Cabinet door structure applied to roll film packaging equipment

Abstract

The utility model relates to the field of packaging machinery, in particular to a cabinet door structure applied to roll film packaging equipment, which comprises a cabinet body and a cabinet door, a mounting port penetrating to the inner wall of the cabinet body is arranged on the side wall of the cabinet body, and the cabinet door covers the mounting port. The hinge rod is provided with at least one hinge swing arm, the inner wall of the cabinet door is provided with hinge lugs, the number of the hinge lugs is equal to that of the hinge swing arms, and the hinge lugs are hinged to the swing ends of the hinge swing arms. Compared with the prior art, the unrolling device has higher structural strength, so that the unrolling device has higher bearing capacity, and the hinged part is not easy to deform and damage after being used for a long time, so that the positioning of the unrolling device by the cabinet door can be kept at high accuracy for a long time, and the use and maintenance cost of a user can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, in particular to a cabinet door structure applied to a roll film packaging device. Background Art

[0002] At present, for the convenience of storage and transportation, most packaging films are packaged in rolls. For this reason, on the existing roll film packaging devices, a unwinding device is provided for placing and unwinding the rolled packaging film. Among them, most of the existing unwinding devices are composed of an expansion shaft body and a driving mechanism (such as a driving cylinder or a driving motor) for driving the expansion and contraction of the expansion shaft body. Since most of the existing roll film packaging devices use a cabinet to install the unwinding device, the film changing assembly, the film pulling mechanism, the film folding mechanism, the edge sealing device, the filling device, the sealing device and the cutting device, etc. Therefore, when installing the unwinding device, the following installation structure is adopted: a cabinet door that can be opened and closed is provided on the side wall of the cabinet, the expansion shaft body is arranged on the outer wall of the cabinet door, the driving mechanism is arranged on the inner wall of the cabinet door, and the expansion shaft body is drivingly connected with the driving mechanism; among them, in order to save the film changing time, now most of the cabinet doors are provided with two sets of unwinding devices so as to place two rolls of packaging films at the same time; moreover, the film changing assembly is also arranged on the cabinet door.

[0003] Although the above assembly structure can facilitate the hidden maintenance of the unwinding device, since most of the existing cabinet doors are installed to be able to be opened and closed through ordinary hinges, the structural strength at the hinge of the cabinet door is very limited. The reason is as follows: the ordinary hinge is only composed of a fixed leaf, a movable leaf and a middle shaft, and both the fixed leaf and the movable leaf are made of thin steel sheets (the thickness is mostly below 1.5 mm), the middle shaft is a thin shaft (the diameter is mostly below 5 mm), and sleeve parts are respectively protruded and curled at the end parts of the fixed leaf and the movable leaf, and the sleeve parts of the fixed leaf and the movable leaf are both sleeved on the thin shaft. Therefore, the strength of the hinge applied to the cabinet door is very limited. Since two sets of unwinding devices need to be arranged on the cabinet door, two rolls of packaging films need to be respectively placed on the two sets of unwinding devices, and a film changing assembly needs to be arranged on the cabinet door, the cabinet door will be subjected to a great gravity during use. This will easily cause the hinge to be deformed and damaged after being used for a period of time. This will not only reduce the positioning accuracy of the cabinet door for the unwinding device, but also increase the use and maintenance cost of users.

[0004] Therefore, it is very necessary to design a cabinet door structure applied to a roll film packaging device to solve the above technical problems. Content of the Utility Model

[0005] The object of the present utility model is to solve the above problems and deficiencies, and provide a cabinet door structure applied to a film winding packaging device. This cabinet door structure can have higher structural strength, so as to have greater load-bearing capacity. During long-term use, the hinge joints are not prone to deformation and damage, which not only helps to keep the positioning of the unwinding device by the cabinet door highly accurate for a long time, but also helps to reduce the user's use and maintenance costs.

[0006] The technical solution of the present utility model is realized as follows:

[0007] A cabinet door structure applied to a film winding packaging device, including a cabinet body and a cabinet door. An installation opening penetrating through to its inner wall is provided on the side wall of the cabinet body, and the cabinet door covers the installation opening. Its feature is that a hinge rod is arranged in the cabinet body, at least one hinge swing arm is arranged on the hinge rod, and hinge lugs equal in number to the hinge swing arms are arranged on the inner wall of the cabinet door, and the hinge lugs are hinged to the swing ends of the hinge swing arms.

