A cutting assembly for a handbag

Abstract

The utility model relates to packing bag processing technical field, concretely is a kind of cutter assembly of handbag.The utility model includes the support plate of inner plate face laminating film roll and the cutter of fixed on the driving part of driving assembly and perpendicular to the reciprocating puncture motion of inner plate face of support plate, and first through-hole is opened in support plate to avoid cutter puncture;The driving part of driving assembly is also elastically installed with the resistance pressure rolling part, when the driving part does puncture's progress action, resistance pressure rolling part elastically presses the film roll of first through-hole outer edge before cutter puncture mould group film roll, and forms rolling cooperation with the film roll of conveying state.The utility model cutter does not need more than the conveying path of the film roll of handle part, effectively avoid the film roll of cutter puncture bag body part.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag processing technology, specifically a cutting assembly for tote bags. Background Technology

[0002] When the packaging bag is large, a handle is provided on the packaging bag for easy handling by the user, forming a tote bag. Its structure is described in the text entitled "Composite Packaging Bag with Handles" with Chinese Patent Publication No. CN217674465U.

[0003] When the handle-type packaging bag is made of plastic material processed by heat sealing, both the bag body and handle distribution are processed by unwinding the film roll, followed by cutting, folding, and heat sealing. In some handling bag processing devices, the film rolls for the handle and bag body are conveyed through the same conveying unit to achieve a one-to-one correspondence between the handle and bag body. Since each bag body often requires two handle straps, these two straps are formed by cutting the film roll during conveying. Because some handling strap processing requirements do not allow for complete severing at both ends of the two handle straps constituting a bag body, the cutter needs to retract after cutting one bag body's handle strap, waiting for the next bag body's handle strap to pass before piercing and cutting the film roll again. That is, the cutter performs a reciprocating motion of piercing and cutting the film roll perpendicular to the conveying direction of the film roll.

[0004] However, in practice, due to the considerable toughness of the plastic film rolls and the fact that they are only tensioned by rollers during transport, the film roll deforms synchronously with the cutter during piercing. This often requires the cutter to travel significantly beyond the predetermined transport path to pierce the film roll. Furthermore, since the film rolls for the handle and the bag body share the same transport unit, the cutter may scratch the film roll in the bag body during the piercing process, a problem that urgently needs to be addressed. Utility Model Content

[0005] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a cutting component for a tote bag. The cutter does not require a large conveying path of the film roll beyond the handle, effectively avoiding the cutter puncturing the film roll of the bag body.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cutting assembly for a tote bag includes a support plate with an inner plate surface that adheres to a film roll, and a cutting blade fixed on a drive unit of a drive assembly and perpendicular to the inner plate surface of the support plate, which performs a reciprocating piercing motion. The support plate has a first through hole to avoid piercing by the cutting blade. A pressing rolling part is also elastically mounted on the drive unit of the drive assembly. When the drive unit performs the piercing process, the pressing rolling part elastically presses against the outer edge of the film roll at the first through hole in front of the cutting blade piercing the film roll of the module, and forms a rolling engagement with the film roll in the conveying state.

[0008] As a further embodiment of this utility model: the pressure rolling part includes two side pressure rollers that are rotatably fitted on the fixed seat and distributed on both sides of the cutter blade. The pressure rolling part also includes an upper pressure roller and a lower pressure roller that are rotatably fitted on the fixed seat and distributed on both sides of the cutter along the film roll conveying direction. The rotation axes of the side pressure rollers, the upper pressure roller and the lower pressure roller are all parallel to the inner plate surface of the support plate and perpendicular to the film roll conveying direction.

[0009] As a further embodiment of this utility model: the pressure rolling part includes at least four freely rolling balls mounted on the fixed base, and at least one rolling ball is arranged on both sides of the cutter's blade and on both sides of the cutter along the film roll conveying direction.

