U-shaped handle forming device and bag body forming machine

Abstract

The invention aims at disclosing a U-shaped handle forming device and a bag body forming machine, and relates to the technical field of bag body forming, the U-shaped handle forming device comprises a flat rope guide-in assembly and a flat rope forming assembly; the flat rope leading-in assembly comprises an arc-shaped plate, and a first tip and a second tip which swing back and forth along the arc-shaped plate; the flat rope forming assembly comprises a flat rope clamping assembly, a flat rope folding assembly and a flat rope guiding assembly. The flat rope clamping assembly comprises a first clamping jaw, a second clamping jaw, a first arc-shaped adsorption part and a second arc-shaped adsorption part; the first forming sheet is matched with the first groove, and the second forming sheet is matched with the second groove; the device has the beneficial effects that the flat rope is clamped by the first clamping jaw and the second clamping jaw; the first forming piece is matched with the first groove to form a tilted first side handle, and the second forming piece is matched with the second groove to form a tilted second side handle. The first side handle is guided by the first arc-shaped guide plate and adsorbed to the first arc-shaped adsorption part, the second side handle is guided by the second arc-shaped guide plate and adsorbed to the second arc-shaped adsorption part, and the forming efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of bag forming, and in particular to a U-shaped handle forming device and a bag forming machine. Background Art

[0002] At present, during the bag forming process, some bags need to be equipped with handles. The handles are made of long flat ropes. The long flat ropes need to be prepared into U-shaped handles. How to efficiently prepare U-shaped handles is a technical problem that needs to be overcome.

[0003] In view of this, there is an urgent need to develop a U-shaped handle forming device and a bag forming machine to overcome the defects of the prior art. Summary of the invention

[0004] The purpose of the present invention is to disclose a U-shaped handle forming device and a bag forming machine.

[0005] To achieve the above first invention objective, the present invention provides a U-shaped handle forming device, comprising a flat rope introduction assembly and a flat rope forming assembly;

[0006] The flat rope introduction assembly includes an arc-shaped plate and a first tip and a second tip that reciprocate along the arc-shaped plate;

[0007] The flat rope forming assembly includes a flat rope clamping assembly, a flat rope folding assembly and a flat rope guiding assembly;

[0008] The two flat rope clamping assemblies are symmetrically arranged on the forming hub, and the flat rope clamping assembly includes a first clamping jaw, a second clamping jaw, a flat rope supporting portion, a first arc-shaped adsorption portion, and a second arc-shaped adsorption portion. The flat rope supporting portion is symmetrically provided with a first groove and a second groove, and the angle between the first groove and the flat rope supporting portion is 45°, and the angle between the second groove and the flat rope supporting portion is 45°;

[0009] The flat rope folding assembly is arranged above the forming hub, and comprises a first rotating shaft and a first fixing block and a second fixing block arranged on the first rotating shaft, a first forming piece is installed on the first fixing block, the first forming piece cooperates with the first groove, and a second forming piece is installed on the second fixing block, the second forming piece cooperates with the second groove;

[0010] The flat rope guide assembly is arranged behind the forming hub, and the flat rope guide assembly includes a first arc-shaped guide plate and a second arc-shaped guide plate;

[0011] The first arc-shaped guide plate guides the formed first side handle to be adsorbed to the first arc-shaped adsorption portion;

[0012] The second arc-shaped guide plate guides the formed second side handle to be adsorbed on the second arc-shaped adsorption portion.

[0013] Preferably, the first clamping jaw and the second clamping jaw are mounted on the second rotating shaft;

[0014] A first swing arm and a first pin are provided at one end of the second rotating shaft. The first pin is driven by a first cam. The first cam drives the first clamping jaw and the second clamping jaw to approach or move away from the flat rope supporting portion through the first pin and the first swing arm.