[0008] Preferably, positioning disks that can rotate relative to each other are sleeved on both ends of the hinge rod, and the two positioning disks are respectively fixedly arranged on the upper and lower inner walls of the cabinet body.

[0009] Preferably, reinforcing rods are respectively arranged on the upper and lower inner walls of the cabinet body, and the two positioning disks are respectively fixedly connected to the two reinforcing rods.

[0010] Preferably, it further includes a hinge shaft. There are two hinge swing arms and two hinge lugs, and the two hinge lugs are respectively hinged to the swing ends of the two hinge swing arms through both ends of the hinge shaft.

[0011] Preferably, a first biting notch is provided at the swing end of the hinge swing arm, a second biting notch is provided on the hinge lug, and the second biting notch and the first biting notch are bite together rotatably relative to each other.

[0012] Preferably, the hinge lug includes a fixing plate and two hinge plates. The two hinge plates are arranged in parallel in the middle of the fixing plate, the second biting notch is formed between the two hinge plates, and the fixing plate is fixed on the inner wall of the cabinet door.

[0013] Preferably, the hinge swing arm includes a connecting arm and a swing arm. One end of the swing arm is connected to one end of the connecting arm, and the swing arm and the connecting arm are perpendicular to each other. The other end of the connecting arm is connected to the hinge rod, and the other end of the swing arm is hinged to the hinge lug.

[0014] Preferably, a clamping groove is provided at the end of the hinge swing arm, a detachable clamping block is arranged at the notch of the clamping groove, and the hinge swing arm is sleeved on the hinge rod through the clamping groove and the clamping block.

[0015] Preferably, the transverse two ends of the front wall of the cabinet body are respectively a concave surface part and a convex surface part, and the installation opening is arranged on the concave surface part.

[0016] Preferably, at least one perforation is respectively arranged at the four corners of the cabinet door, and threaded holes are respectively arranged on the cabinet body behind each perforation.

[0017] The beneficial effects of the present utility model: In this cabinet door structure, positioning can be achieved through the hinge rod, and the opening and closing of the cabinet door can be achieved through the hinge swing arm and the hinge lug. Such a structure can play a very stable and reliable positioning role for the cabinet door, which is beneficial to making the cabinet door structure have higher structural strength, so as to have greater bearing capacity. During long-term use, the hinge joints are not prone to deformation and damage. This not only helps to keep the positioning of the cabinet door for the unwinding device highly stable and accurate for a long time, but also helps to reduce the use and maintenance costs of users. Description of the Drawings

[0018] Figure 1 It is a schematic structural view of the closed state of the cabinet door of the present utility model.

[0019] Figure 2 It is one of the schematic structural views of the opened state of the cabinet door of the present utility model.

[0020] Figure 3 It is another schematic structural view of the opened state of the cabinet door of the present utility model.

[0021] Figure 4 It is a schematic structural view of the hinged state of the cabinet door and the hinge rod in the present utility model.

[0022] Figure 5 It is a schematic structural view of the hinged state of the hinge swing arm and the hinge lug in the present utility model.

[0023] Figure 6 It is a schematic structural view of the separated state of the hinge swing arm and the hinge lug in the present utility model.

[0024] Figure 7 It is a schematic structural view of the hinge swing arm in the present utility model.

[0025] Figure 8 It is a schematic structural view of the hinge lug in the present utility model. Detailed Embodiments

[0026] Such as Figures 1 to 3As shown in the figure, a cabinet door structure applied to a film winding packaging device according to the present utility model includes a cabinet body 1 and a cabinet door 2. An installation opening 11 penetrating through the inner wall is provided on the side wall of the cabinet body 1, and the cabinet door 2 covers the installation opening 11. To achieve the invention purpose of the present utility model, a hinge rod 3 is arranged inside the cabinet body 1, at least one hinge swing arm 4 is arranged on the hinge rod 3, and hinge lug ears 5 equal in number to the hinge swing arms 4 are arranged on the inner wall of the cabinet door 2, and the hinge lug ears 5 are hinged to the swing ends of the hinge swing arms 4.

[0027] On this cabinet door structure, positioning can be achieved through the hinge rod 3, and the opening and closing of the cabinet door 2 can be achieved through the cooperation of the hinge swing arms 4 and the hinge lug ears 5. Such a structure can play a very stable and reliable positioning role for the cabinet door 2, which is beneficial to making the cabinet door structure have higher structural strength, so as to have greater bearing capacity. During long-term use, the hinge joints are not prone to deformation and damage. This not only helps to keep the positioning of the unwinding device by the cabinet door highly stable and accurate for a long time, but also helps to reduce the user's use and maintenance costs.