[0010] As a further embodiment of this utility model: a second guide slide rod is fixed on the fixed seat of the pressing rolling part and slides in cooperation with the driving part. The sliding direction of the second guide slide rod is parallel to the action direction of the driving part, and a second return spring is provided on the second guide slide rod to elastically press the pressing rolling part against the support plate.

[0011] As a further embodiment of this utility model: a baffle that can block the first through hole is arranged on the outer surface of the support plate, a first guide slide rod that slides with the support plate is fixed on the baffle, and the sliding direction of the first guide slide rod is parallel to the action direction of the driving part. A first return spring is provided on the first guide slide rod to elastically drive the baffle to return to the direction of fitting the outer surface of the support plate.

[0012] As a further embodiment of this utility model: the driving part is fixed with a push rod that can push the baffle away from the support plate, and the front end of the push rod is located in front of the front end of the cutter along the piercing process direction of the driving part.

[0013] As a further embodiment of this utility model: the support plate has a U-shaped structure, and the inner sidewall of the horizontal section of the U-shaped structure forms the inner plate surface of the support plate. The driving part is a driving plate that abuts against the vertical section of the U-shaped structure on both sides and slides with the vertical section. A second through hole is provided on the horizontal section of the support plate to avoid the push rod passing through.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By supporting one side of the film roll with the inner plate of the support plate and pressing the rolling part against the other side of the film roll, when the film roll moves to the first through hole, in addition to being stretched by the inherent take-up and untake-up rollers, the film roll located at the outer edge of the first through hole will be tightened by the combined clamping action of the pressing rolling part and the support plate. At this time, when the cutter pierces the film roll at the first through hole of the support plate, the deformation of the tightened film roll is small. Therefore, the cutter does not need to go too far beyond the conveying path of the film roll during piercing and subsequent cutting of the film roll, effectively preventing the cutter from scratching the bag body.

[0016] 2. The pressure rolling section has two implementation methods: one where the rolling elements are composed of a pressure roller mechanism, and the other where the rolling elements are composed of rolling balls. These methods balance the advantages of a large contact area between the long axis of the roller and the film roll, effectively suppressing deformation of the film roll in the puncture direction, and a small contact area between the rolling balls and the film roll, resulting in less space occupation and facilitating miniaturization. In actual implementation, the appropriate implementation method can be selected based on specific needs.

[0017] 3. A baffle is arranged on the outer surface of the support plate to block the first through hole, preventing the cutter from penetrating the first through hole and causing damage to the film roll of the bag body. At the same time, a first guide rod is fixed on the baffle and slides in conjunction with the support plate. The sliding direction of the first guide rod is parallel to the direction of the drive unit. A first return spring is provided on the first guide rod to elastically drive the baffle to return to its original position against the outer surface of the support plate. This ensures that even if the cutter penetrates the first through hole, the baffle will slide outward synchronously with the cutter, avoiding rigid contact between the cutter and the baffle that could damage the cutter.

[0018] 4. The drive unit is fixed with a push rod that can push the baffle away from the support plate. Before the cutter penetrates the first through hole, the push rod pushes the baffle away from the support plate along the forward direction of the cutter. At this time, even if the cutter penetrates the first through hole, the cutter will not collide with the baffle, further preventing damage to the cutter. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of this utility model.

[0020] Figure 2 This is a rear view structural diagram of the pressure rolling part in this utility model.

[0021] Figure 3 This is a side sectional view of the present invention.

[0022] In the figure: 10, support plate; 11, first through hole; 12, second through hole; 20, baffle; 21, first guide slide rod; 22, first return spring; 30, cutter; 40, drive assembly; 41, drive plate; 50, push rod; 60, second guide slide rod; 61, second return spring; 70, pressing rolling part; 71, upper pressure roller; 72, lower pressure roller; 73, side pressure roller. Detailed Implementation

[0023] 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.

