Bag opening mechanism for packaging machine

Abstract

The utility model provides a bag opening mechanism for a packaging machine, which comprises a bearing plate arranged above a packaging bag in a lifting manner, a bag opening component arranged on the bearing plate in a swinging manner, a driving component for driving the bag opening component, and a motor connected with the driving component, a separating assembly is arranged below the bag opening assembly and comprises a supporting base and vacuum suction cups which are separably sucked to the two sides of the packaging bag. According to the bag opening mechanism for the packaging machine, the vertical sliding position of the bearing plate on the second sliding rail is adjusted, so that the bag opening clamp can descend to the bottom of a packaging bag, the height adjusting range of the bag opening assembly is large, the driving assembly is driven by the motor to expand and open the bag opening clamp of the bag opening assembly, and the bag opening efficiency is improved. And the bag opening adjusting range of the bag opening clamp is large, so that the bag opening operation range of the bag opening mechanism on packaging bags of different specifications is large, and the applicability of the bag opening mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing machine technical field, concretely relates to a bag opening mechanism for packing machine. BACKGROUND

[0002] The packing machine is a kind of automation equipment widely used in various fields, and the main function is to package products to facilitate transportation, sales and use. It not only can improve production efficiency, but also can guarantee product quality, reduce labor cost, and the packing machine is widely used in food, medicine, daily necessities, chemical industry and multiple industries. For example, in the food industry, automatic food packaging machine is mainly used for the packaging of small food, candy, tea and other products, and the types of packing machine are various, including vacuum packaging machine, heat shrinkage packaging machine, three-dimensional packaging machine etc. Each type of packaging machine has its specific application field and advantage. The specific operation process of vacuum packaging machine is that the two side edges of packaging bag are separated first, then the opening of packaging bag is enlarged by bag opening mechanism, and then material is filled into packaging bag and vacuumized for packaging.

[0003] However, the existing bag opening mechanism for packing machine needs to replace different bag opening clamps according to the height of packaging bag, and the adaptability of bag opening mechanism is not strong, and the present scheme solves this technical problem. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiency of prior art, the utility model provides a bag opening mechanism for packing machine, the height adjustment range of bag opening assembly is larger by the vertical sliding position adjustment of bearing plate on slide rail two, the bag opening clamp can be lowered to the bottom of packaging bag, the bag opening clamp of bag opening assembly is expanded and opened by motor driving driving assembly, the bag opening adjustment range of bag opening clamp is larger, so that the bag opening operation range of bag opening mechanism for different specifications of packaging bag is larger, and the applicability of bag opening mechanism is improved.

[0005] To achieve the above object, the utility model takes the technical scheme as follows: a bag opening mechanism for packing machine, including the bearing plate that can be lifted and placed in the position above packaging bag, still include the bag opening assembly that swings and is set on the bearing plate, the driving assembly for driving the bag opening assembly, motor is connected with the driving assembly;

[0006] The lower position of the bag opening assembly is provided with a separation assembly, the separation assembly comprises a supporting seat, and the vacuum suction cups are separable and suctioned to the two sides of the packaging bag, the bag opening assembly comprises two connecting rods which are rotationally arranged on the bearing plate respectively, bag opening clamps which are fixedly arranged on the side of the connecting rods, a driving arm one which is fixed at one end of the connecting rod, a driving arm two which is fixed at the other end of the connecting rod, one end of the two bag opening clamps is respectively expanded and arranged on the inner side of the packaging bag, the other end of the driving arm one is connected with the driving assembly, and the other end of the driving arm two is separable and abuts against the supporting seat.

[0007] The driving assembly comprises a sliding rail one which is transversely arranged on the bearing plate, a vertical plate one and a vertical plate two which are oppositely and slidably arranged on the sliding rail one, a rack one which is connected with the vertical plate one, a rack two which is connected with the vertical plate two, and a straight gear which is meshed with the rack one and the rack two on the two sides respectively, the vertical plate one and the vertical plate two are respectively abutted against the other end of the two driving arms one, and the straight gear is connected with the motor.

[0008] The side of the vertical plate one and the vertical plate two is provided with a rolling wheel one, and the side of the rolling wheel one is abutted against the other end of the driving arm one.

[0009] The other end of the bag opening clamp is provided with a supporting table one, the bearing plate is provided with a supporting table two, and a return spring is arranged between the supporting table one and the supporting table two.

[0010] The supporting seat is provided with two rolling wheels two, and the other end of the two driving arms two is separable and abutted against the side of the rolling wheel two.