[0028] Moreover, after adopting the above structure, the whole cabinet door 2 can be translated obliquely outwards from the installation opening 11 and then flipped open. This can avoid the structure protruding from the rear side of the cabinet door 2 touching the installation opening 11 when the driving mechanism or other components (such as a driving motor or a clutch) on the rear wall of the cabinet door 2 protrude too much from the rear wall of the cabinet door 2. Such a structure can meet the normal opening and closing requirements when the installation opening 11 and the cabinet door 2 adopt small sizes and when the components on the rear side of the cabinet door 2 protrude too much. It has less space requirements and is very convenient to open and close. The applicability of this cabinet door structure is very strong.

[0029] When the opening and closing of the cabinet door 2 are realized by adopting the above structure, the internal space of the cabinet body 1 can provide a very sufficient installation space for relevant hinge components, which is beneficial to adopting large-sized hinge rods 3, hinge swing arms 4 and hinge lug ears 5, so as to ensure very strong structural strength and bearing capacity. Such a structure has very high reliability and applicability.

[0030] By adopting the cooperation of the hinge lug ears 5 and the hinge swing arms 4, even if the hinge rod 3 is arranged inside the cabinet body 1, the opening and closing requirements of the cabinet door 2 can be well met, so as to meet the actual use requirements.

[0031] In the actual manufacturing process, the following three structures can be specifically adopted to achieve the opening and closing of the cabinet door: First, the hinge rod 3 is rotatably arranged in the cabinet body 1, and the hinge swing arm 4 is fixedly arranged on the hinge rod 3; Second, the hinge rod 3 is fixedly arranged in the cabinet body 1, and the hinge swing arm 4 is swingably connected to the hinge rod 3; Third, the hinge rod 3 is rotatably arranged in the cabinet body 1, and the hinge swing arm 4 is swingably connected to the hinge rod 3. In this way, the normal opening and closing requirements of the cabinet door 2 can be met.

[0032] The diameter of the hinge rod 3 is more than 25 mm. Even the minimum diameter of the stepped shaft-shaped hinge rod 3 is more than 25 mm. The widths of the hinge swing arm 4 and the hinge lug 5 are both greater than the diameter of the hinge rod 3. The hinge rod 3, the hinge swing arm 4, and the hinge lug 5 are all made of steel structure. In this way, it can be ensured that the hinge rod 3 has high structural strength, and thus the cabinet door structure can have high structural strength and load-bearing capacity.

[0033] As Figures 2 to 4 shown, positioning disks 6 that can rotate relative to each other are sleeved on both ends of the hinge rod 3 respectively, and the two positioning disks 6 are fixedly arranged on the upper and lower inner walls of the cabinet body 1 respectively. This can improve the convenience, accuracy, and stability of the installation and positioning of the hinge rod 3, and thus can further improve the reliability of the cabinet door structure.

[0034] As Figure 2 shown, reinforcing bars 12 are respectively arranged on the upper and lower inner walls of the cabinet body 1, and the two positioning disks 6 are fixedly connected to the two reinforcing bars 12 respectively. The reinforcing bars 12 can provide a reliable installation place for the positioning disks 6, so as to facilitate improving the stability and reliability of the installation and positioning of the positioning disks 6, and further contribute to improving the reliability of the cabinet door structure.

[0035] In the actual manufacturing process, the positioning disk 6 can be fixed on the reinforcing bar 12 through a number of screws, so as to meet the requirements of stable installation.

[0036] As Figure 3 shown, in the actual manufacturing process, in order to make the inner wall of the cabinet body 1 relatively flat, the reinforcing bar 12 can be covered with an inner plate 13. When fixing the positioning disk 6, the threaded end of the screw passes through the positioning disk 6 and the inner plate 13 in sequence and then is screwed onto the reinforcing bar 12. In this way, the requirement of stably positioning the hinge rod 3 can also be met.