[0015] Preferably, the first arc-shaped adsorption portion includes a first cavity, and the second arc-shaped adsorption portion includes a second cavity;

[0016] The valve distribution shaft penetrates into the first cavity and the second cavity, and the valve distribution shaft is driven by the second cam;

[0017] A first air hole is provided in the first cavity, a second air hole is provided in the second cavity, and a third air hole and a fourth air hole are provided in the gas distribution shaft;

[0018] When the second cam drives the valve shaft to move, the third air hole is aligned with the first air hole, and the fourth air hole is aligned with the second air hole;

[0019] When the second cam drives the valve shaft to return, the third air hole avoids the first air hole, and the fourth air hole avoids the second air hole.

[0020] Preferably, the first tip and the second tip are inserted into a flat rope and drive the flat rope to move along the arc plate to the end of the arc plate;

[0021] The first clamping jaw and the second clamping jaw clamp the flat rope to the flat rope supporting portion;

[0022] Under the cooperation of the forming hub and the flat rope folding assembly, the first forming piece is inserted into the first groove and causes the first side handle to tilt up, and the second forming piece is inserted into the second groove and causes the second side handle to tilt up;

[0023] The forming hub continues to rotate, and the forming hub cooperates with the flat rope guide assembly to adsorb the first side handle and the second side handle to the first arc-shaped adsorption portion and the second arc-shaped adsorption portion respectively.

[0024] Preferably, the flat rope introduction assembly further comprises a support assembly, a first drive assembly and a second drive assembly;

[0025] The support assembly includes a first vertical wall, a second vertical wall and a first shaft, and two ends of the first shaft are rotatably supported on the first vertical wall and the second vertical wall respectively;

[0026] The first driving assembly includes a third cam, a first connecting rod, a second connecting rod, a first swing rod and a second shaft, and the third cam drives the first connecting rod to swing up and down;

[0027] The second connecting rod is in a vertical state or a nearly vertical state, and the first connecting rod drives the second connecting rod to move up and down;

[0028] The second connecting rod drives the first swing rod to swing back and forth, and the first swing rod drives the second shaft to rotate back and forth;

[0029] The end of the first connecting rod is hinged to the outer side wall of the first vertical panel wall, and the first shaft drives the third cam to rotate;

[0030] The third cam drives the first connecting rod to swing up and down through the second pin shaft;

[0031] The second connecting rod is provided with a plurality of holes, and the first connecting rod and the second connecting rod are hinged at one of the holes.

[0032] Preferably, the second driving assembly comprises a plurality of first transmission gears and a cam assembly driven by the first shaft, the cam assembly is rotatably mounted on the second shaft, a second transmission gear is arranged on an outer side wall of the cam assembly, and the first transmission gear meshes with the second transmission gear;

[0033] The cam assembly drives the third shaft to rotate through the second swing rod;

[0034] The driving forces of the first driving assembly and the second driving assembly both come from the first shaft;

[0035] The cam assembly comprises a cam plate and a fourth cam, and the fourth cam is provided with an arc-shaped waist hole.

[0036] Preferably, a first swinging member and a second swinging member are provided on the third shaft;

[0037] A first column is disposed at the end of the first swinging member, a first clamping groove is disposed at the end of the first column, a first thin column is disposed in the first clamping groove, and the first tip is vertically inserted into the first thin column;

[0038] A second column is disposed at the end of the second swinging member, a second clamping groove is disposed at the end of the second column, a second thin column is disposed in the second clamping groove, and the second tip is vertically inserted into the second thin column.

[0039] Preferably, the arc-shaped plate is installed on a flat rope supporting platform, and the flat rope supporting platform is provided with a flat rope accommodating groove.

[0040] Preferably, the arc-shaped plate is provided with a first gap and a second gap, the first tip cooperates with the first gap, and the second tip cooperates with the second gap;

[0041] The first gap is communicated with the flat rope accommodating groove, and the second gap is communicated with the flat rope accommodating groove.

