Short bag body environment-friendly bag bag bottom forming mechanism and forming method
By using a double-clamp gripping and insert-blade folding method, the interference problem during the bottom forming of short-bodied eco-friendly bags was solved, achieving efficient bottom folding and forming.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU FANGBANG MACHINERY
- Filing Date
- 2023-08-22
- Publication Date
- 2026-06-19
AI Technical Summary
The existing bag bottom forming mechanism cannot adapt to the automatic processing and forming of short-bodied eco-friendly tote bags. The bag body is prone to interference during bottom forming, leading to forming failure.
The bag bottom is held at both ends by double-clamp fingers, and the bag body is fixed by an adsorption part. A folding part is formed in the groove by an insert knife, and the bottom is folded by the bottoming mechanism.
It achieves stable clamping and efficient folding of the bottom of the short-body eco-friendly bag, avoiding interference between the bag body and the bottom-forming mechanism, and ensuring successful shaping.
Smart Images
Figure CN116834377B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tote bag forming technology, and in particular to a short-body eco-friendly bag bottom forming mechanism and forming method. Background Technology
[0002] As the use cases for tote bags continue to expand, tote bags of various shapes and sizes need to be processed by automated forming equipment to efficiently form them and reduce costs. Currently, for short-bodied eco-friendly tote bags, due to their short length, one end of the bag body cannot be fixed during bottom forming, and the bag body interferes with the bending part of the bottom during bottom forming. As a result, current bottom forming mechanisms cannot meet the needs of automated processing and forming of short-bodied eco-friendly tote bags.
[0003] Therefore, there is an urgent need to develop a bottom forming mechanism and method for short-body eco-friendly bags to achieve automatic forming of short-body tote eco-friendly bags. Summary of the Invention
[0004] To solve the above-mentioned technical problems, the purpose of this invention is to disclose a short-body eco-friendly bag bottom forming mechanism and forming method. By using two clamping fingers to clamp the front and rear ends of the bag bottom respectively, the bag bottom is fixed on the one hand, and the bending and forming of the bag bottom bending part is achieved on the other hand.
[0005] The first objective of this invention is to provide a bag body and bottom forming mechanism for an eco-friendly bag.
[0006] The second objective of this invention is to provide a method for forming the bottom of a short-bodied eco-friendly bag.
[0007] To achieve the aforementioned first objective, the present invention provides a bottom forming mechanism for an eco-friendly bag, comprising a large hub wheel and four sets of bottom forming components arranged circumferentially along the large hub wheel;
[0008] The bag bottom forming assembly includes an adsorption part, a support part, and a bag bottom support part disposed between the adsorption part and the support part;
[0009] The front end of the bag bottom support is symmetrically provided with a first clamping finger and a second clamping finger, and the rear end of the bag bottom support is symmetrically provided with a third clamping finger and a fourth clamping finger;
[0010] The distance between the first and third gripping fingers is equal to the bottom width of the eco-friendly bag;
[0011] A first groove is provided between the first and second gripping fingers, and a second groove is provided between the third and fourth gripping fingers.
[0012] Preferably, the adsorption section is provided with a plurality of vacuum adsorption holes.
[0013] Preferably, the adsorption section is provided with a central gripper finger.
[0014] Preferably, the end of the first gripper finger is provided with a first inclined surface, and the end of the second gripper finger is provided with a second inclined surface.
[0015] Preferably, the end of the third finger is provided with a first L-shaped defect, and the end of the fourth finger is provided with a second L-shaped defect.
[0016] Preferably, a first groove and a second groove are provided in a direction perpendicular to the first groove.
[0017] Preferably, some of the vacuum adsorption holes are arranged in rows along the first tank.
[0018] Preferably, the first and second gripping fingers both have the action of inserting into the bottom of the bag and gripping the bottom of the bag; the third and fourth gripping fingers both have the action of inserting into the bottom of the bag and gripping the bottom of the bag.
[0019] Preferably, the insertion of the first and second gripping fingers into the bottom of the bag is achieved by an axial cam; the gripping of the first and second gripping fingers on the bottom of the bag is achieved by a circumferential cam.
[0020] The insertion of the third and fourth gripping fingers into the bottom of the bag is achieved by an axial cam; the clamping action of the third and fourth gripping fingers on the bottom of the bag is achieved by a circumferential cam.
