Overload protection device for duplex push rod of YB55 packaging machine

Abstract

The utility model discloses a YB55 packaging machine duplex push rod overload protection device which comprises a fixed swing rod, a first push rod, a second push rod, a third push rod, a fourth push rod, a fifth push rod and a sixth push rod, the fixed swing rod is provided with an installation groove in the thickness direction, and the non-installation-groove end of the fixed swing rod is connected with a first connecting shaft of equipment; one section of the connecting swing rod is mounted in the mounting groove in a sliding manner; the limiting assembly is arranged at the position, close to the first connecting shaft end, of the fixed swing rod mounting groove; the connecting assembly is arranged at the position, close to the connecting swing rod end, of the fixed swing rod mounting groove; one end of the connecting swing rod mounting section is rotationally connected with the limiting assembly, and the other end of the connecting swing rod mounting section is connected with the connecting assembly in a clamped mode. According to the utility model, in the normal operation process of equipment, when the duplex packet pushing rod extrudes cigarettes, the fixed swing rod is not dislocated, and only the connecting swing rod is separated, so that the connecting swing rod can be quickly reset, and subsequent adjustment and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to an overload protection device, in particular to a double-push rod overload protection device for a YB55 packaging machine, belonging to the technical field of cigarette manufacturing. Background Art

[0002] Generally speaking, the double-push rod aluminum foil of the YB55 packaging machine plays the role of pushing cigarette packs when the equipment is operating normally. It is divided into a front push rod and a rear push rod. The front push rod and the rear push rod are installed on the same shaft. The reciprocating motion of the shaft drives the front push rod and the rear push half rod to push cigarettes back and forth. The function of the front push rod is to push the double packs of cigarettes lifted up by the lifter into the soldering iron sealing channel to seal the cross-section of the cigarette packs. In the process of pushing, the last two packs of cigarettes will push the first two packs of cigarettes into the octagonal conveyor turret. During the intermittent rotation of the octagonal conveyor turret, unqualified cigarette packs will be removed. When the empty mold box after removal rotates to the next station, two packs of qualified cigarette packs will be added to the empty mold box by the cigarette replenisher. The octagonal conveyor turret continues to rotate intermittently, and will pause intermittently when it rotates to the entrance of the CT strip box packaging machine. During the pause, the rear push rod pushes the double packs of cigarettes into the packaging station of the CT strip box packaging machine.

[0003] Due to unexpected reasons, cigarette packs with unqualified appearance may occasionally appear during normal operation of the equipment. When cigarette packs with deformed appearance pass through the YB55 transparent paper packaging machine, loose cigarettes will be produced. When the YB55 transparent paper packaging machine has its own equipment problems, loose cigarettes or deformed cigarette packs may occasionally appear.

[0004] When the above-mentioned equipment failure occurs, the bad cigarette bales are rejected at the rejection station of the octagonal conveyor turret. Because the rejection process of this unqualified cigarette bale rejection device is that the electromagnet is activated to drive the rod dragging the cigarette bale to leave the lower part of the cigarette bale, and the cigarette bale falls into the waste basket by its own gravity. This has a disadvantage that sometimes when the deformation or loose bales are serious, they do not fall on time by their own gravity, and the octagonal turret starts to rotate. At this time, the bad cigarette bales will flow to the next process. When the octagonal turret is transferred to the entrance of the CT box packaging machine, the front push rod pushes the cigarette bales into the CT packaging machine. Since the bad cigarette bales are not rejected cleanly, the front push rod will cause blockage. At this time, the front push rod has no overload protection device. When the resistance is too large, the double push rod will be misaligned. After the misalignment, the equipment cannot operate normally, and the maintenance personnel must readjust and reset the phase of the double push rod, which is time-consuming.

[0005] At present, a Chinese utility model patent with the publication number CN213620399U discloses an overload protection device for a tobacco packaging machine, which includes a conveying channel with a U-shaped cross-section. A fixed baffle is provided at the open end of the conveying channel. It also includes a driving device for driving the baffle to reciprocate relative to the open end, so that the fixed baffle intermittently pats and moves the conveying channel. An active baffle is hinged on the fixed baffle, and a torsion spring is provided between the active baffle and the fixed baffle, so that the free end of the active baffle away from the fixed baffle presses against the open end. A proximity switch is provided at the bottom of the conveying channel opposite to the free end. When the free end disengages from the conveying channel, the proximity switch disconnects to stop the equipment. This overload protection device has a different application scenario and significant structural differences from the patent of the present application.

