Intermittent boxing machine cam replacement mechanism and control method thereof

Abstract

The invention discloses a cam replacement mechanism of an intermittent boxing machine. The cam replacement mechanism comprises a main shaft, a driving motor and a cam group fixed on the main shaft, the driving motor is in transmission connection with the main shaft and is used for providing a power source for rotation of the main shaft; the cam set is in transmission connection with all movement mechanisms of the intermittent boxing machine, and when the main shaft rotates, the cam set drives all the movement mechanisms of the intermittent boxing machine to conduct continuous periodic cycle operation. The invention further discloses a control method of the cam replacement mechanism of the intermittent boxing machine. According to the cam replacement mechanism of the intermittent boxing machine, the overall structure of the intermittent boxing machine can be more compact, the reliability is higher, and meanwhile the working efficiency of the intermittent boxing machine can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machinery, and in particular to a cam replacement mechanism of an intermittent cartoning machine and a control method thereof. Background Art

[0002] Intermittent cartoning machine is a commonly used intermittent cartoning machine, especially in the pharmaceutical packaging industry. Intermittent cartoning machine is a machine that realizes the principle of drug packaging by machine, combines drug materials and instructions together, and automatically loads them into medicine boxes without human intervention. The main body of the equipment mainly includes a guide bin mechanism, a push rod mechanism, a clamping mechanism, a feeding conveying mechanism and a closing box conveying mechanism.

[0003] However, the operation of various mechanisms of the existing intermittent cartoning machines is mostly controlled by multiple servos. Due to the characteristics of intermittent cartoning, the servo motion law is not continuous, which limits the efficiency of the overall equipment.

[0004] Based on this, a cam replacement mechanism for an intermittent cartoning machine and a control method thereof are proposed to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a cam replacement mechanism for an intermittent cartoning machine and a control method thereof, so as to improve the working efficiency of the intermittent cartoning machine.

[0006] In order to solve the above technical problems, the present invention provides a cam replacement mechanism for an intermittent cartoning machine, comprising a main shaft, a driving motor and a cam group fixed on the main shaft;

[0007] The driving motor is drivingly connected to the main shaft and is used to provide a power source for the rotation of the main shaft;

[0008] The cam group is in transmission connection with each moving mechanism of the intermittent cartoning machine. When the main shaft rotates, the cam group drives each moving mechanism of the intermittent cartoning machine to perform continuous periodic cycle operation.

[0009] Furthermore, the cam group includes a guide cam, a push rod cam, an opening and closing cam, a lifting cam and two intermittent cams;

[0010] The lifting cam is in transmission connection with the clamping mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the lifting cam controls the clamping mechanism to perform one round of reciprocating lifting and lowering motion.

[0011] The opening and closing cam is in transmission connection with the clamping mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the opening and closing cam controls the clamp of the clamping mechanism to perform one round of opening and closing movement.

[0012] The guide cam is in driving connection with the guide bin mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the guide cam controls the guide bin mechanism to perform one round of reciprocating transverse movement.

[0013] The push rod cam is in transmission connection with the push rod mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the push rod cam controls the push rod mechanism seat to perform one round of reciprocating transverse movement.

[0014] The two intermittent cams are respectively connected to the feed conveying mechanism and the box body conveying mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the two intermittent cams respectively control the feed conveying mechanism and the box body conveying mechanism to perform one round of intermittent motion.

[0015] Furthermore, the two intermittent cams and the lifting cam are fixed to the main shaft through conical pins, and the inner sides of the guide cam, the push rod cam and the opening and closing cam are movably sleeved with mounting seats, the mounting seats are fixed to the main shaft through conical pins, and fastening screws are installed on the mounting seats.

[0016] Furthermore, the main body of the intermittent cam is cylindrical, and a guide groove structure is provided on the surface of the intermittent cam, and the guide groove structure is connected to a sprocket through a rotating driving member;

[0017] The guide groove mechanism includes a driving groove and a transition groove connected to the driving groove;

[0018] The driving groove occupies one third of the circumference of the intermittent cam. When the rotary driving member acts on the driving groove, the sprocket rotates; when the rotary driving member acts on the transition groove, the sprocket is stationary.

