Stretching film pre-tightening device of stretching film packaging machine
By introducing a limit plate and size markings into the stretch film packaging machine, the problems of offset and inaccurate adjustment of the stretch film pre-tensioning device are solved, achieving stable pre-tensioning and precise adjustment of the stretch film, thus improving packaging quality and equipment lifespan.
Patent Information
- Application Number
- CN202520443274.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing stretch film pre-tightening devices lack limiting devices, which makes the stretch film prone to deviation and shaking during pre-tightening, and the pre-tightening degree is difficult to adjust accurately, affecting the quality of the finished product.
A pre-tensioning device for stretch film is designed, comprising a main body, a pre-tensioning mechanism, a motor, a double-headed screw, a movable block, a pre-tensioning roller, a limiting plate, and size markings. The motor drives the double-headed screw to move the movable block, and the limiting plate and slide groove provide stability. The size markings are used for precise adjustment to ensure the accurate position of the pre-tensioning roller.
It effectively prevents the stretch film from shifting during the pre-tightening process, enabling precise adjustment of the pre-tightening degree, improving the consistency of packaging quality and extending the service life of the equipment.
Smart Images
Figure CN223919665U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to stretch film packaging technical field, concretely is a kind of stretch film pre-tightening device of stretch film packaging machine. BACKGROUND
[0002] Stretch film packaging machine is a special equipment, for tightly wrapping stretch film on the surface of goods, this stretch film mainly plays the role of protection and stabilizing goods, ensure that goods are not damaged in the transportation and storage link, stretch film pre-tightening device can first stretch the stretch film to appropriate tightness, so that the film can be more adhered to the surface of goods, while providing sufficient tension, ensure that goods remain stable and safe state after packaging. The existing stretch film pre-tightening device lacks limiting device when in use, when pre-tightening stretch film, stretch film is prone to deviation and shaking, resulting in that stretch film deviates from the center of finished product when packaging, affect finished product quality, and lack reference mark when adjusting stretch film pre-tightness, difficult to accurately adjust. SUMMARY
[0003] Therefore, the utility model discloses a kind of stretch film pre-tightening device of stretch film packaging machine, to solve the technical problems that stretch film is prone to deviation and shaking when pre-tightening and pre-tightness is difficult to accurately adjust.
[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of stretch film pre-tightening device of stretch film packaging machine, including including main body and pre-tightening mechanism, the top of the main body is provided with sliding slot, the pre-tightening mechanism includes shell, the side of the shell is provided with motor, the output of the motor is provided with double-end screw rod, first movable block and second movable block are provided on the double-end screw rod, the top of the first movable block is provided with first pre-tightening roller, the top of the first pre-tightening roller is provided with screw rod, the screw rod is connected with adjusting block by screw thread, the bottom of the adjusting block is connected with limiting plate by connecting column, the top of the second movable block is connected with second pre-tightening roller by connecting rod.
[0005] By adopting the above technical scheme, limiting plate is connected with adjusting block by connecting column, and the stretch film on the first pre-tightening roller is limited, to prevent deviation in the working process.
[0006] Further, the sliding slot is provided with two, and the two sliding slots are symmetrically arranged along the central axis of the main body.
[0007] By adopting the above technical scheme, the setting of two sliding slots provides double support and guide, can effectively maintain the stability of pre-tightening roller, prevent deviation or shaking in the moving process.
[0008] Further, the second pre-tightening roller is provided with three, and the three second pre-tightening rollers are uniformly arranged in a circumferential array.
[0009] By adopting the technical scheme, the three second pre-tightening rollers can more comprehensively contact and compress the stretching film, thereby enhancing the pre-tightening effect and ensuring that the stretching film remains in a tight state during the packaging process.
[0010] Further, the connecting columns are provided in two, and the two connecting columns are symmetrically arranged along the central axis of the adjusting block.
[0011] By adopting the technical scheme, the two connecting columns jointly bear the pressure received by the limiting plate, disperses the force point, reduces the local pressure concentration, and prolongs the service life of the equipment.
[0012] Further, the top of the main body is provided with a size mark, and the size mark is arranged in parallel with the sliding groove.
[0013] By adopting the technical scheme, the size mark provides an intuitive reference for the operator, so that the user can quickly and accurately understand the position of the current pre-tightening roller, thereby making accurate adjustment.
[0014] Further, the bottom of the main body is provided with a fixing column, and the bottom of the fixing column is provided with a bottom plate.
[0015] By adopting the technical scheme, the fixing column enhances the stability of the main body during the working process, and prevents displacement or tilting caused by external force or equipment vibration.
[0016] In summary, the utility model mainly has the following beneficial effects:
[0017] 1. The utility model discloses a double-end screw and a size mark, which can drive two movable blocks to move in opposite directions simultaneously when rotating, simplify the adjustment process, improve the adjustment efficiency and accuracy, accurately adjust the relative distance between the two pre-tightening rollers by controlling the rotation degree of the double-end screw, and provide an intuitive reference for the operator through the size mark arranged at the top of the main body.
[0018] 2. The utility model discloses a screw, an adjusting block and a limiting plate, the screw is connected to the adjusting block through threads, so that the adjusting block can move up and down along the screw, the operator can rotate the adjusting block to adjust its height according to the width of the stretching film and the pre-tightening requirement, so that the equipment can more flexibly adapt to different stretching film materials, and the adjusting block is connected to the limiting plate through the connecting column, so that the height of the limiting plate changes with the height of the adjusting block, and the offset and shaking of the stretching film during the pre-tightening process are limited. DRAWINGS
[0019] Figure 1The utility model discloses a three -dimensional structure schematic drawing of the utility model;
[0020] Figure 2 The utility model discloses a double -end screw structure schematic drawing of the utility model;
[0021] Figure 3 The utility model discloses the structure schematic drawing of the adjusting block of the utility model;
[0022] Figure 4 The utility model discloses a plane structure schematic drawing.
