Feeding shaft structure of bag making machine and bag making machine applying same

Abstract

The utility model discloses a bag making machine feeding shaft structure and a bag making machine using the same, and relates to the technical field of bag making equipment, the bag making machine feeding shaft structure comprises a main shaft, two conical sleeves are arranged on the main shaft, through holes in sliding fit with the main shaft are formed in the conical sleeves, the small-diameter ends of the conical sleeves are inserted into the inner diameter of a charging barrel, and the conical surfaces of the conical sleeves support the charging barrel; the conical sleeve is detachably sleeved with the conical gasket, through the conical surface of the conical sleeve, the conical sleeve can be matched with charging barrels with different inner diameters and support the charging barrels, so that the charging barrels are fixed, the detachable conical gaskets are additionally arranged on the conical sleeve, the conical gaskets can be arranged in a sleeving mode according to requirements, and the conical gaskets can be additionally arranged according to the charging barrels with different inner diameters; therefore, the taper of the conical sleeve is changed, the maximum diameter of the conical sleeve is changed, and the taper of the conical sleeve can be changed to be matched with the charging barrel when the current conical sleeve cannot be matched with the inner diameter of the charging barrel, so that the taper of the conical sleeve is flexible and adjustable, and the effect of high adaptability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of bag making equipment technology, and in particular to a bag making machine feeding shaft structure and a bag making machine using the same. Background Technology

[0002] A bag-making machine is a machine that produces various plastic or other material packaging bags. Its processing range includes packaging bags of various sizes, thicknesses, and specifications made of plastic or other materials, with plastic packaging bags being the main product.

[0003] Existing bag-making machines typically include a feeding device, a conveying device, a hot-cutting device, a cold-pressing device, a conveying device, and a discharge device. The feeding device is used to mount the film tube and transport the raw film forward. The core structure of the feeding device is the feeding shaft, which generally includes a main shaft and two fixing sleeves on the main shaft for securing the film tube. During the bag production process, the feeding shaft needs to pass through the film tube, and then the two fixing sleeves are moved towards the center and pushed into the interior of the film tube to secure it. However, in actual use, the fixing sleeves at both ends of the existing feeding shaft cannot accommodate film tubes with different inner diameters. When changing to different sizes of film tubes, the existing method involves replacing the fixing sleeves with the corresponding size, resulting in poor flexibility.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding shaft structure for a bag making machine, including a main shaft, on which two conical sleeves are provided, and through holes that slide with the main shaft are opened on the conical sleeves. The small-diameter end of the conical sleeve is inserted into the inner diameter of the material cylinder, so that the conical surface of the conical sleeve supports the material cylinder.

[0007] A tapered washer is detachably fitted onto the tapered sleeve.

[0008] As a further embodiment of this utility model: a connecting surface is provided on the side of the tapered sleeve near the large diameter end, the connecting surface has a connecting thread, the large diameter end of the tapered washer is provided with a connecting ring, the inner wall of the connecting ring is provided with an internal thread that can be screwed into the connecting thread, and the outer wall of the connecting ring is provided with an external thread.

[0009] As a further embodiment of this utility model: a soft rubber sleeve is nested on the conical surface of the conical washer, and the surface of the soft rubber sleeve matches the surface of the conical washer to form a continuous conical surface.

[0010] As a further embodiment of this utility model: scale lines are provided at both ends of the spindle surface.

[0011] As a further embodiment of this utility model: the large-diameter end of the tapered sleeve is connected to a positioning sleeve fitted on the main shaft, the inner wall of the positioning sleeve is provided with a movable groove, the movable groove is provided with a positioning block that can be guided and moved up and down, the surface of the positioning sleeve is provided with a screw hole that communicates with the movable groove, a bolt is screwed into the screw hole, the bolt extends into the movable groove and is rotatably connected to the positioning block.

[0012] As a further embodiment of this utility model: the surface of the soft rubber sleeve is provided with multiple strip grooves.