[0042] Based on the same inventive principle, in order to achieve the above-mentioned second inventive object, the present invention provides a bag forming machine, including the U-shaped handle forming device described in the first invention.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] The present invention guides the flat rope into the flat rope supporting part through the first pointed end and the second pointed end, and the flat rope is clamped on the flat rope supporting part by the first clamping claw and the second clamping claw; the first forming piece cooperates with the first groove to form a raised first side handle, and the second forming piece cooperates with the second groove to form a raised second side handle; the first side handle is guided by the first arc-shaped guide plate and adsorbed to the first arc-shaped adsorption part, and the second side handle is guided by the second arc-shaped guide plate and adsorbed to the second arc-shaped adsorption part, thereby realizing the automatic introduction of the flat rope and the formation of a U-shaped handle by the long flat rope, and the forming efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 It is a three-dimensional structural schematic diagram of the U-shaped handle forming device of the present invention.

[0047] Figure 2 It is a three-dimensional structural schematic diagram of the U-shaped handle forming device of the present invention.

[0048] Figure 3 It is a three-dimensional structural schematic diagram of the flat rope clamping assembly of the present invention.

[0049] Figure 4 It is a three-dimensional structural schematic diagram of the flat rope clamping assembly of the present invention.

[0050] Figure 5 It is a three-dimensional structural schematic diagram of the flat rope folding assembly of the present invention.

[0051] Figure 6 It is a three-dimensional structural schematic diagram of the flat rope guide assembly of the present invention.

[0052] Figure 7 It is a three-dimensional structural schematic diagram of the flat rope clamping assembly of the present invention.

[0053] Figure 8 It is a schematic diagram of the exploded structure of the flat rope clamping assembly of the present invention.

[0054] Fig. 9 It is a schematic diagram of the U-shaped handle forming process of the present invention.

[0055] Fig.10 It is a schematic diagram of the motion trajectories of the first tip and the second tip of the present invention.

[0056] Fig.11 It is a three-dimensional structural schematic diagram of the flat rope introduction assembly of the present invention.

[0057] Fig.12 It is a three-dimensional structural schematic diagram of the flat rope introduction assembly of the present invention.

[0058] Fig.13 It is a schematic diagram of the three-dimensional structure of the second driving component of the present invention.

[0059] Fig.14 It is a schematic diagram of the third cam of the present invention.

[0060] Fig.15 2 is a schematic diagram of a fourth cam of the present invention.

[0061] Among them, 1. Flat rope introduction assembly; 11. Arc plate; 111. Flat rope support platform; 112. Flat rope receiving groove; 113. First gap; 114. Second gap; 12. First tip; 13. Second tip; 14. Support assembly; 141. First vertical wall; 142. Second vertical wall; 143. First shaft; 15. First drive assembly; 151. Third cam; 152. First connecting rod; 153. Second connecting rod; 1531. Hole position; 154. First swing rod; 155. First Second shaft; 156, second pin shaft; 16, second driving assembly; 161, first transmission gear; 162, cam assembly; 1621, cam plate; 1622, fourth cam; 1623, arc waist hole; 163, second transmission gear; 164, second swing rod; 165, third shaft; 166, second pin shaft; 167, first swing member; 1671, first column; 1672, first clamping groove; 1673, first thin column; 168, second swing member; 1681, second column; 168 2. Second clamping groove; 1683. Second thin column; 2. Flat rope forming assembly; 21. Flat rope clamping assembly; 211. First clamping jaw; 212. Second clamping jaw; 213. Flat rope supporting part; 2131. First groove; 2132. Second groove; 214. First arc-shaped adsorption part; 2141. First cavity; 2142. Gas distribution shaft; 2143. Second cam; 2144. First air hole; 2145. Third air hole; 2146. Fourth air hole; 215. Second arc-shaped adsorption part; 2151. First Two cavities; 2152, second air hole; 216, second rotating shaft; 217, first swing arm; 218, first pin shaft; 219, first cam; 22, flat rope folding assembly; 221, first rotating shaft; 222, first fixed block; 223, second fixed block; 224, first forming sheet; 225, second forming sheet; 23, flat rope guide assembly; 231, first arc-shaped guide plate; 232, second arc-shaped guide plate; 3, forming hub; 4, flat rope; 41, first side handle; 42, second side handle. DETAILED DESCRIPTION

[0062] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] The specific implementation process of the present invention is described below through multiple embodiments.

