Valve bag opening mechanism

By designing a linked control bag opening frame and a rotating transmission rod structure, the problem of bag mouth damage caused by force concentration in the existing valve bag opening mechanism was solved, and force balance and bag mouth integrity were achieved during the bag opening process.

CN224045616UActive Publication Date: 2026-03-27MIANYANG XINRUI PLASTIC PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-15
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

When the existing valve bag opening mechanism uses a mechanical opening mechanism, the pulling force of the double mechanical claws is concentrated on the diagonal line of the bag opening, which can easily cause the bag opening to be crooked or torn, resulting in damage.

Method used

Design a valve bag opening mechanism. By setting up the linkage control of opening frame a and opening frame b, the opening frame a is driven by a cylinder to move laterally, which drives the opening rod b to move longitudinally. Through the cooperation of the rotating transmission rod and the slide rod, the synchronous opening and closing action of the four opening rods is realized to ensure the force balance.

Benefits of technology

It achieves force balance during the bag opening process, avoids bag opening tilting or tearing, and ensures the integrity of the valve bag.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a valve bag opening mechanism which comprises a connecting frame and a bag opening part, the bag opening part is arranged at the top of the connecting frame, the bag opening part is provided with a limiting frame arranged at the top of the connecting frame, a bag opening frame a is transversely arranged in the limiting frame in a sliding mode, and two bag opening rods a are longitudinally arranged on the side face of the bag opening frame a in a sliding mode. A bag opening frame b is transversely arranged in the limiting frame in a sliding mode, two bag opening rods b are longitudinally arranged on the side face of the bag opening frame b in a sliding mode, the bag opening rods a are connected with the bag opening frame b in a sliding mode, and the bag opening rods b are connected with the bag opening frame a in a sliding mode. By arranging the bag opening part, linkage control over the bag opening frame a and the bag opening frame b can be achieved, and when the air cylinder drives the bag opening frame a to move transversely, the bag opening rod b is driven to move longitudinally through sliding connection of the bag opening rod b and the bag opening frame a; and meanwhile, the bag opening frame b transversely moves to drive the bag opening rod a to longitudinally move through the bag opening rod a, so that synchronous opening and closing actions of the four bag opening rods are realized.
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Description

TECHNICAL FIELD

[0001] The utility model relates to valve port bag production technical field, concretely is a valve port bag opening bag mechanism. BACKGROUND

[0002] Valve port bag is a kind of packing bag for packing powdery or granular solid material and flexible article in industry, often cooperates with special filling equipment, and material is fed from valve port on valve port bag, and packing is formed into cuboid shape, and it is convenient to stack, and stacking is neat.But valve port bag needs to be opened before use, and valve port bag opening bag mechanism is a kind of equipment for automatic packaging line, is specially used to open valve port bag, and its core principle is to open valve by mechanical or pneumatic mode, to facilitate subsequent filling operation.

[0003] The existing valve port bag opening bag mechanism usually adopts mechanical opening bag mechanism to open valve port bag, to facilitate filling, and the most common opening bag mode is double mechanical jaw reverse motion opening bag, i.e., two mechanical jaws rise into valve port bag mouth and move along opposite directions, to make valve port bag mouth open, but since there are only two clamping points, the pulling force of mechanical jaw is concentrated on the diagonal line of valve port bag mouth when opening bag, and it is prone to cause bag mouth skew, even tear open, leading to bag mouth damage. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of valve port bag opening bag mechanism, to solve the problem that the existing valve port bag opening bag mechanism in the background art usually adopts mechanical opening bag mechanism to open valve port bag, to facilitate filling, and the most common opening bag mode is double mechanical jaw reverse motion opening bag, i.e., two mechanical jaws rise into valve port bag mouth and move along opposite directions, to make valve port bag mouth open, but since there are only two clamping points, the pulling force of mechanical jaw is concentrated on the diagonal line of valve port bag mouth when opening bag, and it is prone to cause bag mouth skew, even tear open, leading to bag mouth damage.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of valve port bag opening bag mechanism, including connecting frame and opening bag part:

[0006] The opening bag part is arranged at the top of the connecting frame, the opening bag part has a limiting frame arranged at the top of the connecting frame, the inside of the limiting frame is horizontally slidably provided with an opening bag frame a, the side of the opening bag frame a is longitudinally slidably provided with two opening bag rods a, the inside of the limiting frame is horizontally slidably provided with an opening bag frame b, the side of the opening bag frame b is longitudinally slidably provided with two opening bag rods b, the opening bag rod a is slidably connected with the opening bag frame b, the opening bag frame b moves horizontally to drive the opening bag rod a to move longitudinally, the opening bag rod b is slidably connected with the opening bag frame a, and the opening bag frame a moves horizontally to drive the opening bag rod b to move longitudinally.