[0011] The straight gear is coaxially connected with a bevel gear one, the output shaft of the motor is connected with a bevel gear two, and the bevel gear one is meshed with the bevel gear two.

[0012] The bearing plate is provided with a chute, and the discharging opening of the chute is arranged towards between the two bag opening clamps.

[0013] The bearing plate is provided with a spiral cable, and the cable is electrically connected with the motor.

[0014] The bearing plate is provided with a driving rack, the bearing plate is slidably connected with a sliding rail two, and the bearing plate is vertically and slidably arranged on the sliding rail two through the driving rack.

[0015] Compared with the prior art, the bag opening assembly has the advantages that:

[0016] (1) through the vertical sliding position adjustment of the bearing plate on the slide rail two, the bag opening clamp can be lowered to the bottom of the packaging bag, the height adjustment range of the bag opening assembly is larger, the bag opening clamp of the bag opening assembly is expanded and opened by the motor driving assembly, the bag opening adjustment range of the bag opening clamp is larger, so that the bag opening operation range of the bag opening mechanism for different specifications of packaging bags is larger, and the applicability of the bag opening mechanism is improved;

[0017] (2) when the bearing plate with the bag opening assembly is lowered, the other end of the driving arm two slowly approaches the support seat and is in contact with the roller two on the support seat, the two driving arms two are swung by the roller two, and then the connecting rod is rotated by the driving arm two, the bag opening operation is completed by the expansion of the bag opening clamp driven by the connecting rod, the bag opening failure and bag opening error when the motor driving is abnormal are avoided by the arrangement of the driving arm two, the reliability of the bag opening clamp operation is ensured, and the applicability of the bag opening mechanism is further improved;

[0018] (3) through the arrangement of the bevel gear one and the bevel gear two, the motor is vertically arranged, the occupation of the horizontal space of the bag opening mechanism is reduced, the bag opening mechanism occupies smaller space, and the layout is more reasonable;

[0019] (4) the abrasion of the driving arm one is reduced by the arrangement of the roller one, and the abrasion of the driving arm two is reduced by the arrangement of the roller two, so that the operation of the bag opening mechanism is more stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the embodiment one of the utility model;

[0021] Figure 2 is the driving assembly structure schematic diagram of the embodiment one of the utility model;

[0022] Figure 3 is the driving assembly structure exploded view schematic diagram of the embodiment one of the utility model;

[0023] Figure 4 is the structure schematic diagram of the bag opening assembly of the utility model;

[0024] Figure 5 is the structure schematic diagram of the return spring of the utility model;

[0025] Figure 6 is the structure schematic diagram of the embodiment two of the utility model.

[0026] Wherein, the figure: 1, bearing plate; 11, support table two; 12, return spring; 13, drive rack; 2, bag opening assembly; 21, connecting rod; 22, bag opening clamp; 221, support table one; 23, drive arm one; 24, drive arm two; 3, drive assembly; 31, slide rail one; 32, vertical plate one; 321, rack one; 33, vertical plate two; 331, rack two; 34, straight gear; 35, roller one; 36, bevel gear one; 37, bevel gear two; 4, motor; 5, separation assembly; 51, support seat; 52, vacuum chuck; 53, roller two; 6, chute; 7, cable; 8, slide rail two; 9, packaging bag. DETAILED DESCRIPTION

[0027] In order to make the technical features of the scheme clearer, the scheme will be described below through specific embodiments.

[0028] Example one: see Figures 1-5 A bag opening mechanism for packaging machine, comprising a bearing plate 1 arranged in a position above the packaging bag 9 in a liftable manner, further comprising a bag opening assembly 2 swingingly arranged on the bearing plate 1, a drive assembly 3 for driving the bag opening assembly 2, and a motor 4 connected with the drive assembly 3.

[0029] A separation assembly 5 is arranged below the bag opening assembly 2, the separation assembly 5 comprising a support seat 51 and vacuum chucks 52 separably attracted to both sides of the packaging bag 9, and the bag opening assembly 2 comprising two connecting rods 21 respectively rotationally arranged on the bearing plate 1, bag opening clamps 22 fixedly arranged on the side of the connecting rods 21, a drive arm one 23 fixed at one end of the connecting rod 21, and a drive arm two 24 fixedly connected at one end with the other end of the connecting rod 21, one end of the two bag opening clamps 22 respectively expandingly arranged on the inner side of the packaging bag 9, the other end of the drive arm one 23 connected with the drive assembly 3, and the other end of the drive arm two 24 separably abutting with the support seat 51.

