Belt feeding, discharging and tensioning device of packing machine

Abstract

The utility model discloses a packing machine belt advancing and retreating and belt tensioning device which comprises a supporting plate, a belt tensioning device and a belt tensioning device. The belt advancing and retreating mechanism is arranged on the supporting plate; the tensioning belt mechanism is connected with the supporting plate in a sliding manner; the belt advancing and retreating mechanism comprises a belt advancing and retreating driving motor arranged on the supporting plate; the advance and retreat belt driving wheel is connected with the driving end of the advance and retreat belt driving motor; the tensioning belt mechanism comprises a lifting mechanism and a tensioning mechanism, wherein the lifting mechanism is connected with the supporting plate in a sliding mode; the middle of the connecting top plate is a hollow part, the two ends of the connecting top plate are of groove structures, and the advancing and retreating belt driving wheel is arranged in the hollow part of the middle of the connecting top plate; and the rollers are rotationally connected with the groove structures on the two sides of the connecting top plate. According to the utility model, the belt feeding and withdrawing mechanism is used for feeding and withdrawing the belt, and after the belt withdrawing is completed, the lifting mechanism in the belt tensioning mechanism descends to drive the packing belt on the belt feeding and withdrawing driving wheel to be pulled down, so that the packing belt is tensioned, the structure is simple, and the maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a packing machine feed belt and tension belt device. Background Technology

[0002] A strapping machine, also known as a bundling machine or strapping machine, is a machine that uses strapping tape to wrap around products or packages, then tightens it and connects the ends by heat welding or using buckles. Its function is to ensure the strapping tape adheres tightly to the surface of the bundled goods, preventing the goods from scattering during transportation and storage due to loose strapping, while also ensuring a neat and aesthetically pleasing bundle. Currently, strapping machines typically tighten the strapping tape loops wrapped around the bundled items and secure them by heat-sealing the overlapping ends of the strapping tape. (Chinese Patent CN) 102501997A discloses a baling machine, which includes a tensioning belt roller assembly comprising a drive wheel coaxially connected to a drive gear, and a driven wheel coaxially connected to a driven gear. The driven gear is connected to an electromagnet-controlled clutch drive mechanism, i.e., the suction cylinder, which controls whether it meshes with the drive gear. The drive gear and the driven gear are located on the mounting plate where the drive motor is located. The suction cylinder drives one end of a swing arm, which in turn drives an eccentric mechanism. The eccentric mechanism includes a connecting plate and an eccentric shaft mounted on one side of the connecting plate. The eccentric shaft is connected to the swing arm, and the other end of the connecting plate... The shaft connecting the driven wheel to the side is driven by the rotation of the eccentric mechanism, which engages or disengages the driven gear with the driving gear. When engaged, the driven wheel presses against the driving wheel, clamping the packing strap. At this time, the driving wheel rotates actively under the drive of the motor, and the driven wheel rotates in the opposite direction through the transmission of the gear pair, thereby tightening the packing strap. The number of rotations or the rotation angle determines the degree of tension of the packing strap. The adjustment of the number of rotations or the rotation angle can be achieved through digital control of the motor rotation. The disadvantage of this technology is that the internal mechanism of the tensioning device is highly integrated, and the maintenance is also difficult. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a simple structure and an adjustable tensioning length for the packing machine's feed and tensioning belts.

[0004] The purpose of this utility model is achieved in the following way: A packing machine feed and tensioning device, comprising:

[0005] Support plate, connected to the frame of the packing machine;

[0006] An advance / retreat mechanism is mounted on the support plate;

[0007] The tensioning belt mechanism is slidably connected to the support plate;

[0008] The advance / retreat belt mechanism includes:

[0009] A forward / reverse drive motor is mounted on the support plate;

[0010] A forward / reverse belt drive wheel is connected to the drive end of the forward / reverse belt drive motor; the tensioning belt mechanism includes:

[0011] The lifting mechanism is slidably connected to the support plate;

[0012] A connecting top plate, wherein the middle part of the connecting top plate is hollow and the two ends are grooved structures, and the forward and backward belt drive wheel is located in the middle hollow part of the connecting top plate;

[0013] The rollers are rotatably connected to the groove structures on both sides of the connecting top plate.

[0014] In this invention, the belt is fed and unloaded through the belt feeding and unloading mechanism. After unloading, the lifting mechanism in the tensioning mechanism descends, driving the packing strap on the belt feeding and unloading drive wheel to pull down, thereby tightening the packing strap. The structure is simple and easy to maintain.