[0006] Therefore, developing a practical and reliable overload protection device for the double-link push rod of the packaging machine is the key to solving the above technical problems. Summary of the Invention

[0007] In view of the many defects and deficiencies in the above background technology, the present utility model has made improvements and innovations. The purpose is to provide an overload protection device for the double-link push rod of the packaging machine with a simple structure and ingenious design, which can ensure that during the normal operation of the equipment, when the double-link cigarette pushing rod squeezes cigarettes, the fixed swing rod itself does not shift, and only the connecting swing rod disengages, facilitating subsequent adjustment and maintenance.

[0008] Another object of the present invention is that after the operator finishes dealing with the equipment blockage fault, by turning the equipment, the connecting swing rod can be quickly reset, improving the maintenance efficiency and saving time.

[0009] To solve the above problems and achieve the above object of the invention, an overload protection device for the double-link push rod of the YB55 packaging machine of the present utility model is realized by adopting the following design structure and the following technical solutions:

[0010] An overload protection device for the double-link push rod of the YB55 packaging machine, which includes:

[0011] A fixed swing rod (1), an installation groove (11) is opened in the fixed swing rod (1) along the thickness direction, and the non-installation groove end of the fixed swing rod (1) is connected to the first connecting shaft (51) of the equipment (5);

[0012] A connecting swing rod (2), one section of the connecting swing rod (2) is slidably installed in the installation groove (11);

[0013] A limiting component (3), the limiting component (3) is arranged at the installation groove of the fixed swing rod (1) near the first connecting shaft (51) end;

[0014] A connection assembly (4), the connection assembly (4) being arranged at a mounting groove of the fixed swing rod (1) close to an end of the connecting swing rod (2);

[0015] One end of the mounting section of the connecting rocker arm (2) is rotatably connected to the limiting assembly (3), and the other end of the mounting section of the connecting rocker arm (2) is snap-connected to the connecting assembly (4).

[0016] Preferably, the fixed swing arm (1) is provided with a fixed swing arm limiting hole (12) extending through the fixed swing arm (1) along its thickness direction, and the fixed swing arm limiting hole (12) is located at the fixed swing arm (1) mounting groove (11) close to the end of the first connecting shaft (51);

[0017] A plurality of fixed rocker rod locking threaded holes (13) communicating with the fixed rocker rod limiting holes (12) are also provided on one side of the fixed rocker rod (1);

[0018] The fixed swing arm limiting hole (12) is connected to the mounting groove (11).

[0019] Preferably, a steel ball connection hole (14) and a spring piece connection hole (15) are sequentially provided at the lower portion of the non-fixed rocker limit hole (12) end of the fixed rocker (1).

[0020] Preferably, the steel ball connection hole (14) is opened through the lower bottom plate of the mounting groove of the fixed swing rod (1), and the steel ball connection hole (14) is connected to the mounting groove (11);

[0021] There is at least one spring-type connection hole (15), which is a spring-type connection threaded hole.

[0022] Preferably, the connecting rocker arm (2) is in the form of a rectangular plate as a whole, a connecting plate rotation hole (21) is provided through one end of the connecting rocker arm (2) installation section, and a connecting plate connection hole (22) is provided through the other end, wherein a connecting groove (23) is provided through the non-installation section of the connecting rocker arm (2).

[0023] Preferably, the limiting component (3) comprises:

[0024] A latch (31), the latch (31) being movably connected in a fixed swing rod limiting hole (12);

[0025] The tightening member (32) is respectively threadedly connected in the locking threaded holes (13) of the fixed swing rods and is used to lock the fixed latch pin (31).

[0026] Preferably, the engagement assembly (4) comprises:

[0027] A steel ball (41), the steel ball (41) is movably connected in the steel ball connecting hole (14);

[0028] A spring piece (42), the spring piece (42) being located at the lower end of the mounting groove (11);

[0029] A locking member (43), the locking member (43) passes through the spring sheet (42) and is threadedly connected in the spring sheet connecting hole (15);

[0030] The spring sheet (42) is used to press the steel ball (41) into the steel ball connecting hole (14).

