Film inlet closing and clamping device

Abstract

The utility model relates to the technical field of film processing, in particular to a film inlet closing and clamping device which comprises an air cylinder, a first connecting seat is arranged at the output end of the air cylinder, a damper is arranged on the first connecting seat, an installation plate is fixedly connected to the end, away from the first connecting seat, of the damper, and a buffering mechanism is fixedly installed on the installation plate. A connecting mechanism is fixedly installed at the bottom of the buffering mechanism. Compared with the prior art, the film inlet clip closing device has the advantages that by arranging the buffering mechanism, the connecting mechanism and the self-adaption mechanism, when adjacent chain clip handles are switched to be in contact with the rotary disc in the moving process to cause the rotary disc to shake, it is ensured that the rotary disc can be kept in the range capable of being in contact with the chain clip handles, and therefore the film inlet clip closing device is more stable. The situation that the chain clamp is not closed due to the fact that the rotating disc has large deviation on the limited position of the chain clamp handle is avoided, and therefore the situation that a film is broken due to uneven stress in the follow-up transverse downward stretching process is avoided, and the quality of the film stretching out in the transverse downward stretching process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of film processing, in particular to a film inlet clamp closer. Background Art

[0002] Biaxially oriented polypropylene film is generally a multi-layer co-extruded film, which is made by co-extruding polypropylene particles into sheets and then stretching them in both the longitudinal and transverse directions. The wide application of polypropylene film, low pollution and protection of forest natural resources make it a more popular packaging material than paper and polyvinyl chloride; the simple and reliable manufacturing process and reasonable price make it a more commonly used packaging material than biaxially oriented polyester film and biaxially oriented nylon film.

[0003] When producing and processing films, it is usually necessary to use a stretching machine to stretch the film transversely and longitudinally to make the film have a uniform thickness. When the film is stretched transversely, a transverse stretching device is required. The clamp closer is generally set at the entrance of the transverse stretching device.

[0004] A clamping device for an entrance of a transverse stretching machine for film production disclosed in Chinese patent CN211917699U includes a bracket, a bottom plate is fixedly mounted on the upper part of the bracket; a cylinder fixing frame is mounted on the left upper part of the bottom plate, a cylinder is fixedly mounted on the upper part of the cylinder fixing frame; a linear slider assembly is fixedly mounted on the right upper part of the bottom plate; a movable frame weldment assembly is arranged on the upper part of the linear slider assembly; a damper is arranged on the outside of the cylinder connecting rod on the right side of the cylinder; a shaft is mounted on the right end of the movable frame weldment assembly, a turntable frame is mounted on the lower end of the shaft, and a turntable is fixedly mounted on the turntable frame by means of studs.

[0005] However, compared with the prior art and the comparative scheme, it can be seen that the inlet clamp closer of the transverse stretching machine for film production still has the following problems in actual use:

[0006] When the turntable contacts the chain clamp handle during the movement of the chain clamp, the chain clamp handle needs to reach the required position to achieve the purpose of closing the clamp. However, due to the gap between the chain clamps, when the adjacent chain clamp handles switch to contact the turntable during the movement, the turntable will cause vertical shaking. When the shaking range is large, the turntable and the chain clamp handle will no longer contact, which will cause the turntable to deviate from the position specified by the chain clamp handle. Once a chain clamp is not closed, it is very likely to cause film breakage due to uneven force during the subsequent lateral stretching process.

[0007] Therefore, the present application proposes a film inlet clamp closer to solve the above problems. Utility Model Content

[0008] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0009] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a film inlet clamp closer.

[0010] The purpose of the utility model is achieved through the following technical solutions: a film inlet clamp closer, comprising a cylinder, a first connecting seat is arranged at the output end of the cylinder, a damper is arranged on the first connecting seat, a mounting plate is fixedly connected to one end of the damper away from the first connecting seat, a buffer mechanism is fixedly installed on the mounting plate, a connecting mechanism is fixedly installed at the bottom of the buffer mechanism, an adaptive mechanism is fixedly installed inside the connecting mechanism, and a trigger mechanism is arranged at the bottom of the adaptive mechanism;

[0011] The buffer mechanism comprises a connecting frame, the connecting frame is fixedly mounted on the mounting plate, the bottom of the connecting frame is rotatably connected to a first connecting ring, the interior of the first connecting ring is rotatably connected to a connecting plate, and a first elastic member is arranged between the connecting plate and the connecting frame;

[0012] The connecting mechanism comprises a second connecting seat, a connecting groove is formed at the bottom of the second connecting seat, and a conical groove is formed inside the second connecting seat;

[0013] The adaptive mechanism includes a second connecting ring, a second elastic member is arranged inside the second connecting ring, a connecting block is fixedly connected to one end of the second elastic member away from the second connecting ring, a connecting cone is arranged on the top of the connecting block, and a connecting port is opened at the bottom of the connecting block.

[0014] Preferably, the trigger mechanism includes a connecting shaft, one end of which is fixedly connected to a connecting head, the connecting head is threadedly connected to the bottom of the connecting block through a connecting port, a bearing is provided at one end of the connecting shaft away from the connecting head, and the connecting shaft is rotatably connected to a turntable through the bearing.