[0007] By adopting the technical scheme, linkage control of the bag opening frame a and the bag opening frame b can be realized, when the cylinder drives the bag opening frame a to move horizontally, the bag opening rod b is driven to move longitudinally through the sliding connection of the bag opening rod b and the bag opening frame a; meanwhile, the horizontal movement of the bag opening frame b drives the bag opening rod a to move longitudinally through the bag opening rod a, so that synchronous opening and closing actions of the four bag opening rods are realized.

[0008] Preferably, the bag opening part further has a rotary transmission rod rotatably arranged in the limiting frame, two transmission grooves are arranged in the rotary transmission rod, a sliding rod a is arranged on the side surface of the bag opening frame a, the sliding rod a is in sliding connection with one of the transmission grooves, a cylinder is arranged on the top of the connecting frame, and an output end of the cylinder is connected with the bag opening frame a.

[0009] By adopting the technical scheme, the cylinder can drive the bag opening frame a to move horizontally, and the sliding rod a can slide in the transmission groove, so that the rotary transmission rod is driven to rotate, and power transmission is realized.

[0010] Preferably, the bag opening part further has a sliding rod b arranged on the side surface of the bag opening frame b, and the sliding rod b is in sliding connection with the other transmission groove.

[0011] By adopting the technical scheme, the rotary motion of the rotary transmission rod can be utilized to drive the bag opening frame b to move horizontally in the opposite direction of the bag opening frame a through cooperation of the other transmission groove and the sliding rod b, so that bidirectional linkage is realized.

[0012] Preferably, the bag opening part further has sliding grooves a longitudinally arranged on both sides of the bag opening frame a, two bag opening rods a are respectively embedded in the corresponding sliding grooves a and are in longitudinal sliding connection with the bag opening frame a, and the two bag opening rods a are symmetrically arranged on both sides of the bag opening frame a along the axis of the bag opening frame a.

[0013] By adopting the technical scheme, stable sliding of the bag opening rod a on the bag opening frame a can be ensured, and symmetrical motion of the two bag opening rods a is maintained.

[0014] Preferably, the bag opening part further has sliding grooves b longitudinally arranged on both sides of the bag opening frame b, two bag opening rods b are respectively embedded in the corresponding sliding grooves b and are in longitudinal sliding connection with the bag opening rod a, and the two bag opening rods b are symmetrically arranged on both sides of the bag opening rod a along the axis of the bag opening rod a.

[0015] By adopting the technical scheme, stable sliding of the bag opening rod b on the bag opening frame b can be ensured, and symmetrical motion of the two bag opening rods b is maintained.

[0016] Preferably, the bag opening part further has guide grooves a arranged on both sides of the bag opening frame a, and the top portions of the two bag opening rods b are respectively embedded in the corresponding guide grooves a and are in sliding connection with the bag opening frame a.

[0017] By adopting the technical scheme, the transverse movement of the bag opening frame a can be converted into the longitudinal movement of the bag opening rod b through the specific shape of the guide groove a, and the bag opening action can be realized.

[0018] Preferably, the bag opening part further has guide grooves b arranged on both sides of the bag opening rod a, and the top portions of the two bag opening rods a are respectively embedded into the corresponding guide grooves b and are in sliding connection with the bag opening frame b.

[0019] By adopting the technical scheme, the transverse movement of the bag opening frame b can be converted into the longitudinal movement of the bag opening rod a through the specific shape of the guide groove b, and the bag opening action can be realized.

[0020] Preferably, the bottom ends of the bag opening rod a and the bag opening rod b are provided with inclined surfaces.

[0021] By adopting the technical scheme, the inclined surface structure can be used to more smoothly insert into the opening part of the valve bag, and the bag opening resistance can be reduced.

[0022] Compared with the prior art, the utility model has the beneficial effects that: through the bag opening part, the linkage control of the bag opening frame a and the bag opening frame b can be realized, when the bag opening frame a is driven to move transversely by the cylinder, the bag opening rod b is driven to move longitudinally through the sliding connection of the bag opening rod b and the bag opening frame a; meanwhile, the bag opening frame b is driven to move longitudinally through the bag opening rod a, thereby realizing the synchronous opening and closing action of the four bag opening rods and ensuring the force balance of the bag opening. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure schematic view of the present application;

[0024] Figure 2 It is the overall structure schematic view of the present application;

[0025] Figure 3 It is the limit frame structure schematic view of the present application;

[0026] Figure 4 It is the bag opening frame a structure schematic view of the present application;

[0027] Figure 5 It is the bag opening frame b structure schematic view of the present application.