[0019] Furthermore, the spindle transmission is connected to a handwheel adjustment mechanism, and the handwheel adjustment mechanism is used to manually rotate the spindle to perform equipment debugging and maintenance;

[0020] The handwheel adjustment mechanism comprises a driven helical gear, a driving helical gear, a handwheel shaft and a handwheel;

[0021] The driven helical gear is fixed on the main shaft through a conical pin;

[0022] The active bevel gear is connected to the hand wheel through the hand wheel shaft;

[0023] A connecting seat is arranged on the movable sleeve on the hand wheel shaft.

[0024] Furthermore, the hand wheel shaft is provided with a first groove and a second groove at intervals along its length direction, and a pin shaft cooperating with the first groove and the second groove is threadedly installed on the connecting seat;

[0025] When the pin shaft is located in the first groove, the driven helical gear and the driving helical gear are meshed, and when the pin shaft is located in the second groove, the driven helical gear and the driving helical gear are meshed;

[0026] The driven helical gears and the driving helical gears are arranged crosswise and staggered.

[0027] The present invention also provides a control method for a cam replacement mechanism of an intermittent cartoning machine, comprising the following steps:

[0028] The cam replacement mechanism is fixedly installed so that its cam group is correspondingly connected to each mechanism of the intermittent cartoning machine;

[0029] Carry out debugging of intermittent cartoning machine to make each mechanism of intermittent cartoning machine in a suitable initial state;

[0030] The power source is started, and the cam group is used to control the various mechanisms of the intermittent cartoning machine to perform continuous periodic cycle operation to realize the cartoning operation; the operation time of one cycle of each mechanism of the intermittent cartoning machine is the time for the main shaft to rotate one circle.

[0031] Furthermore, the specific operation steps of the debugging operation of the intermittent cartoning machine are as follows:

[0032] The main shaft is driven to rotate by using a hand wheel adjustment mechanism so that the connection point between the rotary drive member and the intermittent cam is located at the connection point between the transition groove and the drive groove;

[0033] After adjusting the feeding conveying mechanism and the box conveying mechanism of the intermittent cartoning machine to the appropriate positions, use chains to connect them to the two intermittent cams respectively;

[0034] The guide cam and the push rod cam are rotated to adjust the positions of the guide bin mechanism and the push rod mechanism of the intermittent cartoning machine, and the opening and closing cam is rotated to make the clamp of the clamping mechanism of the intermittent cartoning machine in a suitable state.

[0035] Furthermore, the operation time of one cycle of each mechanism of the intermittent cartoning machine includes two time nodes, namely a first time node and a second time node;

[0036] The operation flow of the cam group controlling each mechanism of the intermittent cartoning machine within the first time node is as follows:

[0037] The connection point between the rotary drive member and the intermittent cam runs from one end of the transition groove to the other end of the transition groove, and the feed conveying mechanism and the box conveying mechanism are in a stopped state;

[0038] The lifting cam controls the clamping mechanism to rise to the highest point and then descend to the lowest point, and then controls the clamping mechanism to reset;

[0039] The opening and closing cam controls the clamp of the clamping mechanism to gradually close, and the closing is completed after the clamping mechanism reaches the highest point; then the clamp is gradually released when the clamping mechanism descends, and is completely released after the clamping mechanism reaches the lowest point; after the clamp of the clamp is completely released, the opening and closing cam controls the clamp of the clamp to reset;

[0040] The guide cam controls the guide bin mechanism to move horizontally from directly below the feed conveying mechanism toward the box conveying mechanism. After the guide bin mechanism reaches directly above the box conveying mechanism, the guide cam controls the guide bin mechanism to adjust and reset.

[0041] The push rod cam controls the push rod mechanism to move horizontally toward the box body conveying mechanism. After the push rod mechanism moves horizontally to a specified position, the push rod cam controls the push rod mechanism to adjust and reset.