[0015] Preferably, the axis of rotation of the first connecting ring and the connecting frame is perpendicular to the axis of rotation of the connecting plate and the first connecting ring.

[0016] Preferably, the second connecting seat is fixedly mounted on the bottom of the connecting plate.

[0017] Preferably, the second connecting ring is fixedly installed inside the connecting groove.

[0018] Preferably, the connecting cone is located inside the conical groove, and the angle of the top angle of the conical groove is greater than the angle of the top angle of the connecting cone.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The film entrance clamp closer is provided with a buffer mechanism, a connecting mechanism and an adaptive mechanism. When the adjacent chain clamp handles switch to contact with the turntable during movement, causing the turntable to shake, it ensures that the turntable can remain within the range of contact with the chain clamp handles, thereby avoiding a large deviation of the position of the turntable relative to the chain clamp handle, resulting in the chain clamp not being closed tightly, thereby avoiding the film from being broken due to uneven force during the subsequent horizontal downward stretching process, thereby ensuring the quality of the film stretched horizontally.

[0021] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of the buffer mechanism of the utility model;

[0025] Figure 4 It is a cross-sectional structural schematic diagram of the connection mechanism of the utility model;

[0026] Figure 5 This is a structural schematic diagram of the adaptive mechanism of the utility model from the first perspective;

[0027] Figure 6 This is a structural schematic diagram of the second viewing angle of the adaptive mechanism of the utility model;

[0028] Figure 7 It is a schematic cross-sectional structural diagram of the trigger mechanism of the utility model.

[0029] In the figure: 1. cylinder; 2. first connecting seat; 3. damper; 4. buffer mechanism; 401. connecting frame; 402. first connecting ring; 403. connecting plate; 404. first elastic member; 5. connecting mechanism; 501. second connecting seat; 502. connecting groove; 503. conical groove; 6. adaptive mechanism; 601. second connecting ring; 602. second elastic member; 603. connecting block; 604. connecting cone; 605. connecting port; 7. trigger mechanism; 701. connecting shaft; 702. connector; 703. bearing; 704. turntable. DETAILED DESCRIPTION

[0030] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] Additional aspects and advantages of the present invention will be further described below in conjunction with the accompanying drawings, and some will become apparent from the following description or be learned through practice of the present invention.

[0033] like Figure 1 and Figure 2 As shown, a film inlet clamp closer comprises a cylinder 1, a first connecting seat 2 is arranged at the output end of the cylinder 1, a damper 3 is arranged on the first connecting seat 2, a mounting plate is fixedly connected to the end of the damper 3 away from the first connecting seat 2, a buffer mechanism 4 is fixedly installed on the mounting plate by bolts, a connecting mechanism 5 is fixedly installed at the bottom of the buffer mechanism 4 by bolts, an adaptive mechanism 6 is fixedly installed inside the connecting mechanism 5 by bolts, and a trigger mechanism 7 is arranged at the bottom of the adaptive mechanism 6;

[0034] like Figure 2 and Figure 3As shown, the buffer mechanism 4 includes a connecting frame 401, a first connecting ring 402, a connecting plate 403 and a first elastic member 404. The connecting frame 401 is fixedly mounted on the mounting plate by bolts. The bottom of the connecting frame 401 is rotatably connected to the first connecting ring 402. The inside of the first connecting ring 402 is rotatably connected to the connecting plate 403. The axis of rotation of the first connecting ring 402 and the connecting frame 401 is perpendicular to the axis of rotation of the connecting plate 403 and the first connecting ring 402. The first elastic member 404 is arranged between the connecting plate 403 and the connecting frame 401.

[0035] like Figure 2 and Figure 4 As shown, the connecting mechanism 5 includes a second connecting seat 501, a connecting groove 502 and a tapered groove 503. The second connecting seat 501 is fixedly mounted on the bottom of the connecting plate 403 by bolts. The connecting groove 502 is provided at the bottom of the second connecting seat 501. The tapered groove 503 is provided inside the second connecting seat 501. The tapered groove 503 is located at the top of the connecting groove 502.

[0036] like Figure 2 , Figure 5 and Figure 6 As shown, the adaptive mechanism 6 includes a second connecting ring 601, a second elastic member 602, a connecting block 603, a connecting cone 604 and a connecting port 605. The second connecting ring 601 is fixedly installed inside the connecting groove 502 by bolts. The second connecting ring 601 is provided with a second elastic member 602 inside. The end of the second elastic member 602 away from the second connecting ring 601 is fixedly connected with the connecting block 603. The top of the connecting block 603 is provided with a connecting cone 604. The connecting cone 604 is located inside the conical groove 503. The angle of the top angle of the conical groove 503 is greater than the angle of the top angle of the connecting cone 604. The bottom of the connecting block 603 is provided with a connecting port 605.

