CN115230240A - Valve bag making machine - Google Patents

Abstract

The invention relates to the technical field of bag making machines, in particular to a valve bag making machine, which comprises a supporting unit for opening a cylindrical bag and a bottom folding unit for folding the bottom edge of the cylindrical bag; the supporting unit comprises a supporting frame, the supporting frame is used for supporting the bag body, two ends of the supporting frame are respectively and rotatably connected with a trapezoidal plate assembly used for sleeving the guide cylindrical bag on the supporting frame and limiting two long edges of the bag bottom, and a first driving piece used for driving the trapezoidal plate assembly is arranged in the supporting frame; the bottom folding unit comprises a length folding mechanism and a width folding mechanism, and when the bag making machine carries out bottom folding operation, the width folding mechanism folds and shapes the wide edge; after broadside fifty percent discount design is ended, inside first driving piece drive trapezoidal plate subassembly moved to the support frame, the fifty percent discount of book long mechanism to long limit fifty percent discount design, has avoided the manual work to the folding process at the bottom of the bag, has effectively improved work efficiency.

Description

Valve bag making machine

Technical Field

The invention relates to the technical field of bag making machines, in particular to a valve bag making machine.

Background

The valve bag, commonly called a bottom pasting bag, is an international popular packaging bag, is fed from a top or bottom valve port, adopts special filling equipment, is filled with materials to form a square body, is orderly stacked and attractive, belongs to an environment-friendly bag, and comprises a bag body, a bag bottom, two long edges and two wide edges, wherein the two long edges and the two wide edges are positioned at one end of the bag bottom.

In order to facilitate the stacking of the valve bag, the bottom of the valve bag is generally designed to be square; generally among the prior art is after the heat-seal of single-deck bag body is the tube-shape bag, and two long limits and two broadsides of rethread manual folding valve port bag are folding, and this kind of working method through the square end of manual folding valve port bag is efficient lower, and consuming time and power.

Disclosure of Invention

Solves the technical problem

Aiming at the defects in the prior art, the invention provides a valve bag making machine which is arranged in the invention.

Technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a bag making machine for a valve bag comprises a supporting unit for expanding a cylindrical bag and a bottom folding unit for folding the bottom edge of the cylindrical bag;

the supporting unit comprises a supporting frame, the supporting frame is used for supporting the bag body, two ends of the supporting frame are respectively and rotatably connected with a trapezoidal plate assembly which is used for guiding the cylindrical bag to be sleeved on the supporting frame and limiting two long edges of the bag bottom, and a first driving piece used for driving the trapezoidal plate assembly is arranged in the supporting frame;

the bottom folding unit comprises a length folding mechanism and a width folding mechanism, the length folding mechanism comprises a first long-edge folded plate, a second long-edge folded plate and a length folding driving device for driving the first long-edge folded plate and the second long-edge folded plate to move, the width folding mechanism comprises a first broadside folded plate, a second broadside folded plate and a width folding driving device for driving the first broadside folded plate and the second broadside folded plate to move, the first long-edge folded plate and the second long-edge folded plate are arranged on two sides of a long edge, and the first broadside folded plate and the second broadside folded plate are symmetrically arranged on two sides of a broadside;

when the bag making machine carries out bottom folding operation, the width folding driving device drives the first broadside folded plate and the second broadside folded plate to fold and shape broadsides; after the broadside fifty percent discount is finalized the design, inside first driving piece drive trapezoidal plate subassembly moved to the support frame, the long limit of the first long limit folded plate of drive of book and second folded plate pair long limit fifty percent discount is finalized the design.

Furthermore, the valve bag making machine further comprises a feeding unit, wherein the feeding unit comprises a conveying belt, a second electric push rod, a third electric push rod, a lower suction plate and an upper suction plate arranged in parallel with the lower suction plate, the second electric push rod and the third electric push rod are respectively used for driving the lower suction plate and the upper suction plate to move along the direction perpendicular to the conveying belt, the conveying belt is used for conveying the tubular bag to the position right below the upper suction plate, and the upper suction plate and the lower suction plate are used for opening the tubular bag.

Furthermore, the feeding unit further comprises a first electric guide rail device and a second electric guide rail device, the upper suction plate and the lower suction plate respectively move along the first electric guide rail device and the second electric guide rail device, and the bag body of the cylindrical bag is sleeved on the support frame.