[0042] Furthermore, the operation flow of the cam group controlling each mechanism of the intermittent cartoning machine within the second time node is as follows:

[0043] The connection point between the rotary drive member and the intermittent cam runs from one end of the drive slot to the other end of the drive slot, and the two intermittent cams control the movement of the feed conveying mechanism and the box conveying mechanism respectively;

[0044] The lifting cam, the opening and closing cam, the guide cam and the push rod cam respectively control the clamping mechanism, the clamp of the clamping structure, the material guiding mechanism and the push rod mechanism to complete the reset operation that was not completed at the first time node.

[0045] Compared with the prior art, the present invention has at least the following beneficial effects:

[0046] The cam replacement mechanism of the intermittent cartoning machine provided by the present invention serves as a unified transfer piece for the power source of each mechanism of the intermittent cartoning machine. It only needs to connect a driving mechanism with a main shaft to realize the operation of multiple mechanisms of the intermittent cartoning machine. Compared with the traditional multi-servo control, the overall structure of the intermittent cartoning machine equipment can be more compact and the reliability is higher. At the same time, when the speed changes, each mechanism can obtain a smoother movement, and the mechanisms can also keep synchronization, and the actions can be superimposed. The next action can be started before one action is completed, so the cycle time can be shortened, that is, the working efficiency of the intermittent cartoning machine is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the cam replacement mechanism of the intermittent cartoning machine in the first embodiment of the present invention;

[0048] Figure 2 Schematic diagram of the structure of the driving arm component in the first embodiment of the present invention;

[0049] Figure 3 It is a schematic diagram of the installation of the cam assembly and the driving arm component in the first embodiment of the present invention;

[0050] Figure 4 It is a main schematic diagram of the installation of the cam replacement mechanism of the intermittent cartoning machine and the main body of the intermittent cartoning machine according to the first embodiment of the present invention;

[0051] Figure 5 It is a rear view of a schematic diagram of the installation of a cam replacement mechanism of an intermittent cartoning machine and an equipment body of the intermittent cartoning machine according to an embodiment of the present invention;

[0052] Figure 6 This is a schematic diagram of the structure of a mounting base according to an embodiment of the present invention;

[0053] Figure 7 It is a schematic cross-sectional view of the hand wheel shaft in the cam replacement mechanism of the intermittent cartoning machine of the present invention. DETAILED DESCRIPTION

[0054] The intermittent cartoning machine cam replacement mechanism and control method thereof of the present invention will be described in more detail below in conjunction with a schematic diagram, wherein a preferred embodiment of the present invention is shown, and it should be understood that those skilled in the art may modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as being broadly known to those skilled in the art and not as a limitation of the present invention.

[0055] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in illustrating the purpose of the embodiments of the present invention.

[0056] Embodiment 1

[0057] like Figure 1 As shown, an embodiment of the present invention proposes a cam replacement mechanism for an intermittent cartoning machine, comprising a main shaft 1, a driving motor 13 and a cam group fixed on the main shaft 1; the driving motor 13 is transmission-connected to the main shaft 1 to provide a power source for the rotation of the main shaft 1; the cam group is transmission-connected to each moving mechanism of the intermittent cartoning machine, and when the main shaft 1 rotates, the cam group drives each moving mechanism of the intermittent cartoning machine to perform continuous periodic cycle operation.

[0058] Specifically, the cam group includes a guide cam 2, a push rod cam 3, an opening and closing cam 4, a lifting cam 5 and two intermittent cams 6;

[0059] The lifting cam 5 is in transmission connection with the clamping mechanism of the intermittent cartoning machine. When the main shaft 1 rotates one circle, the lifting cam 5 controls the clamping mechanism to perform one round of reciprocating lifting motion.

[0060] The opening and closing cam 4 is in transmission connection with the clamping mechanism of the intermittent cartoning machine. When the main shaft 1 rotates one circle, the opening and closing cam 4 controls the clamp of the clamping mechanism to make one round of opening and closing movement.

[0061] The guide cam 2 is in transmission connection with the guide bin mechanism of the intermittent cartoning machine. When the main shaft 1 rotates one circle, the guide cam 2 controls the guide bin mechanism to perform one round of reciprocating transverse movement.