[0028] In the drawing: 1, connecting frame; 2, bag opening part; 201, cylinder; 202, limit frame; 203, rotary transmission rod; 204, transmission groove; 205, bag opening frame a; 206, sliding groove a; 207, guide groove a; 208, sliding rod a; 209, bag opening rod a; 210, bag opening frame b; 211, sliding groove b; 212, guide groove b; 213, sliding rod b; 214, bag opening rod b. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] Embodiment one

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 , the embodiment provides a technical solution: a valve bag opening mechanism, comprising a connecting frame 1 and an opening part 2:

[0032] The opening part 2 is arranged at the top of the connecting frame 1, and the opening part 2 has a limiting frame 202 arranged at the top of the connecting frame 1. The limiting frame 202 is internally arranged with an opening frame a 205 which slides horizontally. The side of the opening frame a 205 is longitudinally arranged with two opening rods a 209. The limiting frame 202 is internally arranged with an opening frame b 210 which slides horizontally. The side of the opening frame b 210 is longitudinally arranged with two opening rods b 214. The opening rod a 209 is slidably connected with the opening frame b 210. The opening frame b 210 moves horizontally to drive the opening rod a 209 to move longitudinally. The opening rod b 214 is slidably connected with the opening frame a 205. The opening frame a 205 moves horizontally to drive the opening rod b 214 to move longitudinally. The linkage control of the opening frame a 205 and the opening frame b 210 can be realized. When the cylinder 201 drives the opening frame a 205 to move horizontally, the opening rod b 214 is driven to move longitudinally through the sliding connection of the opening rod b 214 and the opening frame a 205. At the same time, the opening frame b 210 moves horizontally to drive the opening rod a 209 to move longitudinally through the opening rod a 209, so as to realize the synchronous opening and closing action of the four opening rods.

[0033] Embodiment two

[0034] Please refer to Figure 3 , Figure 4 and Figure 5 , the embodiment provides a technical solution: a valve bag opening mechanism, comprising an opening part 2, an opening frame a 205 and an opening frame b 210:

[0035] Rotary transmission rod 203 is arranged inside the limiting frame 202, the inside of the rotary transmission rod 203 is provided with two transmission grooves 204, the side of the bag opening frame a 205 is provided with a sliding rod a 208, the sliding rod a 208 is slidably connected with one of the transmission grooves 204, the top of the connecting frame 1 is provided with a gas cylinder 201, the output end of the gas cylinder 201 is connected with the bag opening frame a 205, the bag opening frame a 205 can be driven to move horizontally by the gas cylinder 201, at the same time, the sliding rod a 208 is slid in the transmission groove 204, and then the rotary transmission rod 203 generates rotary motion, so that power transmission is realized.

[0036] The bag opening frame b 210 is integrally provided with a sliding rod b 213 on the side, the sliding rod b 213 is slidably connected with the other transmission groove 204, the rotary motion of the rotary transmission rod 203 can drive the bag opening frame b 210 to move horizontally in the opposite direction of the bag opening frame a 205 through cooperation of the other transmission groove 204 and the sliding rod b 213, and bidirectional linkage is realized.

[0037] The bag opening frame a 205 is provided with a sliding groove a 206 on both sides, two bag opening rods a 209 are respectively embedded in the corresponding sliding grooves a 206 and are connected with the bag opening frame a 205 in longitudinal sliding mode, the two bag opening rods a 209 are symmetrically arranged on both sides of the bag opening frame a 205 along the axis of the bag opening frame a 205, so that stable sliding of the bag opening rods a 209 on the bag opening frame a 205 is ensured, and the symmetrical motion of the bag opening rods a 209 on both sides is maintained.

[0038] The bag opening frame b 210 is provided with a sliding groove b 211 on both sides, two bag opening rods b 214 are respectively embedded in the corresponding sliding grooves b 211 and are connected with the bag opening rod a 209 in longitudinal sliding mode, the two bag opening rods b 214 are symmetrically arranged on both sides of the bag opening rod a 209 along the axis of the bag opening rod a 209, so that stable sliding of the bag opening rods b 214 on the bag opening frame b 210 is ensured, and the symmetrical motion of the bag opening rods b 214 on both sides is maintained.

[0039] The bag opening frame a 205 is provided with a guide groove a 207 on both sides, the top of the two bag opening rods b 214 is respectively embedded in the corresponding guide grooves a 207 and is connected with the bag opening frame a 205 in sliding mode, the specific shape of the guide groove a 207 can convert the horizontal movement of the bag opening frame a 205 into the vertical movement of the bag opening rod b 214, so that the bag opening action is realized.

