Bag opening mechanism of bag feeding machine

Abstract

The utility model relates to the technical field of bag opening mechanisms, in particular to a bag opening mechanism of a bag feeding machine, the bag opening mechanism is arranged above a supporting part and located between two bag suction parts, the bag opening mechanism comprises two bag opening parts, each bag opening part comprises an upper fixing part and a sliding part, the sliding part is arranged on the side face of the upper fixing part in a sliding mode, and the bag opening parts are connected with the sliding part. When the sliding part slides downwards along the upper fixing part, the height of the bag opening part is increased, and when the sliding part slides upwards along the upper fixing part, the height of the bag opening part is decreased; the sliding plate capable of sliding is arranged on the inner surface of the upper supporting plate to adjust the height of the bag opening part, when the sliding plate moves upwards along the upper supporting plate, the height of the bag opening part is reduced, and the bag opening device is suitable for supporting shallow packaging bags; when the sliding plate moves downwards along the upper supporting plate, the height of the bag supporting part is increased, and the bag supporting part is suitable for supporting a deep packaging bag; the non-return plates are meshed with each other to prevent the sliding plate from sliding, the bag opening part is fixed to the proper height, and the packaging bag opening is opened.

Description

Technical Field

[0001] This utility model relates to the technical field of bag-supporting mechanisms, and in particular to a bag-supporting mechanism for a bag-feeding machine. Background Technology

[0002] The bag-opening mechanism is a key component used to automatically open and expand pre-made bags during the packaging process. It first separates and opens the stacked pre-made bags (such as three-side seal bags, stand-up pouches, zipper bags, etc.), and the bag-opening mechanism keeps the bag opening open to facilitate subsequent filling, vacuuming, or sealing operations. The packaging bags supported by this bag-opening mechanism are suitable for high-end packaging needs of liquid substances such as beverages and oral liquids.

[0003] Chinese patent application CN202123405211.8 describes a bag-opening mechanism for a bag-feeding machine. The mechanism uses a motor on a column to drive a lead screw, which in turn rotates a sliding block within a groove, causing the sliding seat to rise and fall. This, in turn, raises and lowers the bag-opening auxiliary strip. A first cylinder in the groove can be activated to move a support seat within the sliding seat, and a second cylinder can be activated to swing a swinging rod, which in turn swings the bag-opening auxiliary strip at the end of the fixed rod, thus completing the bag-opening process. The opening amplitude can be adjusted. However, this bag-opening mechanism cannot adjust the length of the bag-opening strip and cannot adapt to packaging bags of different depths. Utility Model Content

[0004] The main purpose of this utility model is to provide a bag-supporting mechanism for a bag feeding machine, so as to solve the problem that the bag-supporting mechanism proposed in the related technology cannot adjust the length of the bag-supporting strip and cannot adapt to packaging bags of different depths.

[0005] To achieve the above objectives, according to one aspect of the present invention, a bag-supporting mechanism for a bag-feeding machine is provided, comprising a support part, a pushing part disposed on the upper left side of the support part, and two bag-clamping parts disposed on the inner sides of the front end of the pushing part, and further comprising: a bag-suction part, wherein there are two bag-suction parts, both disposed above the support part, for opening the packaging bag opening;

[0006] A bag-supporting mechanism is provided above the support part and between the two suction bag parts. The bag-supporting mechanism includes two bag-supporting parts, each of which includes an upper fixed part and a sliding part. The sliding part is slidably disposed on the side of the upper fixed part. When the sliding part slides downward along the upper fixed part, the height of the bag-supporting part increases. When the sliding part slides upward along the upper fixed part, the height of the bag-supporting part decreases.

[0007] Furthermore, the support includes a base plate, a main support column, and a main support plate. The main support column is fixedly mounted on the right end of the upper surface of the base plate, and the main support plate is fixedly mounted on the top of the main support column.

[0008] Furthermore, the pushing part includes a bag clamping column, a horizontal plate, two vertical plates and a first electric cylinder. The bag clamping column is fixedly installed on the left end of the upper surface of the base plate, the horizontal plate is fixedly installed on the inner side of the top of the bag clamping column, the vertical plates are respectively fixedly installed at both ends of the horizontal plate, and the first electric cylinder is fixedly installed in the middle of the inner surface of the horizontal plate.