[0062] The push rod cam 3 is in transmission connection with the push rod mechanism of the intermittent cartoning machine. When the main shaft 1 rotates one circle, the push rod cam 3 controls the push rod mechanism seat to perform one round of reciprocating transverse movement.

[0063] The two intermittent cams 6 are respectively connected to the feed conveying mechanism and the box body conveying mechanism of the intermittent cartoning machine. When the main shaft 1 rotates one circle, the two intermittent cams 6 respectively control the feed conveying mechanism and the box body conveying mechanism to perform one round of intermittent motion.

[0064] In this embodiment, both ends of the main shaft 1 are rotatably mounted with a fixing seat 10, and a plurality of fixing holes are opened on the fixing seat 10. Bolts are passed through the fixing holes and tightened to install the main shaft 1 at the corresponding position of the device body b of the intermittent cartoning machine (such as Figure 4 and Figure 5 ), connected to the various mechanisms of the device body, and acts on the relevant drive arm member a in the device body (as shown Figure 3 shown).

[0065] Preferably, the spindle 1 is rotatably connected to the fixed seat 10 through an external spherical bearing (not shown). The external spherical bearing is actually a variation of the deep groove ball bearing, characterized in that the outer diameter surface of the outer ring is a spherical surface, which can be matched into the corresponding concave spherical surface of the bearing seat to play a role in centering.

[0066] Combined with reference Figure 2 , Figure 2 The schematic diagram of the structure of the driving arm component a in the main body of the device is composed of a plurality of swing arms arranged movably, wherein the guide cam 2, the push rod cam 3, the opening and closing cam 4 and the lifting cam 5 can act on the driving arm component a respectively to drive different swing arms.

[0067] Specific, combined with reference Figure 2The first swing arm 15 of the driving arm member a is the driving arm of the guide bin mechanism of the intermittent cartoning machine, and is connected to the guide cam 2. When the guide cam 2 drives the first swing arm 15 to swing, it will drive the guide bin mechanism to move horizontally and transport the material to the position to be pushed by the push rod. The second swing arm 16 and the third swing arm 20 are the driving arms of the push rod mechanism of the intermittent cartoning machine. When the second swing arm 16 and the third swing arm 20 swing, the stroke is enlarged to push the material at the position to be pushed by the push rod into the packaging box. The fourth swing arm 17, the fifth swing arm 18 and the sixth swing arm 19 cooperate to be the driving arms for the lifting and lowering of the clamping mechanism and the opening and closing of the clamp of the intermittent cartoning machine. The three cooperate with each other to control the clamping mechanism to clamp the instruction manual to the appropriate position.

[0068] In this embodiment, no changes are made to the driving arm component a, and its structure and function are all existing technologies. Those skilled in the art should know how to control the material guide bin mechanism, the push rod mechanism and the clamping mechanism, which will not be elaborated here.

[0069] In a specific example, the main body of the intermittent cam 6 is cylindrical, and a guide groove structure is provided on the surface of the intermittent cam 6, and the guide groove structure is connected to the sprocket 11 through the rotating driving member 12;

[0070] The guide groove mechanism includes a driving groove 61 and a transition groove 62 connected to the driving groove 61;

[0071] The driving groove 61 occupies one-third of the circumference of the intermittent cam. When the rotating driving member 12 acts on the driving groove 61, the sprocket 8 rotates; when the rotating driving member 12 acts on the transition groove 62, the sprocket 8 is stationary, that is, the intermittent cam 6 rotates 360° and the guide sprocket 11 rotates 120°.

[0072] In an optional embodiment, the motor 13 adopts a 1.5KW servo motor, which is fixed at the corresponding position of the equipment body b, and transmits the torque to the main shaft 1 through a chain drive. Specifically, the transmission sprocket is fixed on the main shaft 1 by a conical pin, and the transmission sprocket is connected to the motor drive through a chain. The conical pin is designed with a taper ratio of 1:50, which is easy to assemble and ensures positioning accuracy.