[0024] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:

[0025] The specific structure of this utility model is as follows: Figure 1-3 As shown, its main structure includes a support plate 10 with the inner plate surface of the film roll a, a cutter 30 fixed on the drive part of the drive assembly 40 and reciprocating piercing motion perpendicular to the inner plate surface of the support plate 10, and a first through hole 11 provided on the support plate 10 to avoid piercing by the cutter 30.

[0026] In addition, such as Figure 1-3 As shown, a pressing rolling part 70 is also elastically installed on the driving part of the driving assembly 40. When the driving part performs the piercing process, the pressing rolling part 70 elastically presses against the outer edge of the first through hole 11 of the membrane roll a before the cutter 30 pierces the membrane roll a, and forms a rolling engagement with the membrane roll a in the conveying state.

[0027] The aforementioned method, where the inner plate of the support plate 10 supports one side of the film roll a and the rolling part 70 presses against the other side of the film roll a, ensures that, based on the tensioning of the film roll a during its inherent winding and unwinding roller transport, when the film roll a moves to the first through hole 11, the film roll a located at the outer edge of the first through hole 11 is tightened by the clamping action of the rolling part 70 and the support plate 10. At this time, when the cutter 30 punctures the film roll a at the first through hole 11 of the support plate 10, the deformation of the tightened film roll a is small. Therefore, the cutter 30 does not need to extend too far beyond the transport path of the film roll a during puncturing and subsequent cutting of the film roll a, effectively preventing the cutter 30 from scratching the bag body.

[0028] In the above embodiments, to reduce the resistance of film roll a during the slitting process of the cutter 30, the support plate 10 is preferably made of a smooth metal or ceramic material, so that the resistance of film roll a during transport is small. Furthermore, although the pressing rolling part 70 and the film roll a have an elastic rolling contact, to reduce the frictional force of the film roll a during transport under pressure, the contact point between the pressing rolling part 70 and the film roll a is preferably made of a smooth structure with a low coefficient of friction. In addition, in actual implementation, the elastic force of the pressing rolling part 70 on the film roll a is preferably such that the film roll a can be transported stably during the slitting process, which can be achieved by replacing different springs or sheet structures that generate elastic force in the pressing rolling part 70.

[0029] Obviously, the rolling cooperation between the pressure rolling part 70 and the film roll a will inevitably make the pressure rolling part 70 have a fixed seat and a rolling element that rotates relative to the fixed seat.

[0030] Based on the above, the rolling element of the pressing rolling part 70 includes the following two embodiments:

[0031] Example 1, such as Figure 2 and Figure 3 As shown, the pressure rolling part 70 includes two side pressure rollers 73 that are rotatably fitted on the fixed seat and distributed on both sides of the cutter 30. The pressure rolling part 70 also includes an upper pressure roller 71 and a lower pressure roller 72 that are rotatably fitted on the fixed seat and distributed on both sides of the cutter 30 along the conveying direction of the film roll a. The rotation axes of the side pressure rollers 73, the upper pressure roller 71 and the lower pressure roller 72 are all parallel to the inner plate surface of the support plate 10 and perpendicular to the conveying direction of the film roll a.

[0032] In this embodiment, the rolling elements of the pressing rolling part 70 are composed of the side pressure roller 73, the upper pressure roller 71 and the lower pressure roller 72; the specific connection and installation of the pressure roller structure and the rotating fit of the fixed seat is a common connection method in the prior art, and will not be described in detail here.

[0033] The pressure roller structure is in the form of a rolling element that engages with the rolling part 70 and the film roll a. The long axis of the roller has a large contact area with the film roll a, which can effectively suppress the deformation of the film roll a in the puncture direction and significantly reduce the puncture stroke required by the cutter 30.

[0034] Example 2 (not shown in the accompanying drawings), the pressing rolling part 70 includes at least four freely rolling balls mounted on the fixed base, and at least one rolling ball is arranged on both sides of the blade surface of the cutter 30 and on both sides of the cutter 30 along the conveying direction of the film roll a.