[0031] Preferably, the upper end of the steel ball (41) is clamped in the connecting hole (22) of the connecting plate, and the lower end of the steel ball (41) is connected to the spring sheet (42);

[0032] The spring sheet (42) is provided with a spring sheet through hole corresponding to the spring sheet connection hole (15).

[0033] The working principle is as follows: when in use, when cigarette squeezing occurs, the fixed swing arm (1) and the connecting swing arm (2) of the overload protection device will be disengaged, and the fixed swing arm (1) connected to the device (5) will continue to swing under the drive of the first connecting shaft (51), while one end of the connecting swing arm (2) will hardly swing after being separated from the fixed swing arm (1), and the package pushing rod connecting shaft (53) connected to the connecting swing arm (2) through the connecting member (54) will no longer swing, thereby causing the front package pushing rod (55) and the rear package pushing rod (56) connected to the package pushing rod connecting shaft (53) to also not swing. When the package pushing time preset by the control device is exceeded, the machine will stop and send a stop signal, and the stop information of "double package pushing rods blocked" will be displayed on the display screen, and then the operator can reset and debug the connecting swing arm (2) and the fixed swing arm (1).

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] 1. The utility model has a simple structure and an ingenious design. When the double-push pack rod squeezes cigarettes during the normal operation of the equipment, the fixed swing rod itself will not be misplaced, and only the connecting swing rod will be disengaged, which is convenient for subsequent adjustment and maintenance;

[0036] 2. After the operator has dealt with the equipment blockage, the utility model can quickly reset the connecting swing rod by turning the equipment, thereby improving maintenance efficiency and saving time;

[0037] 3. The utility model can prevent the misalignment of the double-push rods caused by cigarette jams, and avoid the tedious work of opening the box and re-adjusting the phase due to the misalignment of the original push rods;

[0038] 4. The utility model is easy to disassemble and assemble, stable and reliable, and can save time for adjusting the phase of the double push rods, thereby improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0040] Figure 1 This is one of the use state diagrams of the utility model;

[0041] Figure 2 This is the second usage state diagram of the utility model;

[0042] Figure 3 This is the third use state diagram of the utility model;

[0043] Figure 4 It is one of the overall structural schematic diagrams of the utility model;

[0044] Figure 5 This is the second schematic diagram of the overall structure of the utility model;

[0045] Figure 6 This is the third schematic diagram of the overall structure of the utility model;

[0046] Figure 7 It is an exploded view of the overall structure of the utility model;

[0047] Figure 8 It is a cross-sectional schematic diagram of the utility model;

[0048] Fig. 9 This is the fourth use state diagram of the utility model;

[0049] Among them, the numbers in the figure are: 1-fixed swing rod, 11-installation groove, 12-fixed swing rod limit hole; 13-fixed swing rod locking threaded hole, 14-steel ball connection hole, 15-spring clip connection hole;

[0050] 2—connecting swing rod, 21—connecting plate rotation hole, 22—connecting plate connection hole, 23—connecting groove;

[0051] 3—limiting assembly, 31—latch pin, 32—tightening member;

[0052] 4—connection assembly, 41—steel ball, 42—spring, 43—locking piece;

[0053] 5—equipment, 51—first connecting shaft, 52—guide plate, 53—pushing rod connecting shaft, 54—connecting piece, 55—front pushing rod, 56—rear pushing rod. DETAILED DESCRIPTION

[0054] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0055] As the instruction manual Figure 1 To the instruction manual Fig. 9 A double push rod overload protection device for a YB55 packaging machine is shown, which comprises:

[0056] A fixed swing rod 1, wherein a mounting groove 11 is provided on the fixed swing rod 1 along the thickness direction, and a non-mounting groove end of the fixed swing rod 1 is connected to a first connecting shaft 51 of the device 5;

[0057] Connecting the swing rod 2, a section of the connecting swing rod 2 is slidably installed in the installation groove 11;

[0058] A limit assembly 3, the limit assembly 3 is arranged at a mounting groove of the fixed swing arm 1 close to the end of the first connecting shaft 51;

[0059] A connection component 4, which is arranged at a mounting groove of the fixed swing rod 1 close to the end of the connecting swing rod 2;

[0060] Among them, one end of the installation section of the connecting rocker arm 2 is rotatably connected to the limiting component 3, and the other end of the installation section of the connecting rocker arm 2 is clamped and connected to the connecting component 4.