[0073] In a specific embodiment, the two intermittent cams 6 and the lifting cam 5 are fixed to the main shaft 1 through conical pins, and the inner sides of the guide cam 2, the push rod cam 3, and the opening and closing cam 4 are movably sleeved with a mounting seat 7, which is fixed to the main shaft through a conical pin, and a fastening screw 9 (such as Figure 4 Preferably, the taper ratio of the conical pin is 1:50.

[0074] The inner sides of the guide cam 2 , the push rod cam 3 , and the opening and closing cam 4 are all movably sleeved with mounting seats 7 , which facilitates the adjustment of the guide cam 2 , the push rod cam 3 , and the opening and closing cam 4 after installation.

[0075] Specific, combined with reference Figure 5 The mounting seat 7 is composed of a circular limiting plate 71 and a circular positioning boss 72. The diameter of the limiting plate 71 is larger than the diameter of the positioning boss 72, and a movable arc groove 73 is formed through the end surface of the limiting plate 71. When installing the guide cam 2, the positioning boss 72 is fixed to the main shaft 1 by a conical pin, and then the guide cam 2 is sleeved on the positioning boss 72, and the fastening screw 9 is passed through the movable arc groove 73 to connect and fasten the guide cam 2 to complete the installation of the guide cam 2. When the guide cam 2 needs to be adjusted, only the fastening screw 8 needs to be loosened, which is simple to operate. The installation and subsequent adjustment of the push rod cam 3 and the opening and closing cam 4 are consistent with the guide cam 2 described above, and no further details are given here.

[0076] In a preferred embodiment, the main shaft 1 is transmission-connected with a handwheel adjustment mechanism 8, and the handwheel adjustment mechanism 8 is used to manually rotate the main shaft 1 for equipment debugging and maintenance.

[0077] Specifically, the handwheel adjustment mechanism 8 includes a driven bevel gear 81, a driving bevel gear 82, a handwheel shaft 83 and a handwheel 84. The driven bevel gear 81 is fixed to the main shaft through a conical pin, and the taper ratio of the conical pin is 1:50. The driving bevel gear 82 is connected to the handwheel 84 through the handwheel shaft 83, and a connecting seat 85 is provided on the movable sleeve of the handwheel shaft 83.

[0078] The connecting seat 85 is fixed at a corresponding position on one side of the equipment body b, and the main shaft 1 is driven to rotate by rotating the hand wheel 84 under the transmission of the driven bevel gear 81 and the driving bevel gear 82, which facilitates the debugging and maintenance of the equipment.

[0079] Furthermore, in conjunction with reference Figure 6 The hand wheel shaft 83 is provided with a first groove 86 and a second groove 87 at intervals along its length direction, and a pin shaft 88 that cooperates with the first groove 86 and the second groove 87 is threadedly installed on the connecting seat 85.

[0080] Specifically, the driven bevel gear 81 and the driving bevel gear 82 are cross-staggered. When the pin shaft 88 is located in the first groove 86, the driven bevel gear 81 and the driving bevel gear 82 are meshed. At this time, the hand wheel 84 can be rotated to drive the main shaft 1 to rotate. The installation angles of the guide cam 2, the push rod cam 3 and the opening and closing cam 4 are adjusted based on the intermittent cam 6 and the lifting cam 5 to achieve the debugging and maintenance of the equipment.

[0081] When the pin 87 is located in the second groove 87, the driven bevel gear 81 and the driving bevel gear 82 are separated. At this time, even if the hand wheel 84 is turned, the main shaft 1 cannot be driven to rotate, so that the equipment exits the debugging and maintenance state.

[0082] Embodiment 2

[0083] This embodiment, based on the first embodiment, proposes a control method for a cam replacement mechanism of an intermittent cartoning machine, specifically, comprising the following steps:

[0084] S1. The cam replacement mechanism is fixedly installed so that the cam group is correspondingly connected to each mechanism of the intermittent cartoning machine;

[0085] S2. Debugging the intermittent cartoning machine to put each mechanism of the intermittent cartoning machine in a suitable initial state;

[0086] S3, starting the power source, using the cam group to control the various mechanisms of the intermittent cartoning machine to perform continuous cycle operation to achieve the cartoning operation; the operation time of one cycle of each mechanism of the intermittent cartoning machine is the time for the main shaft to rotate one circle.

