Packaging film folding mechanism for middle sealing bag production line

Abstract

The utility model discloses a packaging film folding mechanism for a middle sealing bag production line. The packaging film folding mechanism comprises a rack, a fixing block is connected to the machine frame, a connecting rod vertically penetrating through the fixing block is connected to the fixing block in a sliding mode, a hoop located below the fixing block is arranged on the connecting rod in a clamping and sleeving mode, and a guide block is fixed to the hoop. A guide rod vertically penetrating through the guide block is slidably connected to the guide block, and the top end of the guide rod is fixed to the fixing block. A mounting block is fixed to the bottom end of the connecting rod, an inverted-T-shaped mounting piece which is horizontally and longitudinally arranged is fixed to the bottom end of the mounting block, and a roller platform fixed to the rack is arranged below the mounting piece in a contact mode; two material guide wheels rotationally connected to the two sides of the mounting block are arranged at the front end of the mounting piece, the material guide wheels are arranged in a suspended mode, and a guide roller horizontally and transversely rotationally connected to the rack is arranged on the front sides of the material guide wheels in a tightly attached mode. The device not only can improve the quality of finished products, but also has the advantages of being high in operation stability, wide in application range and convenient to adjust and operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing bag production equipment field, especially a packing film folding mechanism for middle seal bag production line. BACKGROUND

[0002] The middle seal bag, also known as back seal bag, is a kind of packing bag with the edge of the bag body on the back, which is widely used in the packaging of candies, bagged instant noodles, dairy products and other goods.

[0003] The existing middle seal bag production line is similar to the high-efficiency and safe middle seal bag machine disclosed in ZL201821501003.3, which folds the raw material film passing through the first forming mechanism, wherein the first forming mechanism includes a T-shaped plate, a material guide roller connected to the front end of the T-shaped plate, a plurality of groups of adjusting rollers connected to the rear of the T-shaped plate, and a pressure plate frame. However, since the longitudinal heat sealing mechanism, the material cutting mechanism and the cooling mechanism in the device need to be relatively stationary for a period of time to complete the heat sealing, material cutting and cooling actions, the raw material film needs to be transported intermittently. When the raw material film starts to transport each time, the raw material film at the material guide roller will be driven, and at this time, the stress between the material guide roller and the raw material film is easy to deform or damage the raw material film, affecting the quality of the finished middle seal bag.

[0004] Therefore, the existing middle seal bag folding mechanism has the problem of poor quality of finished products. INVENTION CONTENTS

[0005] The utility model discloses a kind of middle seal bag production line packing film folding mechanisms. The utility model has the advantages that finished product quality is good.

[0006] The technical scheme of the utility model: a kind of middle seal bag production line packing film folding mechanism, including rack;Fixed block is connected on the rack, and fixed block is slidably connected with the connecting rod that is vertically through fixed block, the connecting rod is clamped with the clamp that is located below fixed block, and the clamp is fixed with guide block;Guide block is slidably connected with the guide rod that is vertically through guide block, and the top of guide rod is fixed in fixed block;The bottom of connecting rod is fixed with the installation block that is horizontally longitudinally arranged, and the installation block bottom is fixed with the installation piece of the inverted T shape that is horizontally longitudinally arranged, and the installation piece is contacted with the cylinder platform that is fixed on the rack below;Two material guide wheels rotatingly connected on the two sides of installation block are arranged on the front end of installation piece, and the material guide wheel is suspendedly arranged, and the front side of material guide wheel is closely arranged with the guide roller that is horizontally transversely rotatingly connected on the rack.

[0007] In the aforementioned middle seal bag production line packing film folding mechanism, the bottom surface of the material guide wheel and the bottom surface of the installation piece are flushly arranged.

[0008] In the aforementioned packaging film folding mechanism for middle-seal bag production line, a counterweight is threadedly connected to the top end of the connecting rod and is located above the fixed block.

[0009] In the aforementioned packaging film folding mechanism for middle-seal bag production line, a positioning screw rod is threadedly connected to the fixed block and vertically contacts the connecting rod arranged on the connecting rod, and a rotating handle is connected to the positioning screw rod.

[0010] In the aforementioned packaging film folding mechanism for middle-seal bag production line, a spring is arranged outside the connecting rod between the clamp and the fixed block.

