Bag opening mechanism of bag feeding machine

Abstract

The utility model relates to a bag opening mechanism of a bag feeding machine, and aims to solve the problems that according to an existing bag opening mechanism, packaging bags are opened through back-and-forth stretching and retracting of a pneumatically-controlled telescopic rod, when different packaging bags are opened, the opening radiuses are different, and the bag opening efficiency is high. The technical problems that in the prior art, due to the fact that the opening radius can be adjusted only by changing the stroke of pneumatic control, it is troublesome to change the stroke of a pneumatic device, frequent debugging is needed, and time is consumed are solved, and the bag opening device comprises a support, a hydraulic cylinder is arranged in the support, the movable end of the hydraulic cylinder is connected with a movable block, and a bag opening assembly is arranged on one side of the movable block; according to the utility model, the motor drives the positive and negative screw rod to rotate positively and negatively, so that a group of threaded blocks are far away from or close to each other, a group of suckers below the group of threaded blocks are far away from or close to each other, and the operation of adsorbing and opening a packaging bag is completed; according to the mode, different opening radiuses of packaging bags of different sizes can be rapidly adjusted, and the method is convenient and fast to use.

Description

Technical Field

[0001] The utility model relates to the technical field of bag feeding machines, in particular to a bag supporting mechanism of a bag feeding machine. Background Art

[0002] Bag-feeding packaging machines are widely used in various packaging fields. When using the bag-feeding machine, it needs to go through the steps of bag loading, bag clamping, bag supporting, material unloading, and sealing. When supporting the bag, a special bag supporting mechanism is required to achieve the bag supporting effect.

[0003] The existing bag-opening mechanism usually expands the packaging bag by extending and retracting a pneumatically controlled telescopic rod back and forth. When expanding different packaging bags, the expansion radius is different. Therefore, it is necessary to change the stroke of the pneumatic control to adjust the expansion radius. However, changing the stroke of the pneumatic device is more troublesome, requires frequent debugging, and is more time-consuming. In view of this, we propose a bag-opening mechanism for a bag feeding machine. Utility Model Content

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a bag-opening mechanism for a bag feeding machine to solve the technical problem that the current existing bag-opening mechanism usually expands and contracts the packaging bag back and forth by a pneumatically controlled telescopic rod, and when expanding different packaging bags, the expansion radius is different, so it is necessary to change the stroke of the pneumatic control to achieve the adjustment of the expansion radius. However, changing the stroke of the pneumatic device is more troublesome, requires frequent debugging, and is more time-consuming.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: designing a bag-holding mechanism of a bag feeding machine, comprising a bracket, a hydraulic cylinder is provided inside the bracket, a movable end of the hydraulic cylinder is connected to a movable block, a bag-holding assembly is provided on one side of the movable block, and an auxiliary mechanism is provided on the surface of the bag-holding assembly;

[0006] The bag-supporting assembly includes a limit frame, which is fixed to the surface of the movable block. A forward and reverse screw rod is mounted inside the limit frame, one end of the forward and reverse screw rod is connected to a motor, a positioning frame is provided outside the motor, a group of threaded blocks are symmetrically sleeved on the surface of the forward and reverse screw rods, a group of support tubes are symmetrically provided at the bottom end of a group of threaded blocks, and a suction cup is connected to the end of the support tube away from the threaded block.

[0007] Preferably, the motor is engaged in the interior of the positioning frame, and the positioning frame and the limiting frame are fixedly connected.

[0008] Preferably, the motor forms a threaded transmission structure through forward and reverse screw rods and a threaded block, and the front and rear end surfaces of the threaded block are in contact with the inner wall of the limiting frame.

[0009] Preferably, the auxiliary mechanism includes an air blowing pipe, a group of the air blowing pipes are symmetrically arranged on the surface of a group of support pipes, the rear ends of the group of air blowing pipes are respectively connected to transmission pipe 1 and transmission pipe 2, and the ends of transmission pipe 1 and transmission pipe 2 away from the air blowing pipes are connected to an air pump.

[0010] Preferably, the air blowing pipe is in an inverted L shape, the air blowing pipe is fixedly connected to the support pipe, and one end of the air blowing pipe close to the support pipe is sealed.