[0087] In the above embodiment, the specific operation steps of the debugging operation of the intermittent cartoning machine are as follows:

[0088] S21, using the hand wheel adjustment mechanism 8 to drive the main shaft 1 to rotate, so that the connection point between the rotary drive member 12 and the intermittent cam 6 is located at the connection point between the transition groove 62 and the driving groove 61;

[0089] S22, adjusting the feeding conveying mechanism and the box conveying mechanism of the intermittent cartoning machine to appropriate positions and then using chains to connect them to the two intermittent cams 6 respectively;

[0090] S23, the guide cam 2 and the push rod cam 3 are rotated to adjust the positions of the guide bin mechanism and the push rod mechanism of the intermittent cartoning machine, and the opening and closing cam 4 is rotated to make the clamp of the clamping mechanism of the intermittent cartoning machine in a suitable state.

[0091] In the above embodiment, in order to facilitate a detailed description of the operation process of each mechanism of the intermittent cartoning machine in one cycle, the operation time of each mechanism of the intermittent cartoning machine in one cycle is defined as two time nodes, namely, the first time node and the second time node, and the time when the connection point of the rotating driving member 12 and the intermittent cam 6 runs from one end of the transition groove 62 to the other end of the transition groove 62 is defined as the first time node, and the time when the connection point of the rotating driving member 12 and the intermittent cam 6 runs from one end of the driving groove 61 to the other end of the driving groove 61 is defined as the second time node;

[0092] Specifically, the operation flow of the cam group controlling each mechanism of the intermittent cartoning machine at the first time node is as follows:

[0093] The feed conveying mechanism and the box conveying mechanism are in a stopped state;

[0094] The lifting cam 5 controls the clamping mechanism to rise to the highest point and then descend to the lowest point, and then controls the clamping mechanism to reset;

[0095] The opening and closing cam 4 controls the clamp of the clamping mechanism to gradually close, and the closing is completed after the clamping mechanism reaches the highest point; then the clamp is gradually released when the clamping mechanism descends, and is completely released after the clamping mechanism reaches the lowest point; after the clamp of the clamp is completely released, the opening and closing cam 4 controls the clamp of the clamp to reset;

[0096] The guide cam 2 controls the guide bin mechanism to move horizontally from directly below the feed conveying mechanism toward the box conveying mechanism. After the guide bin mechanism reaches directly above the box conveying mechanism, the guide cam 2 controls the guide bin mechanism to adjust and reset.

[0097] The push rod cam 3 controls the push rod mechanism to move horizontally toward the box body conveying mechanism. After the push rod mechanism moves horizontally to a specified position, the push rod cam 3 controls the push rod mechanism to adjust and reset.

[0098] The operation flow of the cam group controlling each mechanism of the intermittent cartoning machine at the second time node is as follows:

[0099] Two intermittent cams 6 respectively control the movement of the feed conveying mechanism and the box conveying mechanism;

[0100] The lifting cam 5, the opening and closing cam 4, the guide cam 2 and the push rod cam 3 respectively control the clamping mechanism, the clamp of the clamping structure, the material guiding mechanism and the push rod mechanism to complete the reset operation that was not completed at the first time node.

[0101] From the above, it can be seen that the intermittent cartoning machine, under the action of the intermittent cartoning machine cam replacement mechanism, has a general working process as follows: the motor 13 as a driving mechanism inputs power to the spindle 1, and the spindle 1 transmits power to each actuator. The intermittent cam 6 has a dynamic-static ratio of 120°:240°. When the intermittent cam 6 is in the 120° time period, the two intermittent cams 6 drive the feeding mechanism and the box closing mechanism to input the material and complete the closing of a carton. When the intermittent cam 6 is in the 240° time period, the opening and closing cam 4 and the lifting cam 5 control the clamping mechanism to send the instruction manual to the guide position, and the guide cam 2 controls the guide silo mechanism to move. At the same time, the push rod cam 3 controls the push rod mechanism to push the material and the instruction manual in the workstation into the carton together, and exit the relevant workstation. At this time, the action within 240° of the first intermittent cam 61 and the second intermittent cam 62 has been completed. When the first intermittent cam 61 and the second intermittent cam 62 continue to rotate to 120°, a complete set of actions is completed.