[0065] Example 1

[0066] See also Figures 1 to 15 This embodiment discloses a specific implementation of a U-shaped handle forming device.

[0067] See also Figures 1 to 15 , a U-shaped handle forming device, comprising a flat rope introduction component 1 and a flat rope forming component 2; the flat rope introduction component 1 comprises an arc plate 11 and a first tip 12 and a second tip 13 that swing back and forth along the arc plate 11; the flat rope forming component 2 comprises a flat rope clamping component 21, a flat rope folding component 22 and a flat rope guiding component 23; the two flat rope clamping components 21 are symmetrically arranged on the forming hub 3, the flat rope clamping component 21 comprises a first clamping jaw 211, a second clamping jaw 212, a flat rope supporting portion 213, a first arc-shaped adsorption portion 214 and a second arc-shaped adsorption portion 215, and a first groove 2131 and a second groove 2132 are symmetrically arranged on the flat rope supporting portion 213, the angle between the first groove 2131 and the flat rope supporting portion 213 is 45°, and the angle between the second groove 2132 and the flat rope supporting portion 213 is 45°; the flat rope folding component 22 is arranged Above the forming hub 3, the flat rope folding assembly 22 includes a first rotating shaft 221 and a first fixed block 222 and a second fixed block 223 arranged on the first rotating shaft 221; the first forming piece 224 is installed on the first fixed block 222, and the first forming piece 224 cooperates with the first groove 2131; the second forming piece 225 is installed on the second fixed block 223, and the second forming piece 225 cooperates with the second groove 2132; the flat rope guide assembly 23 is arranged at the rear of the forming hub 3, and the flat rope guide assembly 23 includes a first arc guide plate 231 and a second arc guide plate 232; the first arc guide plate 231 guides the first side handle 41 after forming to be adsorbed on the first arc adsorption portion 214; the second arc guide plate 232 guides the second side handle 42 after forming to be adsorbed on the second arc adsorption portion 215.

[0068] Specifically, see Fig. 9 and Fig.10 The purpose of this embodiment is to insert the flat rope 4 through the first tip 12 and the second tip 13 and send the flat rope 4 along the arc plate 11 to the flat rope clamping assembly 21, and then the first forming piece 224 cooperates with the first groove 2131 to form a raised first side handle 41, and the second forming piece 225 cooperates with the second groove 2132 to form a raised second side handle 42; the first side handle 41 is guided by the first arc guide plate 231 and adsorbed to the first arc adsorption part 214, and the second side handle 42 is guided by the second arc guide plate 232 and adsorbed to the second arc adsorption part 215, thereby realizing the automatic introduction of the flat rope 4 and the formation of a U-shaped handle by the long flat rope, with high forming efficiency.

[0069] See also Figures 1 to 10 The working process of the U-shaped handle forming device is as follows: in the first step, the flat rope 4 is placed in the flat rope receiving groove 112, the first tip 12 and the second tip 13 are inserted into the flat rope 4 and drive the flat rope 4 to move along the arc plate 11 to the end of the arc plate 11 and be clamped by the first clamp 211 and the second clamp 212; in the second step, the first clamp 211 and the second clamp 212 clamp the flat rope 4 to the flat rope supporting portion 213; in the third step, under the cooperation of the forming hub 3 and the flat rope folding assembly 22, the first forming sheet 224 is inserted into the first groove 2131 and the first side handle 4 is folded. 1 is tilted up, the second molding sheet 225 is inserted into the second groove 2132 and the second side handle 42 is tilted up; in the fourth step, the molding hub 3 continues to rotate, the molding hub 3 and the flat rope guide assembly 24 cooperate, the first arc-shaped guide plate 231 guides the first side handle 41 after molding to be adsorbed on the first arc-shaped adsorption portion 214, and the second arc-shaped guide plate 232 guides the second side handle 42 after molding to be adsorbed on the second arc-shaped adsorption portion 215, that is, the first side handle 41 and the second side handle 42 are respectively adsorbed on the first arc-shaped adsorption portion 214 and the second arc-shaped adsorption portion 215 to form a U-shaped handle.

