Servo zipper opening device of bag feeding type packaging machine

Abstract

The utility model provides a servo zipper opening device of a bag feeding type packaging machine, which relates to the technical field of packaging machinery, and comprises a main support frame, two connecting shafts are fixedly arranged in the main support frame and are symmetrically arranged, the outer surface of each connecting shaft is rotatably connected with an inner arm, the bottom end of each inner arm extends to the lower part of the main support frame, and the inner arm is fixedly connected with the main support frame. A servo motor is fixedly installed in the middle of the top end of the main supporting frame, the output end of the servo motor extends into the main supporting frame, and a connecting clamping block is fixed to the output shaft end of the servo motor. According to the servo zipper opening device of the bag feeding type packaging machine, the symmetrical inner arms are arranged and can be unfolded, the clamping jaws are hinged to the sides of the inner arms, the clamping jaws are controlled to rotate through the air cylinders, the inner walls are controlled to rotate through the servo motors, the two sides of a packaging bag can be fixed and unfolded, and therefore the effect of opening a zipper can be achieved; the whole device is simple in arrangement, and the problem that in the prior art, a bag opening device is complex in structure and low in bag opening efficiency is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machinery, in particular to a servo zipper opening device for a bag - feeding packaging machine. Background Technique

[0002] For packaging products such as snacks and daily chemicals on the market now, the whole bag opening cannot be used up at one time. In order to seal the bag mouth again, a zipper seal is added to the bag mouth. Manually, the zipper can be squeezed to close the zipper, thereby realizing the sealing of the bag mouth. Such packaging bags are called zipper bags.

[0003] The existing zipper opening devices on the market are large in volume, complicated in structure, and low in use efficiency. Most of them are pneumatically controlled and are greatly affected by air pressure. If the supplied compressed air fluctuates slightly, it will affect the stability of zipper opening, thereby reducing the bag - opening efficiency and the output of the equipment. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a servo zipper opening device for a bag - feeding packaging machine, which solves the problems put forward in the background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A servo zipper opening device for a bag - feeding packaging machine includes a main support frame. Two connecting shafts are fixedly installed inside the main support frame. The two connecting shafts are symmetrically arranged. The outer surface of the connecting shaft is rotationally connected with an inner arm. The bottom end of the inner arm extends below the main support frame. A servo motor is fixedly installed in the middle of the top end of the main support frame. The output end of the servo motor extends into the main support frame. A connecting clamp block is fixed at the output shaft end of the servo motor. Inner - threaded spherical bearings are installed on both sides of the connecting clamp block through bolts. An outer - threaded spherical bearing is screwed into the threaded hole of the inner - threaded spherical bearing. The outer - threaded spherical bearing and the inner - threaded spherical bearing form a set of connecting rods that can rotate at both ends. The outer - threaded spherical bearing is fixed to the top end of the inner arm through bolts. An articulated sleeve protrudes from the lower part of the outer side of the inner arm. A clamping jaw is articulated inside the articulated sleeve. A connecting platform is arranged in the middle of the outer side of the inner arm. The clamping jaw and the connecting platform are fixedly connected by a cylinder.

[0006] Preferably, the bottom end of the inner arm is in a pointed - mouth shape, with the mutually - approaching surfaces parallel and the outer surface inclined.

[0007] Preferably, a clamping block is arranged on the inner side of the clamping jaw, and the material of the clamping block is rubber.

[0008] Preferably, the cross - sectional shape of the clamping jaw is "L" - shaped. The clamping jaw is articulated with the articulated sleeve through a first pin shaft, the clamping jaw is articulated with the cylinder through a second pin shaft, and the tail end of the cylinder is articulated with the connecting platform through a third pin shaft.

[0009] Preferably, threaded holes are provided at both ends of the connecting shaft, and both sides of the connecting shaft are bolted to the main support frame from the outside.

[0010] Preferably, the main support frame is in the shape of a frame with an open lower side in the shape of a convex platform, and the front side plate of the main support frame is detachable.

[0011] The utility model has the following beneficial effects:

[0012] 1. For the servo zipper opening device of the bag - type packaging machine, by setting symmetric inner arms that can be unfolded, and hinging claws on the sides of the inner arms, controlling the rotation of the claws through a cylinder, and controlling the movement of the inner arms through a servo motor, the two sides of the packaging bag can be fixed and unfolded, so as to achieve the effect of opening the zipper. The whole device is simply arranged, solving the problems that the servo motor moves constantly, and the bag - opening device in the prior art has a complex structure and low bag - opening efficiency.

