

[0020] Preferably, the output end of the lower motor is connected to the lower clamping frame through a third transmission mechanism;

[0021] The third transmission mechanism includes a lower transmission screw rod arranged in the transverse direction, the lower transmission screw rod is installed on the lower frame, a first lower sprocket is provided at the end of the lower transmission screw rod, a second lower sprocket is provided at the output end of the lower motor, a first lower transmission chain is provided between the first lower sprocket and the second lower sprocket, a lower transmission nut is provided on the lower transmission screw rod, and the lower clamping frame is connected to the lower transmission nut.

[0022] Preferably, the output end of the lower reducer is connected to the lower pressing claw assembly through a fourth transmission mechanism;

[0023] The fourth transmission mechanism includes a lower sprocket transmission rod arranged in the transverse direction, a third lower sprocket is provided at the end of the lower sprocket transmission rod, a fourth lower sprocket is provided at the output end of the lower reducer, a second lower transmission chain is provided between the third lower sprocket and the fourth lower sprocket, a fifth lower sprocket is provided in the middle of the lower sprocket transmission rod, a lower eccentric shaft is provided in the transverse direction on the lower clamping frame, a sixth lower sprocket is provided on the lower eccentric shaft, a third lower transmission chain is provided between the fifth lower sprocket and the sixth lower sprocket, the lower pressure claw assembly includes a lower pressure claw rotating shaft, the lower pressure claw rotating shaft is laterally installed on the lower clamping frame, and the lower eccentric shaft is connected to the lower pressure claw rotating shaft through a lower driven arm.

[0024] Preferably, an upper electric box is provided on one side of the upper motor; and a lower electric box is provided on one side of the lower motor.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] 1. In the present invention, an upper traction head and a lower traction head are respectively arranged on the upper track and the lower track, an upper material clamping frame which can be translated left and right is arranged below the upper traction head, and an upper material clamping frame which can be translated left and right is arranged above the lower traction head, and an upper pressing claw assembly and a lower pressing claw assembly are respectively arranged on the upper material clamping frame and the lower material clamping frame. When the upper traction head and the lower traction head are alternately positioned, only the upper material clamping frame of the upper traction head or the lower material clamping frame of the lower traction head needs to be translated laterally to make room for the other traction head, thereby improving work efficiency; at the same time, the previous lifting mechanism or rotating mechanism is cancelled, which greatly simplifies the product structure and reduces the manufacturing cost;

[0027] 2. The claw assembly and driving mechanism (motor and reduction motor) of the upper traction head and the lower traction head of the present invention are respectively located on the left and right sides of the track, so that the center of gravity of the entire traction head is basically located in the track area, effectively avoiding the phenomenon that the center of gravity of the traction head is biased to one side of the track in the past, and greatly improving the stability of the traction head operation and traction efficiency;

[0028] 3. In the present invention, the pressure claw assembly and the driving mechanism (motor and reduction motor) of the upper traction head and the lower traction head are respectively located on the left and right sides of the track. Therefore, it is only necessary to set up the corresponding electrical system on one side of the fixed driving mechanism. The pressure claw assembly area that needs to move left and right is a pure mechanical structure without an electrical system, which greatly reduces the failure rate of the equipment and reduces the subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic structural diagram of a three-head tractor according to the present invention.

[0030] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the middle and upper traction head.

[0031] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the middle upper traction head from another perspective.

[0032] Figure 4 for Figure 3 Side view of.

[0033] Figure 5 for Figure 4 Schematic diagram of the structure of the first transmission mechanism.

[0034] Figure 6 for Figure 4 Schematic diagram of the structure of the second transmission mechanism.

[0035] Figure 7 for Figure 6 Schematic diagram of the connection relationship between the middle upper eccentric shaft and the upper pressure claw rotating shaft.

[0036] Figure 8 for Figure 1 Schematic diagram of the three-dimensional structure of the middle and lower traction head.

[0037] Fig. 9 for Figure 1 Schematic diagram of the three-dimensional structure of the middle and lower traction head from another perspective.