[0009] Furthermore, the bag clamping part includes a connecting plate, a connecting rod, a rear clamping plate, and a front clamping plate. Both ends of the connecting plate are slidably connected to the longitudinal plates on both sides and fixedly connected to the piston rod of the first electric cylinder. The rear clamping plate is fixedly disposed on the inner side of the longitudinal plate, and the front clamping plate is slidably disposed on the inner side of the longitudinal plate and located in front of the rear clamping plate. The connecting rod passes through the rear clamping plate and is slidably connected to the rear clamping plate. One end of the connecting rod is fixedly connected to the connecting plate, and the other end is fixedly connected to the front clamping plate.

[0010] Furthermore, the suction bag part includes a second electric cylinder, a U-shaped rod, and a suction cup. The second electric cylinder is fixedly installed at the bottom of the main support plate. One end of the U-shaped rod is fixedly connected to the piston rod of the second electric cylinder, and the other end is fixedly connected to the suction cup.

[0011] Furthermore, the bag-supporting mechanism also includes a third electric cylinder and a push plate. The third electric cylinder is fixedly mounted on the bottom of the main support plate, and the push plate is located below the third electric cylinder and is fixedly connected to the piston rod of the third electric cylinder.

[0012] Furthermore, the upper fixing part includes an upper support plate, several check valves, and two guide parts. The guide parts are respectively disposed on the left and right sides of the upper support plate. Each guide part includes two blocking blocks, a sliding groove, and a baffle. The sliding part includes several check valves, a sliding plate, a support bag protrusion, and two sliders. The upper support plate is fixedly disposed at the end of the push plate. Several check valves are fixedly disposed on the inner surface of the upper support plate. The baffle is fixedly disposed on both sides of the upper support plate. The sliding groove is disposed between the baffle and the upper support plate. The blocking blocks are respectively fixedly disposed at the upper and lower ends of the baffle and located at both ends of the sliding groove. The sliders are fixedly disposed on both sides of the top of the sliding plate and slide within the sliding groove. The support bag protrusion is fixedly disposed at the bottom end of the sliding plate. Several check valves are fixedly disposed on the outer surface of the sliding plate.

[0013] Furthermore, the check valve includes a check plate, a plurality of check protrusions and a plurality of check grooves. The check protrusions are fixedly disposed on the upper and lower sides of the check plate, and the check grooves are disposed on the upper and lower sides of the check plate. The check protrusions and check grooves are arranged alternately.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention adjusts the height of the bag-supporting part by setting a sliding plate on the inner surface of the upper support plate. When the sliding plate moves up along the upper support plate, the height of the bag-supporting part decreases, which is suitable for supporting shallower packaging bags; when the sliding plate moves down along the upper support plate, the height of the bag-supporting part increases, which is suitable for supporting deeper packaging bags; the anti-return plates interlock with each other to prevent the sliding plate from sliding, fix the bag-supporting part at a suitable height, and open the packaging bag opening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0017] Figure 2 This is a schematic diagram of the bag-supporting mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the bag support structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the sliding part structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the check valve structure of this utility model.

[0021] Illustration:

[0022] 1. Support structure; 11. Base plate; 12. Main support column; 13. Main support plate;

[0023] 2. Pushing section; 21. Bag clamping column; 22. Horizontal plate; 23. Vertical plate; 24. First electric cylinder;

[0024] 3. Bag clamping part; 31. Connecting plate; 32. Connecting rod; 33. Rear clamping plate; 34. Front clamping plate;

[0025] 4. Suction bag section; 41. Second electric cylinder; 42. U-shaped rod; 43. Suction cup;

[0026] 5. Bag-supporting mechanism; 51. Third electric cylinder; 52. Push plate; 53. Bag-supporting part; 531. Upper support plate; 532. Check valve; 533. Block; 534. Slide groove; 535. Baffle; 536. Sliding plate; 537. Bag-supporting protrusion; 538. Sliding block; 5321. Check valve; 5322. Check valve protrusion; 5323. Check valve groove. Detailed Implementation

[0027] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0028] Please see Figures 1 to 5This embodiment provides a bag-supporting mechanism for a bag-feeding machine, including a support part 1, a pushing part 2 located on the upper left side of the support part 1, and two bag-clamping parts 3 located on the inner sides of the front end of the pushing part 2. It also includes a bag-suction part 4, which has two parts, both located above the support part 1, for opening the packaging bag opening.