Further, the long limit folded plate outside of second is provided with respectively spouts mucilage binding and spouts the gluey hole, the one end of the long limit folded plate of second is provided with spouts gluey switch, and when extrudeing between the long limit folded plate of first long limit folded plate and the long limit folded plate of second, the gluey switch is spouted in the extrusion of first long limit folded plate for glue in spouting the mucilage binding is from spouting gluey hole blowout, and spout to one side on long limit.

Further, one side of rolling over end unit is equipped with the protection casing that is used for sheltering from and rolls over end unit, the inboard of protection casing is provided with the long limit that is used for spouting glue and does not spout the long bound bonding unit that has glue, the second driving piece that the unit includes the push pedal and is used for driving the push pedal motion of laminating.

Further, the support frame is equipped with the spout, trapezoidal plate subassembly includes first trapezoidal plate and second trapezoidal plate, the spout is used for carrying on spacingly to first trapezoidal plate and second trapezoidal plate, the inside one side of support frame is provided with the adjustment mechanism who is used for adjusting first trapezoidal plate and second trapezoidal plate angle.

Furthermore, the first long-edge folded plate is L-shaped, and the second long-edge folded plate is positioned below the shorter end of the first long-edge folded plate.

Further, the two sides of the first wide side folded plate and the second wide side folded plate are wedge-shaped surfaces.

Furthermore, the supporting unit further comprises a first base, and a rotating mechanism for driving the supporting frame to rotate is arranged on the first base.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

1. according to the invention, the first wide-edge folded plate and the second wide-edge folded plate are driven by the width folding driving device to fold and shape the wide edges, after the folding and shaping of the wide edges are finished, the trapezoid plate assembly is driven by the first driving part to move into the supporting frame, and the first long-edge folded plate and the second long-edge folded plate are driven by the length folding driving device to fold and shape the long edges, so that the process of manually folding the bottom is avoided, and the working efficiency is effectively improved.

2. According to the invention, when the sleeve-shaped bag is arranged on the support frame through the adjusting mechanism, the angles of the first trapezoidal plate and the second trapezoidal plate are adjusted, so that the first trapezoidal plate and the second trapezoidal plate can guide the sleeve-shaped bag, the sleeve-shaped bag is conveniently sleeved on the support frame, and the reliability of the sleeve-shaped bag filling process is effectively improved.

3. According to the invention, when the wide edge of the bag bottom is folded by the width folding mechanism, the long edge of the bag bottom is limited by the first trapezoidal plate and the second trapezoidal plate, so that the reliability of the wide edge bottom folding process is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic view of the overall structure of a valve bag making machine according to the present invention;

FIG. 2 is a schematic view of the overall structure of a valve bag making machine with a protective cover removed;

FIG. 3 is a top view of the folding bottom unit and the supporting frame unit provided by the present invention;

FIG. 4 is a structural diagram of the bottom folding unit and the support unit provided by the present invention;

FIG. 5 is a block diagram of a cradle unit provided by the present invention;

FIG. 6 is a block diagram of a support unit provided in the present invention;

FIG. 7 is a cross-sectional view of a support unit provided by the present invention;

FIG. 8 is a block diagram of a pusher plate provided by the present invention;

FIG. 9 is an enlarged view of area A of FIG. 2;

FIG. 10 is an enlarged view of area B of FIG. 6;

FIG. 11 is an enlarged view of area C of FIG. 7;

fig. 12 is an enlarged view of the area D in fig. 7.