[0011] In the aforementioned packaging film folding mechanism for middle-seal bag production line, installation tables are fixed to both sides of the drum platform of the rack, the installation tables are horizontally and longitudinally arranged, waist holes are arranged on the installation tables and horizontally and longitudinally, a plurality of adjusting pressure rollers and a plurality of adjusting pressure plates are connected in the waist holes.

[0012] In the aforementioned packaging film folding mechanism for middle-seal bag production line, the adjusting pressure roller comprises an adjusting block arranged on the installation table, a screw rod is connected to the bottom surface of the adjusting block and passes through the waist hole downward, a positioning nut is threadedly connected to the screw rod and is located below the waist hole, a first adjusting rod is connected to the adjusting block, a first locking piece is threadedly connected to the first adjusting rod and is arranged on the first adjusting rod, the end of the first adjusting rod is hingedly connected to a second adjusting rod through a second locking piece, and a pressure roller in the shape of a circular truncated cone is rotatably connected to the end of the second adjusting rod.

[0013] In the aforementioned packaging film folding mechanism for middle-seal bag production line, the adjusting pressure plate comprises a pressure plate arranged on the installation table, the pressure plate is in the shape of a strip, and a position adjusting waist hole is arranged on the pressure plate, a positioning screw rod is arranged from below to above and penetrates through the waist hole and the position adjusting waist hole, and a locking nut is threadedly connected to the positioning screw rod and is located above the pressure plate.

[0014] Compared with the prior art, the installation piece in the shape of an inverted T is fixed to the bottom end of the installation block, the installation block is fixed to the bottom end of the connecting rod, and the connecting rod is vertically and slidably connected to the fixed block, so that when intermittent conveying of the packaging film starts, the force of the raw material film acting on the two material guide wheels can be transmitted to the connecting rod, the connecting rod can be lifted relative to the fixed block, a certain buffering effect is achieved, deformation or damage of the packaging film is avoided, and the quality of the finished product is improved; the connecting rod is connected to the guide block through the clamp, the guide block is vertically and slidably connected to the guide rod fixed to the fixed block, so that the connecting rod can be stably vertically lifted after being stressed, and rotation and deviation of the connecting rod do not affect the folding effect of the packaging film.

[0015] In addition, the bottom surface of the material guide wheel and the mounting piece bottom plate are flush, so that the middle part of the packaging film can be stably positioned between the mounting piece and the roller platform after passing through the two material guide wheels, and the two sides of the packaging film can be stably folded upwards above the mounting piece, thereby ensuring the running stability.

[0016] The counterweight is threadedly connected to the top end of the connecting rod and is located above the fixing block, and the weight of the connecting rod can be adjusted according to the strength of the packaging film, so that the connecting rod can be adapted to packaging films of different strengths, and the application range is wide.

[0017] The positioning screw rod is vertically arranged and in contact with the connecting rod, and the rotating handle is connected to the positioning screw rod; when the rotating handle is loosened, the connecting rod can be extended or retracted relative to the fixing block, and when the rotating handle is tightened on the connecting rod, the connecting rod is fixed with the fixing block, and the gravity of the connecting rod does not act on the packaging film, thereby facilitating the adjustment of the packaging film by the worker.

[0018] The spring is arranged outside the connecting rod between the clamp and the fixing block, so that the spring can be compressed when the packaging film drives the connecting rod to move upwards relative to the fixing block, and the spring can reset to drive the connecting rod to move downwards when the packaging film is normally conveyed, so that the spring can play a damping effect, reduce the vibration of the connecting rod, and make the packaging film conveying stable.

[0019] The waist hole is horizontally and longitudinally arranged on the mounting table corresponding to the two sides of the roller platform, and the plurality of adjusting pressure wheels and the plurality of adjusting pressure plates are connected in the waist hole, so that the positions of the adjusting pressure wheels and the adjusting pressure plates can be conveniently adjusted, and the packaging film can be better folded. The orientation of the first adjusting rod can be adjusted by rotating the adjusting block relative to the mounting table and then tightening the positioning nut on the screw rod; the length of the first adjusting rod extending out of the adjusting block can be adjusted by extending or retracting the first adjusting rod relative to the adjusting block and then tightening the first locking piece; the pressure position of the end pressure wheel of the second adjusting rod can be adjusted by swinging the second adjusting rod relative to the first adjusting rod and then tightening the second locking piece, so that the packaging film can be better folded.