[0038] Fig.10 for Fig. 9 Side view of.

[0039] Fig.11 for Fig.10 Schematic diagram of the structure of the third transmission mechanism.

[0040] Fig.12 for Fig.10 Schematic diagram of the structure of the fourth transmission mechanism.

[0041] in:

[0042] Rack 1

[0043] On track 2

[0044] Lower track 3

[0045] Upper traction head 4

[0046] Upper frame 41

[0047] Upper clamping rack 42

[0048] Upper pressure claw assembly 43

[0049] Upper pressure claw shaft 43.1

[0050] Upper pressure claw 43.2

[0051] Upper clamp 44

[0052] Upper slide rail 45

[0053] Upper slider 46

[0054] Upper traveling wheel assembly 47

[0055] Upper motor frame 48

[0056] Upper reduction frame 49

[0057] Upper motor 410

[0058] Upper reducer 411

[0059] The first transmission mechanism 412

[0060] Upper transmission screw 412.1

[0061] First upper sprocket 412.2

[0062] Second upper sprocket 412.3

[0063] First upper transmission chain 412.4

[0064] Upper drive nut 412.5

[0065] Second transmission mechanism 413

[0066] Upper sprocket drive rod 413.1

[0067] Third upper chain wheel 413.2

[0068] Fourth upper sprocket 413.3

[0069] Second upper transmission chain 413.4

[0070] Fifth upper sprocket 413.5

[0071] Upper eccentric shaft 413.6

[0072] Sixth upper chain wheel 413.7

[0073] The third upper transmission chain 413.8

[0074] Upper follower arm 413.9

[0075] Electric box mounting bracket 414

[0076] Power box 415

[0077] Lower traction head 5

[0078] Lower frame 51

[0079] Lower clamping rack 52

[0080] Pressing claw assembly 53

[0081] Lower pressure claw shaft 53.1

[0082] Pressing claw 53.2

[0083] Lower clamp 54

[0084] Lower rail 55

[0085] Lower slider 56

[0086] Lower traveling wheel assembly 57

[0087] Lower motor frame 58

[0088] Lower reduction frame 59

[0089] Lower motor 510

[0090] Lower reducer 511

[0091] The third transmission mechanism 512

[0092] Lower transmission screw 512.1

[0093] First lower sprocket 512.2

[0094] Second lower sprocket 512.3

[0095] First lower transmission chain 512.4

[0096] Lower drive nut 512.5

[0097] Fourth transmission mechanism 513

[0098] Lower sprocket drive rod 513.1

[0099] The third lower sprocket 513.2

[0100] Fourth lower sprocket 513.3

[0101] Second lower transmission chain 513.4

[0102] Fifth lower sprocket 513.5

[0103] Lower eccentric shaft 513.6

[0104] Sixth lower sprocket 513.7

[0105] The third lower transmission chain 513.8

[0106] Lower follower arm 513.9

[0107] Lower electrical box mounting bracket 514

[0108] Lower electrical box 515. DETAILED DESCRIPTION

[0109] The present invention is further described in detail below with reference to the accompanying drawings.

[0110] like Figures 1 to 12 As shown, a three-head traction machine in this embodiment includes a frame 1, an upper track 2 and a lower track 3 are arranged in parallel on the frame 1, and an upper traction head 4 and a lower traction head 5 are arranged on the upper track 2 and the lower track 3 respectively;

[0111] The upper traction head 4 includes an upper frame 41, an upper clamping frame 42 that can be translated left and right is arranged below the upper frame 41, an upper pressure claw assembly 43 and an upper clamp 44 are arranged on the upper clamping frame 42, and the lower traction head 5 includes a lower frame 51, a lower clamping frame 52 that can be translated left and right is arranged above the lower frame 51, a lower pressure claw assembly 53 and a lower clamp 54 are arranged on the lower clamping frame 52, the bottom surface height of the upper clamping frame 42 is higher than the top surface height of the lower frame 51, and the top surface height of the lower clamping frame 52 is lower than the bottom surface height of the upper frame 41;

[0112] The upper pressing claw assembly 43 and the upper clamp 44 are arranged opposite to each other up and down, and the upper clamp 44 is located below the upper pressing claw assembly 43;

[0113] The lower pressing claw assembly 53 and the lower clamp 54 are arranged opposite to each other up and down, and the lower clamp 54 is located below the lower pressing claw assembly 53.

