Bag clamping device of packaging machine

Abstract

The utility model relates to the technical field of packaging machines, and provides a bag clamping device of a packaging machine, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a supporting plate, the side face of the supporting plate is provided with an automatic bag clamping assembly, the automatic bag clamping assembly comprises a rectangular plate, the top of the rectangular plate is fixedly connected to the bottom of the supporting plate, and the bottom of the rectangular plate is provided with a bag clamping groove. A motor is fixedly connected to the side face of the rectangular plate, a two-way lead screw is fixedly connected to an output shaft of the motor, a threaded sleeve is in threaded connection to the circumferential face of the two-way lead screw, a connecting rod is fixedly connected to the bottom of the threaded sleeve, and a telescopic rod is fixedly connected to the end, away from the threaded sleeve, of the connecting rod. A clamping plate is fixedly connected to one end of the telescopic rod, a limiting rod is fixedly connected to the side face of the motor, and the end, away from the motor, of the limiting rod penetrates through the side face of the threaded sleeve. By means of the technical scheme, the problems that in the prior art, it cannot be guaranteed that the two ends of a bag can be firmly clamped, and packaging precision cannot be improved are solved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, specifically to a bag clamping device for a packaging machine. Background Technology

[0002] A bag clamping device in a packaging machine is a piece of equipment used on a packaging production line to fill and seal items into bags. The core function of the bag clamping device is to hold the bag in place, ensuring the bag opening does not slip during the filling process, thus guaranteeing a smooth packaging process. Bag clamping devices are widely used in automated packaging systems in industries such as food, chemicals, pharmaceuticals, and daily necessities.

[0003] According to a public disclosure of a bag clamping device for a packaging machine (Publication No.: CN 207374793 U), it includes a power unit and a bag clamping device body. The power unit includes a motor, a swing arm, a short pull rod, a long pull rod, a support block, a deflector rod, a pull rod, a platform, and a bracket. The motor includes a rotating shaft. One end of the swing arm is fixedly connected to a sleeve shaft, and the sleeve shaft is keyed to the rotating shaft of the motor. The other end of the swing arm is connected to one end of the short pull rod and one end of the long pull rod through a pin. The other end of the short pull rod is connected to one end of the deflector rod through a pin. The support block and the deflector rod are connected through bearings.

[0004] In the aforementioned application, the cooperation between components such as the swing arm, short pull rod, and long pull rod makes it difficult to ensure that both ends of the bag can be firmly clamped and improve packaging accuracy. This increases the risk of bag damage or items falling during the packaging process and needs to be improved. Utility Model Content

[0005] This utility model proposes a bag clamping device for a packaging machine, which solves the problems mentioned in the above documents.

[0006] The technical solution of this utility model is as follows: A bag clamping device for a packaging machine includes a base plate, a support plate fixedly connected to the top of the base plate, an automatic bag clamping assembly provided on the side of the support plate, the automatic bag clamping assembly including a rectangular plate, the top of the rectangular plate fixedly connected to the bottom of the support plate, a motor fixedly connected to the side of the rectangular plate, a bidirectional lead screw fixedly connected to the output shaft of the motor, a threaded sleeve threadedly connected to the circumferential surface of the bidirectional lead screw, a connecting rod fixedly connected to the bottom of the threaded sleeve, and a connecting rod fixedly connected to the end of the connecting rod away from the threaded sleeve. A telescopic rod is provided, with a clamping plate fixedly connected to one end. A limit rod is fixedly connected to the side of the motor, with the end of the limit rod away from the motor passing through the side of the threaded sleeve. A crossbar is fixedly connected to the side of the support plate, and a bracket is fixedly connected to the top of the crossbar. A turntable is rotatably connected to the inner wall of the bracket. A short rod is fixedly connected to the circumference of the turntable, and a triangular block is fixedly connected to the top of the short rod. A support plate is fixedly connected to the circumference of the turntable. A vertical rod is fixedly connected to the side of the threaded sleeve, and a pressing block is fixedly connected to the side of the vertical rod.

