Combined driving component of belt feeding type packaging machine

Abstract

The invention discloses a combined driving component of a bag feeding type packaging machine. The combined driving component comprises a box body, and a rotatable indexing driving sleeve and a lifting shaft capable of being lifted in an inner hole of the indexing driving sleeve are arranged in the box body; the indexing transmission assembly is used for driving the indexing driving sleeve to rotate intermittently, and the lifting back-and-forth transmission assembly is used for driving the lifting shaft to rotate back and forth and lift. The indexing transmission assembly and the lifting back-and-forth transmission assembly are connected through a transmission mechanism and driven by the same motor. The indexing transmission assembly comprises an indexing cam and a spiral groove; the lifting back-and-forth transmission assembly comprises a swing cam (driving back-and-forth) and a warping plate (driving lifting). Indexing rotary table rotation and mechanical arm driving are integrated, single-motor driving is adopted, the structure is compact, assembling is simplified, cost is reduced, and stability and reliability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of packaging machinery, in particular to a combined driving component for a bag feeding packaging machine. BACKGROUND

[0002] The bag feeding packaging machine generally comprises a frame, an indexing turntable arranged on the frame, and a mechanical arm cooperating with the indexing turntable. The indexing turntable rotates intermittently at certain angle intervals, and the bag clamping mechanism at the edge thereof sequentially passes through the bag feeding, bag opening, material adding, vacuumizing and bag sealing, and finished product moving out workstations.

[0003] In the prior art, in order to move the packaging bag from the bag opening workstation to the material adding workstation after the bag is opened, a mechanical arm is usually arranged to move back and forth between the two workstations. The back and forth driving structure of the mechanical arm and the rotating driving structure of the indexing turntable are independent, for example, different motors or complex transmission mechanisms are used to realize the driving. Such independent driving structure leads to complex structure of the whole machine, complicated assembly process, high cost, and poor stability and reliability, and is not convenient to maintain. SUMMARY

[0004] To solve the above problems, the purpose of the present application is to overcome the defects of complex structure, complicated assembly, high cost and poor stability caused by the independent setting of the rotating driving structure of the indexing turntable and the back and forth driving structure of the mechanical arm in the existing bag feeding packaging machine, and to provide a combined driving component for a bag feeding packaging machine, which is compact in structure, integrated in driving, capable of simplifying assembly, reducing cost and improving stability.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a combined driving component for a bag feeding packaging machine, comprising a box body, a indexing driving sleeve rotatable arranged in the box body, and a lifting shaft arranged in the inner hole of the indexing driving sleeve in a lifting and sliding manner; a indexing transmission assembly for driving the indexing driving sleeve to rotate intermittently at a set angle, and a lifting and back and forth transmission assembly for driving the lifting shaft to rotate back and forth and lift are arranged in the box body; the indexing transmission assembly and the lifting and back and forth transmission assembly are connected through a transmission mechanism, and driving force is provided by the same motor.

[0006] Further, the indexing transmission assembly comprises a sleeve disc arranged on the indexing driving sleeve, a plurality of indexing bearings are mounted on the peripheral wall of the sleeve disc; a indexing cam is arranged corresponding to each indexing bearing, a spiral groove is formed in the peripheral wall of the indexing cam, the spiral groove is provided with an inlet at one end face of the indexing cam and an outlet at the other end face, and the indexing bearing is arranged in the spiral groove.

[0007] Furthermore, the lifting and reciprocating transmission assembly includes a reciprocating motion drive structure and a lifting motion structure. The reciprocating motion drive structure includes a spline portion disposed at the lower end of the lifting shaft. A rotatable swing sleeve is sleeved on the spline portion. The inner hole of the swing sleeve has a groove that mates with the spline portion, and the spline portion can slide up and down along the groove. The outer wall of the swing sleeve is provided with a swing bearing, and a swing cam is provided corresponding to the swing bearing. The swing cam is rotatably mounted in the housing. The peripheral wall of the swing cam is provided with an annular groove. One side of the annular groove is provided with a circumferentially arc-shaped protrusion. The top of the protrusion is provided with a flat section. The swing bearing is placed in the annular groove. When the swing cam rotates, the protrusion passes through the swing bearing, driving the swing bearing and the swing sleeve to shift to one side, pause briefly, and then return to their original positions, thereby driving the lifting shaft and the robot to complete the reciprocating motion.