[0114] The upper pressing jaw assembly 43 and the lower pressing jaw assembly 53 are located at the same level, and the upper clamp 44 and the lower clamp 54 are located at the same level;

[0115] The bottom of the upper frame 41 is provided with two parallel upper slide rails 45 in the left-right direction, and the top of the upper clamping frame 42 is provided with two groups of upper slide blocks 46 in the front and rear directions. The two groups of upper slide blocks 46 in the front and rear directions are respectively arranged on the two upper slide rails 45 in the front and rear directions.

[0116] The top of the lower frame 51 is provided with two parallel lower rails 55 in the left-right direction, and the bottom of the lower clamping frame 52 is provided with two groups of lower sliders 56 in the front and rear, and the two groups of lower sliders 56 in the front and rear are respectively arranged on the two lower rails 55;

[0117] The middle part of the front of the upper frame 41 is provided with left and right groups of upper running wheel assemblies 47, and the upper frame 41 is arranged on the upper track 2 through the left and right groups of upper running wheel assemblies 47, and the front of the upper frame 41 is provided with an upper motor frame 48 and an upper reduction frame 49 on one side of the upper track 2, and the upper motor frame 48 and the upper reduction frame 49 are respectively provided with an upper motor 410 and an upper reduction machine 411, and the upper pressing claw assembly 43 is located on the other side of the upper track 2; the middle part of the back of the lower frame 51 is provided with left and right groups of lower running wheel assemblies 57, and the lower frame 51 is provided on the lower track 3 through the left and right groups of lower running wheel assemblies 57, and the back of the lower frame 51 is provided with a lower motor frame 58 and a lower reduction frame 59 on one side of the lower track 3, and the lower motor frame 58 and the lower reduction frame 59 are respectively provided with a lower motor 510 and a lower reduction machine 511, and the lower pressing claw assembly 53 is located on the other side of the lower track 3;

[0118] The output end of the upper motor 410 is connected to the upper clamping frame 42 through a first transmission mechanism 412;

[0119] The first transmission mechanism 412 comprises an upper transmission screw rod 412.1 arranged in a transverse direction, the upper transmission screw rod 412.1 is installed on the upper frame 41, a first upper sprocket wheel 412.2 is arranged at the end of the upper transmission screw rod 412.1, a second upper sprocket wheel 412.3 is arranged at the output end of the upper motor 410, a first upper transmission chain 412.4 is arranged between the first upper sprocket wheel 412.2 and the second upper sprocket wheel 412.3, an upper transmission nut 412.5 is arranged on the upper transmission screw rod 412.1, and the upper clamping frame 42 is connected to the upper transmission nut 412.5;

[0120] The upper transmission screw rod 412.1 is located between the left and right upper slide rails 45;

[0121] The output end of the upper reducer 411 is connected to the upper pressing claw assembly 43 through the second transmission mechanism 413;

[0122] The second transmission mechanism 413 includes an upper sprocket transmission rod 413.1 arranged in a transverse direction, a third upper sprocket 413.2 is arranged at the end of the upper sprocket transmission rod 413.1, a fourth upper sprocket 413.3 is arranged at the output end of the upper reducer 411, a second upper transmission chain 413.4 is arranged between the third upper sprocket 413.2 and the fourth upper sprocket 413.3, a fifth upper sprocket 413.5 is arranged in the middle of the upper sprocket transmission rod 413.1, and an upper eccentric shaft 413 is arranged in a transverse direction on the upper clamping frame 42. .6, a sixth upper sprocket 413.7 is arranged on the upper eccentric shaft 413.6, a third upper transmission chain 413.8 is arranged between the fifth upper sprocket 413.5 and the sixth upper sprocket 413.7, the upper pressure claw assembly 43 comprises an upper pressure claw rotating shaft 43.1, the upper pressure claw rotating shaft 43.1 is transversely mounted on the upper clamping frame 42, a plurality of upper pressure claws 43.2 are arranged on the upper pressure claw rotating shaft 43.1, and the upper eccentric shaft 413.6 is connected to the upper pressure claw rotating shaft 43.1 through an upper driven arm 413.9;