[0013] As a further embodiment of this utility model: the lower end of the positioning block has an arc surface that fits with the surface of the main shaft, and the lower end of the positioning block is provided with anti-slip soft rubber.

[0014] This utility model also proposes a bag making machine, which includes the above-described bag making machine feeding shaft structure.

[0015] Compared with the prior art, the beneficial effects of this technical solution are as follows: When assembling the barrel, the tapered sleeve on one side is removed from the main shaft, then the main shaft is passed through the inner diameter of the barrel, and then the removed tapered sleeve is reinstalled on the main shaft. At this time, the two tapered sleeves are pushed towards the middle, so that the small diameter ends of the two tapered sleeves are inserted into the inner diameter of the barrel, so that the tapered surface of the tapered sleeve supports the barrel, thereby fixing the barrel and preventing slippage when the barrel is fed.

[0016] The conical sleeve has an inclined conical surface, which in turn gives it a frustum of a cone with progressively increasing diameters. This allows it to fit barrels of different inner diameters, supporting and fixing the barrel. Removable conical washers are added to the conical sleeve, and multiple washers can be fitted as needed. The number of washers can be adjusted according to the barrel's inner diameter, thus changing the conical sleeve's taper and maximum diameter. This allows the conical sleeve to adapt to different barrel diameters by changing its taper, making it highly adaptable.

[0017] Furthermore, the tapered washer can protect the surface of the tapered sleeve, reducing wear during frequent disassembly and assembly of the barrel. When the tapered washer is damaged, it can be replaced, thereby extending the service life of the tapered sleeve.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a front view structural diagram of the present invention;

[0022] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 4 This is a structural schematic diagram of the conical sleeve and conical washer of this utility model;

[0024] Figure 5 yes Figure 3 Enlarged schematic diagram of the local structure at point B;

[0025] The corresponding labels in the attached diagram are explained as follows:

[0026] 1. Spindle; 2. Tapered sleeve; 21. Through hole; 22. Connecting surface; 23. Connecting thread; 3. Tapered washer; 31. Connecting ring; 32. Internal thread; 33. External thread; 4. Soft rubber sleeve; 41. Strip groove; 5. Positioning sleeve; 51. Movable groove; 52. Positioning block; 53. Screw hole; 54. Bolt; 55. Anti-slip soft rubber; 6. Scale line. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 A feeding shaft structure for a bag making machine includes a main shaft 1, on which two conical sleeves 2 are provided. The conical sleeves 2 have through holes 21 that slide with the main shaft 1. The small diameter end of the conical sleeve 2 is inserted into the inner diameter of the material cylinder, so that the conical surface of the conical sleeve 2 supports the material cylinder.

[0029] A tapered washer 3 is detachably fitted onto the tapered sleeve 2.

[0030] Specifically, during the assembly of the material cylinder, the main shaft 1 is removed from the bag making machine, and the conical sleeve 2 is slidably set on the main shaft 1 through the through hole 21. Then, one side of the conical sleeve 2 can be removed from the main shaft 1. Subsequently, the main shaft 1 is passed through the inner diameter of the material cylinder, and then the removed conical sleeve 2 is reinstalled on the main shaft 1. At this time, the two conical sleeves 2 are pushed towards the middle, so that the small diameter ends of the two conical sleeves 2 are inserted into the inner diameter of the material cylinder, so that the conical surface of the conical sleeve 2 supports the material cylinder, thereby fixing the material cylinder and preventing slippage when the material cylinder is fed into the roll.

[0031] The conical sleeve 2 has an inclined conical surface, which makes it a frustum with progressively increasing diameter, allowing it to fit different inner diameter cylinders and support them for fixation. A detachable conical washer 3 is added to the conical sleeve 2, and multiple conical washers 3 can be fitted as needed. The number of conical washers 3 can be increased according to the inner diameter of the cylinder, thereby changing the taper of the conical sleeve 2 and its maximum diameter. When the current conical sleeve 2 cannot fit the inner diameter of the cylinder, the taper of the conical sleeve 2 can be changed to fit the cylinder, making the taper of the conical sleeve 2 flexible and adjustable, with a high adaptability.