[0007] Furthermore, a switch is provided on the side of the motor, and two connecting rods and clamping plates are provided, which are symmetrical to each other along the vertical central axis of the bidirectional lead screw. A handle is fixedly connected to the side of the clamping plate. The handle is designed to facilitate adjustment of the opening size of the clamping plate, and the switch is designed to facilitate direct control of the motor.

[0008] Furthermore, a placement frame is fixedly connected to the side of the support plate, and a spring is fixedly connected to the side of the connecting rod. The end of the spring away from the connecting rod is fixedly connected to the side of the clamping plate. The design of the spring facilitates the adjustment of the opening size of the clamping plate and allows the opening size of the clamping plate to automatically reset.

[0009] Furthermore, the triangular block is located on the displacement trajectory of the extrusion block, the tray is located on the side of the support plate, and the tray is located at the bottom of the clamping plate. This design is beneficial for lifting the bag from the bottom using the tray when the clamping plate holds the bag.

[0010] Furthermore, a support plate is fixedly connected to the side of the bracket, and a second spring is fixedly connected to the top of the support plate. The end of the second spring away from the support plate is fixedly connected to the bottom of the support plate. The design of the second spring facilitates the automatic reset of the support plate when the turntable is not squeezed.

[0011] Furthermore, the top of the support plate is provided with an anti-resistance device, which includes a trigger rod. One end of the trigger rod is fixedly connected to the side of the threaded sleeve. A setting box is fixedly connected to the top of the support plate. A long strip plate is fixedly connected to the inner wall of the setting box. A sliding plate is slidably connected to the inner wall of the setting box. A thin rod is fixedly connected to the side of the sliding plate. An oil outlet pipe passes through the side of the setting box. The lubricating oil flowing out of the setting box lubricates the bidirectional lead screw, preventing jamming during the clamping and adjustment process of the clamping plate.

[0012] Furthermore, a contact plate is fixedly connected to the end of the thin rod away from the sliding plate, and the end of the oil outlet pipe away from the setting box is located at the top of the bidirectional lead screw. The design of the contact plate increases the contact area between the trigger rod and the thin rod.

[0013] Furthermore, two long strips are provided and are symmetrical to each other along the vertical central axis of the sliding plate. A drain pipe runs through the side of the setting box, and a circular can runs through the end of the drain pipe away from the setting box. The circular can is used to store lubricating oil to facilitate lubrication of the bidirectional lead screw.

[0014] Furthermore, a supplementary tube passes through the top of the circular tank, the contact plate is located on the displacement trajectory of the trigger rod, and a cylindrical rod is fixedly connected to the inner wall of the setting box. The end of the cylindrical rod away from the setting box passes through the side of the sliding plate. The design of the cylindrical rod facilitates the limiting of the sliding plate and prevents the displacement of the sliding plate from deviating.

[0015] Furthermore, a spring three is fixedly connected to the inner wall of the setting box, and the end of the spring three away from the setting box is fixedly connected to the side of the sliding plate. The setting of the spring three facilitates the automatic reset of the sliding plate when it is not squeezed.

[0016] The working principle and beneficial effects of this utility model are as follows:

[0017] 1. In this utility model, the automatic bag clamping assembly utilizes the interplay of components such as the motor, bidirectional lead screw, threaded sleeve, and connecting rod to achieve precise and synchronous relative movement between the two connecting rods and the clamping plate through the operation of the bidirectional lead screw and threaded sleeve. This ensures that the clamping plate moves accurately and smoothly in the same direction during bag clamping, guaranteeing that both ends of the bag are firmly clamped and improving packaging accuracy. During loading, the pallet design, through the coordinated action of the turntable and short rod, ensures that the bottom of the bag is supported, preventing the bag from falling due to gravity or other factors during loading, unloading, or transportation. This design effectively avoids the risk of bag damage or item drop during packaging, improving operational safety. Through the linkage of the motor and mechanical structure, the entire bag clamping process can be completed automatically, reducing the need for human intervention. This makes the packaging process more automated, improves production efficiency, and reduces labor costs and the risk of operational errors.

