High efficiency leather processing overloading drum

Abstract

The present application relates to leather processing equipment technical field, specifically to a kind of high efficiency leather processing overload drum, it is characterized by: including rotatable installation on mounting table drum body and for driving drum body rotation first rotation driving mechanism, four mutually perpendicular arrangement and not pointing to the baffle of shaft center is fixedly arranged in drum body, four beating device are provided on drum body, beating device includes flexible hammer head assembly and beating drive assembly, the outer peripheral wall of drum body is provided with multiple installation holes spaced along its axial direction, multiple installation holes are all installed with flexible hammer head assembly, beating drive assembly is located outside drum body and is used to drive multiple flexible hammer head assembly reciprocating movement to realize the beating action towards corresponding baffle side.The present application can enrich the mechanical action that can be realized, and have the mechanical action of beating and beating, can further improve the action intensity of skin, it is beneficial to realize high efficiency of material absorption speed and absorption effect.

Description

Technical Field

[0001] This invention relates to the field of leather processing equipment technology, specifically to a high-efficiency leather processing overload drum. Background Technology

[0002] The drum is one of the important pieces of equipment in the leather processing industry. It generally consists of a drum body and a transmission device. It usually includes overload drums and traditional drums. Compared with traditional drums, overload drums can save on chemicals, energy consumption and water. The structure of an overload drum is generally four mutually perpendicular baffles. The baffles do not point to the axis, but are offset from the axis by about 30 degrees, forming a V-shaped groove with the drum wall. When rotating, the baffles can lift the hide and bath liquid together to the 12 o'clock position. The hide then slowly slides down and hits the lower baffles. Therefore, the mechanical action of this type of overload drum is achieved by this high drop impact. However, the mechanical action it achieves is relatively simple and does not have other types of mechanical action, so it cannot further improve the intensity of action. It is not conducive to achieving high-efficiency chemical absorption speed and absorption effect. In view of this, this problem has been studied in depth, hence the emergence of this case. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a high-efficiency leather processing overload drum that can enrich the mechanical action that can be achieved, and has the mechanical action of pounding and beating, which can further improve the strength of action on leather, and is conducive to achieving high efficiency in chemical absorption speed and absorption effect.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-efficiency leather processing overload drum, comprising a drum body rotatably mounted on a mounting platform and a first rotation drive mechanism for driving the drum body to rotate. Four baffles arranged perpendicularly to each other and not pointing towards the axis are fixedly provided inside the drum body. Four hammering devices are provided on the drum body corresponding to the baffles one by one. The hammering device includes a flexible hammer head assembly and a hammering drive assembly. Multiple mounting holes are provided on the outer peripheral wall of the drum body at intervals along its axial direction. Flexible hammer head assemblies are installed in the multiple mounting holes. The hammering drive assembly is located on the outside of the drum body and is used to drive the multiple flexible hammer head assemblies to reciprocate to achieve a hammering action towards the corresponding baffle side.

[0005] Furthermore, the flexible hammer assembly includes a flexible hammer sleeve, a hammer rod, a pressure plate, and an annular sealing gasket. The flexible hammer sleeve has a cavity with an open end and a closed end at its two ends, respectively. The flexible hammer sleeve is adapted to the mounting hole and is fitted into the mounting hole with the open end of the flexible hammer sleeve facing outward. An annular mounting gasket is fixedly provided on the edge of the open end of the flexible hammer sleeve. The annular sealing gasket, the annular mounting gasket, and the pressure plate are stacked sequentially from the inside to the outside and fixedly connected to the drum body by a bolt assembly. One end of the hammer rod is fixedly connected to the bottom surface of the cavity of the flexible hammer sleeve, and the other end of the hammer rod extends outward and passes through the pressure plate and slides with the pressure plate.

[0006] Furthermore, the hammer rod is cylindrical, and the pressure plate has a through hole in the center. A sliding sleeve that matches the hammer rod is fixedly installed in the through hole, and the hammer rod passes through the sliding sleeve.