[0032] Furthermore, by setting the conical washer 3, the surface of the conical sleeve 2 can be protected, reducing the wear on the conical sleeve 2 during frequent disassembly and assembly of the barrel. When the conical washer 3 is damaged, it can be replaced, thereby improving the service life of the conical sleeve 2.

[0033] Based on the above embodiments, it is further proposed that a connecting surface 22 is provided on the side of the tapered sleeve 2 near the large diameter end, the connecting surface 22 has a connecting thread 23, the large diameter end of the tapered washer 3 is provided with a connecting ring 31, the inner wall of the connecting ring 31 is provided with an internal thread 32 that can be screwed with the connecting thread 23, and the outer wall of the connecting ring 31 is provided with an external thread 33.

[0034] Specifically, after removing the conical sleeve 2 from the main shaft 1, the large-diameter end of the conical washer 3 is nested into the small-diameter end of the conical sleeve 2. Simultaneously, the conical washer 3 is rotated so that the internal thread 32 of the inner wall of the connecting ring 31 engages with the connecting thread 23 on the connecting surface 22, thereby achieving a fixed nesting of the conical washer 3 and the conical sleeve 2. At the same time, an external thread 33 is provided on the outer wall of the connecting ring 31, allowing a second conical washer 3 to be nested outside the first conical washer 3 in the same manner. Figure 4 As shown.

[0035] Furthermore, a soft rubber sleeve 4 is nested on the conical surface of the conical washer 3, and the surface of the soft rubber sleeve 4 matches the surface of the conical washer 3 to form a continuous conical surface.

[0036] Specifically, by nesting a soft rubber sleeve 4 on the conical surface of the conical washer 3, the friction between the two can be increased when supporting the inner diameter of the barrel, thereby further increasing the anti-slip properties between the conical washer 3 and the barrel.

[0037] Furthermore, the surface of the soft rubber sleeve 4 and the surface of the conical washer 3 form a conical surface, that is, a corresponding embedding groove is provided on the conical surface of the conical washer 3, and the soft rubber sleeve 4 is embedded in the embedding groove to avoid the surface of the conical washer 3 from having a protrusion that would affect the subsequent increase in the number of conical washers 3.

[0038] The soft rubber sleeve 4 is preferably made of rubber material.

[0039] Furthermore, the surface of the soft rubber sleeve 4 is provided with multiple strip grooves 41.

[0040] Specifically, by opening multiple strip grooves 41, the surface of the soft rubber sleeve 4 forms a continuous concave-convex surface. When the surface of the soft rubber sleeve 4 contacts the inner diameter of the material cylinder, the protruding part is embedded in the micro-concave part of the inner wall of the material cylinder, increasing the biting friction force, so as to further improve the anti-slip performance between the soft rubber sleeve 4 and the material cylinder.

[0041] Based on the above embodiments, it is further proposed that the large-diameter end of the tapered sleeve 2 is connected to a positioning sleeve 5 sleeved on the main shaft 1. The inner wall of the positioning sleeve 5 is provided with a movable groove 51. A positioning block 52 that can be guided and moved up and down is provided in the movable groove 51. A screw hole 53 communicating with the movable groove 51 is provided on the surface of the positioning sleeve 5. A bolt 54 is screwed into the screw hole 53. The bolt 54 extends into the movable groove 51 and is rotatably connected to the positioning block 52.

[0042] Specifically, after moving the two conical sleeves 2 towards the center to clamp the material cylinder, the bolt 54 on the positioning sleeve 5 is rotated. The bolt 54 is screwed into the screw hole 53, allowing it to move downwards during rotation. When it moves downwards, it pushes the positioning block 52 in the movable groove 51 against the main shaft 1, thereby establishing a positioning relationship between the positioning sleeve 5 and the main shaft 1. This fixes the position of the conical sleeve 2, preventing it from moving during material feeding and causing the material cylinder to loosen.