[0020] Therefore, the packaging film conveying device has the advantages of improved product quality, high running stability, wide application range and convenient adjustment operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a structural schematic view of the packaging film conveying device;

[0022] Fig. 2is the structural schematic view of the fixed block, connecting rod and mounting piece part;

[0023] Fig. 3 is the structural schematic view of the adjusting pressure wheel;

[0024] Fig. 4 is the structural schematic view of the adjusting block part;

[0025] Fig. 5 is the structural schematic view of the adjusting pressure plate;

[0026] Fig. 6 is the structural schematic view of the positioning screw and locking nut.

[0027] The marks in the drawings are: 1-frame, 2-fixed block, 3-connecting rod, 4-hoop, 5-guide block, 6-guide rod, 7-mounting block, 8-mounting piece, 9-roller platform, 10-material guide wheel, 11-guide roller, 12-counterweight, 13-positioning screw, 14-rotary handle, 15-spring, 16-mounting table, 17-waist hole, 18-adjusting pressure wheel, 19-adjusting pressure plate, 20-adjusting block, 21-screw rod, 22-locking nut, 23-first adjusting rod, 24-second locking piece, 25-second adjusting rod, 26-pressure wheel, 27-pressure plate, 28-positioning waist hole, 29-positioning screw, 30-locking nut, 31-first locking piece. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and examples below, but not as the basis for limiting the utility model.

[0029] Example. A packaging film folding mechanism for middle-sealing bag production line, constitutes as shown in Figs. 1 to 6 The frame 1 is connected with the fixed block 2, the fixed block 2 is slidably connected with the connecting rod 3 vertically penetrating the fixed block 2, the connecting rod 3 is externally sleeved with the hoop 4 below the fixed block 2, and the hoop 4 is fixed with the guide block 5. The guide block 5 is slidably connected with the guide rod 6 vertically penetrating the guide block 5, and the top end of the guide rod 6 is fixed on the fixed block 2. The bottom end of the connecting rod 3 is fixed with the mounting block 7 arranged horizontally and longitudinally, the bottom end of the mounting block 7 is fixed with the mounting piece 8 arranged horizontally and longitudinally in inverted T shape, and the roller platform 9 fixed on the frame 1 is arranged in contact below the mounting piece 8. The mounting piece 8 is provided with two material guide wheels 10 rotatably connected on the two sides of the mounting block 7, and the material guide wheels 10 are arranged in suspension, and the front side of the material guide wheels 10 is closely arranged with the guide roller 11 rotatably connected horizontally and transversely on the frame 1.

[0030] The bottom surface of the material guiding wheel 10 is flush with the bottom surface of the mounting piece 8; a counterweight 12 is threadedly connected to the top end of the connecting rod 3, and the counterweight 12 is located above the fixing block 2; a positioning screw rod 13 is threadedly connected to the fixing block 2 and vertically faces the connecting rod 3 and contacts the connecting rod 3; a rotating handle 14 is connected to the positioning screw rod 13; a spring 15 is arranged between the clamp 4 and the fixing block 2 and is sleeved on the connecting rod 3; two mounting tables 16 are fixed on the rack 1 and correspond to the two sides of the drum platform 9, the mounting tables 16 are horizontally and longitudinally arranged, the mounting tables 16 are provided with waist holes 17 which are horizontally and longitudinally arranged, a plurality of adjusting pressure rollers 18 and a plurality of adjusting pressure plates 19 are connected in the waist holes 17; the adjusting pressure roller 18 comprises an adjusting block 20 located on the mounting table 16, a screw rod 21 is connected to the bottom surface of the adjusting block 20 and penetrates the waist hole 17 downward, a positioning nut 22 is threadedly connected to the screw rod 21 and is located below the waist hole 17; a first adjusting rod 23 is connected to the adjusting block 20, a first locking piece 31 is threadedly connected to the adjusting block 20 and is in contact with the first adjusting rod 23; the end of the first adjusting rod 23 is hingedly connected to a second adjusting rod 25 through a second locking piece 24, and a circular table-shaped pressure roller 26 is rotatably connected to the end of the second adjusting rod 25; the adjusting pressure plate 19 comprises a pressure plate 27 located on the mounting table 16, the pressure plate 27 is in a strip shape, and the pressure plate 27 is provided with a position adjusting waist hole 28; a positioning screw 29 penetrates the waist hole 17 and the position adjusting waist hole 28 from bottom to top, and a locking nut 30 is threadedly connected to the positioning screw 29 and is located above the pressure plate 27.