[0070] See also Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 8The working principle of the flat rope clamping assembly 21 is as follows: the first clamping jaw 211 and the second clamping jaw 212 are installed on the second rotating shaft 216; a first swing arm 217 and a first pin shaft 218 are arranged at one end of the second rotating shaft 216, and the first pin shaft 218 is driven by a first cam 219, and the first cam 219 drives the first clamping jaw 211 and the second clamping jaw 212 to approach or move away from the flat rope supporting portion 213 through the first pin shaft 218 and the first swing arm 217, and the first clamping jaw 211 and the second clamping jaw 212 clamp the flat rope 4 when they approach the flat rope supporting portion 213 synchronously, and release the flat rope 4 when the first clamping jaw 211 and the second clamping jaw 212 move away from the flat rope supporting portion 213 synchronously; the first arc-shaped adsorption portion 214 includes a first cavity 2141, and the second arc-shaped adsorption portion 215 includes a second cavity 2141, and the gas distribution shaft 2142 penetrates the first cavity 2141 and the second cavity 2151, and the gas distribution shaft 2142 is driven by the second cam 2143 The first cavity 2141 is provided with a first air hole 2144, the second cavity 2151 is provided with a second air hole 2152, and the gas distribution shaft 2142 is provided with a third air hole 2145 and a fourth air hole 2146; when the second cam 2143 drives the gas distribution shaft 2142 to move, the third air hole 2145 is aligned with the first air hole 2144, and the fourth air hole 2146 is aligned with the second air hole 2152, so that ventilation is achieved, and the first cavity 2141 and the second The cavity 2151 is at negative pressure, so that the arc surface of the first arc-shaped adsorption part 214 and the arc surface of the second arc-shaped adsorption part 215 are in a negative pressure state at the same time, so as to adsorb the first side handle 41 and the second side handle 42; when the second cam 2143 drives the gas distribution shaft 2142 to return, the third air hole 2145 avoids the first air hole 2144, and the fourth air hole 2146 avoids the second air hole 2152, so as to achieve air sealing, and the first cavity 2141 and the second cavity 2151 are at normal pressure.