[0061] In the present invention, the installation section of the connecting rocker arm 2 is the section of the connecting plate installed in the installation groove.

[0062] Further, such as Figure 7 As shown, the fixed swing rod 1 is provided with a fixed swing rod limiting hole 12 along the thickness direction thereof, and the fixed swing rod limiting hole 12 is located at the fixed swing rod 1 mounting groove 11 close to the end of the first connecting shaft 51;

[0063] A plurality of fixed rocker locking threaded holes 13 connected to the fixed rocker limiting holes 12 are also provided on one side of the fixed rocker 1;

[0064] The fixed swing arm limiting hole 12 is connected to the mounting groove 11 .

[0065] In the utility model, the installation groove 11 is opened along the middle of the thickness of one end of the fixed rocker arm 1 toward the end of the first connecting shaft 51, and the installation groove 11 is opened through the width direction of the fixed rocker arm 1, wherein the non-installation groove end of the fixed rocker arm 1 is provided with a mounting portion adapted to the first connecting shaft 51.

[0066] Specifically, Figure 7As shown, a steel ball connection hole 14 and a spring piece connection hole 15 are sequentially opened at the lower part of the non-fixed rocker limit hole 12 of the fixed rocker 1.

[0067] Specifically, Figure 7 As shown, the steel ball connecting hole 14 is opened through the lower bottom plate of the mounting groove of the fixed swing rod 1, and the steel ball connecting hole 14 is connected to the mounting groove 11;

[0068] There is at least one spring connection hole 15, and the spring connection hole 15 is a spring connection threaded hole.

[0069] In the present invention, the threaded hole for connecting the spring piece does not penetrate the lower bottom plate of the mounting groove for fixing the swing rod 1 .

[0070] Further, such as Figure 7 As shown, the connecting rocker 2 is a rectangular plate-shaped structure as a whole, a connecting plate rotation hole 21 is opened through one end of the connecting rocker 2 installation section, and a connecting plate connection hole 22 is opened at the other end, wherein a connecting groove 23 is opened through the non-installation section of the connecting rocker 2.

[0071] In the utility model, arc chamfers are provided at both ends of the connecting rocker 2; the connecting groove 23 is used to connect with the guide plate 52 on the device 5 through the connecting piece 54; the upper part of the connecting piece 54 is slidably connected in the guide plate 52, and the lower part of the connecting piece 54 is connected to the connecting shaft 53 of the package pushing rod, wherein one end of the connecting piece 54 is inserted into the connecting groove 23 and is located between the guide plate 52 and the connecting shaft 53 of the package pushing rod.

[0072] Specifically, Figure 7 As shown, the limiting component 3 includes:

[0073] A latch 31, the latch 31 is movably connected in the fixed swing rod limiting hole 12;

[0074] The jacking piece 32 is threadedly connected in each of the locking threaded holes 13 of the fixed rocker rods to lock the fixed pin 31 .

[0075] Specifically, Figure 7 As shown, the connection component 4 includes:

[0076] A steel ball 41, the steel ball 41 is movably connected in the steel ball connecting hole 14;

[0077] The spring piece 42 is located at the lower end of the mounting groove 11;

[0078] A locking member 43, the locking member 43 passes through the spring sheet 42 and is threadedly connected in the spring sheet connecting hole 15;

[0079] The spring piece 42 is used to press the steel ball 41 into the steel ball connecting hole 14 .

[0080] In the utility model, when the connecting swing rod 2 is overloaded, the connecting swing rod 2 presses the steel ball 41, and the steel ball 41 overcomes the pressure of the spring sheet 42 and moves downward, so that the connecting swing rod 2 is disengaged from the steel ball 41, and the fixed swing rod 1 continues to rotate under the drive of the first connecting shaft 51, and the connecting swing rod 2 stops rotating after being separated from the steel ball 41, and the push rod connecting shaft 53 connected to one end of the connecting swing rod 2 by the connecting piece 54 does not move, and the front and rear push rods at both ends of the push rod connecting shaft 53 also do not move, thereby playing a protective role.

