CN113264234B - Bag mouth clamping device for woven bag seam - Google Patents
Bag mouth clamping device for woven bag seam Download PDFInfo
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- CN113264234B CN113264234B CN202110455475.XA CN202110455475A CN113264234B CN 113264234 B CN113264234 B CN 113264234B CN 202110455475 A CN202110455475 A CN 202110455475A CN 113264234 B CN113264234 B CN 113264234B
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- clamping rod
- bag
- clamping
- lower clamping
- opening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/04—Applying separate sealing or securing members, e.g. clips
- B65B51/07—Sewing or stitching
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- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a bag opening clamping device for woven bag seam opening, and belongs to the field of packaging machinery. The device uses a clamping mechanism fixed on one side, the clamping mechanism is inserted into a gap on the inner side of a stitch of the bag sewing machine in a clamping state, and the clamping mechanism is fixed in position in the process of sewing the opening, so that the whole bag opening is always firmly clamped in the whole process of sewing the opening. After the bag closer is reset, the clamping mechanism is opened, the passing space of the sewed object is completely made free, no additional position conversion action is needed, and the sewed object is conveyed by using a belt; the suspended end of the clamping mechanism is locked by using a movable locking mechanism so as to overcome the insufficient rigidity caused by the unilateral fixation of the clamping mechanism. The invention realizes that the bag openings before, in and after the seam are firmly clamped and tensioned, and the tightness of the seam is high; the possibility that the sewing line deviates from the range of the bag outlet is almost zero, the transverse translation is not needed, the sewing line is positioned in the seam of the conveying belt during recovery, the mechanical complexity and the production cost are low, and the occupied area is small.
Description
Technical Field
The invention belongs to the field of packaging machinery, and relates to a device for clamping and tensioning a bag opening in a sewing process, which is convenient for sewing a woven bag.
Background
The woven bag is sewn by using a bag sewing machine, or the bag sewing machine is manually held, or the bag sewing machine is fixed on a guide rail so as to be convenient to move horizontally, and the bag opening still needs to be manually pulled to avoid abnormity caused by bag opening retraction in the bag sewing process.
In the prior art, an automatic seaming device (CN 110644147 a) has been used for feeding a woven bag into an inlet of a sewing machine through a belt which is pulled obliquely, and the sewing machine is pulled by the belt to finish seaming the woven bag from left to right, and the clamping belt moves horizontally along with the bag sewing machine. The existing automatic seam-sewing equipment (CN 110644147A) adopts a rubber belt structure, a bag mouth clamping mechanism and a bag-sewing machine are translated simultaneously, the bag mouth is clamped before being sent into the bag-sewing machine, and the bag mouth is tensioned through the slightly inclined arrangement of a belt. However, the following problems exist:
(1) the bag mouth clamping and tightening device is positioned in front of an inlet of the bag sewing machine, and due to the limitation of the mechanism, the bag mouth entering the bag sewing machine and after bag sewing cannot be clamped.
(2) The bag mouth clamping mechanism has large volume, and the bag mouth clamping mechanism and the bag sewing machine are required to be translated out of the range of the packaged objects together in the operation process, so that the occupied area is large.
(3) In order to make the passage between the sack closer and the clamping mechanism, the packed object conveyor must have a back-and-forth translation action, which increases the complexity of the action and reduces the reliability.
(4) The mechanism is complicated, the cost is high, and the maintenance and overhaul difficulty is large.
(5) Due to unstable friction force, the woven bag can generate wrinkles when being sewn, or the woven bag is deviated.
Based on the above, the invention designs a bag opening clamping device for the woven bag seam, which adopts a brand-new mechanical structure to realize clamping and tensioning of the bag opening of the seam.
Disclosure of Invention
In order to solve the problems, the invention provides a bag opening clamping device for sewing a woven bag, which uses a clamping mechanism fixed on one side, wherein the clamping mechanism is just inserted into a gap on the inner side of a stitch of a bag sewing machine in a clamping state, and the position of the clamping mechanism is fixed in the process of sewing the opening, so that the whole bag opening is always firmly clamped in the whole process of sewing the opening; after the bag closer is reset, the clamping mechanism is opened, the passing space of the sewed object is completely made free, extra position conversion action is not needed, and the sewed object can be directly conveyed by using a belt; and the movable locking mechanism is used for locking the non-fixed end of the clamping mechanism so as to overcome the insufficient rigidity caused by the unilateral fixation of the clamping mechanism.
The technical scheme of the invention is as follows:
a bag mouth clamping device for sewing a woven bag mouth comprises a main frame 1, a clamping mechanism, a clamping rod hanging end locking mechanism 8, an auxiliary baffle 2, a bag sewing machine 9 and a conveying belt 11.
The main frame 1 is a door-shaped frame structure composed of two upright posts and a cross beam, and is arranged above the conveying belt 11. The conveying belts 11 are used for conveying woven bags, and seams are arranged at positions, needing to be sewn, of the woven bags on the two conveying belts 11.