[0015] As an optional solution to the technical solution of this utility model, the lifting mechanism includes:

[0016] Electromagnet base, connected to the frame of the packing machine;

[0017] An electromagnet core receiving hole is provided on the electromagnet base;

[0018] An electromagnet core is slidably connected to the electromagnet core receiving hole;

[0019] A spring is connected between the electromagnet core and the bottom wall of the electromagnet core receiving hole;

[0020] The sliding frame is connected to the electromagnet core.

[0021] The lifting mechanism of this utility model consists of an electromagnet base, an electromagnet core, a spring, and a sliding frame. In normal operation, the electromagnet core is located in the electromagnet base, and the spring supports the electromagnet core. When it is necessary to tighten the packing strap, the electromagnet base is energized to generate a suction force, which pulls the electromagnet core down and compresses the spring. At the same time, the electromagnet core pulls the sliding frame down, thereby pulling down the packing strap located on the forward and backward belt drive wheel and tightening the packing strap. By adjusting the energization, the magnitude of the suction force can be adjusted, thereby regulating the pulling progress.

[0022] As an optional solution to the technical solution of this utility model, the sliding frame includes:

[0023] The first connecting block is connected to the electromagnet core;

[0024] The second connecting block is located at both ends of the first connecting block;

[0025] The sliding seat is connected to the support plate;

[0026] A linear bearing is connected to the sliding seat, with one end of the linear bearing connected to the connecting top plate and the other end connected to the second connecting block.

[0027] As an optional solution to the technical solution of this utility model, the electromagnet core includes:

[0028] The first cylindrical block is connected to the sliding frame at its upper end;

[0029] A conical block, the larger circular end of which is connected to the lower end of the first cylindrical block;

[0030] The second cylindrical block has its upper end connected to the small round end of the conical block, and its lower end passes through the electromagnet core receiving hole. The spring is located between the conical block and the bottom wall of the electromagnet core receiving hole.

[0031] As an optional solution to the technical solution of this utility model, the lifting mechanism further includes

[0032] Electromagnet bracket connects the electromagnet base to the packaging machine frame;

[0033] The first limiting hole is provided on both sides of the electromagnet bracket, and the first connecting block moves within the first limiting hole;

[0034] The second limiting hole is located at the bottom of the electromagnet bracket, and the electromagnet core is slidably connected to the second limiting hole.

[0035] The first and second limiting holes limit the movement of the first connecting block and the electromagnet core, making the movement more stable.

[0036] As an optional solution to the technical solution of this utility model, a protective cover is disposed above the forward and backward drive wheel.

[0037] The beneficial effects of this utility model are:

[0038] (1) The packing machine feeding and unloading belt and tensioning belt device of this utility model completely changes the structure of the prior art. The feeding and unloading belt is carried out through the feeding and unloading belt mechanism. After the unloading is completed, the lifting mechanism in the tensioning belt mechanism descends, driving the packing belt on the feeding and unloading belt drive wheel to pull down, thereby tightening the packing belt. The structure is simple, easy to assemble, easy to maintain, and cost-saving.

[0039] (2) The lifting mechanism consists of an electromagnet base, an electromagnet core, a spring, and a sliding frame. In normal condition, the electromagnet core is located in the electromagnet base, and the spring supports the electromagnet core. When it is necessary to tighten the packing strap, the electromagnet base is energized to generate a suction force, which pulls the electromagnet core down and compresses the spring. At the same time, the electromagnet core pulls the sliding frame down, thereby pulling down the packing strap located on the forward and backward belt drive wheel and tightening the packing strap. By adjusting the energization, the magnitude of the electromagnet base's suction force is adjusted, thereby achieving the function of adjusting the pulling speed. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments 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.

[0041] Figure 1 This is a schematic diagram of the initial state of the packing machine's feed and tensioning strap device;

[0042] Figure 2 This is a schematic diagram of the structure of the packing machine of this utility model when the forward and backward belts and tension belts are pulled down;

[0043] Figure 3 This is a schematic diagram of the structure of the electromagnet base, electromagnet core, and spring in this utility model.