[0081] Specifically, the upper end of the steel ball 41 is clamped in the connecting hole 22 of the connecting plate, and the lower end of the steel ball 41 is connected to the spring piece 42;

[0082] The spring sheet 42 is provided with a spring sheet through hole corresponding to the spring sheet connecting hole 15 .

[0083] In the present invention, the diameter of the steel ball 41 is larger than the thickness of the bottom plate of the fixing swing rod 1 installation groove or higher than the height of the steel ball connecting hole 14 ; one end of the spring piece 42 is also provided with a recessed clamping portion adapted to connect with the steel ball 41 .

[0084] In summary, a more specific implementation method of the present invention is:

[0085] The YB55 packaging machine double push rod overload protection device of the above-mentioned design structure needs to be installed as a backup before use.

[0086] The specific installation steps are:

[0087] First, the operator inserts the mounting section of the connecting rocker 2 into the mounting groove 11 of the fixed rocker 1, so that the rotating hole 21 of the connecting plate is aligned with the limiting hole 12 of the fixed rocker;

[0088] Then, the operator inserts the latch 31 to connect the fixed swing rod 1 and the connecting swing rod 2 together, and then locks and fixes the latch 31 on the fixed swing rod 1 through the tightening member 32;

[0089] Next, the operator places the installation surface of the limit assembly 3 of the fixed swing rod 1 upward, and then puts the steel ball 41 into the steel ball connecting hole 14. Then, the operator aligns the spring through hole of the spring sheet 42 with the spring connecting hole 15, and then locks the spring sheet 42 to the bottom plate of the installation groove of the fixed swing rod 1 through the locking member 43;

[0090] Then, the operator adjusts the connecting swing rod 2 so that the connecting plate connection hole 22 is clamped on the steel ball 41, and the connection and installation of the fixed swing rod 1 and the connecting swing rod 2 are completed;

[0091] Finally, the operator installs the mounting portion of the fixed rocker arm 1 on the first connecting shaft 51, and installs the connecting member passing through the connecting groove 23 of the connecting rocker arm 2 on the guide plate 52, thus completing the installation of the device on the equipment 5.

[0092] The specific steps are:

[0093] When the device 5 is in normal operation, due to unexpected reasons, cigarette packs with unqualified appearance may occasionally appear. When cigarette packs with deformed appearance pass through the YB55 transparent paper packaging machine, loose cigarette packs will be produced. Sometimes, when the deformation or loose packs are serious, they will not fall on time due to gravity, and the octagonal turret will start to rotate. At this time, the bad cigarette packs will flow to the next process. When the octagonal turret is transferred to the entrance of the CT strip packaging machine, the front push rod 55 will push the cigarette packs into the CT packaging machine. Since the bad cigarette packs are not removed cleanly, the front push rod 55 will cause a blockage when pushing;

[0094] When the resistance is too large, due to the overload protection device of the utility model, after the connecting swing rod 2 squeezes the steel ball 41, one end of the connecting swing rod 2 comes out of the installation groove 11. At this time, the fixed swing rod 1 on the first connecting shaft 51 continues to rotate, while the connecting swing rod 2 stops rotating after being separated from the steel ball 41. The package pushing rod connecting shaft 53 connected to one end of the connecting swing rod 2 through the connecting member 54 does not move, and the front and rear package pushing rods at both ends of the package pushing rod connecting shaft 53 do not move. When the package pushing time preset by the control device is exceeded, the machine will stop and send a stop signal.

[0095] After the blockage fault is handled, the fixed rocker arm 1 and the connecting rocker arm 2 are misaligned. The maintenance personnel can readjust and reset the fixed rocker arm 1 and the connecting rocker arm 2 so that they can be used normally. The operator only needs to rotate the connecting rocker arm 2 and move the connecting rocker arm 2 to the installation groove 11. The connecting rocker arm 2 will press down the steel ball 41 until the steel ball 41 is stuck in the connecting hole 22 of the connecting plate. The maintenance and adjustment work of the fixed rocker arm 1 and the connecting rocker arm 2 is completed. The maintenance and adjustment work is fast and efficient, saving time and effort.