The reference numerals in the drawings denote: 1. a supporting unit; 11. a support frame; 111. a chute; 12. a trapezoidal plate assembly; 113. a separation block; 1131. a movable groove; 121. a first trapezoidal plate; 1211. a rotating groove; 1212. a slider; 1213. a fifth gear; 122. a second trapezoidal plate; 13. a first driving member; 131. a first electric push rod; 132. connecting blocks; 133. a first connecting rod; 134. a second connecting rod; 14. a first base; 15. a rotating mechanism; 151. a third motor; 152. a third rotating shaft; 16. an adjustment mechanism; 161. a Y-shaped bar; 162. extruding the block; 163. a slide rail; 164. a telescopic rod; 165. a spring; 166. a stress beam; 167. a trigger lever; 2. a bottom folding unit; 21. a folding mechanism; 211. a first long side folded plate; 212. a second long-side folded plate; 213. a folding drive device; 2131. a first L-shaped rack; 2132. a first gear; 2133. a first rotating shaft; 2134. a second gear; 2135. a first rack; 2136. a fourth electric push rod; 2137. a first slide bar; 2138. a second L-shaped rack; 2139. a second slide bar; 22. a width folding mechanism; 221. a first broadside folded plate; 222. a second broadside folded plate; 223. a width folding driving device; 2231. a first C-shaped bar; 2232. a second rack; 2233. a second rotating shaft; 2234. a third gear; 2235. a fourth gear; 2236. a fourth rack; 2237. a third rack; 2238. a second C-shaped bar; 2239. a fifth electric push rod; 3. a feeding unit; 31. a conveyor belt; 32. a lower suction plate; 321. a second electric push rod; 322. a first thread block; 33. an upper suction plate; 331. a third electric push rod; 332. a second screw block; 34. a first motorized track arrangement; 341. a first rail bracket; 342. a first motor; 343. a first screw; 35. a second electrically powered rail arrangement; 351. a second guide rail bracket; 352. a second motor; 353. a second screw; 36. a sixth support; 4. a glue spraying device; 41. spraying glue holes; 42. a glue spraying switch; 5. a protective cover; 51. a material taking port; 6. a bonding unit; 61. a second driving member; 611. a sixth electric push rod; 62. pushing a plate; 7. a holder unit; 71. a second base; 72. a cylindrical support; 73. a first bracket; 74. a second bracket; 75. a first carriage; 76. a fifth support; 77. a second carriage; 78. a third support; 79. and a fourth bracket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

The embodiment is as follows:

the embodiment provides a valve bag making machine, and referring to fig. 1-12: comprises a supporting unit 1 for expanding the cylindrical bag, a bottom folding unit 2 for folding the bottom edge of the cylindrical bag, a bracket unit 7 for fixing the bottom folding unit 2, and a feeding unit 3 for sleeving the cylindrical bag on the bottom folding unit 2; wherein the supporting unit 1 includes the support frame 11, the support frame 11 is used for supporting the bag body, spout 111 has been seted up to the lateral wall of support frame 11, the inside block of spout 111 has slider 1212, the both ends of support frame 11 rotate respectively to be connected with and are used for guiding the tube-shape bag cover and carry out spacing trapezoidal plate subassembly 12 on two long limits at the bottom of the bag on the support frame 11, wherein trapezoidal plate subassembly 12 includes first trapezoidal plate 121 and second trapezoidal plate 122, first trapezoidal plate 121 and second trapezoidal plate 122 are connected through the axle rotation mode between respectively and the slider 1212.

The first driving member 13 for driving the trapezoidal plate assembly 12 is arranged inside the supporting frame 11, wherein the first driving member 13 includes a first electric push rod 131, a connecting block 132 is fixedly ejected at one end of the first electric push rod 131, a first connecting rod 133 is fixed above the connecting block 132, a second connecting rod 134 is fixed below the connecting block 132, a rotation groove 1211 is formed in one side of each of the first trapezoidal plate 121 and the second trapezoidal plate 122, one ends of the first connecting rod 133 and the second connecting rod 134 are rotatably connected in the rotation groove 1211, the first connecting rod 133 and the second connecting rod 134 can drive the first trapezoidal plate 121 and the second trapezoidal plate 122 to move along the sliding groove 111 through the first electric push rod 131 without affecting the rotation of the first trapezoidal plate 121 and the second trapezoidal plate 122.

As shown in fig. 5, the support unit 7 includes a second base 71, a first support 73 and a second support 74 are symmetrically fixed on an upper end surface of the second base 71, a third support 78, a fourth support 79 and a cylindrical support 72 are further fixed on an upper end surface of the second base 71, the third support 78 is located between the first support 73 and the second support 74, the fourth support 79 is located on one side of the third support 78, the cylindrical support 72 is located at one end of the second base 71, a first sliding frame 75 and a second sliding frame 77 are fixed on one ends of the first support 73 and the second support 74, and a fifth support 76 is fixed on one end of the second sliding frame 77 parallel to the second base 71.