[0035] In this embodiment, a ball bearing forms the rolling element that presses against the rolling part 70. Specifically, the installation method of the ball bearing and the fixed seat is the same as that of the universal joint, which is a common connection method in the prior art and will not be described in detail here.

[0036] In this embodiment, a rolling element is used to form a pressure rolling part 70 that rolls in conjunction with the film roll a. The contact area between the rolling ball and the film roll a is small, resulting in less effective deformation suppression of the film roll a compared to a pressure roller structure. However, it occupies less space, which is beneficial for miniaturization. In actual implementation, an appropriate implementation method can be selected according to actual needs.

[0037] Based on the above, such as Figure 1 As shown, a second guide rod 60, which slides in cooperation with the drive unit, is fixed on the fixed seat of the pressing rolling part 70 to achieve elastic sliding guidance of the pressing rolling part 70. The sliding direction of the second guide rod 60 is parallel to the movement direction of the drive unit, and a second return spring 61 is provided on the second guide rod 60 to elastically press the pressing rolling part 70 against the support plate 10. The installation method of the second return spring 61 is a common installation method in the prior art, which can apply the elastic force of the extrusion film roll a to the pressing rolling part 70. In actual implementation, the pressing rolling part 70 can also be fixed by connecting the fixed seat to the drive unit through a telescopic rod or by sliding cooperation between the fixed seat and the drive unit to ensure stable sliding of the pressing rolling part 70, and elastic elements such as springs or elastic sheets can be provided to apply the elastic force of the extrusion film roll a to the pressing rolling part 70.

[0038] Based on the above, such as Figure 1 and Figure 3 As shown, a baffle 20 is arranged on the outer surface of the support plate 10 to block the first through hole 11, preventing the cutter 30 from penetrating the first through hole 11 and causing the film roll a of the bag body to be scratched. Simultaneously, a first guide rod 21 is fixed on the baffle 20, slidingly engaging with the support plate 10. The sliding direction of the first guide rod 21 is parallel to the direction of the drive unit's movement. A first return spring 22 is provided on the first guide rod 21 to elastically drive the baffle 20 back to its original position against the outer surface of the support plate 10. This ensures that even if the cutter 30 penetrates the first through hole 11, the baffle 20 will slide outward synchronously with the cutter 30, preventing rigid contact between the cutter 30 and the baffle 20 and thus avoiding damage to the cutter 30. In actual implementation, the first return spring 22 is a common installation method in the prior art, sufficient to apply a spring force to drive the baffle 20 towards the support plate 10. This spring force does not need to be excessive; it only needs to ensure that the baffle 20 returns to its original position against the outer surface of the support plate 10. In this embodiment, even if the baffle 20 and the cutter 30 slide outwards simultaneously to contact the bag body of the packaging bag, the baffle 20 will cause only temporary elastic deformation of the bag body due to the separation of the baffle 20, and will not cause the cutter 30 to scratch the bag body.

[0039] Furthermore, such as Figure 1As shown, the drive unit is fixed with a push rod 50 that can push the baffle 20 away from the support plate 10. Along the piercing process direction of the drive unit, the front end of the push rod 50 is located in front of the front end of the cutter 30. In this embodiment, before the cutter 30 penetrates the first through hole 11, the push rod 50 first pushes the baffle 20 away from the support plate 10 along the forward direction of the cutter 30. At this time, even if the cutter 30 penetrates the first through hole 11, the cutter 30 will not collide with the baffle 20, further preventing damage to the cutter 30. Preferably, along the piercing process direction of the drive unit, the distance between the front end of the push rod 50 and the front end of the cutter 30 does not need to be too large; preferably, 1mm to 3mm is sufficient.