[0018] 2. In this utility model, through the cooperation of components such as the internal setting box, extrusion rod, oil outlet pipe, and thin rod of the anti-resistance device, the flowing lubricating oil can be directly dripped onto the bidirectional lead screw for lubrication, preventing resistance and jamming when the threaded sleeve, connecting rod, and clamping plate move. The contact plate is driven by the touch rod, and the movement of the sliding plate creates a gap that allows the lubricating oil to flow smoothly into the lubrication area, ensuring that the lubricating oil can be evenly distributed to key parts such as the bidirectional lead screw. This lubrication method makes the relative movement of related moving parts smoother, reduces frictional resistance, improves the working efficiency of the equipment, and avoids jamming caused by insufficient lubrication. The continuous lubrication system can ensure that the device remains stable during long-term, high-frequency operation, effectively dissipates heat, reduces the operating temperature of the system, and thus ensures the stability of the mechanical system under high-intensity working environments. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model;

[0021] Figure 2 This is a three-dimensional side view of the rectangular plate structure of this utility model;

[0022] Figure 3 This is a three-dimensional enlarged structural diagram of the motor part of this utility model;

[0023] Figure 4 This utility model Figure 2 A three-dimensional magnified structural diagram of A in the middle;

[0024] Figure 5This is a three-dimensional cross-sectional view of the box structure of this utility model.

[0025] In the diagram: 1. Base plate; 2. Support plate; 3. Automatic bag clamping assembly; 31. Rectangular plate; 32. Motor; 33. Switch; 34. Two-way lead screw; 35. Threaded sleeve; 36. Limiting rod; 37. Connecting rod; 38. Telescopic rod; 39. Spring 1; 310. Clamping plate; 311. Handle; 312. Placement rack; 313. Vertical rod; 314. Squeezing block; 315. Horizontal rod; 316. Bracket; 317. Turntable; 318. Short rod; 319. Triangular block; 320. Support plate; 321. Support plate; 322. Spring 2; 4. Anti-resistance device; 41. Touch rod; 42. Setting box; 43. Long strip plate; 44. Sliding plate; 45. Cylindrical rod; 46. Spring 3; 47. Oil outlet pipe; 48. Circular tank; 410. Thin rod; 411. Contact plate; 412. Replenishment pipe. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1

[0028] like Figures 1-3 As shown, this embodiment proposes a bag clamping device for a packaging machine, including a base plate 1. A support plate 2 is fixedly connected to the top of the base plate 1. An automatic bag clamping assembly 3 is provided on the side of the support plate 2. The automatic bag clamping assembly 3 includes a rectangular plate 31. The top of the rectangular plate 31 is fixedly connected to the bottom of the support plate 2. A motor 32 is fixedly connected to the side of the rectangular plate 31. A bidirectional lead screw 34 is fixedly connected to the output shaft of the motor 32. A threaded sleeve 35 is threadedly connected to the circumferential surface of the bidirectional lead screw 34. A connecting rod 37 is fixedly connected to the bottom of the threaded sleeve 35. A telescopic rod 38 is fixedly connected to the end of the connecting rod 37 away from the threaded sleeve 35. One end of the telescopic rod 38 is fixedly connected to the telescopic rod 38. A clamping plate 310 is fixedly connected to the side of the motor 32. A limit rod 36 is fixedly connected to the side of the motor 32. The end of the limit rod 36 away from the motor 32 passes through the side of the threaded sleeve 35. A crossbar 315 is fixedly connected to the side of the support plate 2. A bracket 316 is fixedly connected to the top of the crossbar 315. A turntable 317 is rotatably connected to the inner wall of the bracket 316. A short rod 318 is fixedly connected to the circumference of the turntable 317. A triangular block 319 is fixedly connected to the top of the short rod 318. A support plate 320 is fixedly connected to the circumference of the turntable 317. A vertical rod 313 is fixedly connected to the side of the threaded sleeve 35. A pressing block 314 is fixedly connected to the side of the vertical rod 313.