[0011] Preferably, a group of the blowing pipes are respectively connected to the transmission pipe 1 and the transmission pipe 2, and the transmission pipe 1 and the transmission pipe 2 both include a telescopic folding portion.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model uses a motor to effectively drive the forward and reverse screw rods to rotate forward and reverse, thereby realizing the mutual separation or approach between a group of threaded blocks, and then realizing the mutual separation or approach between a group of suction cups below a group of threaded blocks, thereby completing the suction and bag-holding operation of the packaging bag. This method can quickly adjust the opening radius of packaging bags of different sizes, which is relatively convenient.

[0014] 2. In the present invention, when the opening of the packaging bag is opened, the air is effectively compressed by the air pump, and the compressed air is transmitted to the inside of the blowing pipe through the transmission tube 1 and the transmission tube 2, and air is blown into the packaging bag with the bag opening opened by the blowing pipe, thereby improving the bag-opening effect. Since the transmission tube 1 and the transmission tube 2 both include a telescopic folding portion, when the blowing pipe is adjusted along with the position of the support tube, the transmission tube 1 and the transmission tube 2 can adapt to the position of the blowing pipe and adjust the length accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the utility model;

[0018] In the figure: 1. Bracket; 2. Hydraulic cylinder; 3. Movable block; 4. Bag support assembly; 5. Auxiliary mechanism;

[0019] 401, limit frame; 402, forward and reverse screw rods; 403, motor; 404, positioning frame; 405, thread block; 406, support tube; 407, suction cup;

[0020] 501, air blowing tube; 502, transmission tube 1; 503, transmission tube 2; 504, air pump. DETAILED DESCRIPTION

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0022] A bag-supporting mechanism for a bag-feeding machine, see Figures 1 to 3 , including a bracket 1, a hydraulic cylinder 2 is provided inside the bracket 1, a movable end of the hydraulic cylinder 2 is connected to a movable block 3, a bag support component 4 is provided on one side of the movable block 3, and an auxiliary mechanism 5 is provided on the surface of the bag support component 4;

[0023] The bag-supporting assembly 4 includes a limit frame 401, which is fixed to the surface of the movable block 3. A forward and reverse screw rod 402 is arranged inside the limit frame 401, and one end of the forward and reverse screw rod 402 is connected to a motor 403. A positioning frame 404 is provided outside the motor 403, wherein the motor 403 is engaged in the positioning frame 404, and the positioning frame 404 and the limit frame 401 are fixedly connected. A group of threaded blocks 405 are symmetrically sleeved on the surface of the forward and reverse screw rod 402. Furthermore, the motor 403 forms a threaded transmission structure with the threaded blocks 405 through the forward and reverse screw rod 402. The front and rear end faces of the threaded blocks 405 are in contact with the inner wall of the limit frame 401. A group of support tubes 406 are symmetrically provided at the bottom end of a group of threaded blocks 405, and a suction cup 407 is connected to the end of the support tube 406 away from the threaded block 405. The utility model uses the motor 403 to effectively drive the forward and reverse screw rods 402 to rotate forward and reverse, thereby realizing the mutual separation or approach between a group of threaded blocks 405, and then realizing the mutual separation or approach between a group of suction cups 407 below a group of threaded blocks 405, thereby completing the suction and bag-holding operation of the packaging bag. This method can quickly adjust the opening radius of packaging bags of different sizes, which is relatively convenient.

[0024] It is worth noting that the auxiliary mechanism 5 includes an air blowing pipe 501, and a group of air blowing pipes 501 are symmetrically arranged on the surface of a group of support pipes 406, wherein the air blowing pipe 501 is in an inverted L shape, and the air blowing pipe 501 is fixedly connected to the support pipe 406. The end of the air blowing pipe 501 close to the support pipe 406 is sealed, and the rear end of the group of air blowing pipes 501 is respectively connected to the transmission pipe 1 502 and the transmission pipe 2 503. Furthermore, a group of air blowing pipes 501 is respectively connected to the transmission pipe 1 502 and the transmission pipe 2 503, and the transmission pipe 1 502 and the transmission pipe 2 503 both include a telescopic folding portion, and the end of the transmission pipe 1 502 and the transmission pipe 2 503 away from the air blowing pipe 501 is connected to the air pump 504. In the present invention, when the bag opening of the packaging bag is opened, the air is effectively compressed by the air pump 504, and the compressed air is transmitted to the inside of the blowing tube 501 through the transmission tube 1 502 and the transmission tube 2 503. The blowing tube 501 then blows air into the packaging bag with the bag opening opened, thereby improving the bag opening effect. Since the transmission tube 1 502 and the transmission tube 2 503 both include a telescopic folding portion, when the blowing tube 501 is adjusted along with the position of the support tube 406, the transmission tube 1 502 and the transmission tube 2 503 can both adapt to the position of the blowing tube 501 and adjust the length accordingly.