[0008] The lifting mechanism includes two adjacent limiting discs mounted on the peripheral wall of the lifting shaft, forming an annular lifting groove between the two limiting discs; it also includes a cam groove on the end face of the swing cam and a rocker plate bent at an obtuse angle; a shaft is installed inside the housing, one end of the rocker plate has a hole and is fitted onto the shaft, a fulcrum bearing is provided on the peripheral wall of the bent portion of the rocker plate, the fulcrum bearing is placed in the cam groove, and the other end of the rocker plate has a lifting bearing, the lifting bearing is placed in the lifting groove; when the swing cam rotates, the movement of the fulcrum bearing in the cam groove drives the rocker plate to rotate around the shaft, and then the lifting bearing acts on the lifting groove to drive the lifting shaft to rise and fall.

[0009] Furthermore, the transmission mechanism between the indexing transmission assembly and the lifting reciprocating transmission assembly includes a first gear disposed on the end face of the indexing cam, a second gear disposed on the end face of the swing cam, and a bridge gear connecting the first gear and the second gear; the central shaft of the swing cam is connected to the output shaft of the motor.

[0010] Furthermore, the housing is also provided with a lower bearing seat and an indexing bearing seat; one end of the swing sleeve is inserted into the lower bearing seat; a ball bearing is provided between the indexing bearing seat and the indexing drive sleeve.

[0011] Furthermore, the indexing drive sleeve is connected to the central hole of the indexing turntable; the lifting shaft is connected to the end of the robot arm.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. Integrated drive and simplified structure: By integrating the rotation drive of the indexing turntable with the reciprocating and lifting drive of the robot into a combined drive component and driven by the same motor, the number of drive motors and related independent transmission components is significantly reduced, making the overall structure more compact and simple.

[0013] 2. Convenient assembly and reduced costs: Due to the integrated design of the drive structure, the complex assembly process of multiple independent drive systems is avoided, the assembly process is simplified, the number of parts and assembly time are reduced, thereby effectively reducing manufacturing and maintenance costs.

[0014] 3. Stable operation and high reliability: The unified power source and optimized transmission path reduce the synchronization error and interference between different drive systems, improving the smoothness of equipment operation and the coordination and reliability of actions.

[0015] 4. High functionality and reliable operation: The indexing transmission assembly utilizes the cooperation of the indexing cam and the spiral groove to precisely control the intermittent rotation angle of the indexing drive sleeve; the lifting and reciprocating transmission assembly cleverly combines the boss structure of the swing cam with the lever principle of the rocker arm, which can simultaneously and reliably realize the reciprocating deflection and lifting motion of the lifting shaft, meeting the needs of the robot arm for precise transfer and bag opening and closing operations between different workstations.

[0016] 5. Easy to maintain: The integrated design makes it easier to lubricate, inspect and replace components, thus improving the maintainability of the equipment.