[0037] As Figures 2 to 4As shown, the cabinet door structure further includes a hinge shaft 7. There are two hinge swing arms 4 and two hinge lugs 5. The two hinge lugs 5 are respectively hinged to the swing ends of the two hinge swing arms 4 through the two ends of the hinge shaft 7. Using the same hinge shaft 7 to hinge the two hinge lugs 5 and the two hinge swing arms 4 can not only meet the hinge requirements, but also utilize the hinge shaft 7 to strengthen the hinge, so that the hinge has higher stability and reliability. Using two hinge lugs 5 and two hinge swing arms 4 can control the manufacturing cost and difficulty while ensuring high reliability of the hinge, which helps to further improve the applicability of the cabinet door structure.

[0038] As Figures 2 to 4 shown, the two hinge swing arms 4 are arranged side by side vertically on the hinge rod 3, and the two hinge lugs 5 are arranged side by side vertically on the inner wall of the cabinet door 2. The hinge shaft 7 is arranged vertically. In this way, the cabinet door 2 can be opened by horizontal flipping, thus very well meeting the actual use requirements.

[0039] As Figures 4 to 6 shown, the hinge shaft 7 is a stepped shaft with smaller diameters at both ends and a larger diameter in the middle. The upper hinge swing arm 4 and the hinge lug 5 are sleeved on the small shaft part 71 at the upper end of the hinge shaft 7, and the lower hinge swing arm 4 and the hinge lug 5 are sleeved on the small shaft part 71 at the lower end of the hinge shaft 7. The stepped end faces at both ends of the hinge shaft 7 respectively abut against the corresponding hinge swing arm 4 or hinge lug 5, so as to accurately position the hinge shaft 7, the hinge swing arm 4 and the hinge lug 5. The diameters at both ends of the hinge shaft 7 can be more than 10 mm, and the diameter in the middle of the hinge shaft 7 can be more than 15 mm. This is conducive to achieving a more stable and reliable hinge effect.

[0040] In the actual manufacturing process, the following sleeving method can be adopted for the hinge swing arm 4 and the hinge lug 5 to connect with the small shaft part 71: The hinge lug 5 is rotatably sleeved on the small shaft part 71, the swing end of the hinge swing arm 4 is sleeved on the small shaft part 71, and at least one set screw (not shown in the figure) is screwed on the swing end of the hinge swing arm 4 and presses tightly on the small shaft part 71, so that the hinge swing arm 4 and the hinge lug 5 can be hinged together through the small shaft part 71.

[0041] As Figure 5 And Figure 6 shown, a first engagement notch 41 is formed on the swing end of the hinge swing arm 4, and a second engagement notch 51 is formed on the hinge lug 5. The second engagement notch 51 and the first engagement notch 41 are engaged with each other rotatably. This can make the hinge lug 5 and the hinge swing arm 4 more accurately and stably achieve hinge, thus helping to further improve the reliability of the cabinet door structure.

[0042] As Figure 4 AndFigure 7 As shown, the articulated lug 5 includes a fixing plate 52 and two articulated plates 53. The two articulated plates 53 are arranged parallel to each other on the middle part of the fixing plate 52. The second engaging notch 51 is formed between the two articulated plates 53. The fixing plate 52 is fixed on the inner wall of the cabinet door 2. Such an articulated lug 5 is very simple and reliable, which not only facilitates manufacturing but also ensures high reliability at the articulated part.

[0043] Both ends of the fixing plate 52 are respectively fixed on the inner wall of the cabinet door 2 by at least two screws (not shown in the figure), so as to meet the requirement of stably installing the fixing plate 52.

[0044] As Figure 4 and Figure 7 shown, the articulated swing arm 4 includes a connecting arm 42 and a swing arm 43. One end of the swing arm 43 is connected to one end of the connecting arm 42, making the swing arm 43 perpendicular to the connecting arm 42. The other end of the connecting arm 42 is connected to the articulated rod 3, and the other end of the swing arm 43 is articulated with the articulated lug 5. Such an articulated swing arm 4 is very simple and reliable, which not only facilitates manufacturing but also is conducive to achieving accurate and stable articulation effects, so that the opening and closing of the cabinet door 2 can be very accurate and stable, and further helps to improve the reliability and applicability of the cabinet door structure.

[0045] As Figures 5 to 8 shown, the first engaging notch 41 is horizontally formed through the other end of the swing arm 43. The two articulated plates 53 are arranged side by side vertically. The upper articulated plate 53 is placed in the first engaging notch 41, and the lower articulated plate 53 is placed below the other end of the swing arm 43. The small shaft portion 71 passes through the first engaging notch 41 and the two articulated plates 53, enabling the two articulated plates 53 to rotate relative to the small shaft portion 71, and also locking the other end of the swing arm 43 on the small shaft portion 71 by a set screw (not shown in the figure) screwed thereon. In this way, the second engaging notch 51 and the first engaging notch 41 can be engaged with each other rotatably, and stable articulated connection can be achieved, thus ensuring high stability and reliability at the articulated part.