[0031] Working principle: the packaging film is passed between the guide roller 11 and the two material guiding wheels 10 from top to bottom, and then the packaging film below the two material guiding wheels 10 is introduced from below the mounting piece 8 and between the drum platform 9, and the packaging film on the two sides of the two material guiding wheels 10 is raised upward from the two sides of the mounting piece 8; the adjusting pressure rollers 18 on the mounting tables 16 on the two sides of the drum platform 9 on the rack 1 are adjusted, so that the packaging film raised upward on the two sides is stably folded and pressed on the two sides of the mounting piece 8; the adjusting pressure plates 19 on the mounting tables 16 on the two sides of the drum platform 9 on the rack 1 are adjusted, so that the two side edges of the packaging film are laminated in the middle.

[0032] When the packaging film is pulled forward each time, the force between the packaging film and the two material guide wheels 10 can lift the two material guide wheels 10 and the mounting block 7 upward, and the connecting rod 3 fixed with the mounting block 7 also moves upward relative to the fixed block 2, avoiding damage to the packaging film due to stress concentration on the packaging film. The staff can also adjust the weight of the connecting rod 3 according to the strength of the packaging film, which can adapt to packaging films of various strengths and has a wide range of applications. Since the hoop 4 is fixed on the connecting rod 3, the guide block 5 is fixed on the hoop 4, the guide rod 6 is vertically slidably arranged on the guide block 5, and the top end of the guide rod 6 is fixed on the fixed block 2, this makes the connecting rod 3, the mounting block 7 and the mounting piece 8 can only move vertically and will not rotate relative to the fixed block 2, which can better avoid the deflection of the mounting piece 8 and ensure the folding effect of the packaging film. The spring 15 is arranged between the hoop 4 and the fixed block 2 and is sleeved on the connecting rod 3, which plays a damping effect during the extension of the connecting rod 3 relative to the fixed block 2, making the extension process of the connecting rod 3 more stable and reducing the likelihood of up-and-down vibration, thereby improving the stability of the packaging film conveying.

[0033] When it is necessary to adjust the packaging film below the mounting piece 8, the staff can manually adjust the relative position between the connecting rod 3 and the fixed block 2, and then rotate the positioning screw 13 by rotating the handle 14 to make the positioning screw 13 tightly press the connecting rod 3 in the fixed block 2; at this time, the gravity of the connecting rod 3 will not act on the packaging film, facilitating the staff to adjust the packaging film.

[0034] After the staff loosens the positioning nut 22 on the screw rod 21, the screw rod 21 can slide in the waist hole 17 on the mounting table 16, thereby adjusting the position of the adjusting block 20 on the mounting table 16; at the same time, the staff can also rotate the adjusting block 20 to adjust the orientation of the first adjusting rod 23 on the adjusting block 20; after the position and orientation of the adjusting block 20 are adjusted, the staff only needs to tighten the positioning nut 22 on the screw rod 21 to fix the mounting table 16 on the mounting table 16. After the staff loosens the first locking part 31, the first adjusting rod 23 can be extended relative to the adjusting block 20 to adjust the length of the first adjusting rod 23 extending out of the adjusting block 20, and after the adjustment is completed, the first locking part 31 can be tightened. After the staff loosens the second locking part 24, the second adjusting rod 25 can swing up and down relative to the end of the first adjusting rod 23, so as to adjust the distance between the end of the second adjusting rod 25 and the bottom plate of the mounting piece 8, and after the adjustment is completed, the second locking part 24 can be tightened again. The pressing wheels 26 in the plurality of adjusting pressing wheels 18 can be adjusted in position, angle and height, so that the packaging film can gradually complete the folding operation after conveying through the plurality of adjusting pressing wheels 18, and the folding effect is good.

[0035] The position of the pressing plate 27 on the mounting table 16 can be adjusted by loosening the locking nut 30 on the positioning screw 29, and then sliding the positioning screw 29 and the pressing plate 27 in the waist hole 17 on the mounting table 16. Meanwhile, the position of the adjusting waist hole 28 relative to the positioning screw 29 can also be adjusted, so as to adjust the angle and the distance of the pressing plate 27 extending out of the waist hole 17. After the adjustment is completed, the locking nut 30 on the positioning screw 29 is tightened. The multiple adjusting pressing plates 19 can be adjusted in position and angle, so that the two side edges of the packaging film can be stacked after being conveyed through the multiple adjusting pressing plates 19.