[0029] A switch 33 is provided on the side of the motor 32. There are two connecting rods 37 and clamping plates 310, which are symmetrical to each other along the vertical central axis of the bidirectional lead screw 34. A handle 311 is fixedly connected to the side of the clamping plate 310. The handle 311 is designed to facilitate the adjustment of the opening size of the clamping plate 310. The switch 33 is designed to facilitate direct control of the motor 32.

[0030] A placement rack 312 is fixedly connected to the side of the support plate 2, and a spring 39 is fixedly connected to the side of the connecting rod 37. The end of the spring 39 away from the connecting rod 37 is fixedly connected to the side of the clamping plate 310. The design of the spring 39 makes it easy to adjust the opening size of the clamping plate 310 and allows the opening size of the clamping plate 310 to automatically reset.

[0031] The triangular block 319 is located on the displacement trajectory of the extrusion block 314, the tray 320 is located on the side of the support plate 2, and the tray 320 is located at the bottom of the clamping plate 310. This design is beneficial to use the tray 320 to lift the bag from the bottom when the clamping plate 310 clamps the bag.

[0032] A support plate 321 is fixedly connected to the side of the bracket 316, and a spring 322 is fixedly connected to the top of the support plate 321. The end of the spring 322 away from the support plate 321 is fixedly connected to the bottom of the support plate 320. The design of the spring 322 makes it convenient for the support plate 320 to automatically reset when the turntable 317 is not squeezed.

[0033] In this embodiment, pressing switch 33 activates the motor 32, which in turn rotates the bidirectional lead screw 34. When the motor 32 rotates forward, it drives the bidirectional lead screw 34 to rotate forward as well. This forward rotation causes the two threaded sleeves 35 and the two connecting rods 37 to move relative to each other, moving the connecting rods 37 in the same direction. This relative movement of the two connecting rods 37 causes the two clamping plates 310 to move relative to each other, allowing them to move in the same direction. When the two clamping plates 310 move in the same direction, the two ends of the bag can be clamped in the middle position, and the bag can be placed using a placement rack. 312 can support relatively hard bags, while softer bags are clamped by the relative movement of two clamping plates 310. The telescopic rod 38 and spring 39 can adjust the size of the opening of the clamping plate 310. The handle 311 is pulled to adjust the size to suit different sized bags. The relative movement of the threaded sleeve 35 will drive the vertical rod 313 and the squeezing block 314 to move. The triangular block 319 is located on the movement trajectory of the squeezing block 314. Due to the influence of the inclined plane, when the squeezing block 314 squeezes the triangular block 319, it will squeeze the triangular block 319 and the short rod 318 downward and rotate them. The short rod 318 rotates downward. The movement causes the turntable 317 to rotate downwards. As the turntable 317 rotates downwards, the support plate 320 on the other side rotates upwards, supporting the bottom of the bag and preventing it from falling during loading. Through the operation of the bidirectional lead screw 34 and the threaded sleeve 35, the two connecting rods 37 and the clamping plate 310 can move precisely and synchronously relative to each other. This ensures that the clamping plate 310 moves accurately and smoothly in the same direction while clamping the bag. This design reduces the deviations and instabilities that may occur with traditional clamping methods, ensuring... The bag can be firmly clamped at both ends, improving packaging accuracy. During loading, the pallet 320, through the coordinated action of the turntable 317 and the short rod 318, ensures that the bottom of the bag is supported, preventing the bag from falling due to gravity or other factors during loading, unloading, or transportation. This design effectively avoids the risk of bag damage or items falling during packaging, improving operational safety. Through the linkage of the motor 32 and the mechanical structure, the entire bag clamping process can be completed automatically, reducing the need for human intervention. This makes the packaging process more automated, improves production efficiency, and reduces labor costs and the risk of operational errors.

[0034] Example 2

[0035] like Figures 3-5As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes another embodiment. The top of the support plate 2 is provided with an anti-resistance device 4. The anti-resistance device 4 includes a trigger rod 41. One end of the trigger rod 41 is fixedly connected to the side of the threaded sleeve 35. The top of the support plate 2 is fixedly connected with a setting box 42. A long strip plate 43 is fixedly connected to the inner wall of the setting box 42. A sliding plate 44 is slidably connected to the inner wall of the setting box 42. A thin rod 410 is fixedly connected to the side of the sliding plate 44. An oil outlet pipe 47 passes through the side of the setting box 42. The lubricating oil flowing out of the setting box 42 lubricates the bidirectional lead screw 34 and prevents jamming during the clamping and adjustment process of the clamping plate 310.