[0017] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a perspective view of a specific embodiment of the present invention; Figure 2 This is a cross-sectional view of a specific embodiment of the present invention; Figure 3 This is a perspective view of the internal structure in a specific embodiment of the present invention; Figure 4 This is a perspective view of the indexing cam in a specific embodiment of the present invention; Figure 5 This is a perspective view of the swing cam in a specific embodiment of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1-Box; 2-Indexing drive sleeve; 3-Lifting shaft; 4-Indexing transmission assembly; 41-Sleeve disc; 42-Indexing bearing; 43-Indexing cam; 431-Helical groove; 5-Lifting reciprocating transmission assembly; 51-Reciprocating motion drive structure; 50-Spline section; 5-Swing sleeve; 513-Swing bearing; 514-Swing cam; 5141-Annular groove; 5142-Boss; 5143-Flattening section; 52-Lifting motion structure; 521-Limiting disc; 522-Lifting groove; 523-Cam groove; 524-Rocker; 525-Support shaft; 526-Pivot bearing; 527-Lifting bearing; 6-Transmission mechanism; 61-First gear; 62-Second gear; 63-Transition gear; 8-Lower bearing seat; 9-Indexing bearing seat; 10-Ball bearing. Detailed Implementation

[0020] The present invention will be specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0021] like Figure 1 — Figure 5 As shown, this embodiment discloses a combined drive component for a bag packaging machine, aiming to solve the problem caused by the separation of the indexing turntable and the robot arm drive in existing bag packaging machines. The combined drive component includes a housing 1, and all core transmission components are integrated inside the housing 1.

[0022] The housing 1 contains a rotatable indexing drive sleeve 2, and a lifting shaft 3 is slidably mounted in the inner hole of the indexing drive sleeve 2. The upper end of the indexing drive sleeve 2 is fixedly connected to the central hole of the indexing turntable of the bag packaging machine, thereby driving the indexing turntable to rotate intermittently at a set angle. The upper end of the lifting shaft 3 is connected to the end of the robot arm to control the robot arm's movements.

[0023] To achieve intermittent rotation of the indexing drive sleeve 2, an indexing transmission assembly 4 is provided. The indexing transmission assembly 4 includes a sleeve disc 41 integrally formed on the indexing drive sleeve 2, with several (e.g., four) circumferentially distributed indexing bearings 42 mounted on the peripheral wall of the sleeve disc 41. Corresponding to each indexing bearing 42, an indexing cam 43 is fixedly installed inside the housing 1. The peripheral wall of the indexing cam 43 has a helical groove 431, with an inlet at one end and an outlet at the other. During operation, the indexing bearing 42 is always positioned within the helical groove 431. When the indexing cam 43 is driven to rotate, its helical groove 431 forces the indexing bearing 42, the sleeve disc 41, and the indexing drive sleeve 2 to produce intermittent step rotation, thereby achieving the indexing function.

[0024] To enable the reciprocating rotation of the lifting shaft 3 (for the robot to switch between two workstations) and the lifting motion (for the robot to insert and remove packaging bags), a reciprocating lifting transmission assembly 5 is provided. This assembly includes a reciprocating motion drive structure 51 and a lifting motion structure 52.

[0025] The core of the reciprocating motion drive structure 51 is the swing sleeve 5 and the swing cam 514. The lower end of the lifting shaft 3 has a splined portion 50, and the inner hole of the swing sleeve 5 has a groove that mates with the splined portion 50, allowing the swing sleeve 5 to rotate relative to the splined portion 50, while the splined portion 50 can slide up and down along the groove of the swing sleeve 5. A swing bearing 513 is mounted on the outer wall of the swing sleeve 5. The swing cam 514 is rotatably mounted inside the housing 1, and its peripheral wall has an annular groove 5141. One side of the annular groove 5141 has a circumferentially arched boss 5142, and the top of the boss 5142 has a flat section 5143. In fact, the shape of the boss 5142 is closer to that of an isosceles trapezoid. The swing bearing 513 is placed within the annular groove 5141. When the swing cam 514 is driven to rotate, the boss 5142 gradually approaches and lifts the swing bearing 513, causing the swing sleeve 5 and the splined portion 50 of the lifting shaft 3 connected to it to shift to one side. When the highest point of the boss 5142 (the flat section 5143) passes the swing bearing 513, the swing bearing 513 reaches its maximum offset position and pauses slightly. Then the boss 5142 moves away, and the swing bearing 513 returns to the initial position of the annular groove 5141 under the action of the restoring force (such as a spring or gravity, not shown in the figure, a conventional restoring method can be used). This cycle drives the lifting shaft 3 and the robot to complete the reciprocating deflection action between two workstations (such as the bag opening workstation and the feeding workstation).