[0044] Figure label:

[0045] 1-Support plate;

[0046] 2-Forward / reverse belt mechanism; 21-Drive motor; 22-Forward / reverse belt drive wheel; 23-Protective cover;

[0047] 3-Tensioning belt mechanism; 31-Lifting mechanism; 311-Electromagnet seat; 312-Electromagnet core receiving hole; 313-Electromagnet core; 3131-First cylindrical block; 3132-Conical block; 3133-Second cylindrical block; 314-Spring; 315-Sliding frame; 3151-First connecting block; 3152-Second connecting block; 3153-Sliding seat; 3154-Linear bearing; 316-Electromagnet bracket; 317-First limiting hole; 318-Second limiting hole; 32-Connecting top plate; 33-Roller; Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] like Figure 1-2 As shown, a packing machine feed and tensioning device includes: a support plate 1, a feed and tensioning mechanism 2, and a tensioning mechanism 3, wherein: the support plate 1 is connected to the packing machine frame and is used to support the feed and tensioning mechanism 2 and the tensioning mechanism 3; the feed and tensioning mechanism 2 is disposed on the support plate 1; and the tensioning mechanism 3 is slidably connected to the support plate 1.

[0052] Specifically, the feed and unload mechanism 2 includes: a feed and unload drive motor 21 and a feed and unload drive wheel 22 connected to the drive end of the feed and unload drive motor 21. The feed and unload drive wheel 22 is driven to rotate by the feed and unload drive motor 21. Under the action of friction, the feed and unload drive wheel 22 causes the packing strap covering its surface to move. Under the action of the forward and reverse rotation of the feed and unload drive motor 21, the packing strap is fed and unloaded.

[0053] The tensioning belt mechanism 3 includes: a lifting mechanism 31, a connecting top plate 32, and rollers 33, wherein: the lifting mechanism 31 is slidably connected to the support plate 1; the connecting top plate 32 has a hollow middle section and grooved structures at both ends, and the forward and backward belt drive wheel 22 is located in the hollow middle section of the connecting top plate 32; the rollers 33 are rotatably connected to the grooved structures on both sides of the connecting top plate 32.

[0054] The strapping enters from below the roller 33 on one side of the feed and retract drive wheel 22, wraps around to the upper surface of the feed and retract drive wheel 22, and then exits from below the roller 33 on the other side of the feed and retract drive wheel 22. After the feed and retract mechanism 2 completes the tape retraction, the lifting mechanism 31 descends and pulls down the strapping on the feed and retract drive wheel 22, thereby tightening the strapping. The structure is simple and easy to maintain.

[0055] like Figure 2-3As shown, in this embodiment, the lifting mechanism 31 includes: an electromagnet base 311, an electromagnet core receiving hole 312, an electromagnet core 313, a spring 314, and a sliding frame 315, wherein: the electromagnet base 311 is connected to the frame of the packaging machine; the electromagnet core receiving hole 312 is provided on the electromagnet base 311; the electromagnet core 313 is placed in the electromagnet core receiving hole 312 and is slidably connected to the electromagnet core receiving hole 312; the spring 314 is connected between the electromagnet core 313 and the bottom wall of the electromagnet core receiving hole 312; and the sliding frame 315 is connected to the top of the electromagnet core 313.

[0056] In normal conditions, the electromagnet core 313 is located in the electromagnet base 311, and the spring 314 supports the electromagnet core 313. When it is necessary to tighten the packing strap, the electromagnet base 311 is energized to generate a magnetic force, which pulls the electromagnet core 313 down and compresses the spring 314. At the same time, the electromagnet core 313 pulls the sliding frame 315 down, thereby pulling down the packing strap located on the forward and backward belt drive wheel 22 and tightening the packing strap. By adjusting the energization, the magnitude of the magnetic force can be adjusted, thereby adjusting the pulling progress.

[0057] Specifically, the sliding frame 315 includes: a first connecting block 3151, a second connecting block 3152, a sliding seat 3153, and a linear bearing 3154, wherein: the first connecting block 3151 is connected to the top of the electromagnet core 313; the second connecting block 3152 is located at both ends of the first connecting block 3151; the sliding seat 3153 is connected to the support plate 1; the linear bearing 3154 is connected to the sliding seat 3153, one end of the linear bearing 3154 is connected to the connecting top plate 32, and the other end is connected to the second connecting block 3152.

[0058] When the electromagnet base 311 is energized and generates a suction force, the electromagnet core 313 is pulled down. During this process, the electromagnet core 313 pulls the first connecting block 3151, which drives the linear bearing 3154 to move downward within the sliding seat 3153. This causes the connecting top plate 32 and the rollers 33 on the connecting top plate 32 to move downward. The rollers 33 at both ends of the forward and backward belt drive wheel 22 limit the packing strap between the rollers 33 and the connecting top plate 32. During the downward pull of the electromagnet core 313, the packing strap is tightened.