[0071] See also Figures 11 to 15The working principle of the flat rope introduction component 1 is as follows: the flat rope introduction component 1 includes an arc plate 11, a first tip 12, a second tip 13, a support component 14, a first drive component 15 and a second drive component 16; the arc plate 11 is installed on a flat rope support platform 111, the flat rope support platform 111 is provided with a flat rope receiving groove 112, the arc plate 11 is provided with a first gap 113 and a second gap 114, the first tip 12 cooperates with the first gap 113, the second tip 13 cooperates with the second gap 114, the first gap 113 The first slit 113 is connected to the flat rope receiving groove 112, the second slit 114 is connected to the flat rope receiving groove 112, the first slit 113 is arranged in parallel with the second slit 114 and passes through the arc plate 31, and the flat rope 4 is placed in the flat rope receiving groove 112; the support assembly 14 includes a first vertical wall 141, a second vertical wall 142 and a first shaft 143, and the two ends of the first shaft 143 are rotatably supported on the first vertical wall 141 and the second vertical wall 142 respectively; the first driving assembly 15 includes a third cam 151, a first connecting rod 152 , a second connecting rod 153 and a first swing rod 154 and a second shaft 155, the third cam 151 drives the first connecting rod 152 to swing up and down; the second connecting rod 153 is in a vertical state or a nearly vertical state, and the first connecting rod 152 drives the second connecting rod 153 to move up and down; the second connecting rod 153 drives the first swing rod 154 to swing back and forth, and the first swing rod 154 drives the second shaft 155 to rotate back and forth; the end of the first connecting rod 152 is hinged to the outer side wall of the first vertical panel wall 131, and the first shaft 143 drives the second connecting rod 153 to swing back and forth. The three cams 151 rotate; the third cam 151 drives the first connecting rod 152 to swing up and down through the second pin 156; the second connecting rod 153 is provided with a plurality of holes 1531, and the first connecting rod 152 and the second connecting rod 153 are hinged at one of the holes 1531, so as to adjust the swing amplitude of the second connecting rod 153, thereby adjusting the swing amplitude of the first tip 12 and the second tip 13; the second connecting rod 153 drives the first swing rod 154 to swing back and forth, and the first swing rod 154 drives the second shaft 155 to rotate back and forth. Fig.14The third cam 151 includes three working areas, namely, the BA area, the AC area and the CB area, and the rotation center of the third cam 151 is O; when the second pin shaft 156 moves in the BA area, since the movement radius of the BA area remains unchanged, in this area, the first tip 12 and the second tip 13 do not swing; when the second pin shaft 156 moves in the AC area, since the movement radius of the AC area gradually increases, the second pin shaft 156 gradually drives the first connecting rod 152 to swing upward, and then drives the first tip 12 to swing upward through the second connecting rod 153, the first swing rod 154 and the second shaft 155. 2 and the second tip 13 swing upward from the flat rope 4, and swing the flat rope 4 to the flat rope support part 213; when the second pin shaft 156 moves in the CB area, since the movement radius of the CB area gradually decreases, the second pin shaft 156 gradually drives the first connecting rod 152 to swing downward, and then drives the first tip 12 and the second tip 13 to swing from the top end of the arc plate 11 to the bottom end of the arc plate 11 through the second connecting rod 153, the first swing rod 154 and the second shaft 155, and the cycle is repeated to realize the reciprocating swing of the first tip 12 and the second tip 13 along the arc plate 11.

[0072] See also Figures 11 to 15 , the driving forces of the first driving assembly 15 and the second driving assembly 16 are both derived from the first shaft 143, and the working principle of the second driving assembly 16 is as follows: the second driving assembly 16 includes a plurality of first transmission gears 161 and a cam assembly 162 driven by the first shaft 143, the cam assembly 162 is rotatably mounted on the second shaft 155, a second transmission gear 163 is arranged on the outer side wall of the cam assembly 162, the first transmission gear 161 is meshed with the second transmission gear 163; the cam assembly 162 drives the third shaft 165 to rotate through a second swing rod 164; the cam assembly 162 includes a cam plate 1621 and a fourth cam 1622, the fourth cam 1622 is provided with an arc-shaped waist hole 1623, and the installation angle of the fourth cam 1622 can be finely adjusted through the arc-shaped waist hole 1623, so as to accurately adjust the rotation trajectory of the third shaft 165; see Fig.15The rotation center of the fourth cam 1622 is F. The fourth cam 1622 includes two working areas, namely the ED area and the DE area. Auxiliary circles G and H are drawn with F as a circle. The radius of the auxiliary circle H is greater than the radius of the auxiliary circle G. The ED area coincides with the partial arc of the auxiliary circle G, and the DE area coincides with the partial arc of the auxiliary circle H. The connection between the ED area and the DE area has a transition arc; the third pin shaft 166 rotates along the ED area and the DE area. When the third pin shaft 166 moves along the ED area, it cannot drive the second swing rod 164, and thus cannot drive the first tip 12 and the second tip 13 to roll down the flat rope 4 through the third shaft 165; the third pin shaft 166 During the transition from the ED zone to the DE zone, the rotation radius of the third pin shaft 166 first decreases and then remains unchanged, so that the second rocker arm 164 drives the first tip 12 and the second tip 13 to press the flat rope 4 downward and maintain a distance (this distance corresponds to the process of the first tip 12 and the second tip 13 moving upward along the arc plate 11). During the transition from the DE zone to the ED zone, the rotation radius of the third pin shaft 166 first increases and then remains unchanged, so that the second rocker arm 164 drives the first tip 12 and the second tip 13 to move away from the flat rope 4 and maintain a distance (this distance corresponds to the process of the first tip 12 and the second tip 13 returning along the arc plate 11).