[0007] Furthermore, the hammering drive assembly includes a rotating shaft, a drive cam, an upper roller, a lower roller, a roller seat, and a second rotation drive mechanism. Both ends of the rotating shaft are provided with support seats that are rotatably engaged with each other. The support seats are fixedly mounted on the outer peripheral surface of the drum body. The second rotation drive mechanism is used to drive the rotating shaft to rotate. The drive cam is fixedly mounted on the rotating shaft. There are multiple drive cams that are spaced apart along the axial direction of the rotating shaft. An annular flange is fixedly provided on one side surface of the drive cam. The roller seat is fixedly mounted on one end of the hammer rod. The roller seat is provided with an upper roller and a lower roller that are rotatable and spaced apart vertically. The annular flange is sandwiched between the upper roller and the lower roller.

[0008] Furthermore, the drive cam is a triangular cam, and the motion trajectories of two adjacent drive cams are complementary in height.

[0009] Furthermore, the second rotation drive mechanism includes two moving internal gears and two fixed external gear rings arranged in a one-to-one correspondence. The two moving internal gears are respectively fixedly installed at both ends of the rotating shaft, and the two fixed external gear rings are arranged coaxially with the drum body and fixedly installed on the mounting platform. The moving internal gears are located inside the corresponding fixed external gear rings and the two mesh with each other for transmission.

[0010] Furthermore, the baffle includes a fixed plate and a flipping plate. One end of the fixed plate is fixedly connected to the drum body, and the other end of the fixed plate is hinged to one end of the flipping plate. Both ends of the drum body are provided with flipping drive components for driving the flipping plate to flip.

[0011] Furthermore, the tilting drive assembly includes a guide roller, a connecting rod, an inner swing rod, a connecting shaft, an outer swing rod, and an annular guide plate. The connecting shaft is rotatably mounted on the end wall of the drum body via bearings. Sealing components are provided on both the inner and outer sides of the bearings on the end wall of the drum body. One end of the connecting shaft is fixedly connected to one end of the inner swing rod, and the other end of the inner swing rod is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the tilting plate. The other end of the connecting shaft is fixedly connected to one end of the outer swing rod, and a rotatable guide roller is installed on the other end of the outer swing rod. The annular guide plate is fixedly mounted on the mounting platform. The annular guide plate has an annular guide groove on one end face near the drum body that is adapted to the guide roller. The guide roller is embedded in the annular guide groove and the two roll in cooperation. When the guide roller rolls along the annular guide groove, it can drive the tilting plate to tilt.

[0012] Furthermore, the annular guide groove includes a large arc segment, an upper arc transition segment, a small arc segment, and a lower arc transition segment connected end to end. When the guide roller rolls in the large arc segment, it can cause the corresponding baffle to rotate from a low position to a high position inside the drum body. When the guide roller rolls in the upper arc transition segment, it can cause the flipping plate of the baffle located at a high position inside the drum body to flip towards the side closer to the central axis of the drum body. When the guide roller rolls in the small arc segment, it can cause the corresponding baffle to rotate from a high position to a low position inside the drum body. When the guide roller rolls in the lower arc transition segment, it can cause the flipping plate of the baffle located at a low position inside the drum body to flip away from the central axis of the drum body.

[0013] Furthermore, the large arc segment is wavy. When the guide roller rolls along the wavy large arc segment, it can drive the corresponding baffle to rotate continuously and reciprocate as it rotates from a low position to a high position inside the drum.

[0014] As can be seen from the above description, the high-efficiency leather processing overload drum provided by the present invention has the following beneficial effects:

[0015] 1. Based on the mechanical action of lifting the leather and bath liquid by the baffle to achieve high-drop impact, the hammering drive component drives multiple flexible hammer head components to reciprocate. During the lifting process, the leather in the V-shaped groove between the baffle and the inner wall of the drum can be continuously and repeatedly hammered, thereby enriching the mechanical action that can be achieved. This allows the overload drum to have both impact and hammering mechanical action, which can further enhance the strength of the action on the leather, which is conducive to achieving high-efficiency chemical absorption speed and absorption effect, and further achieves the effect of saving chemical materials.