[0026] The lifting mechanism 52 drives the lifting shaft 3 to move up and down. Two adjacent limiting discs 521 are provided on the peripheral wall of the lifting shaft 3, forming an annular lifting groove 522 between them. One end face of the swing cam 514 has a cam groove 523 and a rocker arm 524 bent at an obtuse angle. A shaft 525 is fixedly installed inside the housing 1. One end of the rocker arm 524 has a hole and is fitted onto the shaft 525, allowing the rocker arm 524 to rotate around the shaft 525. A pivot bearing 526 is provided on the peripheral wall of the bent portion of the rocker arm 524, and this pivot bearing 526 is placed within the cam groove 523 on the end face of the swing cam 514. The other end of the rocker arm 524 has a lifting bearing 527, which is placed within the lifting groove 522 of the lifting shaft 3. When the oscillating cam 514 rotates, the cam groove 523 rotates accordingly, causing the pivot bearing 526 to move within the cam groove 523, thereby causing the rocker 524 to rotate around the support shaft 525. The lifting bearing 527 at the other end of the rocker 524 moves up and down with the rotation of the rocker 524, acting on different positions of the lifting groove 522, thereby pushing or pulling the lifting shaft 3 to move up and down along the inner hole of the indexing drive sleeve 2. Through the special contour design of the cam groove 523, the lifting stroke and timing of the lifting shaft 3 can be precisely controlled.

[0027] The indexing transmission assembly 4 and the lifting reciprocating transmission assembly 5 do not operate independently, but are connected through the transmission mechanism 6 and driven by the same motor. Specifically, a first gear 61 is provided on the end face of the indexing cam 43, and a second gear 62 is provided on the end face of the swing cam 514. The first gear 61 and the second gear 62 are connected by one or more bridge gears 63, allowing the motor to simultaneously drive the indexing cam 43 and the swing cam 514 to rotate. In this embodiment, preferably, the central shaft of the swing cam 514 is directly connected to the output shaft of the motor through a coupling or other conventional transmission method. The power of the motor is transmitted to the first gear 61 of the indexing cam 43 via the second gear 62 and bridge gears 63 of the swing cam 514, achieving linkage.

[0028] To enhance the stability of the components, a lower bearing seat 8 and an indexing bearing seat 9 are also provided on the housing 1. One end of the swing sleeve 5 is inserted into the lower bearing seat 8 to support the stable rotation of the swing sleeve 5. A ball bearing 10 is provided between the indexing bearing seat 9 and the indexing drive sleeve 2 to ensure the smoothness and accuracy of the rotation of the indexing drive sleeve 2.

[0029] Brief description of the workflow of the example: The motor starts, driving the swing cam 514 to rotate. On one hand, the swing cam 514, through the cooperation of its peripheral wall boss 5142 and swing bearing 513, drives the swing sleeve 5 and lifting shaft 3 to reciprocate, allowing the robot to switch between the bag opening station and the material feeding station. On the other hand, the swing cam 514, through the cooperation of its end face cam groove 523 and rocker plate 524, drives the lifting shaft 3 to rise and fall, allowing the robot to insert into the packaging bag in the bag opening station, open the bag opening, and follow to the material feeding station to withdraw after feeding. At the same time, the second gear 62 of the swing cam 514 drives the indexing cam 43 to rotate through the bridge gear 63. The spiral groove 431 of the indexing cam 43 drives the indexing bearing 42 and sleeve 41 (the indexing bearing 42 drives the sleeve 41 to rotate through the spiral groove, thereby driving) the indexing drive sleeve 2 to rotate, thereby driving the indexing turntable and its bag clamping mechanism to pass through each station in sequence. Throughout the process, the robotic arm's reciprocating and lifting movements are coordinated with the indexing turntable's rotation, all driven by a single motor, resulting in a compact and efficient structure.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combination drive component for a bag-on- a-peg packaging machine, characterized by, The utility model provides a kind of index drive device, including box (1), rotatable index drive sleeve (2) and liftable slidingly arranged in the hole of index drive sleeve (2) lifting shaft (3) are provided in the box (1);The box (1) is provided with the index transmission assembly (4) of driving index drive sleeve (2) intermittent rotation according to set angle, and the lifting and back transmission assembly (5) of driving lifting shaft (3) back and forth rotation and lifting movement;Index transmission assembly (4) and lifting and back transmission assembly (5) are connected by transmission mechanism (6), and driving force is provided by same motor.