The clamping mechanism comprises an upper clamping rod 4, an upper clamping rod fixing and guiding mechanism 5, a lower clamping rod 6 and a lower clamping rod fixing and guiding mechanism 7. The upper clamping rod and the lower clamping rod are cylindrical, one ends of the upper clamping rod and the lower clamping rod are respectively and vertically arranged on the upright posts on the same side of the main frame through the upper clamping rod fixing and guiding mechanism 5 and the lower clamping rod fixing and guiding mechanism 7, and the upper clamping rod and the lower clamping rod are arranged oppositely up and down. The upper clamping rod fixing and guiding mechanism 5 and the lower clamping rod fixing and guiding mechanism 7 have guiding and driving functions, and respectively drive the upper clamping rod 4 and the lower clamping rod 6 to move inwards to realize clamping and move outwards to realize opening. When the clamping mechanism is in an open state, the clamping rod 6 is positioned in the joint of the conveying belt, and the upper surface of the clamping rod is not higher than the plane of the conveying belt, so that the conveying of objects to be sewn is prevented from being influenced.
The upper clamping rod fixing and guiding mechanism 5 comprises a motor so as to drive the upper clamping rod 4 to rotate, so that the clamping mechanism can clamp the bag opening and simultaneously tighten the bag opening; the rod shaft of the lower clamping rod 6 is fixed, and a shaft sleeve capable of freely rotating is sleeved on the rod shaft and rotates along with the upper clamping rod.
The clamping rod hanging end locking mechanism 8 is positioned between the upper clamping rod and the lower clamping rod and is arranged on the upright post at the other side of the main frame through a power element (such as an air cylinder). When the clamping mechanism clamps, the pin head of the clamping rod free end locking mechanism 8 is inserted into the free ends of the upper clamping rod and the lower clamping rod to realize locking; when the clamping mechanism is opened, the pin head of the clamping rod hanging end locking mechanism 8 retracts to make way for the conveying channel. The taper pin at the pin head of the clamping rod free end locking mechanism 8 can rotate freely so as to adapt to the rotation of the clamping rod in a locking state.
The auxiliary baffle 2 is positioned above the woven bag, and two ends of the auxiliary baffle are fixed by the auxiliary baffle and are arranged between two vertical columns of the main frame through the guide mechanism 3. The auxiliary baffle fixing and guiding mechanism 3 has guiding and driving functions, the auxiliary baffle 2 retracts to leave out a conveying channel of the packaged objects during conveying, and the auxiliary baffle 2 is in place to block the packaged objects in the woven bag during opening sewing so as to prevent the packaged objects from being pulled into the range of the bag sewing machine to cause obstacles when the bag opening is pulled tightly.
The upper part of the sack closer 9 is arranged on a beam of the main frame through a sack closer fixing and guiding mechanism 10; the inner side of the stitch of the sack closer 9 is provided with a hole, the clamping rod hanging end locking mechanism 8 and the upper clamping rod and the lower clamping rod in a clamping state penetrate through a hole gap of the sack closer 9, and the sack closer 9 moves along a cross beam and starts or stops sack closer under the drive of the sack closer fixing and guiding mechanism 10.
Furthermore, the suspended ends of the upper clamping rod and the lower clamping rod are respectively provided with an outer contour matched with each other; the free end ends of the upper clamping rod and the lower clamping rod are provided with tapered holes with chamfers, the pin head of the clamping rod free end locking mechanism 8 is provided with a conical surface shape matched with the tapered holes, and the clamping rod free end locking mechanism is firmly combined with the upper clamping rod and the lower clamping rod when inserted.
Furthermore, an external guide mechanism is arranged at the head part of the pin of the clamping rod hanging end locking mechanism 8, so that the clamping rod hanging end locking mechanism can be smoothly butted with the upper clamping rod and the lower clamping rod when a certain position deviation exists.
Furthermore, the upper clamping rod and the lower clamping rod are driven by belts, or the lower clamping rod is driven by belts and the upper clamping rod follows up.
Furthermore, the shapes of the upper clamping rod and the lower clamping rod are replaced by other shapes which are matched with each other, and the action of tensioning the bag opening by the upper clamping rod and the lower clamping rod is not rotation, but translation tensioning the bag opening after clamping.
Further, the upper clamping rod 4 is adhered with high-friction material to increase the friction force to strengthen the effect of tensioning the bag opening, such as surface knurling or rubber coating.
Furthermore, a driving element (such as a servo motor) with force induction is adopted to measure the resistance when the upper clamping rod and the lower clamping rod move up and down, and if abnormal conditions exist, the resistance can be detected in real time.
The invention has the beneficial effects that:
(1) in principle, the bag opening clamping device for automatic sewing is just inserted into a gap on the inner side of a stitch of a bag sewing machine in a clamping state by utilizing a clamping rod structure with a suspended single side, the position of a clamping mechanism is fixed in the sewing process, the whole bag opening is ensured to be firmly clamped all the time in the whole sewing process, the bag openings before, in and after the sewing are firmly clamped and tensioned, and the tightness of the sewing is high;
(2) due to special layout requirements, the upper clamping rod and the lower clamping rod are supported by slender cantilever arms, and the problem that the end heads of the upper clamping rod and the lower clamping rod are very weak in rigidity is effectively solved through the clamping rod hanging end locking mechanism;
(3) the clamping position of the bag opening is outside the sewing position (towards the bag opening side), so that the possibility that the sewing deviates from the range of the bag opening is almost zero;
(4) the bag opening clamping device does not need transverse translation, is positioned in a conveying belt seam during recovery, and has low mechanical complexity and production cost and small occupied area.