[0016] Second, by combining the fixed plate and the flipping plate, the overall height of the baffle can be increased, thus enabling the lifting of more leather at once. During the lifting process, the leather is less likely to slip or fall, which would affect the overall impact mechanism. This effectively ensures that the leather is lifted to the highest position. Then, driven by the flipping drive component, the flipping plate flips downward, allowing the leather in the V-shaped groove between the baffle and the inner wall of the drum to slide smoothly and easily, thereby maximizing the impact effect of the high drop. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a high-efficiency leather processing overload drum according to the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of a high-efficiency leather processing overload drum according to the present invention.

[0019] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0020] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.

[0021] Figure 5 This is a schematic diagram of the structure of the flip drive component.

[0022] Figure 6 This is a schematic diagram of the annular guide plate.

[0023] In the diagram: 1-Mounting platform; 2-Drum body; 3-First rotation drive mechanism; 4-Baffle; 41-Fixed plate; 42-Flipping plate; 5-Hammering device; 51-Flexible hammer head assembly; 511-Flexible hammer sleeve; 5111-Cavity; 5112-Annular mounting pad; 512-Hammer rod; 513-Pressure plate; 514-Annular sealing gasket; 515-Sliding sleeve; 52-Hammering drive assembly; 521-Rotating shaft; 522-Drive cam; 5221-Annular flange; 523-Upper roller; 524 525-Lower roller; 526-Roller seat; 527-Second rotation drive mechanism; 5261-Moving internal gear; 5262-Fixed external gear ring; 528-Support seat; 6-Tilting drive assembly; 61-Guide roller; 62-Connecting rod; 63-Inner swing rod; 64-Connecting shaft; 65-Outer swing rod; 66-Annular guide plate; 661-Annular guide groove; 6611-Large arc segment; 6612-Upper arc transition segment; 6613-Small arc segment; 6614-Lower arc transition segment; 67-Sealing assembly. Detailed Implementation

[0024] The present invention will be further described below through specific embodiments.

[0025] like Figures 1 to 6 As shown, the high-efficiency leather processing overload drum of the present invention includes a drum body 2 rotatably mounted on a mounting platform 1 and a first rotation drive mechanism 3 for driving the drum body 2 to rotate. Four baffles 4 are fixedly arranged perpendicularly to each other and not pointing towards the axis inside the drum body 2. Four hammering devices 5 are provided on the drum body 2, each corresponding to one of the baffles 4. Each hammering device 5 includes a flexible hammer head assembly 51 and a hammering drive assembly 52. ​​The outer peripheral wall of the drum body 2 is provided with a plurality of mounting holes spaced apart along its axial direction. The flexible hammer head assembly 51 is installed in each of the plurality of mounting holes. The hammering drive assembly 52 is located on the outside of the drum body 2 and is used to drive the plurality of flexible hammer head assemblies 51 to reciprocate to achieve a hammering action toward the side corresponding to the baffle 4.

[0026] Based on the mechanical action of the baffle 4 lifting the hide and bath liquid to achieve high-drop impact, the hammering drive assembly 52 drives multiple flexible hammer head assemblies 51 to reciprocate. During the lifting process, the hide located in the V-shaped groove between the baffle 4 and the inner wall of the drum body 2 can be continuously and repeatedly hammered, thereby further enriching the mechanical action that can be achieved. This allows the overload drum to have both impact and hammering mechanical actions, which can further enhance the strength of the action on the hide, which is conducive to achieving high-efficiency chemical absorption speed and absorption effect, and further achieves the effect of saving chemical materials.