[0021] Based on the same inventive principle, in order to achieve the above-mentioned second inventive objective, the present invention provides a method for forming the bottom of a short-body eco-friendly bag. The short-body eco-friendly bag includes a bottom and a body. The bottom includes a first bend and a second bend. When the short-body eco-friendly bag is in a folded state, the body extends slightly beyond the bottom.
[0022] The bottom of the bag is formed using the short-body eco-friendly bag bottom forming mechanism described in the first invention, including the following steps:
[0023] The bag is conveyed to a predetermined position and adsorbed onto the adsorption unit;
[0024] The center clamping finger clamps the first side of the bag body, and the first clamping finger and the second clamping finger respectively clamp the two sides of the front end of the bag bottom;
[0025] The second side of the bag body is attached by suction cups and pulled upwards;
[0026] The third and fourth fingers grip the two sides of the rear end of the bag bottom, respectively;
[0027] The first inserter is inserted into the first groove to form the first bend, and the second inserter is inserted into the second groove to form the second bend.
[0028] Fold the second bend to the bottom of the bag.
[0029] Compared with the prior art, the technical effects of the present invention are as follows:
[0030] The body of the eco-friendly bag slightly exceeds the second groove. The front end of the bottom of the bag is held by the first and second clamping fingers, and the rear end of the bottom of the bag is held by the third and fourth clamping fingers, so that both the front and rear ends of the bottom of the bag are held. The bag body is also held by the third and fourth clamping fingers. When the inserter is inserted into the second groove, a crease is formed at the second bend of the bottom of the bag. Then, the second bend is closed by the bottom-sealing mechanism. When the bottom-sealing mechanism closes the second bend, the bag body is also held by the third and fourth clamping fingers, thus preventing the bag body from being closed. Attached Figure Description
[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of an existing eco-friendly bag.
[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of the short-bodied eco-friendly bag of the present invention.
[0034] Figure 3 This is a three-dimensional structural diagram of the bag bottom forming mechanism of the present invention.
[0035] Figure 4 This is a three-dimensional structural diagram of the bag bottom forming mechanism of the present invention.
[0036] Figure 5 This is a schematic diagram showing the front and rear ends of the bag bottom of the present invention being clamped.
[0037] Figure 6 This is a three-dimensional structural diagram of the cam disk of the present invention.
[0038] Figure 7 This is a schematic diagram of the first clamping finger and the transverse cam of the present invention.
[0039] Figure 8 This is a schematic diagram of the first clamping finger and the circumferential cam of the present invention.
[0040] Figure 9 This is a schematic diagram of the first clamping finger and the circumferential cam of the present invention.
[0041] Figure 10 This is a side view schematic diagram of the bag bottom forming mechanism of the present invention.
[0042] Figure 11 It is a schematic flow diagram of the method for forming the bottom of the bag of the present invention.
[0043] Among them, 1. Large hub wheel; 11. Cam disc; 111. Axial cam; 1111. Axial inclined surface; 112. Circumferential cam; 1121. Circumferential inclined surface; 2. Bag bottom forming component; 21. Adsorption part; 211. Vacuum adsorption hole; 212. Central finger; 22. Support part; 23. Bag bottom support part; 231. First finger; 2311. First inclined surface; 2312. Rotating shaft; 2313. Swing block; 2314. Locking block; 2315. Chuck; 232. Second finger; 2321. Second inclined surface; 233. Third finger; 2331. First L-shaped defect part; 2341. Second L-shaped defect part; 24. First groove body; 241. First groove; 242. First groove; 25. Second groove body; 3. Bag body; 31. First surface; 32. Second surface; 4. Bag bottom; 41. First bending part; 42. Second bending part; 5. Suction cup; 6. First cutting knife; 7. Second cutting knife; 8. Bag collecting hub. Specific embodiments
[0044] The following combines the accompanying drawings to describe the present invention in detail with reference to the various embodiments. It should be noted that these embodiments are not limitations on the present invention. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.
[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.
[0046] Embodiment 1
[0047] Refer Figures 3 to 4 As shown, this embodiment discloses a specific implementation of a bottom forming mechanism for a short bag body environmental protection bag (hereinafter referred to as "bottom forming mechanism").