[0073] See also Fig.13 In order to fasten the first tip 12 and the second tip 13, a first swinging member 167 and a second swinging member 168 are provided on the third shaft 165, a first column 1671 is provided at the end of the first swinging member 167, a first clamping groove 1672 is provided at the end of the first column 1671, a first thin column 1673 is provided in the first clamping groove 1672, the first tip 12 is vertically inserted into the first thin column 1673, or the first tip 12 is vertically fixed to the first thin column 1673, when the first tip 12 pushes the flat rope 4 to move along the curved plate 11, due to the first thin column 1673 Clamped in the first clamping groove 1672, the first tip 12 will not be distorted; a second column 1681 is set at the end of the second swinging member 168, and a second clamping groove 1682 is set at the end of the second column 1681. A second thin column 1683 is set in the second clamping groove 1682, and the second tip 13 is vertically inserted into the second thin column 1683, or the second tip 13 is vertically fixed to the second thin column 1683. When the second tip 13 pushes the flat rope 4 to move along the arc plate 11, the second tip 13 will not be distorted because the second thin column 1683 is clamped in the second clamping groove 1682.

[0074] Example 2

[0075] Embodiment 2 provides a bag forming machine, including the U-shaped handle forming device described in Embodiment 1. The U-shaped handle forming device of Embodiment 1 continuously forms a flat rope into a U-shaped handle so as to prepare a bag with a handle, and the degree of automation is high.

[0076] The bag forming machine disclosed in this embodiment has the same technical solution as that in Embodiment 1. Please refer to Embodiment 1 and will not repeat it here.

Claims

1. U-shaped handle forming device, characterized in that: It includes a flat rope introduction component and a flat rope forming component; The flat rope introduction assembly includes an arc-shaped plate and a first tip and a second tip that reciprocate along the arc-shaped plate; The flat rope forming assembly includes a flat rope clamping assembly, a flat rope folding assembly and a flat rope guiding assembly; The two flat rope clamping assemblies are symmetrically arranged on the forming hub, and the flat rope clamping assembly includes a first clamping jaw, a second clamping jaw, a flat rope supporting portion, a first arc-shaped adsorption portion, and a second arc-shaped adsorption portion. The flat rope supporting portion is symmetrically provided with a first groove and a second groove, and the angle between the first groove and the flat rope supporting portion is 45°, and the angle between the second groove and the flat rope supporting portion is 45°; The flat rope folding assembly is arranged above the forming hub, and comprises a first rotating shaft and a first fixing block and a second fixing block arranged on the first rotating shaft, a first forming piece is installed on the first fixing block, the first forming piece cooperates with the first groove, and a second forming piece is installed on the second fixing block, the second forming piece cooperates with the second groove; The flat rope guide assembly is arranged behind the forming hub, and the flat rope guide assembly includes a first arc-shaped guide plate and a second arc-shaped guide plate; The first arc-shaped guide plate guides the formed first side handle to be adsorbed to the first arc-shaped adsorption portion; The second arc-shaped guide plate guides the formed second side handle to be adsorbed on the second arc-shaped adsorption portion.

2. The U-shaped handle forming device according to claim 1, characterized in that: The first clamping jaw and the second clamping jaw are mounted on a second rotating shaft; A first swing arm and a first pin are provided at one end of the second rotating shaft. The first pin is driven by a first cam. The first cam drives the first clamping jaw and the second clamping jaw to approach or move away from the flat rope supporting portion through the first pin and the first swing arm.