[0027] The first rotation drive mechanism 3 includes a drive motor, a belt drive assembly, a reducer, a drive gear, and a driven gear ring. The drive motor is fixedly mounted on a motor base, which is fixedly mounted on the mounting platform 1. The motor shaft of the drive motor is connected to the input shaft of the reducer via the belt drive assembly. The output shaft of the reducer is fixedly mounted with the drive gear. The driven gear ring is fixedly mounted on one end face of the drum body 2. The drive gear is located inside the driven gear ring and meshes with it, thereby facilitating the rotation of the drum body 2 by the drive motor. Correspondingly, the belt drive assembly includes a drive pulley, a transmission belt, and a driven pulley. The drive pulley is fixedly mounted on the motor shaft of the drive motor, and the driven pulley is fixedly mounted on the input shaft of the reducer. The drive pulley is connected to the driven pulley via the transmission belt.

[0028] The flexible hammer assembly 51 includes a flexible hammer sleeve 511, a hammer rod 512, a pressure plate 513, and an annular sealing gasket 514. The flexible hammer sleeve 511 has a cavity 5111 with an open end and a closed end at its two ends. The flexible hammer sleeve 511 is adapted to the mounting hole and fitted inside it, with the open end of the flexible hammer sleeve 511 facing outwards. An annular mounting gasket 5112 is fixedly provided along the edge of the open end of the flexible hammer sleeve 511. The annular sealing gasket 514, the annular mounting gasket 5112, and the pressure plate 513 are stacked sequentially from the inside out and connected to the mounting hole by bolts. The drum body 2 is fixedly connected. One end of the hammer rod 512 is fixedly connected to the bottom surface of the cavity 5111 of the flexible hammer sleeve 511. The other end of the hammer rod 512 extends outward and passes through the pressure plate 513 and slides with the pressure plate 513. Through the setting of the annular sealing gasket 514 and the flexible hammer sleeve 511, the sealing of the connection between the flexible hammer head assembly 51 and the drum body 2 can be effectively ensured during the hammering process. By controlling the movement of the hammer rod 512, the hammering action can be realized. During the movement of the hammer rod 512, the flexible hammer sleeve 511 can adaptably bend flexibly.

[0029] Preferably, the flexible hammer sleeve 511 is a highly wear-resistant rubber sleeve. In addition, an annular sealing gasket 514 is also provided between the annular mounting pad 5112 and the pressure plate 513. Furthermore, a hammer plate that is adapted to the bottom surface of the cavity 5111 is fixedly provided at the end of the hammer rod 512 to effectively ensure the hammering area of ​​the flexible hammer head assembly 51.

[0030] Preferably, the hammer rod 512 is cylindrical, and the pressure plate 513 has a through hole in the center. A sliding sleeve 515 adapted to the hammer rod 512 is fixedly installed in the through hole. The hammer rod 512 passes through the sliding sleeve 515, thereby guiding the movement of the hammer rod 512 and effectively ensuring the smoothness and stability of the movement of the hammer rod 512.

[0031] The hammering drive assembly 52 includes a rotating shaft 521, a drive cam 522, an upper roller 523, a lower roller 524, a roller seat 525, and a second rotation drive mechanism 526. Both ends of the rotating shaft 521 are provided with support seats 527, which are rotatably engaged with each other. The support seats 527 are fixedly mounted on the outer circumferential surface of the drum body 2. The second rotation drive mechanism 526 drives the rotating shaft 521 to rotate. The drive cam 522 is fixedly mounted on the rotating shaft 521. Multiple drive cams 522 are spaced apart along the axial direction of the rotating shaft 521. An annular flange 5221 is fixedly provided on one side surface of each drive cam 522. The roller seat 525 is fixedly mounted on one end of the hammer rod 512. The shaft 521 is equipped with an upper roller 523 and a lower roller 524 that are rotatable and spaced apart vertically. The annular flange 5221 is sandwiched between the upper roller 523 and the lower roller 524. Thus, when the second rotation drive mechanism 526 drives the shaft 521 to rotate, it can drive multiple drive cams 522 on the shaft 521 to rotate synchronously. At the same time, through the rolling cooperation between the upper roller 523 and the lower roller 524 and the annular flange 5221, during the rotation of the drive cam 522, and with the guiding effect of the sliding sleeve 515 on the hammer rod 512, the hammer rod 512 can be driven to move relative to the sliding sleeve 515 to realize the hammering action.