[0029] The bag-supporting mechanism 5 is located above the support part 1 and between the two suction bag parts 4. The bag-supporting mechanism 5 includes two bag-supporting parts 53. Each bag-supporting part 53 includes an upper fixed part and a sliding part. The sliding part is slidably disposed on the side of the upper fixed part. When the sliding part slides downward along the upper fixed part, the height of the bag-supporting part 53 increases. When the sliding part slides upward along the upper fixed part, the height of the bag-supporting part 53 decreases.

[0030] The support part 1 includes a base plate 11, a main support column 12 and a main support plate 13. The main support column 12 is fixedly installed on the right end of the upper surface of the base plate 11, and the main support plate 13 is fixedly installed on the top of the main support column 12.

[0031] The pushing part 2 includes a bag clamping column 21, a horizontal plate 22, two vertical plates 23 and a first electric cylinder 24. The bag clamping column 21 is fixedly installed on the left end of the upper surface of the bottom plate 11, the horizontal plate 22 is fixedly installed on the inner side of the top of the bag clamping column 21, the vertical plates 23 are respectively fixed at both ends of the horizontal plate 22, and the first electric cylinder 24 is fixedly installed in the middle of the inner surface of the horizontal plate 22.

[0032] The bag clamping part 3 includes a connecting plate 31, a connecting rod 32, a rear clamping plate 33 and a front clamping plate 34. Both ends of the connecting plate 31 are slidably connected to the longitudinal plates 23 on both sides and are fixedly connected to the piston rod of the first electric cylinder 24. The rear clamping plate 33 is fixedly disposed inside the longitudinal plate 23, and the front clamping plate 34 is slidably disposed inside the longitudinal plate 23 and located in front of the rear clamping plate 33. The connecting rod 32 passes through the rear clamping plate 33 and is slidably connected to the rear clamping plate 33. One end of the connecting rod 32 is fixedly connected to the connecting plate 31, and the other end is fixedly connected to the front clamping plate 34.

[0033] The suction bag part 4 includes a second electric cylinder 41, a U-shaped rod 42 and a suction cup 43. The second electric cylinder 41 is fixedly installed at the bottom of the main support plate 13. One end of the U-shaped rod 42 is fixedly connected to the piston rod of the second electric cylinder 41, and the other end is fixedly connected to the suction cup 43.

[0034] The bag-supporting mechanism 5 also includes a third electric cylinder 51 and a push plate 52. The third electric cylinder 51 is fixedly installed at the bottom of the main support plate 13, and the push plate 52 is located below the third electric cylinder 51 and is fixedly connected to the piston rod of the third electric cylinder 51.

[0035] The upper fixed part includes an upper support plate 531, several check valves 532, and two guide parts. The guide parts are respectively located on the left and right sides of the upper support plate 531. Each guide part includes two blocking blocks 533, a sliding groove 534, and a baffle 535. The sliding part includes several check valves 532, a sliding plate 536, a support protrusion 537, and two sliders 538. The upper support plate 531 is fixedly mounted on the end of the push plate 52. Several check valves 532 are fixedly provided on the inner surface of the upper support plate 531. 2. The baffle 535 is fixedly installed on both sides of the upper support plate 531. The slide groove 534 is installed on the baffle 535 and the upper support plate 531. The blocking block 533 is fixedly installed on the upper and lower ends of the baffle 535 and located at both ends of the slide groove 534. The slider 538 is fixedly installed on both sides of the top of the sliding plate 536 and is slidably installed in the slide groove 534. The support bag protrusion 537 is fixedly installed on the bottom end of the sliding plate 536. Several check parts 532 are fixedly installed on the outer surface of the sliding plate 536.