[0013] 2. For the servo zipper opening device of the bag - type packaging machine, clamping blocks are arranged on the inner sides of the claws. The material of the clamping blocks is rubber, which is used to increase the friction force, increase the clamping force, and prevent the packaging bag mouth from being torn or slipping off when the zipper of the packaging bag is opened due to the clamping force being less than the zipper opening force. Description of the Drawings

[0014] Figure 1 is the three - dimensional external view of the servo zipper opening device of the bag - type packaging machine of the present utility model;

[0015] Figure 2 is the exploded view of the internal structure of the servo zipper opening device of the bag - type packaging machine of the present utility model;

[0016] Figure 3 is the schematic connection diagram of the servo motor controlling the movement of the inner arm of the servo zipper opening device of the bag - type packaging machine of the present utility model;

[0017] Figure 4 is the schematic diagram of the initial position structure of the inner arm and claws of the servo zipper opening device of the bag - type packaging machine of the present utility model;

[0018] Figure 5 is the schematic diagram of the position structure of the inner arm and claws of the servo zipper opening device of the bag - type packaging machine of the present utility model after clamping the bag;

[0019] Figure 6 is the schematic diagram of the position structure of the inner arm and claws of the servo zipper opening device of the bag - type packaging machine of the present utility model at the position of opening the zipper after clamping the bag;

[0020] Figure 7 is the schematic diagram of the position structure of the inner arm and claws of the servo zipper opening device of the bag - type packaging machine of the present utility model at the position after opening the zipper.

[0021] Among them, servo motor - 1, main support frame - 3, gripper - 4, clamping block - 5, pin shaft 1 - 6, pin shaft 2 - 7, cylinder - 8, pin shaft 3 - 9, inner arm - 10, connecting shaft - 11, connecting clamping block - 12, external thread spherical plain bearing - 13, internal thread spherical plain bearing - 14, hinge sleeve - 15, connecting platform - 16. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figure 1-7 shown, the embodiment of the present invention provides a servo open zipper device for a bag - type packaging machine, including a main support frame 3. Two connecting shafts 11 are fixedly installed inside the main support frame 3. The two connecting shafts 11 are symmetrically arranged. Threaded holes are provided at both ends of the connecting shaft 11, and both sides of the connecting shaft 11 are connected to the main support frame 3 through bolts from the outside.

[0024] The outer surface of the connecting shaft 11 is rotatably connected to an inner arm 10. The bottom end of the inner arm 10 is in a pointed - mouth shape, with the mutually - approaching surfaces parallel and the outer side surfaces inclined. Through such a setting, it is convenient for the inner arm to be inserted into the interior of the packaging bag.

[0025] The bottom end of the inner arm 10 extends below the main support frame 3. The main support frame 3 is in the shape of a frustum - shaped frame with an open bottom side. The front side plate of the main support frame 3 is detachable. Through the detachable front side plate, it is convenient to repair the internal devices. A servo motor 1 is fixedly installed in the middle of the top end of the main support frame 3. The servo motor 1 is fixedly connected to the main support frame 3 through bolts. The output end of the servo motor 1 extends into the interior of the main support frame 3. A connecting clamping block 12 is fixed to the output shaft end of the servo motor 1. Two internal thread spherical plain bearings 14 are installed on both sides of the connecting clamping block 12 through bolts. An external thread spherical plain bearing 13 is screwed into the threaded hole of the internal thread spherical plain bearing 14. The external thread spherical plain bearing 13 is fixed in the threaded hole at the top end of the inner arm 10 through bolts. Thus, the positive and reverse rotation of the output shaft of the servo motor 1 drives the inner arm 10 to move inwards and outwards. Through the two - end rotatable connecting rod composed of the connecting clamping block 12, the external thread spherical plain bearing 13 and the internal thread spherical plain bearing 14, the rotation of the output shaft of the servo motor 1 is converted into the inward and outward movement of the inner arm 10.

[0026] The servo motor 1 installed at the top of the main support frame 3 serves as the driving unit. The origin is set by the driving parameters when the inner sides of the left and right inner arms 10 are brought together. By setting the rotation angle of the output shaft of the servo motor 1, the opening distance of the inner arms is controlled. Through the setting of the servo drive parameters, if the inner arms 10 cannot stop when returning to the origin or cannot stop when opening, the servo driver will send a signal in time, and the servo motor will stop working, acting as a protection device to prevent damage.