[0037] like Figure 2 and Figure 7 As shown, the trigger mechanism 7 includes a connecting shaft 701, a connecting head 702, a bearing 703 and a turntable 704. One end of the connecting shaft 701 is fixedly connected to the connecting head 702, and the connecting head 702 is threadedly connected to the bottom of the connecting block 603 through a connecting port 605. A bearing 703 is provided at one end of the connecting shaft 701 away from the connecting head 702, and the connecting shaft 701 is rotatably connected to the turntable 704 through the bearing 703.

[0038] The working process of the utility model is as follows:

[0039] S1. When in use, the cylinder 1 is started, the cylinder 1 drives the damper 3 through the first connecting seat 2, the damper drives the connecting mechanism 5 through the buffer mechanism 4, and the connecting mechanism 5 drives the trigger mechanism 7 to move through the adaptive mechanism 6;

[0040] S2. When the rotating disk 704 contacts the chain clamp handle during the movement of the chain clamp, the chain clamp handle on the chain clamp passing through the rotating disk 704 drives the chain clamp to close under the pressure of the rotating disk 704;

[0041] S3, when the adjacent chain clamp handle switches to contact with the rotating disk 704 during the movement, causing the rotating disk 704 to vibrate, the first elastic member 404 buffers the vibration generated by the rotating disk 704;

[0042] S4. During the shaking of the rotating disk 704, the connecting cone 604 slides in the conical groove 503, so that the connecting cone 604 drives the connecting block 603 to move downward;

[0043] S5. Then the connecting block 603 drives the connecting shaft 701 through the connecting head 702, and the connecting shaft 701 drives the turntable 704 to move downward through the bearing 703, ensuring that the turntable 704 can be kept within the range of contact with the chain clamp handle, avoiding a large deviation of the turntable 704 from the position defined by the chain clamp handle, resulting in the chain clamp not being closed tightly, thereby avoiding the film from being broken due to uneven force during the subsequent horizontal downward stretching process, thereby ensuring the quality of the film stretched horizontally.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] The film entrance clamp closer is provided with a buffer mechanism 4, a connecting mechanism 5 and an adaptive mechanism 6. When the adjacent chain clamp handles switch to contact with the turntable 704 during movement, causing the turntable 704 to shake, it ensures that the turntable 704 can remain within the range of contact with the chain clamp handles, avoiding a large deviation of the turntable 704 from the position defined by the chain clamp handle, resulting in the chain clamp not being closed tightly, thereby avoiding the film from being broken due to uneven force during the subsequent horizontal downward stretching process, thereby ensuring the quality of the film stretched horizontally.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A film inlet clamp closer, characterized in that: The invention comprises a cylinder (1), wherein a first connecting seat (2) is provided at the output end of the cylinder (1), a damper (3) is provided on the first connecting seat (2), an end of the damper (3) away from the first connecting seat (2) is fixedly connected to a mounting plate, a buffer mechanism (4) is fixedly mounted on the mounting plate, a connecting mechanism (5) is fixedly mounted at the bottom of the buffer mechanism (4), an adaptive mechanism (6) is fixedly mounted inside the connecting mechanism (5), and a trigger mechanism (7) is provided at the bottom of the adaptive mechanism (6); The buffer mechanism (4) comprises a connecting frame (401), the connecting frame (401) is fixedly mounted on the mounting plate, the bottom of the connecting frame (401) is rotatably connected to a first connecting ring (402), the interior of the first connecting ring (402) is rotatably connected to a connecting plate (403), and a first elastic member (404) is provided between the connecting plate (403) and the connecting frame (401); The connecting mechanism (5) comprises a second connecting seat (501), a connecting groove (502) is provided at the bottom of the second connecting seat (501), and a conical groove (503) is provided inside the second connecting seat (501); The adaptive mechanism (6) comprises a second connecting ring (601), a second elastic member (602) is arranged inside the second connecting ring (601), an end of the second elastic member (602) away from the second connecting ring (601) is fixedly connected to a connecting block (603), a connecting cone (604) is arranged on the top of the connecting block (603), and a connecting port (605) is opened at the bottom of the connecting block (603).

2. A film inlet clamp closer according to claim 1, characterized in that: The trigger mechanism (7) comprises a connecting shaft (701), one end of the connecting shaft (701) is fixedly connected to a connecting head (702), the connecting head (702) is threadedly connected to the bottom of the connecting block (603) through the connecting port (605), a bearing (703) is provided at one end of the connecting shaft (701) away from the connecting head (702), and the connecting shaft (701) is rotatably connected to a rotating disk (704) through the bearing (703).

3. A film inlet clamp closer according to claim 1, characterized in that: The axis of rotation of the first connecting ring (402) and the connecting frame (401) is perpendicular to the axis of rotation of the connecting plate (403) and the first connecting ring (402).

4. A film inlet clamp closer according to claim 1, characterized in that: The second connecting seat (501) is fixedly mounted on the bottom of the connecting plate (403).

5. The film inlet clamp closer according to claim 1, characterized in that: The second connecting ring (601) is fixedly mounted inside the connecting groove (502).

6. A film inlet clamp closer according to claim 1, characterized in that: The connecting cone (604) is located inside the conical groove (503), and the angle of the top angle of the conical groove (503) is greater than the angle of the top angle of the connecting cone (604).

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