[0048] The bottom forming mechanism for a short bag body environmental protection bag, refer Figures 3 to 4As shown, the bag includes a large hub wheel 1 and four sets of bag bottom forming components 2 arranged circumferentially along the large hub wheel 1. The bag bottom forming components 2 include an adsorption part 21, a support part 22, and a bag bottom support part 23 disposed between the adsorption part 21 and the support part 22. The front end of the bag bottom support part 23 is symmetrically provided with a first clamping finger 231 and a second clamping finger 232, and the rear end of the bag bottom support part 23 is symmetrically provided with a third clamping finger 233 and a fourth clamping finger 234. The distance between the first clamping finger 231 and the third clamping finger 233 is the width of the bottom of the eco-friendly bag. A first groove 24 is provided between the first clamping finger 231 and the second clamping finger 232, and a second groove 25 is provided between the third clamping finger 233 and the fourth clamping finger 234.
[0049] Specifically, Figure 1 This is a schematic diagram of an existing long-bodied eco-friendly tote bag. Figure 1 The bag body is long enough to be held in place during the bottom forming process, and the held bag body will not interfere with the bottom forming mechanism. However, the eco-friendly bag to be automatically formed in this embodiment has a shorter bag body. When the short-bodied eco-friendly bag is folded, the bag body 3 extends slightly beyond the bottom 4. The bag body 3 of this type of eco-friendly bag cannot be held in place. It is necessary to hold the rear end of the bottom of the bag body 3 with the third clamping finger 233 and the fourth clamping finger 234 to prevent the bag body 3 from being closed when the second bend 42 is closed during bottom forming.
[0050] It should be noted that in this embodiment, the front end is the forward direction of the eco-friendly bag, while the rear end is the opposite direction. The front end of the bag bottom support 23 is symmetrically provided with a first clamping finger 231 and a second clamping finger 232, which respectively clamp the two sides of the front end of the bag bottom 4. The rear end of the bag bottom support 23 is symmetrically provided with a third clamping finger 233 and a fourth clamping finger 234, which respectively clamp the two sides of the rear end of the bag bottom 4. (See [reference]). Figure 5The front and rear ends of the bag bottom 4 are clamped. The distance between the first clamping finger 231 and the third clamping finger 232 is the width of the bag bottom 4. Specifically, the end of the first clamping finger 231 is provided with a first inclined surface 2311, and the end of the second clamping finger 232 is provided with a second inclined surface 2321. The first inclined surface 2311 and the second inclined surface 2321 prevent the first clamping finger 231 and the second clamping finger 232 from interfering with the bag body 4 during horizontal displacement. On the other hand, they prevent the external inserter from being inserted into the first groove 24. When the crease of the first bend 41 is formed, interference is formed; the end of the third finger 233 is provided with a first L-shaped defect 2331, and the end of the fourth finger 234 is provided with a second L-shaped defect 2341. When the second bend 42 is closed, the first L-shaped defect 2331 and the second L-shaped defect 2341 provide a clearance for the external inserter to be inserted into the second groove 25. In addition, the first L-shaped defect 2331 and the second L-shaped defect 2341 also provide a reference for closing the second bend 42.
[0051] See Figure 3 and Figure 4 For easy securing of the bag body 3 and bottom, see [reference needed]. Figure 3 and Figure 4 The adsorption part 21 is provided with a plurality of vacuum adsorption holes 211 and a central clamping finger 212 to clamp the first side of the bag body 4 (the side that is in close contact with the large hub wheel 1). In order to make the first side of the bag body 4 fit more stably against the adsorption part 21, some of the vacuum adsorption holes 211 are arranged in rows along the first groove 24 so that the entire width direction of the bag body 4 is adsorbed.
[0052] To achieve the clamping of the bag bottom 4 by the first clamping finger 231, the second clamping finger 232, the third clamping finger 233, and the fourth clamping finger 234, the first clamping finger 231 and the second clamping finger 232 each have the action of inserting into the bag bottom 4 and clamping the bag bottom 4. The action of inserting the first clamping finger 231 and the second clamping finger 232 into the bag bottom 4 is realized by an axial cam; the action of clamping the first clamping finger 231 and the second clamping finger 232 into the bag bottom 4 is realized by a circumferential cam. The third clamping finger 233 and the fourth clamping finger 234 each have the action of inserting into the bag bottom 4 and clamping the bag bottom 4. The action of inserting the third clamping finger 233 and the fourth clamping finger 234 into the bag bottom 4 is realized by an axial cam; the action of clamping the third clamping finger 233 and the fourth clamping finger 234 into the bag bottom 4 is realized by a circumferential cam.