[0036] The end of the thin rod 410 away from the sliding plate 44 is fixedly connected to the contact plate 411, and the end of the oil outlet pipe 47 away from the setting box 42 is located at the top of the bidirectional lead screw 34. The design of the contact plate 411 increases the contact area between the trigger rod 41 and the thin rod 410.

[0037] Two long strips 43 are provided and are symmetrical to each other along the vertical central axis of the sliding plate 44. A drain pipe runs through the side of the set box 42. A circular can 48 runs through the end of the drain pipe away from the set box 42. The circular can 48 is used to store lubricating oil to facilitate lubrication of the bidirectional lead screw 34.

[0038] A replenishment pipe 412 passes through the top of the circular tank 48. The contact plate 411 is located on the displacement trajectory of the trigger rod 41. A cylindrical rod 45 is fixedly connected to the inner wall of the setting box 42. The end of the cylindrical rod 45 away from the setting box 42 passes through the side of the sliding plate 44. The design of the cylindrical rod 45 facilitates the limiting of the sliding plate 44 and prevents the displacement of the sliding plate 44 from deviating.

[0039] A spring 46 is fixedly connected to the inner wall of the set box 42. The end of the spring 46 away from the set box 42 is fixedly connected to the side of the sliding plate 44. The spring 46 is designed so that the sliding plate 44 can automatically reset when it is not being squeezed.

[0040] In this embodiment, the relative movement of the threaded sleeve 35 causes the actuating rod 41 to move. The contact plate 411 is located on the movement trajectory of the actuating rod 41. When the actuating rod 41 moves, it presses against the contact plate 411, causing it to move into the housing 42. Simultaneously, it moves the thin rod 410 into the housing 42. The movement of the thin rod 410 causes the sliding plate 44 to move, creating an opening in the middle of the two long strips 43 that were originally sealed. This allows the lubricating oil, which is transferred from the circular canister 48 into the left side of the housing 42, to flow through this opening to the right side of the housing 42. Since the oil outlet pipe 47 is located on the right side of the housing 42, with the end of the oil outlet pipe 47 furthest from the housing 42 at the top of the bidirectional screw 34, the flowing lubricating oil can drip directly onto the bidirectional screw 34 for lubrication and to prevent thread damage. When the sleeve 35, connecting rod 37, and clamping plate 310 move, resistance and jamming occur. The contact plate 41 is driven by the trigger rod 41, and finally the sliding plate 44 moves. The resulting gap allows lubricating oil to flow smoothly into the lubrication area, ensuring that the lubricating oil can be evenly distributed to key parts such as the double-acting screw 34. This lubrication method makes the relative movement of related moving parts smoother, reduces frictional resistance, improves the working efficiency of the equipment, and avoids jamming caused by insufficient lubrication. The continuous lubrication system can ensure that the device remains stable during long-term, high-frequency operation. When the packaging machine processes a large number of packaging bags, its bag clamping device may need to perform continuous movement and operation. Without proper lubrication, long-term operation will cause mechanical parts to overheat or deform. Lubricating oil can effectively disperse heat and reduce the operating temperature of the system, thereby ensuring the stability of the mechanical system in high-intensity working environments.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bag clamping device of a packaging machine, characterized in that, Including the bottom plate (1), the top of the bottom plate (1) is fixedly connected with the supporting plate (2), and the side of the supporting plate (2) is provided with an automatic bag clamping assembly (3); The automatic bag clamping assembly (3) comprises a rectangular plate (31), the top of the rectangular plate (31) is fixedly connected to the bottom of the supporting plate (2), the side of the rectangular plate (31) is fixedly connected with a motor (32), the output shaft of the motor (32) is fixedly connected with a bidirectional screw rod (34), the circumferential surface of the bidirectional screw rod (34) is threadedly connected with a threaded sleeve (35), the bottom of the threaded sleeve (35) is fixedly connected with a connecting rod (37), one end of the connecting rod (37) away from the threaded sleeve (35) is fixedly connected with a telescopic rod (38), one end of the telescopic rod (38) is fixedly connected with a clamping plate (310), the side of the motor (32) is fixedly connected with a limiting rod (36), one end of the limiting rod (36) away from the motor (32) penetrates through the side of the threaded sleeve (35), the side of the supporting plate (2) is fixedly connected with a cross rod (315), the top of the cross rod (315) is fixedly connected with a support (316), the inner wall of the support (316) is rotatably connected with a rotating disc (317), the circumferential surface of the rotating disc (317) is fixedly connected with a short rod (318), the top of the short rod (318) is fixedly connected with a triangular block (319), the circumferential surface of the rotating disc (317) is fixedly connected with a supporting plate (320), the side of the threaded sleeve (35) is fixedly connected with a vertical rod (313), the side of the vertical rod (313) is fixedly connected with a pressing block (314).