[0102] To sum up, the cam replacement mechanism of the intermittent cartoning machine provided by the present invention is used as a unified transfer piece for the power source of each mechanism of the intermittent cartoning machine. It only needs to use the main shaft to connect a driving mechanism to realize the operation of multiple mechanisms of the intermittent cartoning machine. Compared with the traditional multi-servo control, the overall structure of the intermittent cartoning machine equipment can be more compact and the reliability is higher. At the same time, when the speed changes, each mechanism can obtain a smoother movement, and the mechanisms can also keep in sync, and the actions can be superimposed. The next action can be started before one action is completed. Therefore, the cycle time can be shortened, that is, the working efficiency of the intermittent cartoning machine is improved.

[0103] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A cam replacement mechanism for an intermittent cartoning machine, characterized in that: It includes a main shaft, a driving motor and a cam group fixed on the main shaft; The driving motor is drivingly connected to the main shaft and is used to provide a power source for the rotation of the main shaft; The cam group is in transmission connection with each moving mechanism of the intermittent cartoning machine. When the main shaft rotates, the cam group drives each moving mechanism of the intermittent cartoning machine to perform continuous periodic cycle operation.

2. The intermittent cartoning machine cam replacement mechanism according to claim 1, characterized in that: The cam group includes a guide cam, a push rod cam, an opening and closing cam, a lifting cam and two intermittent cams; The lifting cam is in transmission connection with the clamping mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the lifting cam controls the clamping mechanism to perform one round of reciprocating lifting and lowering motion. The opening and closing cam is in transmission connection with the clamping mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the opening and closing cam controls the clamp of the clamping mechanism to perform one round of opening and closing movement. The guide cam is in driving connection with the guide bin mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the guide cam controls the guide bin mechanism to perform one round of reciprocating transverse movement. The push rod cam is in transmission connection with the push rod mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the push rod cam controls the push rod mechanism seat to perform one round of reciprocating transverse movement. The two intermittent cams are respectively connected to the feed conveying mechanism and the box body conveying mechanism of the intermittent cartoning machine. When the main shaft rotates one circle, the two intermittent cams respectively control the feed conveying mechanism and the box body conveying mechanism to perform one round of intermittent motion.

3. The cam replacement mechanism of the intermittent cartoning machine according to claim 2, characterized in that: The two intermittent cams and the lifting cam are fixed to the main shaft through conical pins. The inner sides of the guide cam, the push rod cam and the opening and closing cam are all movably sleeved with mounting seats. The mounting seats are fixed to the main shaft through conical pins, and fastening screws are installed on the mounting seats.

4. The cam replacement mechanism for an intermittent cartoning machine as claimed in claim 2, characterized in that: The main body of the intermittent cam is cylindrical, and a guide groove structure is provided on the surface of the intermittent cam, and the guide groove structure is connected to a sprocket through a rotating driving member; The guide groove mechanism includes a driving groove and a transition groove connected to the driving groove; The driving groove occupies one third of the circumference of the intermittent cam. When the rotary driving member acts on the driving groove, the sprocket rotates; when the rotary driving member acts on the transition groove, the sprocket is stationary.

5. The cam replacement mechanism for an intermittent cartoning machine as claimed in claim 3, characterized in that: The spindle is connected to a handwheel adjustment mechanism, which is used to manually rotate the spindle to debug and repair the equipment; The handwheel adjustment mechanism comprises a driven helical gear, a driving helical gear, a handwheel shaft and a handwheel; The driven helical gear is fixed on the main shaft through a conical pin; The active bevel gear is connected to the hand wheel through the hand wheel shaft; A connecting seat is arranged on the movable sleeve on the hand wheel shaft.