[0032] Preferably, the drive cam 522 is a triangular cam. As a result, the drive cam 522 can drive the hammer rod 512 to move up and down three times in one rotation cycle, which helps to further improve the overall hammering speed. The movement trajectories of two adjacent drive cams 522 are complementary in height. In this way, when one drive cam 522 moves to a high point, the other drive cam 522 next to it moves to a low point. Moreover, the rotation directions of multiple drive cams 522 are all the same. When they are superimposed, dynamic balance can be effectively achieved during operation, and the load is balanced, which effectively ensures the smoothness of operation. At the same time, it can realize the back-and-forth hammering action of two adjacent hammer rods 512.

[0033] The second rotation drive mechanism 526 includes two moving internal gears 5261 and two fixed external gear rings 5262 arranged in a one-to-one correspondence. The two moving internal gears 5261 are respectively fixedly installed at both ends of the rotating shaft 521. The two fixed external gear rings 5262 are coaxially arranged with the drum body 2 and fixedly installed on the mounting platform 1. The moving internal gears 5261 are located inside the corresponding fixed external gear rings 5262 and mesh with each other. In this way, without additional power input, the rotation of the drum body 2 can drive the moving internal gears 5261 to revolve around the central axis of the drum body 2. At the same time, through the meshing and transmission between the moving internal gears 5261 and the fixed external gear rings 5262, and since the fixed external gear rings 5262 are fixedly installed, the moving internal gears 5261 can be driven to rotate, thereby driving the rotating shaft 521 to rotate.

[0034] The baffle 4 includes a fixed plate 41 and a flipping plate 42. One end of the fixed plate 41 is fixedly connected to the drum body 2, and the other end of the fixed plate 41 is hinged to one end of the flipping plate 42. Both ends of the drum body 2 are provided with flipping drive components 6 for driving the flipping plate 42 to flip. By combining the fixed plate 41 and the flipping plate 42, the overall height of the baffle 4 can be made larger, thereby enabling the lifting of more leather at once. During the process of lifting the leather by the baffle 4, the leather is less likely to slip or fall, so as to avoid affecting the overall impact mechanical action. It also effectively ensures that the leather is smoothly lifted to the highest position. Then, driven by the flipping drive component 6, the flipping plate 42 flips downward, so that the leather in the V-shaped groove between the baffle 4 and the inner wall of the drum body 2 can smoothly and easily slide down, thereby maximizing the high-drop impact effect.

[0035] The flipping drive assembly 6 includes a guide roller 61, a connecting rod 62, an inner swing rod 63, a connecting shaft 64, an outer swing rod 65, and an annular guide plate 66. The connecting shaft 64 is rotatably mounted on the end wall of the drum body 2 via bearings. Sealing assemblies 67 are provided on both the inner and outer sides of the bearings on the end wall of the drum body 2. One end of the connecting shaft 64 is fixedly connected to one end of the inner swing rod 63, and the other end of the inner swing rod 63 is hinged to one end of the connecting rod 62. The other end of the connecting rod 62 is hinged to the flipping plate 42. The other end of the connecting shaft 64 is fixedly connected to one end of the outer swing rod 65, and the other end of the outer swing rod 65 is equipped with the rotatable guide roller 61. The annular guide plate 66 is fixedly mounted on the mounting platform 1. The annular guide plate 66 has an annular guide groove 661 on one end face near the drum body 2, which is adapted to the guide roller 61. The guide roller 61 is embedded in the annular guide groove 661 and the two roll in cooperation. When the guide roller 61 rolls along the annular guide groove 661, it can drive the flip plate 42 to flip. With this structure, when the guide roller 61 rolls in the annular guide groove 661 as the drum body 2 rotates, it can drive the outer swing rod 65 to swing, thereby causing the inner swing rod 63 to swing synchronously. Through the linkage of the connecting rod 62, the flip plate 42 can be driven to flip without additional power input, relying on the rotation of the drum body 2.