The bottom folding unit 2 comprises a folding mechanism 21 and a width folding mechanism 22, wherein the folding mechanism 21 comprises a first long-edge folded plate 211, a second long-edge folded plate 212 and a folding driving device 213 for driving the first long-edge folded plate 211 and the second long-edge folded plate 212 to move.

Specifically, as shown in fig. 9, the folding-length driving device 213 includes a first L-shaped rack 2131, a first rotating shaft 2133, a first sliding rod 2137 and a second sliding rod 2139, a shorter end of the first L-shaped rack 2131 is fixed to the first long-side folded plate 211, two second sliding rods 2139 are fixed to two sides of a longer end of the first L-shaped rack 2131, one ends of the two second sliding rods 2139 are respectively connected to the two first sliding racks 75 in a sliding manner, and the two first sliding racks 75 are used for limiting the first L-shaped rack 2131.

Further, the first rotating shaft 2133 is rotatably connected between the two fifth brackets 76, one end of each of the two first sliding rods 2137 is slidably connected to each of the two second sliding frames 77, the other end of each of the two first sliding rods 2137 is fixed to the second L-shaped rack 2138, and the two second sliding frames 77 are used for limiting the position of the second L-shaped rack 2138.

Further, one end of a second L-shaped rack 2138 is fixed to the second long side flap 212, a first gear 2132 is fixed to the outer wall of the first rotating shaft 2133 and located at the middle position, the first gear 2132 is meshed with the second L-shaped rack 2138, a second gear 2134 is fixed to the outer wall of the first rotating shaft 2133, the second gear 2134 is located on one side of the first gear 2132, a fourth electric push rod 2136 is fixed to one end of the fourth support 79, a first rack 2135 is fixed to one end of the fourth electric push rod 2136, the first rack 2135 is meshed with the second gear 2134, the fourth electric push rod 2136 is used for driving the first rack 2135 to move up and down, the first rack 2135 drives the second gear 2134 to rotate forward and backward, the second gear 2134 drives the first rotating shaft 2133 to rotate forward and backward, the first gear 2132 drives the first L-shaped rack 2131 and the second L-shaped rack 2138 to move up and down, the first L-shaped rack 2131 drives the first long side flap 2131 to move up and down, and drive the second long side flap 2138 to move up and down, and release the second long side flap 2136 to move up and release the second long side.

Specifically, the width folding mechanism 22 includes a first broadside flap 221, a second broadside flap 222, and a width folding driving device 223 for driving the first broadside flap 221 and the second broadside flap 222 to move, the first long-side flap 211 and the second long-side flap 212 are disposed on both sides of the long side, and the first broadside flap 221 and the second broadside flap 222 are symmetrically disposed on both sides of the broadside.

Further, the width folding driving device 223 includes a first C-shaped rod 2231, a second C-shaped rod 2238, a second rack 2232 and a third rack 2237, two ends of the first C-shaped rod 2231 are slidably connected to the first bracket 73, the second rack 2232 is fixed to one end of the first C-shaped rod 2231, the second broadside flap 222 is fixed to the other end of the first C-shaped rod 2231, two ends of the second C-shaped rod 2238 are slidably connected to the second bracket 74, the third rack 2237 is fixed to one end of the second C-shaped rod 2238, and the first broadside flap 221 is fixed to the other end of the second C-shaped rod 2238.

Further, the third support 78 is rotatably connected with a second rotating shaft 2233, a third gear 2234 and a fourth gear 2235 are fixed on an outer wall of the second rotating shaft 2233, the third gear 2234 is respectively engaged with a second rack 2232 and a third rack 2237, a fifth electric push rod 2239 is fixed in the cylindrical support 72, a fourth rack 2236 is fixed at one end of the fifth electric push rod 2239, the fourth rack 2236 is engaged with the fourth gear 2235, the fifth electric push rod 2239 is used for driving the fourth rack 2236 to move left and right (with reference directions in fig. 9), the fourth rack 2236 drives the fourth gear 2235 to rotate forward and reverse, the second rotating shaft 2233 drives the third gear 2234 to rotate forward and reverse, the third gear 2234 drives the second rack 2232 and the third rack 2237 to move left and right, the second rack 2232 drives the second C-shaped rod 2238 to move left and right, the second C-shaped rod 2238 drives the first broadside folding plate 221, the third rack 2237 drives the first wide-shaped rod 2231 to move left and right, and releases the first wide-shaped folded plate 222.