[0053] The actions and principles by which the first clamping finger 231, the second clamping finger 232, the third clamping finger 233, and the fourth clamping finger 234 clamp the bottom 4 of the bag are the same. The following explanation uses the axial direction and clamping action of the first clamping finger 231 as an example. (See [link to relevant documentation]). Figures 6 to 9, cam discs 11 are respectively arranged on both sides of the large hub wheel 1. An axial cam 111 and a circumferential cam 112 are arranged in the cam disc 11. The axial cam 111 drives the first finger to approach or move away from the bottom of the bag 4 through the axial inclined surface 1111, while the circumferential cam 112 drives the first finger to clamp or release the bottom of the bag 4 through the circumferential inclined surface 1121. The first finger 231 includes a rotating shaft 2312, a swing block 2313, a locking block 2314 and a chuck 2315. The axial cam 111 drives the rotating shaft 2312 and带动 the locking block 2314 and the chuck 2315 to approach the bottom of the bag 4, while the circumferential cam 112 drives the swing block 2313 and带动 the locking block 2314 and the chuck 2315 to clamp the bottom of the bag 4; by adjusting the installation direction of the locking block 2314, the matching degree between the chuck 2315 and the large hub wheel 1 can be finely adjusted.
[0054] In view of the fact that the operating principles of the second finger 232, the third finger 233 and the fourth finger 234 are the same as those of the first finger 231, the operating principles of the second finger 232, the third finger 233 and the fourth finger 234 will not be elaborated herein.
[0055] After the bottom of the bag 4 is formed, refer to Figure 10 , the large hub wheel 1 conveys the environmental protection bag to the bag receiving hub 8. The surface of the bag receiving hub 8 has environmental protection bag fingers. In order to provide avoidance for the environmental protection bag fingers, a first groove 241 and a second groove 242 are arranged in a direction perpendicular to the first groove body 24.
[0056] Embodiment 2
[0057] Refer to Figure 10 and Figure 11 As shown, this embodiment discloses a specific implementation manner of a method for forming the bottom of an environmental protection bag with a short bag body.
[0058] A method for forming the bottom of an environmental protection bag with a short bag body. The environmental protection bag with a short bag body includes a bottom of the bag 4 and a bag body 3. The bottom of the bag 4 includes a first bending part 41 and a second bending part 42. When the environmental protection bag with a short bag body is in a folded state, the bag body 3 extends slightly beyond the bottom of the bag 4. Specifically, refer to Figure 2 , the bag body 3 of this kind of environmental protection bag is relatively short and can carry items with a relatively low height but a relatively large bottom plate, such as cakes. Since the bag body 3 of this kind of environmental protection bag is relatively short, when the bottom of the bag is formed, there is no clamping space after the bag body 3 is folded and it is easy to interfere with the bottom closing mechanism.
[0059] Refer to Figure 10 and Figure 11 , the bottom of the bag in this embodiment is formed by using the bottom forming mechanism of the environmental protection bag with a short bag body described in Embodiment 1, and includes the following steps:
[0060] Step S1: The bag body 3 is conveyed to a predetermined position and adsorbed on the adsorption part 21; specifically, the bag body 3 is in a cylindrical shape before folding, and the cylindrical bag body is conveyed to the adsorption part 21 and adsorbed firmly.
[0061] Step S2: The center clamping finger 212 clamps the first surface 31 of the bag body 3, and the first clamping finger 231 and the second clamping finger 232 respectively clamp the two sides of the front end of the bag bottom 4; specifically, the two sides of the front end of the bag bottom 4 are clamped by the first clamping finger 231 and the second clamping finger 232 respectively, providing a basis for subsequent folding of the bag bottom.
[0062] Step S3: The second side 32 of the bag body is attached by the suction cup 5 and pulled upward; specifically, the process of pulling the second side 32 upward is the process of unfolding the bottom 4 of the bag.
[0063] Step S4: The third gripping finger 233 and the fourth gripping finger 234 respectively grip the two sides of the rear end of the bag bottom 4. Specifically, this step forms Figure 5 The bottom of the bag is shown;
[0064] Step S5: The first insert 6 is inserted into the first groove 24 to form the first bend 41, and the second insert 7 is inserted into the second groove 25 to form the second bend 42; specifically, after closing the first bend 41 and the second bend 42, a folded bag bottom is formed, as shown in the figure. Figure 2 The state shown.
[0065] Step S6: Fold the second bend 42 to the bottom of the bag. Specifically, the second bend 32 is closed by the bottoming mechanism, while the first bend 41 is closed by the relative rotation of the bag hub 8 and the large hub wheel 1.