Claims

1. A packaging film folding mechanism for a centerseal bag production line, comprising a frame (1); characterized in that: The rack (1) is connected with a fixed block (2), the fixed block (2) is connected with a connecting rod (3) which is vertically through the fixed block (2) in sliding mode, the connecting rod (3) is provided with a hoop (4) which is located below the fixed block (2) and is sleeved on the outer side of the connecting rod (3), and the hoop (4) is fixed with a guide block (5); the guide block (5) is connected with a guide rod (6) which is vertically through the guide block (5) in sliding mode, and the top end of the guide rod (6) is fixed on the fixed block (2); the bottom end of the connecting rod (3) is fixed with a mounting block (7) which is horizontally and longitudinally arranged, the bottom end of the mounting block (7) is fixed with a mounting piece (8) which is horizontally and longitudinally arranged in the shape of inverted T, and the mounting piece (8) is in contact with a roller platform (9) which is fixed on the rack (1) below; the front end of the mounting piece (8) is provided with two material guiding wheels (10) which are rotatably connected on the both sides of the mounting block (7), the material guiding wheels (10) are arranged in a suspended mode, and the front side of the material guiding wheels (10) is in close contact with a guide roller (11) which is horizontally and transversely rotatably connected on the rack (1).

2. The packaging film folding mechanism for a center-seal bag production line according to claim 1, characterized in that: The bottom surface of the material guiding wheel (10) and the bottom surface of the mounting piece (8) are arranged in a flush mode.

3. The packaging film folding mechanism for a center-seal bag production line according to claim 1, characterized in that: The top end of the connecting rod (3) is threadedly connected with a counterweight block (12), and the counterweight block (12) is located above the fixed block (2).

4. The packaging film folding mechanism for a center-seal bag production line according to claim 1, characterized in that: The fixed block (2) is threadedly connected with a positioning screw rod (13) which is vertically directed to the connecting rod (3) and is in contact with the connecting rod (3), and the positioning screw rod (13) is connected with a rotating handle (14).

5. The packaging film folding mechanism for a center-seal bag production line according to claim 1, characterized in that: The hoop (4) and the fixed block (2) are provided with a spring (15) which is sleeved on the outer side of the connecting rod (3).

6. The packaging film folding mechanism for a center-seal bag production line according to claim 1, characterized in that: The both sides of the rack (1) corresponding to the roller platform (9) are fixed with mounting tables (16), the mounting tables (16) are horizontally and longitudinally arranged, the mounting tables (16) are provided with waist holes (17) which are horizontally and longitudinally arranged, and the waist holes (17) are connected with a plurality of adjusting pressure wheels (18) and a plurality of adjusting pressure plates (19).

7. The packaging film folding mechanism for a center-seal bag production line according to claim 6, characterized in that: The adjusting pressure wheel (18) comprises an adjusting block (20) which is located on the mounting table (16), the bottom surface of the adjusting block (20) is connected with a screw rod (21) which penetrates through the waist hole (17) downward, the screw rod (21) is threadedly connected with a positioning nut (22) which is located below the waist hole (17); the adjusting block (20) is connected with a first adjusting rod (23) which penetrates through the adjusting block (20), the adjusting block (20) is threadedly connected with a first locking piece (31) which is in contact with the first adjusting rod (23); the end of the first adjusting rod (23) is hingedly connected with a second adjusting rod (25) through a second locking piece (24), and the end of the second adjusting rod (25) is rotatably connected with a pressure wheel (26) which is in the shape of a circular truncated cone.

8. The packaging film folding mechanism for a center-seal bag production line according to claim 6, characterized in that: The adjusting pressure plate (19) comprises a pressure plate (27) which is located on the mounting table (16) and is arranged in the shape of a long strip, the pressure plate (27) is provided with a position adjusting waist hole (28) which is arranged along the pressure plate (27); the position adjusting waist hole (28) is provided with a positioning screw (29) which penetrates through the waist hole (17) and the position adjusting waist hole (28) from bottom to top, and the positioning screw (29) is threadedly connected with a locking nut (30) which is located above the pressure plate (27).

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