When the bag making machine carries out bottom folding operation, the width folding driving device 223 drives the first wide edge folding plate 221 and the second wide edge folding plate 222 to fold and shape wide edges; after the broadside folding and sizing are finished, the first driving piece 13 drives the trapezoidal plate assembly 12 to move to the inside of the support frame 11, the folding-length driving device 213 drives the first long-edge folded plate 211 and the second long-edge folded plate 212 to fold and size the long edges, the manual bottom folding process is avoided, and the working efficiency is effectively improved.

The feeding unit 3 comprises a conveyer belt 31, a second electric push rod 321, a third electric push rod 331, a lower suction plate 32 and an upper suction plate 33 arranged in parallel with the lower suction plate 32, the second electric push rod 321 and the third electric push rod 331 are respectively used for driving the lower suction plate 32 and the upper suction plate 33 to move along the direction vertical to the conveyer belt 31, the conveyer belt 31 is used for conveying the tubular bags to the position right below the upper suction plate 33, the upper suction plate 33 and the lower suction plate 32 are used for expanding the tubular bags, a first thread block 322 is fixed at one end of the second electric push rod 321, and a second thread block 332 is fixed at one end of the third electric push rod 331.

Further, the feeding unit 3 further comprises a first electric rail device 34 and a second electric rail device 35; the first electric guide rail device 34 includes a first guide rail frame 341, one end of the first guide rail frame 341 is fixed with a first motor 342 through a bolt, an output end of the first motor 342 is fixed with a first screw 343, one end of the first screw 343 is rotatably connected to the other end of the first guide rail frame 341, the second screw 332 is connected with the first screw 343 through a threaded connection manner, one end of the conveyor belt 31 is fixedly connected with a sixth bracket 36 through a bolt, the sixth bracket 36 is fixedly connected with the first guide rail frame 341, the forward and reverse rotation of the first motor 342 drives the forward and reverse rotation of the first screw 343, and the second screw 332 moves left and right along the first screw 343 (with reference direction in fig. 1, the same applies below); the second electric guide rail device 35 comprises a second guide rail frame 351, one end of the second guide rail frame 351 is fixed with a second motor 352 through a bolt, the output end of the second motor 352 is fixed with a second screw 353, one end of the second screw 353 is rotatably connected with the other end of the second guide rail frame 351, the first screw block 322 is connected with the second screw 353 through a threaded connection mode, the second motor 352 rotates forward and backward to drive the second screw 353 to rotate forward and backward, and the first screw block 322 moves left and right along the second screw 353; the first motor 342 and the second motor 352 respectively drive the upper suction plate 33 and the lower suction plate 32 to respectively move along the conveying direction of the conveying belt 31, and the bag body of the cylindrical bag is sleeved on the support frame 11.

As shown in fig. 4, the glue spraying device 4 is disposed on one side of the second long-side folded plate 212, the glue spraying hole 41 is disposed on the other side of the second long-side folded plate 212, the glue spraying switch 42 is disposed on the upper end face of one end of the second long-side folded plate 212, and when the first long-side folded plate 211 and the second long-side folded plate 212 are squeezed, the glue spraying switch 42 is squeezed by the first long-side folded plate 211, so that glue in the glue spraying device 4 is sprayed out from the glue spraying hole 41 and is sprayed to one side of the long side below the bottom of the bag.

One side of folding end unit 2 is equipped with the protection casing 5 that is used for sheltering from folding end unit 2, the material mouth 51 of getting that is used for the bag body after the end completion of will folding is offered to one side of protection casing 5, the inboard of protection casing 5 is provided with and is used for the long limit that will spout glue with the long limit adhesive laminating unit 6 that does not spout glue, laminating unit 6 includes push pedal 62 and the second driving piece 61 that is used for driving push pedal 62 motion, as shown in fig. 9, push pedal 62 is located between first long limit folded plate 211 and the second slide bar 2139, second driving piece 61 includes sixth electric putter 611, after two long limit folded ends of bag end are finalized to the design when first long limit folded plate 211 and the long limit folded plate 212 of second are accomplished, drive push pedal 62 through sixth electric putter 611 and laminate two long limits, realize glue with two long limits bonding, the artifical rubber coating has been avoided pasting, the effectual work efficiency that has improved, the labour has been reduced.