[0036] The width of the bag-supporting protrusion 537 is small, making it easy to insert into the packaging bag and facilitating the support part 53 to support the packaging bag.

[0037] The check section 532 includes a check plate 5321, a plurality of check protrusions 5322 and a plurality of check grooves 5323. The check protrusions 5322 are fixedly disposed on the upper and lower sides of the check plate 5321, and the check grooves 5323 are disposed on the upper and lower sides of the check plate 5321. The check protrusions 5322 and the check grooves 5323 are arranged alternately.

[0038] The sliding plate 536 and the check plate 5321 on the upper support plate 531 interlock with each other. The interlocking force is greater than the weight of the sliding plate 536, which can fix the sliding plate 536 on the upper support plate 531. The tip of the check plate 5321 on the sliding plate 536 is provided with a rubber head. The rubber head is soft and will not tear the packaging bag.

[0039] The check plate 5321 is made of polyoxymethylene, which has high rigidity, wear resistance, and is easy to recover after deformation, and can provide greater support for the sliding plate 536.

[0040] When the third electric cylinder 51 drives the bag-supporting part 53 to retract upwards, the bottom of the bag-supporting part 53 is higher than the top surface of the suction cup 43, which will not affect the suction cup 43 from opening the bag opening; the distance between the two suction cups 43 after opening the bag opening is greater than the width of the outermost point of the two bag-supporting parts 53, which will not affect the up-and-down movement of the bag-supporting part 53 to open the packaging bag.

[0041] With the packaging bag opening upwards, its two sides are positioned between the rear clamping plates 33 and the front clamping plates 34 on either side. The first electric cylinder 24 is activated, pulling the front clamping plate 34 towards the rear clamping plate 33 on the same side via the connecting plate 31 and connecting rod 32, clamping the sides of the packaging bag. Simultaneously, two second electric cylinders 41 are activated, pushing suction cups 43 towards the packaging bag via U-shaped rods 42. As the two suction cups 43 press against each other, they respectively adhere to both sides of the packaging bag. The second electric cylinders 41 retract, pulling the suction cups 43 outwards, causing both sides of the packaging bag to move outwards with the suction cups 43, opening the bag. The third electric cylinder 51 is then activated, pushing the bag-supporting part 53 downwards via the push plate 52, extending it into the packaging bag and supporting it.

[0042] If the packaging bag is shallow, pushing the sliding plate 536 upward causes the sliding plate 536 and the check plate 5321 on the upper support plate 531 to deform against each other, allowing the sliding plate 536 to move upward along the upper support plate 531. This reduces the height of the bag-supporting section 53, making it suitable for supporting shallow packaging bags. If the packaging bag is deep, pushing the sliding plate 536 downward causes the sliding plate 536 and the check plate 5321 on the upper support plate 531 to deform against each other, allowing the sliding plate 536 to move downward along the upper support plate 531. This increases the height of the bag-supporting section 53, making it suitable for supporting deeper packaging bags. When the sliding plate 536 is no longer pushed, the sliding plate 536 and the check plate 5321 on the upper support plate 531 no longer deform against each other, and the check plate 5321 returns to its original shape. The sliding plate 536 and the check plate 5321 on the upper support plate 531 then interlock, preventing the sliding plate 536 from sliding and fixing the bag-supporting section 53 at a suitable height.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A bag-supporting mechanism for a bag-feeding machine, comprising a support part (1), a pushing part (2) disposed on the upper left side of the support part (1), and two bag-clamping parts (3) disposed on the inner sides of the front ends of the pushing part (2), characterized in that, Also includes: There are two suction bag parts (4), both located above the support part (1), for opening the packaging bag opening; The bag-supporting mechanism (5) is located above the support part (1) and between the two suction bag parts (4). The bag-supporting mechanism (5) includes two bag-supporting parts (53). Each bag-supporting part (53) includes an upper fixed part and a sliding part. The sliding part is slidably disposed on the side of the upper fixed part. When the sliding part slides downward along the upper fixed part, the height of the bag-supporting part (53) increases. When the sliding part slides upward along the upper fixed part, the height of the bag-supporting part (53) decreases.