[0123] An upper electric box mounting frame 414 is provided on one side of the upper motor 410, and an upper electric box 415 is provided on the upper electric box mounting frame 414;

[0124] The output end of the lower motor 510 is connected to the lower clamping frame 52 through a third transmission mechanism 512;

[0125] The third transmission mechanism 512 includes a lower transmission screw rod 512.1 arranged in the transverse direction, the lower transmission screw rod 512.1 is installed on the lower frame 51, a first lower sprocket 512.2 is arranged at the end of the lower transmission screw rod 512.1, a second lower sprocket 512.3 is arranged at the output end of the lower motor 510, a first lower transmission chain 512.4 is arranged between the first lower sprocket 512.2 and the second lower sprocket 512.3, a lower transmission nut 512.5 is arranged on the lower transmission screw rod 512.1, and the lower clamping frame 52 is connected to the lower transmission nut 512.5;

[0126] The lower transmission screw 512.1 is located between the left and right lower rails 55;

[0127] The output end of the lower reducer 511 is connected to the lower pressing claw assembly 53 through the fourth transmission mechanism 513;

[0128] The fourth transmission mechanism 513 includes a lower sprocket transmission rod 513.1 arranged in the transverse direction, a third lower sprocket 513.2 is arranged at the end of the lower sprocket transmission rod 513.1, a fourth lower sprocket 513.3 is arranged at the output end of the lower reducer 511, a second lower transmission chain 513.4 is arranged between the third lower sprocket 513.2 and the fourth lower sprocket 513.3, a fifth lower sprocket 513.5 is arranged in the middle of the lower sprocket transmission rod 513.1, and a lower eccentric shaft 513 is arranged in the transverse direction on the lower clamping frame 52. .6, a sixth lower sprocket 513.7 is arranged on the lower eccentric shaft 513.6, a third lower transmission chain 513.8 is arranged between the fifth lower sprocket 513.5 and the sixth lower sprocket 513.7, the lower pressure claw assembly 53 includes a lower pressure claw rotating shaft 53.1, the lower pressure claw rotating shaft 53.1 is transversely mounted on the lower clamping frame 52, a plurality of lower pressure claws 53.2 are arranged on the lower pressure claw rotating shaft 53.1, and the lower eccentric shaft 513.6 is connected to the lower pressure claw rotating shaft 53.1 through a lower driven arm 513.9;

[0129] A lower electric box mounting frame 514 is disposed on one side of the lower motor 510 , and a lower electric box 515 is disposed on the lower electric box mounting frame 514 .

[0130] Working principle:

[0131] The upper motor of the upper traction head drives the upper ball screw to rotate through the chain transmission method, so that the upper transmission nut drives the upper clamping frame to move left and right to the set position, and the upper pressure claw assembly and the upper clamp form a traction clamping port. The upper reducer drives the upper sprocket transmission rod to rotate through the chain transmission method, and the upper sprocket transmission rod drives the upper eccentric shaft to rotate through the chain transmission method. The upper eccentric shaft drives the upper pressure claw rotating shaft to rotate through the upper driven arm, so that the upper pressure claw on the upper pressure claw rotating shaft is pressed down, and cooperates with the upper clamp to clamp the material. After the system controls the upper traction head frame to move forward and backward along the upper track to the designated position, it is driven by the upper reducer The upper pressure claw assembly is lifted upward to unload material A, and then the system controls the upper frame of the upper traction head to return along the upper track track; in the feeding process of the upper traction head, the same principle is used, the motor on the lower traction head drives the lower pressure claw assembly and the lower clamp to move left and right to the set position, the lower reducer drives the lower pressure claw assembly to press down, and cooperates with the lower clamp to clamp material B, the system controls the lower frame of the lower traction head to move forward and backward along the lower track track to the designated workstation, and drives the lower pressure claw assembly to lift up through the lower reducer to unload material B, and then the system controls the lower frame of the lower traction head to return along the lower track track;