[0027] A connecting clamp block 12 is fixedly installed at the output end of the servo motor 1. A link that can rotate at both ends and is composed of internal and external thread joint bearings 14 / 13 is used to connect the connecting clamp block 5 and the inner arm 10, converting the rotational movement of the motor shaft into the opening and closing movement of the inner arm.

[0028] An articulated sleeve 15 protrudes from the lower part of the outer side of the inner arm 10. A clamping jaw 4 is articulated inside the articulated sleeve 15, enabling the two clamping jaws to respectively grip one side edge of the packaging bag. A clamping block 5 is arranged on the inner side of the clamping jaw 4. The clamping block 5 is made of rubber material to increase the friction force and the clamping force, preventing the packaging bag opening from being torn or slipping when the clamping force is less than the opening force of the zipper when opening the packaging bag zipper. After the side edge of the packaging bag enters between the inner arm and the clamping jaw, the clamping jaw closes and firmly grips the packaging bag through the clamping force between the inner arm and the clamping jaw. A connecting platform 16 is arranged in the middle of the outer side of the inner arm 10. The clamping jaw 4 and the connecting platform 16 are fixedly connected by a cylinder 8, and the cylinder 8 is used to control the opening and closing of the clamping jaw 4.

[0029] The cross-sectional shape of the clamping jaw 4 is "L". The clamping jaw 4 is articulated with the articulated sleeve 15 through a first pin 6, the clamping jaw 4 is articulated with the cylinder 8 through a second pin 7, and the tail end of the cylinder 8 is articulated with the connecting platform 16 through a third pin 9. A bushing is sleeved on the outer surface of the pin.

[0030] During use, the device is inserted into the top of the packaging bag. After the inner arm 10 is inserted, the two clamping jaws 4 are closed by the operation of the cylinder 8. At this time, the two side edges of the packaging bag are firmly gripped through the clamping force between the inner arm and the clamping jaw. After being firmly gripped, the servo motor controls the two inner arms to move outward, thus realizing the opening of the packaging bag zipper.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A servo zipper-opening device for a bag-feeding packaging machine, comprising a main support frame (3), characterized in that: Two connecting shafts (11) are fixedly installed inside the main support frame (3). The two connecting shafts (11) are symmetrically arranged. The outer surface of the connecting shaft (11) is rotatably connected with an inner arm (10). The bottom end of the inner arm (10) extends below the main support frame (3). A servo motor (1) is fixedly installed in the middle of the top end of the main support frame (3). The output end of the servo motor (1) extends inside the main support frame (3). A connecting clamp block (12) is fixed to the output shaft end of the servo motor (1). Inner wire joint bearings (14) are installed on both sides of the connecting clamp block (12) through bolts. An outer wire joint bearing (13) is screwed into the threaded hole of the inner wire joint bearing (14). The outer wire joint bearing (13) and the inner wire joint bearing (14) form a set of connecting rods that can rotate at both ends. The outer wire joint bearing (13) is fixed to the top end of the inner arm (10) through bolts. An articulated sleeve (15) protrudes from the lower part of the outer side of the inner arm (10). A clamping jaw (4) is articulated inside the articulated sleeve (15). A connecting platform (16) is arranged in the middle of the outer side of the inner arm (10). The clamping jaw (4) and the connecting platform (16) are fixedly connected through a cylinder (8).

2. The servo zipper opening device of a bag-feeding packaging machine according to claim 1, characterized in that: The bottom end of the inner arm (10) is in a pointed shape, with the mutually approaching sides parallel and the outer side inclined.

3. The servo zipper opening device of a bag-feeding packaging machine according to claim 1, wherein: Clamping blocks (5) are arranged on the inner side of the clamping jaw (4). The clamping blocks (5) are made of rubber material.

4. The servo zipper opening device of a bag-feeding packaging machine according to claim 1, wherein: The cross-sectional shape of the clamping jaw (4) is "L" shaped. The clamping jaw (4) is articulated with the articulated sleeve (15) through a pin shaft one (6). The clamping jaw (4) is articulated with the cylinder (8) through a pin shaft two (7). The tail end of the cylinder (8) is articulated with the connecting platform (16) through a pin shaft three (9).

5. The servo zipper opening device of a bag-feeding packaging machine according to claim 1, wherein: Threaded holes are opened at both ends of the connecting shaft (11). Both sides of the connecting shaft (11) are connected to the main support frame (3) through bolts from the outside.

6. The servo zipper opening device of a bag-feeding packaging machine according to claim 1, characterized in that: The main support frame (3) is in the shape of a frustum-shaped frame with an open lower side. The front side plate of the main support frame (3) is detachable.

Images