[0046] As Figure 6 shown, a copper sleeve 431 is embedded in the bottom of the hole on the other end of the swing arm 43 for the small shaft portion 71 to be embedded. When using the copper sleeve 431, the small shaft portion 71 can be rotatably embedded in the copper sleeve 431, and the set screw is turned to tighten the copper sleeve 431, which can achieve the purpose of reducing wear and noise. When the first engaging notch 41 is formed on the swing arm 43 and the first engaging notch 41 is formed through the penetrating position of the small shaft portion 71, copper sleeves 431 are embedded in the holes above and below the first engaging notch 41 for the small shaft portion 71 to be rotatably embedded, which can ensure very good performance.

[0047] As shown Figure 4 in Figure 7 Figure [not shown], a clamping groove 44 is formed at the end of the articulated swing arm 4, and a detachable clamping block 45 is arranged at the notch of the clamping groove 44. The articulated swing arm 4 is sleeved on the articulated rod 3 through the clamping groove 44 and the clamping block 45. This can not only make the connection between the articulated swing arm 4 and the articulated rod 3 have very high stability, but also can disassemble and maintain the articulated swing arm 4 and the cabinet door 2 separately without disassembling the articulated rod 3, which helps to further improve the reliability and applicability of the cabinet door structure.

[0048] Both ends of the clamping block 45 are respectively fixed on the articulated swing arm 4 by at least one screw (not shown in the figure). This can not only meet the requirement of stable clamping, but also meet the disassembly requirement, so that the articulated swing arm 4 and the cabinet door 2 can be disassembled and maintained separately without disassembling the articulated rod 3, thus improving the convenience of disassembly and maintenance.

[0049] As shown Figures 1 to 3 in Figure [not shown], the transverse two ends of the front wall of the cabinet body 1 are respectively a concave surface part 14 and a convex surface part 15, and the installation opening 11 is formed on the concave surface part 14. This can make the cabinet door 2 lean backward, so that the unwinding device (not shown in the figure), the film changing assembly (not shown in the figure) can lean backward, and the film pulling mechanism (not shown in the figure) can be arranged directly above the film changing assembly. In addition, the input ends of the film folding mechanism (not shown in the figure), the edge sealing device (not shown in the figure), and the filling device (not shown in the figure) can be arranged on the top surface of the front end of the cabinet body 1 protruding from the concave surface part 14, so as to facilitate keeping the front and rear positions of the input ends of the unwinding device, the film changing assembly, the film pulling mechanism, the film folding mechanism, the edge sealing device, and the filling device in the same position, and further facilitate the smooth conveying of the packaging film and avoid the packaging film from bending in the vertical direction of its conveying direction.

[0050] In the actual manufacturing process, the unwinding device, the film changing assembly, the film pulling mechanism, the film folding mechanism, the edge sealing device and the filling device can adopt those designed by the applicant (reference can be made to the relevant patents applied by the applicant), or other existing ones can also be adopted, so as to meet the requirements of actual manufacturing and use.

[0051] As shown Figure 2 in Figure [not shown], a handle 21 is arranged on the outer wall of the cabinet door 2, which can facilitate the opening and closing operations of the cabinet door 2, thus improving the convenience of use.

[0052] As shown Figure 1 in Figure 2As shown, at least one perforation 22 is respectively formed at four corners of the cabinet door 2, and threaded holes 16 are respectively formed on the cabinet body 1 at the rear sides of the perforations 22. This can facilitate the stable locking of the cabinet door 2 on the cabinet body 1 by screws, thereby further improving the reliability of the cabinet door structure.

[0053] In addition to locking the cabinet door 2 by screws, a lock can also be used to limit the cabinet door 2 on the cabinet body 1, which can also well meet the actual manufacturing and use requirements.

[0054] As Figure 2 shown, a reinforcing cylinder 17 is embedded on the cabinet body 1, and the inner hole of the reinforcing cylinder 17 forms the threaded hole 16. This can ensure that the opening of the threaded hole 16 has high structural strength, thereby facilitating the screws to achieve a more stable and reliable locking effect.