[0132] During the interlacing process of the upper traction head and the lower traction head, the material clamping frame of one of the traction heads moves left and right to make room for the other traction head to feed materials, thereby smoothly completing the alternation of working positions;

[0133] The above operation is repeated to realize continuous pulling action, which greatly improves the production efficiency.

[0134] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A three-head traction machine, characterized in that: It comprises a frame (1), an upper rail (2) and a lower rail (3) are arranged on the frame (1), and an upper traction head (4) and a lower traction head (5) are arranged on the upper rail (2) and the lower rail (3) respectively; The upper traction head (4) comprises an upper frame (41), an upper material clamping frame (42) which can be translated to the left and right is arranged below the upper frame (41), an upper pressure claw assembly (43) and an upper clamp (44) are arranged on the upper material clamping frame (42), and the lower traction head (5) comprises a lower frame (51), a lower material clamping frame (52) which can be translated to the left and right is arranged above the lower frame (51), and a lower pressure claw assembly (53) and a lower clamp (54) are arranged on the lower material clamping frame (52), and the upper material clamping frame (42) can make a working space for the lower pressure claw assembly (53) and the lower clamp (54) on the lower material clamping frame (52) by moving the upper material clamping frame (42) to the left and right, and the lower material clamping frame (52) can also make a working space for the upper pressure claw assembly (43) and the upper clamp (44) on the upper material clamping frame (42) by moving the lower material clamping frame (52) to the left and right; The upper pressure claw assembly (43) and the lower pressure claw assembly (53) are located at the same horizontal height, and the upper clamp (44) and the lower clamp (54) are located at the same horizontal height; An upper running wheel assembly (47) is arranged in the middle of the front of the upper frame (41), and the upper frame (41) is arranged on the upper track (2) through the upper running wheel assembly (47); an upper motor (410) and an upper reducer (411) are arranged on the front of the upper frame (41) on one side of the upper track (2), and the upper pressing claw assembly (43) is located on the other side of the upper track (2); a lower running wheel assembly (57) is arranged in the middle of the back of the lower frame (51), and the lower frame (51) is arranged on the lower track (3) through the lower running wheel assembly (57); a lower motor (510) and a lower reducer (511) are arranged on the back of the lower frame (51) on one side of the lower track (3), and the lower pressing claw assembly (53) is located on the other side of the lower track (3); The output end of the upper motor (410) is connected to the upper material clamping frame (42) via a first transmission mechanism (412); The first transmission mechanism (412) comprises an upper transmission screw (412.1) arranged in a transverse direction, the upper transmission screw (412.1) being mounted on the upper frame (41), a first upper sprocket (412.2) being arranged at the end of the upper transmission screw (412.1), a second upper sprocket (412.3) being arranged at the output end of the upper motor (410), a first upper transmission chain (412.4) being arranged between the first upper sprocket (412.2) and the second upper sprocket (412.3), an upper transmission nut (412.5) being arranged on the upper transmission screw (412.1), and the upper material clamping frame (42) being connected to the upper transmission nut (412.5); The output end of the upper reducer (411) is connected to the upper pressing claw assembly (43) via a second transmission mechanism (413); The second transmission mechanism (413) comprises an upper sprocket transmission rod (413.1) arranged in a transverse direction, a third upper sprocket (413.2) being arranged at the end of the upper sprocket transmission rod (413.1), a fourth upper sprocket (413.3) being arranged at the output end of the upper reducer (411), a second upper transmission chain (413.4) being arranged between the third upper sprocket (413.2) and the fourth upper sprocket (413.3), a fifth upper sprocket (413.5) being arranged in the middle of the upper sprocket transmission rod (413.1), and a plurality of upper sprockets (413.6) being arranged at the upper end of the upper material clamping frame (42). An upper eccentric shaft (413.6) is arranged on the upper eccentric shaft (413.6), a sixth upper sprocket (413.7) is arranged on the upper eccentric shaft (413.6), a third upper transmission chain (413.8) is arranged between the fifth upper sprocket (413.5) and the sixth upper sprocket (413.7), the upper pressure claw assembly (43) comprises an upper pressure claw rotating shaft (43.1), the upper pressure claw rotating shaft (43.1) is transversely mounted on the upper clamping frame (42), and the upper eccentric shaft (413.6) and the upper pressure claw rotating shaft (43.1) are connected via an upper driven arm (413.9).