[0040] Based on the above, the support plate 10 has a U-shaped structure, with the inner sidewall of the horizontal section of the U-shaped structure forming the inner plate surface of the support plate 10. The driving part is a driving plate 41 that abuts against the vertical section of the U-shaped structure on both sides and slides with the vertical section, making the reciprocating motion of the driving part of the driving assembly 40 more stable. Specifically, the component of the driving assembly 40 that performs the reciprocating motion of the driving part can be any existing technology such as a cylinder, hydraulic cylinder, or screw-slider mechanism that can achieve linear reciprocating motion. In this embodiment, since the driving plate 41 is located inside the U-shaped structure of the support plate 10, a second through hole 12 is provided on the horizontal section of the support plate 10 to allow the push rod 50 to pass through.

[0041] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0043] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A cutting assembly for a tote bag, characterized in that, The device includes a support plate (10) that is in contact with the inner plate of the film roll (a) and a cutter (30) that is fixed on the drive part of the drive assembly (40) and moves reciprocally through the inner plate of the support plate (10). The support plate (10) is provided with a first through hole (11) to avoid the cutter (30) from piercing. The drive part of the drive assembly (40) is also elastically mounted with a pressing rolling part (70). When the drive part is piercing, the pressing rolling part (70) elastically presses against the outer edge of the first through hole (11) of the film roll (a) before the cutter (30) pierces the module film roll (a) and forms a rolling fit with the film roll (a) in the conveying state.

2. The cutting assembly for a tote bag according to claim 1, characterized in that, The pressure rolling part (70) includes two side pressure rollers (73) that are rotatably fitted on the fixed seat and distributed on both sides of the cutter (30). The pressure rolling part (70) also includes an upper pressure roller (71) and a lower pressure roller (72) that are rotatably fitted on the fixed seat and distributed on both sides of the cutter (30) along the conveying direction of the film roll (a). The rotation axes of the side pressure rollers (73), the upper pressure roller (71) and the lower pressure roller (72) are all parallel to the inner plate surface of the support plate (10) and perpendicular to the conveying direction of the film roll (a).

3. The cutting assembly for a tote bag according to claim 1, characterized in that, The pressure rolling part (70) includes at least four freely rolling balls mounted on the fixed base, and at least one rolling ball is arranged on both sides of the blade of the cutter (30) and on both sides of the cutter (30) along the conveying direction of the film roll (a).

4. A cutting assembly for a tote bag according to claim 1, 2, or 3, characterized in that, The fixed seat of the pressing rolling part (70) is fixed with a second guide slide rod (60) that slides in cooperation with the driving part. The sliding direction of the second guide slide rod (60) is parallel to the action direction of the driving part, and a second return spring (61) is provided on the second guide slide rod (60) to elastically press the pressing rolling part (70) towards the support plate (10).

5. A cutter assembly for a tote bag according to claim 1, 2, or 3, characterized in that, A baffle (20) capable of blocking the first through hole (11) is arranged on the outer plate surface of the support plate (10). A first guide slide rod (21) that slides with the support plate (10) is fixed on the baffle (20). The sliding direction of the first guide slide rod (21) is parallel to the action direction of the drive unit. A first return spring (22) that elastically drives the baffle (20) to return to its original position in the direction of adhering to the outer plate surface of the support plate (10) is provided on the first guide slide rod (21).

6. The cutting assembly for a tote bag according to claim 5, characterized in that, The drive unit is fixed with a push rod (50) that can push the baffle (20) away from the support plate (10). Along the direction of the piercing process of the drive unit, the front end of the push rod (50) is located in front of the front end of the cutter (30).

7. The cutting assembly for a tote bag according to claim 6, characterized in that, The support plate (10) has a U-shaped structure, and the inner sidewall of the horizontal section of the U-shaped structure forms the inner plate surface of the support plate (10). The driving part is a driving plate (41) that abuts against the vertical section of the U-shaped structure on both sides and slides with the vertical section. A second through hole (12) through which the push rod (50) passes is provided on the horizontal section of the support plate (10).

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