[0055] As Figure 4 shown, first mounting holes 23 arranged side by side left and right are formed on the cabinet door 2, the first mounting holes 23 penetrate through the cabinet door 2, and the first mounting holes 23 are for installing a unwinding device (not shown in the figure). The structure of the unwinding device and its assembling structure with the cabinet door 2 directly adopt the existing structure; second mounting holes 24 are formed at the upper end of the cabinet door 2, the second mounting holes 24 penetrate through the cabinet door 2, and the second mounting holes 24 are for installing a film changing assembly (not shown in the figure). The structure of the film changing assembly and its assembling structure with the cabinet door 2 directly adopt the existing structure. This can meet the actual manufacturing and use requirements.

[0056] The above embodiments are the preferred embodiments of the present invention. All structures similar to the present invention and equivalent changes made shall fall within the protection scope of the present invention.

Claims

1. A cabinet door structure used in a roll film packaging device, comprising a cabinet body (1) and a cabinet door (2), wherein a mounting opening (11) penetrating to an inner wall of the cabinet body (1) is provided on a side wall thereof, and the cabinet door (2) covers the mounting opening (11), wherein: A hinged rod (3) is arranged in the cabinet body (1), and at least one hinged swing arm (4) is arranged on the hinged rod (3). The inner wall of the cabinet door (2) is provided with hinged lugs (5) equal in number to the hinged swing arms (4), and the hinged lugs (5) are hingedly connected to the swinging ends of the hinged swing arms (4).

2. The cabinet door structure used in the roll film packaging equipment according to claim 1, characterized in that: The two ends of the hinged rod (3) are respectively provided with positioning plates (6) which can rotate relatively to each other, and the two positioning plates (6) are respectively fixedly arranged on the upper and lower inner walls of the cabinet (1).

3. The cabinet door structure used in the roll film packaging equipment according to claim 2, characterized in that: Reinforcement rods (12) are respectively provided on the upper and lower inner walls of the cabinet (1), and the two positioning plates (6) are respectively fixedly connected to the two reinforcement rods (12).

4. The cabinet door structure used in the roll film packaging equipment according to claim 1, characterized in that: It also includes an articulated shaft (7), two articulated swing arms (4), and two articulated lugs (5), and the two articulated lugs (5) are respectively articulated to the swing ends of the two articulated swing arms (4) through the two ends of the articulated shaft (7).

5. The cabinet door structure used in roll film packaging equipment according to claim 1, characterized in that: A first bite notch (41) is provided on the swing end of the hinged swing arm (4), and a second bite notch (51) is provided on the hinged lug (5). The second bite notch (51) and the first bite notch (41) can be relatively rotatably engaged with each other.

6. The cabinet door structure used in the roll film packaging equipment according to claim 5, characterized in that: The hinged lug (5) comprises a fixed plate (52) and two hinged plates (53), the two hinged plates (53) being arranged parallel to each other at the middle of the fixed plate (52), the second engagement notch (51) being formed between the two hinged plates (53), and the fixed plate (52) being fixed to the inner wall of the cabinet door (2).

7. The cabinet door structure used in roll film packaging equipment according to claim 1, characterized in that: The hinged swing arm (4) comprises a connecting arm (42) and a swing arm (43); one end of the swing arm (43) is connected to one end of the connecting arm (42), and the swing arm (43) and the connecting arm (42) are perpendicular to each other; the other end of the connecting arm (42) is connected to the hinge rod (3); and the other end of the swing arm (43) is hinged to the hinge lug (5).

8. The cabinet door structure used in roll film packaging equipment according to claim 1, characterized in that: A clamping slot (44) is provided at the end of the hinged swing arm (4), a detachable clamping block (45) is provided at the notch of the clamping slot (44), and the hinged swing arm (4) is clamped onto the hinged rod (3) via the clamping slot (44) and the clamping block (45).

9. The cabinet door structure used in roll film packaging equipment according to claim 1, characterized in that: The two transverse ends of the front wall of the cabinet (1) are respectively a concave portion (14) and a convex portion (15), and the mounting opening (11) is provided on the concave portion (14).

10. The cabinet door structure used in roll film packaging equipment according to claim 1, characterized in that: At least one through hole (22) is respectively formed on the four corners of the cabinet door (2), and a threaded hole (16) is respectively formed on the cabinet body (1) behind each through hole (22).

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