[0030] The drive assembly 3 comprises a slide rail one 31 transversely arranged on the bearing plate 1, a vertical plate one 32 and a vertical plate two 33 oppositely arranged on the slide rail one 31, a rack one 321 connected with the vertical plate one 32, a rack two 331 connected with the vertical plate two 33, and a straight gear 34 meshing with the rack one 321 and the rack two 331 on both sides, the vertical plate one 32 and the vertical plate two 33 respectively abutting with the other end of the two drive arm one 23, and the straight gear 34 connected with the motor 4.

[0031] The side of the vertical plate one 32 and the vertical plate two 33 is respectively provided with a roller one 35, and the side of the roller one 35 abuts with the other end of the drive arm one 23.

[0032] The other end of the bag opening clamp 22 is provided with a support table one 221, the bearing plate 1 is provided with a support table two 11, and the support table one 221 and the support table two 11 are provided with a return spring 12 therebetween.

[0033] The support base 51 is provided with two rollers II 53, and the other ends of the two driving arms II 24 are respectively detachably abut against the side portions of the rollers II 53.

[0034] The carrying plate 1 is provided with a trough 6, and the discharging opening of the trough 6 faces the two bag opening clamps 22.

[0035] The carrying plate 1 is provided with a spiral cable 7, and the spiral cable 7 is electrically connected with the motor 4; when the bag opening assembly moves up and down, the spiral cable 7 makes the circuit not easy to be disconnected and not easy to be in poor contact, and the connection of the cable 7 is safer and more reliable.

[0036] The carrying plate 1 is provided with a driving rack 13, the carrying plate 1 is slidably connected with a slide rail II 8, and the carrying plate 1 is vertically slidably arranged on the slide rail II 8 through the driving rack 13.

[0037] The specific working process of the utility model is as follows:

[0038] Firstly, the vacuum suction cup 52 of the separating assembly 5 separates a gap on the two sides of the packaging bag 9 and simultaneously sucks the two sides of the packaging bag 9, and then the bag opening assembly 2 is used to open the packaging bag 9; the specific operation process of the bag opening assembly 2 is as follows: the carrying plate 1 is lowered to a set height, so that the two bag opening clamps 22 are inserted into the packaging bag 9; at this time, the motor 4 is started, the motor 4 drives the rack I 321 and the rack II 331 to move through the spur gears 34 respectively, so as to drive the vertical plate I 32 and the vertical plate II 33 to approach and close, the two rollers I 35 press the driving arm I 23 to drive the connecting rod 21 to rotate, the connecting rod 21 drives the two bag opening clamps 22 to expand, and the bag opening clamps 22 gradually open the packaging bag 9; when the carrying plate 1 is lowered to the bottom of the packaging bag 9, the two bag opening clamps 22 are expanded to completely open the packaging bag 9; then the material in the trough 6 is loaded, the material falls into the packaging bag 9 through the two bag opening clamps 22, then the motor 4 is reversely operated, the bag opening clamps 22 are smoothly closed under the elastic force of the return springs 12, then the support plate is driven by the driving rack 13 to ascend along the slide rail II 8, so that the bag opening assembly 2 is separated from the packaging bag 9, and then the vacuum suction cup 52 releases the packaging bag 9 filled with the material, and the next operation process is performed.

[0039] The vertical sliding position of the carrying plate 1 on the slide rail II 8 is adjusted, so that the bag opening clamps 22 can be lowered to the bottom of the packaging bag 9, the height adjustment range of the bag opening assembly 2 is large, the bag opening clamps 22 of the bag opening assembly 2 are expanded by the driving assembly 3 driven by the motor 4, the opening adjustment range of the bag opening clamps 22 is large, so that the opening operation range of the bag opening mechanism on the packaging bags 9 of different specifications is larger, and the applicability of the bag opening mechanism is improved.

[0040] When the bearing plate 1 is lowered with the bag opening assembly 2, the other end of the driving arm two 24 slowly approaches the support seat 51 and is in contact with the roller two 53 on the support seat 51, the two driving arm two 24 is swung through the roller two 53, and the connecting rod 21 is rotated through the driving arm two 24, the bag opening operation is completed through the expansion of the bag opening clamp 22 driven by the connecting rod 21, through the setting of the driving arm two 24, the bag opening failure and the bag opening error of the motor 4 are avoided, the reliability of the bag opening clamp 22 is ensured, and the applicability of the bag opening mechanism is further improved.