3. The U-shaped handle forming device according to claim 1, characterized in that: The first arc-shaped adsorption portion includes a first cavity, and the second arc-shaped adsorption portion includes a second cavity; The valve distribution shaft penetrates into the first cavity and the second cavity, and the valve distribution shaft is driven by the second cam; A first air hole is provided in the first cavity, a second air hole is provided in the second cavity, and a third air hole and a fourth air hole are provided in the gas distribution shaft; When the second cam drives the valve shaft to move, the third air hole is aligned with the first air hole, and the fourth air hole is aligned with the second air hole; When the second cam drives the valve shaft to return, the third air hole avoids the first air hole, and the fourth air hole avoids the second air hole.

4. The U-shaped handle forming device according to any one of claims 1 to 3, characterized in that: The first tip and the second tip are inserted into a flat rope and drive the flat rope to move along the curved plate to the end of the curved plate; The first clamping jaw and the second clamping jaw clamp the flat rope to the flat rope supporting portion; Under the cooperation of the forming hub and the flat rope folding assembly, the first forming piece is inserted into the first groove and causes the first side handle to tilt up, and the second forming piece is inserted into the second groove and causes the second side handle to tilt up; The forming hub continues to rotate, and the forming hub cooperates with the flat rope guide assembly to adsorb the first side handle and the second side handle to the first arc-shaped adsorption portion and the second arc-shaped adsorption portion respectively.

5. The U-shaped handle forming device according to claim 4, characterized in that: The flat rope introduction assembly also includes a support assembly, a first drive assembly and a second drive assembly; The support assembly includes a first vertical wall, a second vertical wall and a first shaft, and two ends of the first shaft are rotatably supported on the first vertical wall and the second vertical wall respectively; The first driving assembly includes a third cam, a first connecting rod, a second connecting rod, a first swing rod and a second shaft, and the third cam drives the first connecting rod to swing up and down; The second connecting rod is in a vertical state or a nearly vertical state, and the first connecting rod drives the second connecting rod to move up and down; The second connecting rod drives the first swing rod to swing back and forth, and the first swing rod drives the second shaft to rotate back and forth; The end of the first connecting rod is hinged to the outer side wall of the first vertical panel wall, and the first shaft drives the third cam to rotate; The third cam drives the first connecting rod to swing up and down through the second pin shaft; The second connecting rod is provided with a plurality of holes, and the first connecting rod and the second connecting rod are hinged at one of the holes.

6. The U-shaped handle forming device according to claim 5, characterized in that: The second driving assembly includes a plurality of first transmission gears and a cam assembly driven by the first shaft, the cam assembly is rotatably mounted on the second shaft, a second transmission gear is arranged on an outer side wall of the cam assembly, and the first transmission gear meshes with the second transmission gear; The cam assembly drives the third shaft to rotate through the second swing rod; The driving forces of the first driving assembly and the second driving assembly both come from the first shaft; The cam assembly comprises a cam plate and a fourth cam, and the fourth cam is provided with an arc-shaped waist hole.

7. The U-shaped handle forming device according to claim 6, characterized in that: A first swinging member and a second swinging member are arranged on the third shaft; A first column is disposed at the end of the first swinging member, a first clamping groove is disposed at the end of the first column, a first thin column is disposed in the first clamping groove, and the first tip is vertically inserted into the first thin column; A second column is disposed at the end of the second swinging member, a second clamping groove is disposed at the end of the second column, a second thin column is disposed in the second clamping groove, and the second tip is vertically inserted into the second thin column.

8. The U-shaped handle forming device according to claim 5, characterized in that: The arc plate is installed on a flat rope supporting platform, and the flat rope supporting platform is provided with a flat rope containing groove.

9. The U-shaped handle forming device according to claim 5, characterized in that: The arc-shaped plate is provided with a first gap and a second gap, the first tip is matched with the first gap, and the second tip is matched with the second gap; The first gap is communicated with the flat rope accommodating groove, and the second gap is communicated with the flat rope accommodating groove.

10. Bag forming machine, characterized in that, It comprises the U-shaped handle forming device described in any one of claims 1-9.

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