[0036] Correspondingly, the annular guide groove 661 includes a large arc segment 6611, an upper arc transition segment 6612, a small arc segment 6613, and a lower arc transition segment 6614 connected end to end. When the guide roller 61 rolls in the large arc segment 6611, the corresponding baffle 4 can rotate from a low position to a high position inside the drum body 2. When the guide roller 61 rolls in the upper arc transition segment 6612, the flipping plate 42 of the baffle 4 located at a high position inside the drum body 2 can flip towards the side closer to the central axis of the drum body 2. This allows the flipping plate 42, which is in a high position, to flip downwards, so that the leather in the V-shaped groove between the baffle 4 and the inner wall of the drum body 2 can slide down smoothly and easily. When the guide roller 61 rolls in the small arc segment 6613, the corresponding baffle 4 can rotate and descend from the high position to the low position in the drum body 2. When the guide roller 61 rolls in the lower arc transition segment 6614, the flipping plate 42 of the baffle 4, which is located in the low position in the drum body 2, can flip away from the central axis of the drum body 2.

[0037] Preferably, the large arc segment 6611 is wavy. When the guide roller 61 rolls along the wavy large arc segment 6611, it can drive the flipping plate 42 corresponding to the baffle 4 to continuously reciprocate as it rotates from a low position to a high position inside the drum body 2. Thus, during the process of the baffle 4 lifting the leather, by driving the reciprocating flipping of the flipping plate 42, the leather in the V-shaped groove between the baffle 4 and the inner wall of the drum body 2 can be continuously and repeatedly squeezed, so as to further enrich the mechanical action that can be achieved, so that the overload drum also has the mechanical action of squeezing, and during the squeezing process, it is beneficial to enhance the hammering action of the flexible hammer assembly 51 on the leather, so as to further enhance the strength of the action on the leather, and further facilitate the realization of high-efficiency chemical absorption speed and absorption effect.

[0038] The sealing assembly 67 includes an annular sealing plate, a rotary sealing ring, and an O-ring. The annular sealing plate is fixedly installed on the end wall of the drum body 2. The O-ring is provided between the outer circumferential surface of the annular sealing plate and the end wall of the drum body 2. Preferably, there are multiple O-rings. The rotary sealing ring is provided between the inner circumferential surface of the annular sealing plate and the connecting shaft 64. In this way, the sealing performance is effectively ensured when the connecting shaft 64 is connected to the drum body 2.

[0039] The above are merely some specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A high-efficiency leather processing overload drum, comprising a drum body rotatably mounted on a mounting platform and a first rotation drive mechanism for driving the drum body to rotate, wherein four mutually perpendicular baffles not pointing towards an axis are fixedly disposed inside the drum body, characterized in that: The drum body is provided with four hammering devices corresponding to the baffles. Each hammering device includes a flexible hammer head assembly and a hammering drive assembly. The outer peripheral wall of the drum body is provided with multiple mounting holes spaced apart along its axial direction. Each of the multiple mounting holes is equipped with a flexible hammer head assembly. The hammering drive assembly is located on the outside of the drum body and is used to drive the multiple flexible hammer head assemblies to reciprocate to achieve a hammering action towards the side corresponding to the baffle. The baffle includes a fixed plate and a flipping plate. One end of the fixed plate is fixedly connected to the drum body, and the other end of the fixed plate is hinged to one end of the flipping plate. Both ends of the drum body are provided with flipping drive assemblies for driving the flipping plate to flip.

2. The high-efficiency leather processing overload drum according to claim 1, characterized in that: The flexible hammer assembly includes a flexible hammer sleeve, a hammer rod, a pressure plate, and an annular sealing gasket. The flexible hammer sleeve has a cavity with an open end and a closed end at its two ends. The flexible hammer sleeve is adapted to the mounting hole and is fitted into the mounting hole with the open end of the flexible hammer sleeve facing outward. An annular mounting gasket is fixedly provided along the edge of the open end of the flexible hammer sleeve. The annular sealing gasket, the annular mounting gasket, and the pressure plate are stacked sequentially from the inside to the outside and fixedly connected to the drum body by a bolt assembly. One end of the hammer rod is fixedly connected to the bottom surface of the cavity of the flexible hammer sleeve, and the other end of the hammer rod extends outward and passes through the pressure plate and slides with the pressure plate.