2. The in-line bagger combination drive component of claim 1, wherein, The index transmission assembly (4) includes a sleeve disc (41) disposed on the index drive sleeve (2), and a plurality of index bearings (42) are circumferentially distributed on the peripheral wall of the sleeve disc (41). A corresponding index cam (43) is provided for each index bearing (42), and a spiral groove (431) is formed in the peripheral wall of the index cam (43). The spiral groove (431) has an inlet at one end face of the index cam (43) and an outlet at the other end face, and the index bearing (42) is disposed in the spiral groove (431).

3. The combination drive component of a bag-on-peg packaging machine according to claim 1, wherein, The lifting and back transmission assembly (5) includes a back and forth action driving structure (51) and a lifting action structure (52). The back and forth action driving structure (51) includes a spline portion (50) disposed at the lower end of the lifting shaft (3), and a swing sleeve (5) is rotatably sleeved on the spline portion (50). A groove is formed in the inner hole of the swing sleeve (5) and engages with the spline portion (50). The spline portion (50) can slide up and down along the groove. A swing bearing (513) is disposed on the outer wall of the swing sleeve (5), and a swing cam (514) is disposed corresponding to the swing bearing (513). The swing cam (514) is rotatably installed in the box (1). An annular groove (5141) is formed in the peripheral wall of the swing cam (514). A convex platform (5142) is formed on one side of the annular groove (5141) and has a circumferential arc shape. A flat section (5143) is formed at the top end of the convex platform (5142). The swing bearing (513) is disposed in the annular groove (5141).

4. The combination drive component of a bag-on-peg packaging machine according to claim 3, wherein, The lifting action structure (52) includes two adjacent limiting discs (521) disposed on the peripheral wall of the lifting shaft (3), and an annular lifting groove (522) is formed between the two limiting discs (521). A cam groove (523) is disposed on the end face of the swing cam (514), and a bent flap (524) is disposed. A support shaft (525) is installed in the box (1). One end of the bent flap (524) has a hole and is sleeved on the support shaft (525). A fulcrum bearing (526) is disposed on the peripheral wall of the bent portion of the bent flap (524). The fulcrum bearing (526) is disposed in the cam groove (523). A lifting bearing (527) is disposed at the other end of the bent flap (524), and the lifting bearing (527) is disposed in the lifting groove (522).

5. The combination drive component of a bag-on-peg packaging machine according to claim 2, wherein, The transmission mechanism (6) between the indexing transmission assembly (4) and the lifting and returning transmission assembly (5) comprises a first gear (61) arranged on the end face of the indexing cam (43), a second gear (62) arranged on the end face of the swing cam (514), and a bridge gear (63) connecting the first gear (61) and the second gear (62); the middle shaft of the swing cam (514) is in transmission connection with the output shaft of the motor.

6. The combination drive component of a bag-on-peg packaging machine according to claim 1, wherein, The box (1) is further provided with a lower bearing seat (8) and an indexing bearing seat (9); one end of the swing sleeve (5) is inserted into the lower bearing seat (8); the indexing bearing seat (9) and the indexing drive sleeve (2) are provided with a ball bearing (10).

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