[0066] In this embodiment, the body 3 of the eco-friendly bag slightly exceeds the second groove 25. The front end of the bottom 4 is held by the first clamping finger 231 and the second clamping finger 232, and the rear end of the bottom 4 is held by the third clamping finger 233 and the fourth clamping finger 234, so that both the front and rear ends of the bottom 4 are held. The body 3 is also held by the third clamping finger 233 and the fourth clamping finger 234. When the second insert 7 is inserted into the second groove 25, a crease is formed in the second bend 42 of the bottom of the bag. Then, the bottoming mechanism closes the second bend 42. When the bottoming mechanism closes the second bend 42, the bag body is also held by the third clamping finger 233 and the fourth clamping finger 234, thus preventing the bag body from being closed, thereby achieving efficient folding of the bottom of the short-bodied eco-friendly bag.
Claims
1. A bottom forming mechanism for a short-body eco-friendly bag, characterized in that, It includes a large hub wheel and four sets of bag bottom forming components arranged circumferentially along the large hub wheel; The bag bottom forming assembly includes an adsorption part, a support part, and a bag bottom support part disposed between the adsorption part and the support part; The front end of the bag bottom support is symmetrically provided with a first clamping finger and a second clamping finger, and the rear end of the bag bottom support is symmetrically provided with a third clamping finger and a fourth clamping finger. The third clamping finger and the fourth clamping finger clamp the rear end of the bag bottom while clamping the bag body. The distance between the first and third gripping fingers is equal to the bottom width of the eco-friendly bag; A first groove is provided between the first and second clamping fingers, and a second groove is provided between the third and fourth clamping fingers.
2. The short bag body environment-friendly bag bottom forming mechanism according to claim 1, characterized in that, The adsorption section is provided with several vacuum adsorption holes.
3. The short bag body environment-friendly bag bottom forming mechanism according to claim 1, characterized in that, The adsorption section is provided with a central clamping finger.
4. The short-bag body eco-friendly bag bottom forming mechanism according to claim 1, wherein The end of the first gripper finger is provided with a first inclined surface, and the end of the second gripper finger is provided with a second inclined surface.
5. The short-bag body eco-friendly bag bottom forming mechanism according to claim 1, wherein The end of the third finger is provided with a first L-shaped defect, and the end of the fourth finger is provided with a second L-shaped defect.
6. The short-bag body eco-friendly bag bottom forming mechanism according to claim 1, wherein A first groove and a second groove are provided perpendicular to the first groove.
7. The short-bag body environment-friendly bag bottom forming mechanism according to claim 2, characterized in that, Some of the vacuum adsorption holes are arranged in rows along the first tank.
8. The short-bag body environment-friendly bag bottom forming mechanism according to any one of claims 1-7, characterized in that, The first and second gripping fingers both have the action of inserting into the bottom of the bag and gripping the bottom of the bag; the third and fourth gripping fingers both have the action of inserting into the bottom of the bag and gripping the bottom of the bag.
9. The short-body eco-friendly bag bottom forming mechanism as described in claim 8, characterized in that, The insertion of the first and second gripping fingers into the bottom of the bag is achieved by an axial cam; the gripping of the first and second gripping fingers on the bottom of the bag is achieved by a circumferential cam. The insertion of the third and fourth gripping fingers into the bottom of the bag is achieved by an axial cam; the clamping action of the third and fourth gripping fingers on the bottom of the bag is achieved by a circumferential cam.
10. A method for forming the bottom of a short-body eco-friendly bag, characterized in that, The short-body eco-friendly bag includes a bottom and a body. The bottom includes a first bend and a second bend. When the short-body eco-friendly bag is folded, the body extends slightly beyond the bottom. The bottom of the bag is formed using the short-body eco-friendly bag bottom forming mechanism as described in any one of claims 1-9, including the following steps: The bag is conveyed to a predetermined position and adsorbed onto the adsorption unit; The center clamping finger clamps the first side of the bag body, and the first clamping finger and the second clamping finger respectively clamp the two sides of the front end of the bag bottom; The second side of the bag body is attached by suction cups and pulled upwards; The third and fourth fingers grip the two sides of the rear end of the bag bottom, respectively; The first inserter is inserted into the first groove to form the first bend, and the second inserter is inserted into the second groove to form the second bend. Fold the second bend to the bottom of the bag.