An adjusting mechanism 16 for adjusting the angles of the first trapezoidal plate 121 and the second trapezoidal plate 122 is arranged on one side inside the support frame 11, the adjusting mechanism 16 comprises a sliding rail 163, the sliding rail 163 is fixed on one side of the inner wall of the support frame 11, a Y-shaped rod 161 is connected in the sliding rail 163 in a sliding manner, the sliding rail 163 is used for limiting the Y-shaped rod 161, two branched tail ends of one end of the Y-shaped rod 161 are provided with tooth openings, a fifth gear 1213 is fixed on the outer wall of one end of the connecting shaft between the first trapezoidal plate 121 and the second trapezoidal plate 122 and the sliding block 1212 respectively, the fifth gear 1213 is meshed with the tooth openings of the two branched tail ends of one end of the Y-shaped rod 161, an extrusion block 162 is fixed on the Y-shaped rod 161, an expansion rod 164 is fixed between the extrusion block 162 and the slide rail 163, a spring 165 is sleeved on the outer wall of the expansion rod 164, a separation block 113 is fixed in the middle of the support frame 11, the separation block 113 is used for separating the support frame 11 into two identical parts, so that one side of the support frame 11 is folded at the bottom, the other side of the support frame 11 is sleeved with bags, the working efficiency is improved, movable grooves 1131 are formed in two sides of one end of the separation block 113, a stress rod 166 is placed in the movable grooves 1131, one end of the stress rod 166 is fixedly connected with the Y-shaped rod 161, and a trigger rod 167 is fixed on one side of the upper suction plate 33; when the sleeve-shaped bag is supplied to the support frame 11 through the upper suction plate 33 and the lower suction plate 32, the trigger rod 167 presses the stress rod 166, as shown in fig. 11 and 12, the stress rod 166 moves from the left side of the movable groove 1131 to the right side of the movable groove 1131, the stress rod 166 drives the Y-shaped rod 161 to move to the right side, the Y-shaped rod 161 drives the fifth gear 1213 above to rotate counterclockwise, the Y-shaped rod 161 drives the fifth gear 1213 below to rotate clockwise, the fifth gear 1213 above drives the first trapezoidal plate 121 to rotate counterclockwise, the fifth gear 1213 below drives the second trapezoidal plate 122 to rotate clockwise, at this time, the first trapezoidal plate 121 and the second trapezoidal plate 122 deflect to the inner side of the support frame 11, so that the guide function for the sleeve-shaped bag is conveniently sleeved on the support frame 11.

Meanwhile, the stress rod 166 positioned on one side of the bottom folding unit 2 is not extruded by the trigger rod 167, and under the restoring force of the spring 165, the first trapezoidal plate 121 and the second trapezoidal plate 122 reset and play a limiting role on two long edges of the bag bottom, so that the limitation on the long edges when the wide edges are folded is avoided, and the wide edges are not beneficial to folding the bottom.

The first long side flap 211 is L-shaped, the second long side flap 212 is positioned below the shorter end of the first long side flap 211, and the first wide side flap 221 and the second wide side flap 222 are wedge-shaped on both sides.

The supporting unit 1 further includes a first base 14, a rotating mechanism 15 for driving the supporting frame 11 to rotate is arranged on the first base 14, the rotating mechanism 15 includes a third motor 151, the third motor 151 is fixed in the first base 14, an output end of the third motor 151 is fixed with a third rotating shaft 152 through a coupling, one end of the third rotating shaft 152 is fixed with the supporting frame 11, after the bag bottom at one end of the supporting frame 11 is folded, the bag body at the other end of the supporting frame 11 is sleeved, as shown in fig. 1, the third motor 151 drives the third rotating shaft 152 to rotate ninety degrees counterclockwise, the third rotating shaft 152 drives the supporting frame 11 to rotate ninety degrees counterclockwise, the bag body after the folded bottom is taken down from the material taking port 51, then the third motor 151 continues to drive the supporting frame 11 to rotate ninety degrees counterclockwise and then stops, and starts the bottom folding and bagging work again.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A valve bag making machine is characterized in that: comprises a supporting unit (1) for expanding the cylindrical bag and a bottom folding unit (2) for folding the bottom edge of the cylindrical bag;