[0040] The bag opening rod a 209 is provided with a guide groove b 212 on both sides, the top of the two bag opening rods a 209 is respectively embedded in the corresponding guide grooves b 212 and is connected with the bag opening frame b 210 in sliding mode, the specific shape of the guide groove b 212 can convert the horizontal movement of the bag opening frame b 210 into the vertical movement of the bag opening rod a 209, so that the bag opening action is realized.

[0041] The bottom end of the bag opening rod a209 and the bag opening rod b214 are provided with inclined surfaces, which can be inserted into the opening part of the valve bag more smoothly, reducing the bag opening resistance.

[0042] Working principle: first, the mechanism is fixed on the production line through the connecting frame 1, the cylinder 201 drives the bag opening frame a205 to move transversely along the limiting frame 202, at this time the sliding rod a208 slides in the transmission groove 204, drives the rotary transmission rod 203 to rotate, then the rotary motion of the rotary transmission rod 203 drives the sliding rod b213 to move through another transmission groove 204, makes the bag opening frame b210 move transversely in the opposite direction. In the process of transverse movement of the bag opening frame a205 and the bag opening frame b210, the bag opening frame a205 drives the bag opening rod b214 to move longitudinally through the guide groove a207, at the same time the bag opening frame b210 drives the bag opening rod a209 to move longitudinally through the guide groove b212, so that the four bag opening rods can be opened synchronously, ensuring the force balance of bag opening.

[0043] In the description of the utility model, it is need to explain, unless another explicit provision and limitation, the term "installation" "is provided with" "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integral connection, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements, for the ordinary skilled person in the art, can understand the specific meaning of the above-mentioned term in the utility model according to specific situation.

[0044] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A valve port bag opening mechanism characterized by, The utility model relates to a bag opening device for a bag opening machine, comprising: a connecting frame; a bag opening part provided on the top of the connecting frame, the bag opening part having a limiting frame provided on the top of the connecting frame, a bag opening frame a slidingly provided inside the limiting frame, two bag opening rods a slidingly provided on the side of the bag opening frame a, a bag opening frame b slidingly provided inside the limiting frame, two bag opening rods b slidingly provided on the side of the bag opening frame b, the bag opening rod a being slidingly connected with the bag opening frame b, the bag opening frame b moving laterally to drive the bag opening rod a to move longitudinally, the bag opening rod b being slidingly connected with the bag opening frame a, the bag opening frame a moving laterally to drive the bag opening rod b to move longitudinally.

2. A valve pocket opening mechanism according to claim 1, wherein: The bag opening part further has a rotating transmission rod rotatingly provided inside the limiting frame, two transmission grooves being formed in the interior of the rotating transmission rod, a sliding rod a being provided on the side of the bag opening frame a, the sliding rod a being slidingly connected with one of the transmission grooves, a cylinder being provided on the top of the connecting frame, the output end of the cylinder being connected with the bag opening frame a.

3. A valve pocket opening mechanism according to claim 2, wherein: The bag opening part further has a sliding rod b provided on the side of the bag opening frame b, the sliding rod b being slidingly connected with the other transmission groove.

4. A valve pocket opening mechanism according to claim 1, wherein: The bag opening part further has a sliding groove a longitudinally formed on both sides of the bag opening frame a, two bag opening rods a respectively embedded in the corresponding sliding grooves a and slidingly connected with the bag opening frame a, the two bag opening rods a being symmetrically arranged on both sides of the bag opening frame a along the axis of the bag opening frame a.

5. A valve pocket opening mechanism according to claim 1, wherein: The bag opening part further has a sliding groove b longitudinally formed on both sides of the bag opening frame b, two bag opening rods b respectively embedded in the corresponding sliding grooves b and slidingly connected with the bag opening rod a, the two bag opening rods b being symmetrically arranged on both sides of the bag opening rod a along the axis of the bag opening rod a.

6. A valve pocket opening mechanism according to claim 1, wherein: The bag opening part further has a guide groove a formed on both sides of the bag opening frame a, the top of each of the two bag opening rods b respectively embedded in the corresponding guide groove a and slidingly connected with the bag opening frame a.

7. A valve pocket opening mechanism according to claim 1, wherein: The bag opening part further has a guide groove b formed on both sides of the bag opening rod a, the top of each of the two bag opening rods a respectively embedded in the corresponding guide groove b and slidingly connected with the bag opening frame b.

8. A valve pocket opening mechanism according to claim 1, wherein: The bottom end of each of the bag opening rod a and the bag opening rod b is provided with an inclined surface.