[0041] Embodiment two: on the basis of embodiment one, referring to Figure 6 The bevel gear one 36 is coaxially connected with the bevel gear two 37, and the output shaft of the motor 4 is connected with the bevel gear two 37.

[0042] Through the setting of the bevel gear one 36 and the bevel gear two 37, the motor 4 is arranged vertically, the occupation of the horizontal space of the bag opening mechanism is reduced, the bag opening mechanism occupies smaller space, and the layout is more reasonable.

[0043] Through the setting of the roller one 35, the abrasion of the driving arm one 23 is reduced, and through the setting of the roller two 53, the abrasion of the driving arm two 24 is reduced, so that the operation of the bag opening mechanism is more stable and reliable.

[0044] Through the setting of the bevel gear one 36 and the bevel gear two 37, the motor 4 is arranged vertically, the occupation of the horizontal space of the bag opening mechanism is reduced, the bag opening mechanism occupies smaller space, and the layout is more reasonable.

[0045] The technical features not described in the utility model can be realized through or by using the prior art, and will not be repeated here, of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples, the changes, modifications, additions or replacements made by ordinary technical personnel in the technical field within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A bag opening mechanism for a packaging machine, comprising a carrier plate (1) which is arranged in a position above a packaging bag (9) in a liftable manner, characterized in that Also include swing set in the carrying plate (1) on the bag opening assembly (2), for driving the drive assembly (3) of the bag opening assembly (2), the motor (4) connected with the drive assembly (3); The lower position of the bag opening assembly (2) is provided with a separation assembly (5), the separation assembly (5) comprises a support seat (51), a vacuum chuck (52) which can be separated and sucked on both sides of the packaging bag (9), the bag opening assembly (2) comprises two connection rods (21) respectively arranged on the carrying plate (1), two bag opening clamps (22) fixedly arranged on the side of the connection rod (21), a driving arm one (23) fixed at one end of the connection rod (21), a driving arm two (24) fixedly connected with the other end of the connection rod (21), one end of the two bag opening clamps (22) is respectively expanded and supported on the inner side of the packaging bag (9), the other end of the driving arm one (23) is connected with the driving assembly (3), the other end of the driving arm two (24) is abuttable with the support seat (51).

2. The bag opening mechanism for a packaging machine according to claim 1, characterized in that The driving assembly (3) comprises a slide rail one (31) transversely arranged on the carrying plate (1), a vertical plate one (32) and a vertical plate two (33) oppositely arranged on the slide rail one (31), a rack one (321) connected with the vertical plate one (32), a rack two (331) connected with the vertical plate two (33), a spur gear (34) meshing with the rack one (321) and the rack two (331) on both sides, the vertical plate one (32) and the vertical plate two (33) are respectively abutted with the other end of the two driving arm one (23), and the spur gear (34) is connected with the motor (4).

3. The bag opening mechanism for a packaging machine according to claim 2, characterized in that The side of the vertical plate one (32) and the vertical plate two (33) is provided with a roller one (35), and the side of the roller one (35) is abutted with the other end of the driving arm one (23).

4. The bag opening mechanism for a packaging machine according to claim 2, characterized in that, The other end of the bag opening clamp (22) is provided with a support table one (221), the carrying plate (1) is provided with a support table two (11), and the support table one (221) and the support table two (11) are provided with a return spring (12) therebetween.

5. The bag opening mechanism for a packaging machine according to claim 2, characterized in that, The support seat (51) is provided with two rollers two (53), and the other end of the two driving arm two (24) is respectively abutted with the side of the roller two (53).

6. The bag opening mechanism for a packaging machine according to claim 2, characterized in that The spur gear (34) is coaxially connected with a bevel gear one (36), the output shaft of the motor (4) is connected with a bevel gear two (37), and the bevel gear one (36) is engaged with the bevel gear two (37).

7. The bag opening mechanism for a packaging machine according to claim 1, characterized in that, The carrying plate (1) is provided with a chute (6), and the discharge port of the chute (6) is arranged between the two bag opening clamps (22).

8. The bag opening mechanism for a packaging machine according to claim 1, characterized in that, The carrying plate (1) is provided with a spiral cable (7), and the cable (7) is electrically connected with the motor (4).

9. The bag opening mechanism for a packaging machine according to claim 1, characterized in that, The driving rack (13) is arranged on the bearing plate (1), the bearing plate (1) is slidably connected with the slide rail two (8), and the bearing plate (1) is vertically slidably arranged on the slide rail two (8) through the driving rack (13).

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