[0023] In the drawing: 1, main body, 2, pre -tightening mechanism, 201, shell, 202, motor, 203, double -end screw, 204, first movable block, 205, first pre -tightening roller, 206, screw, 207, adjusting block, 208, connecting column, 209, limit board, 210, second movable block, 211, connecting rod, 212, second pre -tightening roller, 213, sliding slot, 3, size mark, 4, fixed column, 5, bottom plate. DETAILED DESCRIPTION
[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model and cannot be understood as limiting the utility model.
[0025] A kind of pre-tightening device of stretch film packaging machine of stretch film, as shown in Figures 1-4 It includes main body 1 and pre -tightening mechanism 2, the top of main body 1 is set with sliding slot 213, pre -tightening mechanism 2 includes shell 201, the side of shell 201 is provided with motor 202, the output of motor 202 is provided with double -end screw 203, double -end screw 203 is provided with first movable block 204 and second movable block 210, the top of first movable block 204 is provided with first pre -tightening roller 205, the top of first pre -tightening roller 205 is provided with screw 206, screw 206 is connected with adjusting block 207 by screw thread, the bottom of adjusting block 207 is connected with limit board 209 by connecting column 208, the top of second movable block 210 is connected with second pre -tightening roller 212 by connecting rod 211, limit board 209 is connected with adjusting block 207 by connecting column 208, and the limit effect of first pre -tightening roller 205 to stretch film is played, prevent its from deviating in working process, and motor 202 provides power source for pre -tightening mechanism 2, so that pre -tightening operation is more automatic and efficient.
[0026] Refer to Figure 3The two sliding grooves 213 are symmetrically arranged along the central axis of the main body 1, and the arrangement of the two sliding grooves 213 provides double support and guidance, can effectively maintain the stability of the pre-tightening roller, prevents the pre-tightening roller from being skewed or shaken during movement, and the symmetrically arranged sliding grooves 213 can maintain the symmetry and balance of the pre-tightening roller during movement.
[0027] Referring to Figure 3 The three second pre-tightening rollers 212 are arranged in a circumferential array at equal intervals, and the arrangement of the three second pre-tightening rollers 212 can more comprehensively contact and compress the stretching film, thereby enhancing the pre-tightening effect and ensuring that the stretching film remains in a tight state during packaging.
[0028] Referring to Figure 2 The two connecting columns 208 are symmetrically arranged along the central axis of the adjusting block 207, and the two connecting columns 208 jointly bear the pressure received by the limiting plate 209, disperse the force application point, reduce local pressure concentration, and prolong the service life of the equipment.
[0029] Referring to Figure 1 The top of the main body 1 is provided with a size mark 3, and the size mark 3 is arranged in parallel with the sliding groove 213.
[0030] Referring to Figure 1 , Figure 4 The bottom of the main body 1 is provided with a fixed column 4, and the bottom of the fixed column 4 is provided with a bottom plate 5.
[0031] The implementation principle of the utility model is as follows: firstly, the motor 202 drives the double-headed screw rod 203 to rotate, the rotation of the double-headed screw rod 203 drives the first movable block 204 and the second movable block 210 to move in opposite directions, thereby driving the first pre-tightening roller 205 and the second pre-tightening roller 212 to move along the sliding groove 213, and accurate adjustment is performed according to the size mark 3.
[0032] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.
Claims
1. A stretch film pre-tensioning device for a stretch film packaging machine, characterized by: Including the main body (1) and pre-tightening mechanism (2), the top of the main body (1) is provided with a chute (213), the pre-tightening mechanism (2) includes a shell (201), one side of the shell (201) is provided with a motor (202), the output end of the motor (202) is provided with a double-end screw rod (203), the double-end screw rod (203) is provided with a first movable block (204) and a second movable block (210), the top of the first movable block (204) is provided with a first pre-tightening roller (205), the top of the first pre-tightening roller (205) is provided with a screw rod (206), the screw rod (206) is connected with an adjusting block (207) through a thread, the bottom of the adjusting block (207) is connected with a limiting plate (209) through a connecting column (208), the top of the second movable block (210) is connected with a second pre-tightening roller (212) through a connecting rod (211).
2. A pre-tensioning device for a stretch film packaging machine according to claim 1, characterized in that: The chute (213) is provided with two, and the two chutes (213) are symmetrically arranged along the central axis of the main body (1).
3. A pre-tensioning device for a stretch film packaging machine according to claim 1, characterized in that: The second pre-tightening roller (212) is provided with three, and the three second pre-tightening rollers (212) are uniformly arranged in a circumferential array.
4. A pre-tensioning device for a stretch film packaging machine according to claim 1, characterized in that: The connecting column (208) is provided with two, and the two connecting columns (208) are symmetrically arranged along the central axis of the adjusting block (207).
5. A pre-tensioning device for a stretch film packaging machine according to claim 1, characterized in that: The top of the main body (1) is provided with a size mark (3), and the size mark (3) is parallel to the chute (213).
6. A pre-tensioning device for a stretch film packaging machine according to claim 1, characterized in that: The bottom of the main body (1) is provided with a fixed column (4), and the bottom of the fixed column (4) is provided with a bottom plate (5).