6. The cam replacement mechanism for an intermittent cartoning machine as claimed in claim 5, characterized in that: The hand wheel shaft is provided with a first groove and a second groove at intervals along its length direction, and a pin shaft cooperating with the first groove and the second groove is threadedly mounted on the connecting seat; When the pin shaft is located in the first groove, the driven helical gear and the driving helical gear are meshed, and when the pin shaft is located in the second groove, the driven helical gear and the driving helical gear are meshed; The driven helical gears and the driving helical gears are arranged crosswise and staggered.

7. A control method for a cam replacement mechanism of an intermittent cartoning machine, using the cam replacement mechanism of an intermittent cartoning machine as claimed in any one of claims 1 to 6, characterized in that: The steps include: The cam replacement mechanism is fixedly installed so that its cam group is correspondingly connected to each mechanism of the intermittent cartoning machine; Carry out debugging of intermittent cartoning machine to make each mechanism of intermittent cartoning machine in a suitable initial state; The power source is started, and the cam group is used to control the various mechanisms of the intermittent cartoning machine to perform continuous periodic cycle operation to realize the cartoning operation; the operation time of one cycle of each mechanism of the intermittent cartoning machine is the time for the main shaft to rotate one circle.

8. The cam replacement mechanism control method for an intermittent cartoning machine as claimed in claim 7, characterized in that: The specific operation steps of the debugging operation of the intermittent cartoning machine are as follows: The main shaft is driven to rotate by using a hand wheel adjustment mechanism so that the connection point between the rotary drive member and the intermittent cam is located at the connection point between the transition groove and the drive groove; After adjusting the feeding conveying mechanism and the box conveying mechanism of the intermittent cartoning machine to the appropriate positions, use chains to connect them to the two intermittent cams respectively; The guide cam and the push rod cam are rotated to adjust the positions of the guide bin mechanism, the push rod mechanism and the clamping mechanism of the intermittent cartoning machine, and the opening and closing cam is rotated to make the clamp of the clamping mechanism of the intermittent cartoning machine in a suitable state.

9. The cam replacement mechanism control method for an intermittent cartoning machine as claimed in claim 7, characterized in that: The operation time of one cycle of each mechanism of the intermittent cartoning machine includes two time nodes, namely, a first time node and a second time node; The operation flow of the cam group controlling each mechanism of the intermittent cartoning machine within the first time node is as follows: The connection point between the rotary drive member and the intermittent cam runs from one end of the transition groove to the other end of the transition groove, and the feed conveying mechanism and the box conveying mechanism are in a stopped state; The lifting cam controls the clamping mechanism to rise to the highest point and then descend to the lowest point, and then controls the clamping mechanism to reset; The opening and closing cam controls the clamp of the clamping mechanism to gradually close, and the closing is completed after the clamping mechanism reaches the highest point; then the clamp is gradually released when the clamping mechanism descends, and is completely released after the clamping mechanism reaches the lowest point; after the clamp of the clamp is completely released, the opening and closing cam controls the clamp of the clamp to reset; The guide cam controls the guide bin mechanism to move horizontally from directly below the feed conveying mechanism toward the box conveying mechanism. After the guide bin mechanism reaches directly above the box conveying mechanism, the guide cam controls the guide bin mechanism to adjust and reset. The push rod cam controls the push rod mechanism to move horizontally toward the box body conveying mechanism. After the push rod mechanism moves horizontally to a specified position, the push rod cam controls the push rod mechanism to adjust and reset.

10. The cam replacement mechanism control method for an intermittent cartoning machine as claimed in claim 9, characterized in that: The operation flow of the cam group controlling each mechanism of the intermittent cartoning machine within the second time node is as follows: The connection point between the rotary drive member and the intermittent cam runs from one end of the drive slot to the other end of the drive slot, and the two intermittent cams control the movement of the feed conveying mechanism and the box conveying mechanism respectively; The lifting cam, the opening and closing cam, the guide cam and the push rod cam respectively control the clamping mechanism, the clamp of the clamping structure, the material guiding mechanism and the push rod mechanism to complete the reset operation that was not completed at the first time node.

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