[0025] Working principle: Install the bracket 1 on one side of the bag clamping mechanism in the bag feeding machine, and then adjust the height of the movable block 3 through the hydraulic cylinder 2, so that the suction cups 407 below the limit frame 401 are located on both sides of the bag opening, and then the motor 403 drives the forward and reverse screw rods 402 to rotate forward and reverse, so as to achieve the mutual distance or proximity between a group of threaded blocks 405, and then achieve the mutual distance or proximity between a group of suction cups 407 below a group of threaded blocks 405, completing the suction and support operation of the bag. When the bag opening is After the bag is expanded, the air is compressed by the air pump 504, and the compressed air is transmitted to the inside of the blowing tube 501 through the transmission tube 1 502 and the transmission tube 2 503, and the blowing tube 501 blows air into the packaging bag with the bag opening expanded, thereby improving the bag expansion effect. Since the transmission tube 1 502 and the transmission tube 2 503 both include a telescopic folding portion, when the blowing tube 501 is adjusted along with the position of the support tube 406, the transmission tube 1 502 and the transmission tube 2 503 can both adapt to the position of the blowing tube 501 and adjust the length accordingly.

[0026] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A bag-supporting mechanism for a bag-feeding machine, comprising a bracket (1), characterized in that: A hydraulic cylinder (2) is provided inside the bracket (1); a movable end of the hydraulic cylinder (2) is connected to a movable block (3); a bag-supporting assembly (4) is provided on one side of the movable block (3); and an auxiliary mechanism (5) is provided on the surface of the bag-supporting assembly (4); The bag support assembly (4) comprises a limiting frame (401), the limiting frame (401) is fixed to the surface of the movable block (3), a forward and reverse screw rod (402) is arranged inside the limiting frame (401), one end of the forward and reverse screw rod (402) is connected to a motor (403), a positioning frame (404) is arranged outside the motor (403), a group of threaded blocks (405) are symmetrically sleeved on the surface of the forward and reverse screw rod (402), a group of support tubes (406) are symmetrically arranged at the bottom end of the group of threaded blocks (405), and one end of the support tube (406) away from the threaded block (405) is connected to a suction cup (407).

2. A bag-holding mechanism for a bag feeding machine according to claim 1, characterized in that: The motor (403) is engaged in the interior of the positioning frame (404), and the positioning frame (404) and the limiting frame (401) are fixedly connected.

3. The bag-holding mechanism of a bag feeding machine according to claim 1, characterized in that: The motor (403) forms a threaded transmission structure through the forward and reverse screw rods (402) and the threaded block (405), and the front and rear end surfaces of the threaded block (405) are in contact with the inner wall of the limiting frame (401).

4. The bag-holding mechanism of a bag feeding machine according to claim 1, characterized in that: The auxiliary mechanism (5) includes an air blowing pipe (501), a group of the air blowing pipes (501) are symmetrically arranged on the surface of a group of support pipes (406), the rear ends of the group of the air blowing pipes (501) are respectively connected to a transmission pipe 1 (502) and a transmission pipe 2 (503), and the ends of the transmission pipe 1 (502) and the transmission pipe 2 (503) away from the air blowing pipe (501) are connected to an air pump (504).

5. The bag-holding mechanism of a bag feeding machine according to claim 4, characterized in that: The air blowing pipe (501) is in an inverted L shape, and the air blowing pipe (501) is fixedly connected to the support pipe (406). One end of the air blowing pipe (501) close to the support pipe (406) is sealed.

6. The bag-holding mechanism of a bag feeding machine according to claim 4, characterized in that: A group of the blowing tubes (501) are respectively connected to the transmission tube 1 (502) and the transmission tube 2 (503), and the transmission tube 1 (502) and the transmission tube 2 (503) both include a telescopic folding portion.

Images