[0096] When the front pack pushing rod 55 is overloaded during cigarette squeezing, the position of the existing swing arm relative to the first connecting shaft 51 will change, because the existing swing arm is clamped on the first connecting shaft 51 with an 8MM screw. When the overload force exceeds the clamping force, the relative position will change, which is the misalignment mentioned in the background technology. If the existing swing arm is damaged, it is necessary to remove the first connecting shaft 51 for replacement in order to replace the swing arm, which is very labor-intensive. The utility model designs the existing swing arm into a split structure. When the connecting swing arm 2 of the overload protection device is damaged and needs to be replaced, it is only necessary to remove the pin 31 of the limit assembly 3, and then only replace the connecting swing arm 2. The fixed swing arm 1 connected to the first connecting shaft 51 at the back does not need to be replaced, which greatly saves maintenance time and material loss.

[0097] Finally, it should be noted that the above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A double push rod overload protection device for a YB55 packaging machine, characterized in that: It includes: A fixed swing rod (1), wherein a mounting groove (11) is provided on the fixed swing rod (1) along the thickness direction, and the non-mounting groove end of the fixed swing rod (1) is connected to a first connecting shaft (51) of the device (5); A connecting swing rod (2), wherein a section of the connecting swing rod (2) is slidably mounted in the mounting groove (11); A limit assembly (3), the limit assembly (3) being arranged at a mounting groove of the fixed swing arm (1) close to an end of the first connecting shaft (51); A connection assembly (4), the connection assembly (4) being arranged at a mounting groove of the fixed swing rod (1) close to an end of the connecting swing rod (2); One end of the mounting section of the connecting rocker arm (2) is rotatably connected to the limiting assembly (3), and the other end of the mounting section of the connecting rocker arm (2) is snap-connected to the connecting assembly (4).

2. According to claim 1, a YB55 packaging machine double push rod overload protection device is characterized in that: The fixed swing arm (1) is provided with a fixed swing arm limiting hole (12) along the thickness direction thereof, and the fixed swing arm limiting hole (12) is located at the fixed swing arm (1) installation groove (11) close to the end of the first connecting shaft (51); A plurality of fixed rocker rod locking threaded holes (13) communicating with the fixed rocker rod limiting holes (12) are also provided on one side of the fixed rocker rod (1); The fixed swing arm limiting hole (12) is connected to the mounting groove (11).

3. A YB55 packaging machine double push rod overload protection device according to claim 1, characterized in that: A steel ball connection hole (14) and a spring piece connection hole (15) are sequentially provided at the lower part of the non-fixed rocker limit hole (12) end of the fixed rocker (1).

4. A YB55 packaging machine double push rod overload protection device according to claim 3, characterized in that: The steel ball connection hole (14) is opened through the lower bottom plate of the installation groove of the fixed swing rod (1), and the steel ball connection hole (14) is connected to the installation groove (11); There is at least one spring-type connection hole (15), and the spring-type connection hole (15) is a spring-type connection threaded hole.

5. A YB55 packaging machine double push rod overload protection device according to claim 1, characterized in that: The connecting rocker (2) is in the form of a rectangular plate as a whole, with a connecting plate rotation hole (21) extending through one end of the connecting rocker (2) installation section and a connecting plate connection hole (22) extending through the other end, wherein a connecting groove (23) is extending through the non-installation section of the connecting rocker (2).

6. A YB55 packaging machine double push rod overload protection device according to claim 1, characterized in that: The limiting component (3) comprises: A latch (31), the latch (31) being movably connected in a fixed swing rod limiting hole (12); The tightening member (32) is respectively threadedly connected in the locking threaded holes (13) of the fixed swing rods and is used to lock the fixed latch pin (31).

7. A YB55 packaging machine double push rod overload protection device according to claim 1, characterized in that: The connection assembly (4) comprises: A steel ball (41), the steel ball (41) is movably connected in the steel ball connecting hole (14); A spring piece (42), the spring piece (42) being located at the lower end of the mounting groove (11); A locking member (43), the locking member (43) passes through the spring sheet (42) and is threadedly connected in the spring sheet connecting hole (15); The spring sheet (42) is used to press the steel ball (41) into the steel ball connecting hole (14).

8. A YB55 packaging machine double push rod overload protection device according to claim 7, characterized in that: The upper end of the steel ball (41) is clamped in the connecting hole (22) of the connecting plate, and the lower end of the steel ball (41) is connected to the spring sheet (42); The spring sheet (42) is provided with a spring sheet through hole corresponding to the spring sheet connection hole (15).

Images