2. The bag-supporting mechanism of the bag-feeding machine according to claim 1, characterized in that, The support part (1) includes a base plate (11), a main column (12) and a main support plate (13). The main column (12) is fixedly installed on the right end of the upper surface of the base plate (11), and the main support plate (13) is fixedly installed on the top of the main column (12).

3. The bag-supporting mechanism of the bag-feeding machine according to claim 2, characterized in that, The pushing part (2) includes a bag clamping column (21), a horizontal plate (22), two vertical plates (23) and a first electric cylinder (24). The bag clamping column (21) is fixedly installed on the left end of the upper surface of the bottom plate (11). The horizontal plate (22) is fixedly installed on the inner side of the top of the bag clamping column (21). The vertical plates (23) are respectively fixedly installed at both ends of the horizontal plate (22). The first electric cylinder (24) is fixedly installed in the middle of the inner surface of the horizontal plate (22).

4. The bag-supporting mechanism of the bag-feeding machine according to claim 3, characterized in that, The bag clamping part (3) includes a connecting plate (31), a connecting rod (32), a rear clamping plate (33) and a front clamping plate (34). Both ends of the connecting plate (31) are slidably connected to the longitudinal plates (23) on both sides and fixedly connected to the piston rod of the first electric cylinder (24). The rear clamping plate (33) is fixedly disposed inside the longitudinal plate (23). The front clamping plate (34) is slidably disposed inside the longitudinal plate (23) and located in front of the rear clamping plate (33). The connecting rod (32) passes through the rear clamping plate (33) and is slidably connected to the rear clamping plate (33). One end of the connecting rod (32) is fixedly connected to the connecting plate (31) and the other end is fixedly connected to the front clamping plate (34).

5. The bag-supporting mechanism of the bag-feeding machine according to claim 2, characterized in that, The suction bag part (4) includes a second electric cylinder (41), a U-shaped rod (42) and a suction cup (43). The second electric cylinder (41) is fixedly installed at the bottom of the main support plate (13). One end of the U-shaped rod (42) is fixedly connected to the piston rod of the second electric cylinder (41), and the other end is fixedly connected to the suction cup (43).

6. The bag-supporting mechanism of the bag-feeding machine according to claim 2, characterized in that, The bag-supporting mechanism (5) also includes a third electric cylinder (51) and a push plate (52). The third electric cylinder (51) is fixedly installed at the bottom of the main support plate (13), and the push plate (52) is located below the third electric cylinder (51) and is fixedly connected to the piston rod of the third electric cylinder (51).

7. The bag-supporting mechanism of the bag-feeding machine according to claim 6, characterized in that, The bag-supporting part (53) includes an upper fixing part and a sliding part. The upper fixing part includes an upper support plate (531), several check parts (532), and two guide parts. The guide parts are respectively disposed on the left and right sides of the upper support plate (531). The guide parts include two blocking blocks (533), a sliding groove (534), and a baffle (535). The sliding part includes several check parts (532), a sliding plate (536), a bag-supporting protrusion (537), and two sliders (538). The upper support plate (531) is fixedly disposed at the end of the push plate (52). The inner surface of the upper support plate (531) is fixedly provided with... A plurality of check valves (532) are provided. The baffle (535) is fixedly disposed on both sides of the upper support plate (531). The slide groove (534) is disposed on the baffle (535) and the upper support plate (531). The blocking block (533) is fixedly disposed on the upper and lower ends of the baffle (535) and located at both ends of the slide groove (534). The slider (538) is fixedly disposed on both sides of the top of the sliding plate (536) and is slidably disposed in the slide groove (534). The support protrusion (537) is fixedly disposed on the bottom end of the sliding plate (536). A plurality of check valves (532) are fixedly disposed on the outer surface of the sliding plate (536).

8. The bag-supporting mechanism of the bag-feeding machine according to claim 7, characterized in that, The check valve (532) includes a check plate (5321), a plurality of check protrusions (5322) and a plurality of check grooves (5323). The check protrusions (5322) are fixedly disposed on the upper and lower sides of the check plate (5321), and the check grooves (5323) are disposed on the upper and lower sides of the check plate (5321). The check protrusions (5322) and the check grooves (5323) are arranged alternately.

Images