2. A three-head traction machine according to claim 1, characterized in that: The bottom surface height of the upper material clamping frame (42) is higher than the top surface height of the lower frame (51), and the top surface height of the lower material clamping frame (52) is lower than the bottom surface height of the upper frame (41).

3. A three-head traction machine according to claim 1, characterized in that: The bottom of the upper frame (41) is provided with two upper slide rails (45) arranged in parallel in the left-right direction, and the top of the upper clamping frame (42) is provided with two groups of upper slide blocks (46) in the front and rear directions, and the two groups of upper slide blocks (46) are respectively arranged on the two upper slide rails (45); the top of the lower frame (51) is provided with two lower slide rails (55) arranged in parallel in the left-right direction, and the bottom of the lower clamping frame (52) is provided with two groups of lower slide blocks (56) in the front and rear directions, and the two groups of lower slide blocks (56) are respectively arranged on the two lower slide rails (55).

4. A three-head traction machine according to claim 1, characterized in that: The output end of the lower motor (510) is connected to the lower material clamping frame (52) via a third transmission mechanism (512); The third transmission mechanism (512) comprises a lower transmission screw (512.1) arranged in a transverse direction, the lower transmission screw (512.1) being mounted on the lower frame (51), a first lower sprocket (512.2) being provided at the end of the lower transmission screw (512.1), a second lower sprocket (512.3) being provided at the output end of the lower motor (510), a first lower transmission chain (512.4) being provided between the first lower sprocket (512.2) and the second lower sprocket (512.3), a lower transmission nut (512.5) being provided on the lower transmission screw (512.1), and the lower clamping frame (52) being connected to the lower transmission nut (512.5).

5. The three-head traction machine according to claim 1, characterized in that: The output end of the lower reducer (511) is connected to the lower pressing claw assembly (53) via a fourth transmission mechanism (513); The fourth transmission mechanism (513) comprises a lower sprocket transmission rod (513.1) arranged in a transverse direction, a third lower sprocket (513.2) being arranged at the end of the lower sprocket transmission rod (513.1), a fourth lower sprocket (513.3) being arranged at the output end of the lower reducer (511), a second lower transmission chain (513.4) being arranged between the third lower sprocket (513.2) and the fourth lower sprocket (513.3), a fifth lower sprocket (513.5) being arranged in the middle of the lower sprocket transmission rod (513.1), and a lower material clamping frame (52) having a lower sprocket (513.6) and a lower sprocket (513.7) being arranged at the upper end of the lower sprocket transmission rod (513.1). A lower eccentric shaft (513.6) is arranged in the direction of the bottom surface of the lower eccentric shaft (513.6), a sixth lower sprocket (513.7) is arranged on the lower eccentric shaft (513.6), a third lower transmission chain (513.8) is arranged between the fifth lower sprocket (513.5) and the sixth lower sprocket (513.7), the lower pressure claw assembly (53) comprises a lower pressure claw rotating shaft (53.1), the lower pressure claw rotating shaft (53.1) is transversely mounted on the lower clamping frame (52), and the lower eccentric shaft (513.6) and the lower pressure claw rotating shaft (53.1) are connected via a lower driven arm (513.9).

6. A three-head traction machine according to claim 1, characterized in that: An upper electrical box (415) is provided on one side of the upper motor (410); and a lower electrical box (515) is provided on one side of the lower motor (510).

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