3. The high-efficiency leather processing overload drum according to claim 2, characterized in that: The hammer rod is cylindrical, and the pressure plate has a through hole in the center. A sliding sleeve adapted to the hammer rod is fixedly installed in the through hole, and the hammer rod passes through the sliding sleeve.

4. The high-efficiency leather processing overload drum according to claim 2, characterized in that: The hammering drive assembly includes a rotating shaft, a drive cam, an upper roller, a lower roller, a roller seat, and a second rotation drive mechanism. Both ends of the rotating shaft are provided with support seats that are rotatably engaged with each other. The support seats are fixedly mounted on the outer circumferential surface of the drum body. The second rotation drive mechanism is used to drive the rotating shaft to rotate. The drive cam is fixedly mounted on the rotating shaft. Multiple drive cams are spaced apart along the axial direction of the rotating shaft. An annular flange is fixedly provided on one side surface of each drive cam. The roller seat is fixedly mounted on one end of the hammer rod. The roller seat has an upper roller and a lower roller that are rotatable and spaced apart vertically. The annular flange is sandwiched between the upper roller and the lower roller.

5. The high-efficiency leather processing overload drum according to claim 4, characterized in that: The drive cam is a triangular cam, and the motion trajectories of two adjacent drive cams are complementary in height.

6. The high-efficiency leather processing overload drum according to claim 4, characterized in that: The second rotation drive mechanism includes two moving internal gears and two fixed external gear rings arranged in a one-to-one correspondence. The two moving internal gears are respectively fixedly installed at both ends of the rotating shaft. The two fixed external gear rings are coaxially arranged with the drum body and fixedly installed on the mounting platform. The moving internal gears are located inside the corresponding fixed external gear rings and the two mesh with each other for transmission.

7. The high-efficiency leather processing overload drum according to claim 1, characterized in that: The flipping drive assembly includes a guide roller, a connecting rod, an inner swing rod, a connecting shaft, an outer swing rod, and an annular guide plate. The connecting shaft is rotatably mounted on the end wall of the drum body via a bearing. Sealing assemblies are provided on both the inner and outer sides of the bearing on the end wall of the drum body. One end of the connecting shaft is fixedly connected to one end of the inner swing rod, and the other end of the inner swing rod is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the flipping plate. The other end of the connecting shaft is fixedly connected to one end of the outer swing rod. A rotatable guide roller is mounted on the other end of the outer swing rod. The annular guide plate is fixedly mounted on the mounting platform. The annular guide plate has an annular guide groove on one end face near the drum body that matches the guide roller. The guide roller is embedded in the annular guide groove, and the two roll in cooperation. When the guide roller rolls along the annular guide groove, it can drive the flipping plate to flip.

8. The high-efficiency leather processing overload drum according to claim 7, characterized in that: The annular guide groove includes a large arc segment, an upper arc transition segment, a small arc segment, and a lower arc transition segment connected end to end. When the guide roller rolls in the large arc segment, the corresponding baffle rotates from a low position to a high position inside the drum body. When the guide roller rolls in the upper arc transition segment, the flipping plate of the baffle located at a high position inside the drum body flips towards the side closer to the central axis of the drum body. When the guide roller rolls in the small arc segment, the corresponding baffle rotates from a high position to a low position inside the drum body. When the guide roller rolls in the lower arc transition segment, the flipping plate of the baffle located at a low position inside the drum body flips away from the central axis of the drum body.

9. The high-efficiency leather processing overload drum according to claim 8, characterized in that: The large arc segment is wavy. When the guide roller rolls along the wavy large arc segment, it can drive the flipping plate corresponding to the baffle to continuously reciprocate and flip as it rotates from a low position to a high position inside the drum.

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