[0059] like Figure 3 As shown, as a further embodiment, the electromagnet core 313 includes: a first cylindrical block 3131, a conical block 3132, and a second cylindrical block 3133, wherein: the upper end of the first cylindrical block 3131 is connected to the first connecting block 3151; the large circular end of the conical block 3132 is connected to the lower end of the first cylindrical block 3131; the upper end of the second cylindrical block 3133 is connected to the small circular end of the conical block 3132, and the lower end passes through the electromagnet core receiving hole 312; a spring 314 is disposed on the second cylindrical block 3133 between the conical block 3132 and the bottom wall of the electromagnet core receiving hole 312.

[0060] In addition, the lifting mechanism 31 also includes an electromagnet bracket 316, a first limiting hole 317, and a second limiting hole 318. The electromagnet bracket 316 connects the electromagnet base 311 to the packaging machine frame. The first limiting hole 317 is located on both sides of the electromagnet bracket 316, and the first connecting block 3151 moves within the first limiting hole 317. The second limiting hole 318 is located at the bottom of the electromagnet bracket 316, and the electromagnet core 313 is slidably connected to the second limiting hole 318. The first limiting hole 317 and the second limiting hole 318 limit the first connecting block 3151 and the electromagnet core 313, making the movement more stable. A protective cover 23 is provided above the forward and backward belt drive wheel 22 to facilitate the limiting of the packaging strap above the forward and backward belt drive wheel 22, and at the same time, it protects the forward and backward belt drive wheel 22.

[0061] The packing machine feed and unfeed belt and tensioning device of this utility model completely changes the structure of the existing technology. The feed and unfeed belt is fed through the feed and unfeed belt mechanism. After the unfeeding is completed, the lifting mechanism in the tensioning belt mechanism descends, driving the packing belt on the feed and unfeed belt drive wheel to pull down, thereby tightening the packing belt. The structure is simple, easy to assemble, easy to maintain, and cost-saving.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A packing machine feed and tensioning device, characterized in that, include: Support plate (1) is connected to the frame of the packing machine; The forward and backward conveyor mechanism (2) is mounted on the support plate (1); The tensioning belt mechanism (3) is slidably connected to the support plate (1); The advance / retreat belt mechanism (2) includes: An advance / reverse drive motor (21) is mounted on the support plate (1); The belt drive wheel (22) is connected to the drive end of the belt drive motor (21); the tensioning belt mechanism (3) includes: The lifting mechanism (31) is slidably connected to the support plate (1); The connecting top plate (32) has a hollow middle section and grooved ends. The forward and backward drive wheel (22) is located in the hollow middle section of the connecting top plate (32). The roller (33) is rotatably connected to the groove structure on both sides of the connecting top plate (32).

2. The packing machine feed and tensioning device according to claim 1, characterized in that, The lifting mechanism (31) includes: Electromagnet base (311) is connected to the frame of the baling machine; An electromagnet core receiving hole (312) is provided on the electromagnet base (311); The electromagnet core (313) is slidably connected to the electromagnet core receiving hole (312); A spring (314) is connected between the electromagnet core (313) and the bottom wall of the electromagnet core receiving hole (312); The sliding frame (315) is connected to the electromagnet core (313).

3. The packing machine feed and tensioning device according to claim 2, characterized in that, The sliding frame (315) includes: The first connecting block (3151) is connected to the electromagnet core (313); The second connecting block (3152) is disposed at both ends of the first connecting block (3151); The sliding seat (3153) is connected to the support plate (1); A linear bearing (3154) is connected to the sliding seat (3153). One end of the linear bearing (3154) is connected to the connecting top plate (32), and the other end is connected to the second connecting block (3152).

4. The packing machine feed and tensioning device according to claim 2, characterized in that, The electromagnet core (313) includes: The first cylindrical block (3131) is connected at its upper end to the sliding frame (315); The conical block (3132) has its large circular end connected to the lower end of the first cylindrical block (3131); The second cylindrical block (3133) has its upper end connected to the small round end of the conical block (3132) and its lower end passing through the electromagnet core receiving hole (312). The spring (314) is located between the conical block (3132) and the bottom wall of the electromagnet core receiving hole (312).

5. The packing machine feed and tensioning device according to claim 3, characterized in that, The lifting mechanism (31) also includes Electromagnet bracket (316) connects the electromagnet base (311) to the frame of the packing machine; The first limiting hole (317) is provided on both sides of the electromagnet bracket (316), and the first connecting block (3151) moves within the first limiting hole (317); The second limiting hole (318) is located at the bottom of the electromagnet bracket (316), and the electromagnet core (313) is slidably connected to the second limiting hole (318).

6. The packing machine feed and tensioning device according to claim 3, characterized in that, The advance / retreat belt mechanism (2) also includes: A protective cover (23) is provided above the forward and backward drive wheel (22).

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