2. A bag gripping device for a packaging machine according to claim 1, characterized in that The side of the motor (32) is provided with a switch (33), the connecting rod (37) and the clamping plate (310) are provided with two and are mutually symmetrical along the vertical central axis of the bidirectional screw rod (34), and the side of the clamping plate (310) is fixedly connected with a handle (311).

3. A bag gripping device for a packaging machine according to claim 2, characterised in that The side of the supporting plate (2) is fixedly connected with a placing rack (312), the side of the connecting rod (37) is fixedly connected with a spring one (39), and one end of the spring one (39) away from the connecting rod (37) is fixedly connected to the side of the clamping plate (310).

4. A bag gripping device for a packaging machine according to claim 3, characterised in that The triangular block (319) is located on the displacement track of the pressing block (314), the supporting plate (320) is located on the side of the supporting plate (2), and the supporting plate (320) is located on the bottom of the clamping plate (310).

5. A bag gripping device for a packaging machine according to claim 4, characterised in that, The side of the support (316) is fixedly connected with a support plate (321), the top of the support plate (321) is fixedly connected with a spring two (322), and one end of the spring two (322) away from the support plate (321) is fixedly connected to the bottom of the supporting plate (320).

6. A bag gripping device for a packaging machine according to claim 5, characterized in that The top of the support plate (2) is provided with an anti-resistance device (4), the anti-resistance device (4) comprises a touch lever (41), one end of the touch lever (41) is fixedly connected to the side of the threaded sleeve (35), the top of the support plate (2) is fixedly connected with a setting box (42), the inner wall of the setting box (42) is fixedly connected with a long strip plate (43), the inner wall of the setting box (42) is slidably connected with a sliding plate (44), the side of the sliding plate (44) is fixedly connected with a thin rod (410), the side of the setting box (42) penetrates an oil outlet pipe (47).

7. A bag gripping device for a packaging machine according to claim 6, characterized in that The end, away from the sliding plate (44), of the thin rod (410) is fixedly connected with a contact plate (411), the end, away from the setting box (42), of the oil outlet pipe (47) is located at the top of the bidirectional screw rod (34).

8. A bag gripping device for a packaging machine according to claim 7, characterized in that The long strip plate (43) is provided with two, and is mutually symmetrical along the vertical central axis of the sliding plate (44), the side of the setting box (42) penetrates a dredging pipe, the end, away from the setting box (42), of the dredging pipe penetrates a circular tank (48).

9. A bag gripping device for a packaging machine according to claim 8, characterised in that, The top of the circular tank (48) penetrates a supplement pipe (412), the contact plate (411) is located on the displacement track of the touch lever (41), the inner wall of the setting box (42) is fixedly connected with a cylindrical rod (45), the end, away from the setting box (42), of the cylindrical rod (45) penetrates the side of the sliding plate (44).

10. A bag gripping device for a packaging machine according to claim 9, characterized in that The inner wall of the setting box (42) is fixedly connected with a spring three (46), the end, away from the setting box (42), of the spring three (46) is fixedly connected to the side of the sliding plate (44).

Images