the supporting unit (1) comprises a supporting frame (11), the supporting frame (11) is used for supporting a bag body, two ends of the supporting frame (11) are respectively and rotatably connected with a trapezoidal plate assembly (12) which is used for guiding the cylindrical bag to be sleeved on the supporting frame (11) and limiting two long edges of the bag bottom, and a first driving piece (13) used for driving the trapezoidal plate assembly (12) is arranged in the supporting frame (11);

the bottom folding unit (2) comprises a length folding mechanism (21) and a width folding mechanism (22), the length folding mechanism (21) comprises a first long-edge folded plate (211), a second long-edge folded plate (212) and a length folding driving device (213) for driving the first long-edge folded plate (211) and the second long-edge folded plate (212) to move, and the width folding mechanism (22) comprises a first wide-edge folded plate (221), a second wide-edge folded plate (222) and a width folding driving device (223) for driving the first wide-edge folded plate (221) and the second wide-edge folded plate (222) to move;

when the bottom folding operation is carried out by the bag making machine, a width folding driving device (223) drives a first wide edge folded plate (221) and a second wide edge folded plate (222) to fold and shape the wide edges; after the folding and sizing of the wide edges are finished, the first driving piece (13) drives the trapezoidal plate assembly (12) to move into the support frame (11), and the folding and length driving device (213) drives the first long edge folded plate (211) and the second long edge folded plate (212) to fold and size the long edges.

2. The valve bag making machine according to claim 1, further comprising a feeding unit (3), wherein the feeding unit (3) comprises a conveying belt (31), a second electric push rod (321), a third electric push rod (331), a lower suction plate (32) and an upper suction plate (33) arranged in parallel with the lower suction plate (32), the second electric push rod (321) and the third electric push rod (331) are respectively used for driving the lower suction plate (32) and the upper suction plate (33) to move along a direction vertical to the conveying belt (31), the conveying belt (31) is used for conveying the cylindrical bag to a position right below the upper suction plate (33), and the upper suction plate (33) and the lower suction plate (32) are used for expanding the cylindrical bag.

3. The valve bag making machine according to claim 2, wherein said feeding unit (3) further comprises a first electric rail device (34) and a second electric rail device (35), said upper suction plate (33) and said lower suction plate (32) move along said first electric rail device (34) and said second electric rail device (35), respectively, and sleeve the bag body of the cylindrical bag on said support frame (11).

4. The valve bag making machine according to claim 1, wherein the second long-side folded plate (212) is provided with a glue spraying device (4) and a glue spraying hole (41) at the outer side, the glue spraying switch (42) is arranged at one end of the second long-side folded plate (212), and when the first long-side folded plate (211) and the second long-side folded plate (212) are squeezed together, the glue spraying switch (42) is squeezed by the first long-side folded plate (211), so that the glue in the glue spraying device (4) is sprayed out from the glue spraying hole (41) and to one side of the long side.

5. The bag making machine for the valve bag according to claim 1, wherein a protective cover (5) for shielding the bottom folding unit (2) is arranged on one side of the bottom folding unit (2), an attaching unit (6) for attaching the long edge sprayed with the glue to the long edge not sprayed with the glue is arranged on the inner side of the protective cover (5), and the attaching unit (6) comprises a push plate (62) and a second driving member (61) for driving the push plate (62) to move.

6. The bag making machine for the valve bags according to claim 1, wherein the supporting frame (11) is provided with a sliding groove (111), the trapezoidal plate assembly (12) comprises a first trapezoidal plate (121) and a second trapezoidal plate (122), the sliding groove (111) is used for limiting the first trapezoidal plate (121) and the second trapezoidal plate (122), and an adjusting mechanism (16) for adjusting the angles of the first trapezoidal plate (121) and the second trapezoidal plate (122) is arranged on one side of the inside of the supporting frame (11).

7. The valve bag making machine of claim 4, wherein said first long side flap (211) is L-shaped and said second long side flap (212) is positioned below the shorter end of the first long side flap (211).

8. The valve bag machine of claim 1, wherein the first broadside flap (221) and the second broadside flap (222) are wedge-shaped on both sides.

9. The valve bag making machine according to claim 1, wherein said supporting unit (1) further comprises a first base (14), said first base (14) being provided with a rotating mechanism (15) for driving the supporting frame (11) to rotate.

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