[0043] The positioning block 52 is positioned in the movable groove 51 and can be guided up and down. The bolt 54 is rotatably connected to the positioning block 52. For example, the rotatable connection can be achieved through a bearing. This allows the positioning block 52 to remain stationary when the bolt 54 pushes the positioning block 52 down to press the spindle 1, thereby reducing the friction between the positioning block 52 and the spindle 1 during the pressing process. This improves the service life of the positioning block 52 and the spindle 1, and prevents excessive wear on the surface.

[0044] Furthermore, the lower end of the positioning block 52 has an arc surface that fits against the surface of the spindle 1, and the lower end of the positioning block 52 is provided with anti-slip soft rubber 55.

[0045] Specifically, the lower end of the positioning block 52 is provided with an arc surface that fits the spindle 1, which can increase the fit between the positioning block 52 and the spindle 1, thereby increasing the fixing effect between them. The anti-slip soft rubber 55 is provided to improve the anti-slip properties and prevent slippage. The shape of the anti-slip soft rubber 55 matches the arc surface.

[0046] Based on the above embodiments, it is further proposed that scale lines 6 are provided at both ends of the surface of the main shaft 1. The positions of the two conical sleeves 2 can be observed through the scale lines 6, so that the advancing distance of the two conical sleeves 2 is consistent, thereby ensuring that the material cylinder is in the center and avoiding inaccurate position of the material cylinder, which would affect the accuracy of feeding.

[0047] Based on the above-mentioned bag making machine feeding shaft structure, this utility model also provides a bag making machine, which includes the bag making machine feeding shaft structure of any of the above-mentioned items. In the process of packaging bag production, the bag making machine feeding shaft structure is set at the feeding station of the bag making machine.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A feeding shaft structure for a bag making machine, characterized in that, Includes a main shaft (1), on which two tapered sleeves (2) are provided. The tapered sleeves (2) are provided with through holes (21) that slide with the main shaft (1). The small diameter end of the tapered sleeve (2) is inserted into the inner diameter of the material cylinder, so that the tapered surface of the tapered sleeve (2) supports the material cylinder. A conical washer (3) is detachably fitted onto the conical sleeve (2).

2. The bag-making machine feeding shaft structure according to claim 1, characterized in that, The tapered sleeve (2) has a connecting surface (22) on the side near the large diameter end. The connecting surface (22) has a connecting thread (23). The tapered washer (3) has a connecting ring (31) at the large diameter end. The inner wall of the connecting ring (31) has an internal thread (32) that can be screwed into the connecting thread (23), and the outer wall of the connecting ring (31) has an external thread (33).

3. The bag-making machine feeding shaft structure according to claim 2, characterized in that, The tapered washer (3) has a soft rubber sleeve (4) nested on its tapered surface, and the surface of the soft rubber sleeve (4) matches the surface of the tapered washer (3) to form a continuous tapered surface.

4. The bag-making machine feeding shaft structure according to claim 3, characterized in that, The main shaft (1) has scale lines (6) on both ends of its surface.

5. The bag-making machine feeding shaft structure according to claim 4, characterized in that, The large-diameter end of the tapered sleeve (2) is connected to a positioning sleeve (5) fitted onto the main shaft (1). The inner wall of the positioning sleeve (5) is provided with a movable groove (51). A positioning block (52) that can be guided and moved up and down is provided in the movable groove (51). A screw hole (53) that communicates with the movable groove (51) is provided on the surface of the positioning sleeve (5). A bolt (54) is screwed into the screw hole (53). The bolt (54) extends into the movable groove (51) and is rotatably connected to the positioning block (52).

6. The bag-making machine feeding shaft structure according to claim 5, characterized in that, The surface of the soft rubber sleeve (4) is provided with multiple strip grooves (41).

7. The bag-making machine feeding shaft structure according to claim 5, characterized in that, The lower end of the positioning block (52) has an arc surface that fits against the surface of the spindle (1), and the lower end of the positioning block (52) is provided with anti-slip soft rubber (55).

8. A bag-making machine, characterized in that, The invention includes a feeding shaft structure for a bag making machine as described in any one of claims 1-7.

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