Drawings
Fig. 1 is an oblique view of the device of the present invention.
Fig. 2 is a front view of the device of the present invention.
Fig. 3 is a side view of the device of the present invention.
Fig. 4 is a schematic diagram of the operation of the apparatus of the present invention.
Fig. 5 is a schematic view of the clamping mechanism of the device of the invention when locked.
In the figure: 1 a main frame; 2, an auxiliary baffle plate; 3 auxiliary baffle fixing and guiding mechanism; 4, clamping the rod; 5, fixing and guiding the clamping rod; 6, a lower clamping rod; 7, a lower clamping rod fixing and guiding mechanism; 8, a clamping rod hanging end locking mechanism; 9, a bag sewing machine; 10, fixing and guiding mechanism of the sack closer; 11 conveyor belt.
Detailed Description
The following examples and drawings are included to further illustrate the embodiments of the present invention and are not intended to limit the invention thereto.
As shown in FIG. 1, the present invention provides a bag mouth clamping device for woven bag seam, the action process is as follows:
in the process of conveying the sewed object: the locking mechanism 8 at the free end of the clamping rod retreats rightwards; the upper clamping rod 4 is retracted upwards, so that the height of the upper clamping rod 4 is larger than the object to be sewn and a margin is reserved; the lower clamping rod 6 is retracted downwards and is positioned in the seam of the conveying belt 11, and the upper surface of the lower clamping rod 6 is not higher than the plane of the conveying belt, so that the conveyed objects are prevented from being blocked; the sack closer 9 is completely staggered with the upper and lower clamping bars in the left and right directions at the rightmost initial position. The front view of the state at this time is shown in fig. 2, and the side view is shown in fig. 3.
When the object to be sewn is conveyed to the object to be packaged and passes over the seam of the conveying belt, the sewing action is started. The upper clamping rod 4 moves downwards, and the lower clamping rod 6 moves upwards to clamp the bag mouth; the clamping rod hanging end locking mechanism 8 is inserted leftwards, the auxiliary baffle 2 moves downwards until the lower edge of the auxiliary baffle is slightly higher than the height of the seam, the conical shape of the pin head of the clamping rod hanging end locking mechanism 8 is matched with the conical holes at the hanging end parts of the upper clamping rod and the lower clamping rod to be tightly combined, the upper clamping rod 4 starts to rotate (the direction is shown in figure 4), the lower clamping rod 6 rotates along with the clamping rod, and the bag opening is tightened. The bag sewing machine 9 starts to run from right to left and starts bag sewing; the upper clamping rod, the lower clamping rod and the clamping rod hanging end locking mechanism 8 are respectively kept in a clamping state and a locking state in the bag sewing process, the rotating torque is always kept, and the bag opening is always tensioned in the whole bag sewing process.
After the bag sewing is finished, the bag sewing machine 9 is reset rightwards, after the bag sewing machine is completely moved out of the range of the upper clamping rod and the lower clamping rod, the clamping rod hanging end locking mechanism 8 is withdrawn rightwards, the upper clamping rod is withdrawn upwards, the lower clamping rod is withdrawn downwards, the auxiliary baffle 2 is withdrawn upwards, the bag sewing machine is withdrawn to the position of the conveying state, and the objects to be sewn are conveyed continuously; and the process is circulated.
Claims (6)
1. A bag mouth clamping device for sewing a woven bag mouth is characterized by comprising a main frame (1), a clamping mechanism, a clamping rod hanging end locking mechanism (8), an auxiliary baffle (2), a bag sewing machine (9) and a conveying belt (11);
the main frame (1) is of a door-shaped frame structure and is arranged above the conveying belt (11); the two conveying belts (11) are provided with seams at the positions of objects to be sewn;
the clamping mechanism comprises an upper clamping rod (4), an upper clamping rod fixing and guiding mechanism (5), a lower clamping rod (6) and a lower clamping rod fixing and guiding mechanism (7); wherein, the upper and lower clamping bars are cylindrical, one end of the upper and lower clamping bars is vertically arranged on the upright post at the same side of the main frame through an upper clamping bar fixing and guiding mechanism (5) and a lower clamping bar fixing and guiding mechanism (7), and the upper and lower clamping bars are arranged oppositely up and down; the upper clamping rod fixing and guiding mechanism (5) and the lower clamping rod fixing and guiding mechanism (7) respectively drive the upper clamping rod (4) and the lower clamping rod (6) to move inwards to realize clamping and move outwards to realize opening; when the clamping mechanism is in an open state, the lower clamping rod (6) is positioned in the joint of the conveying belt, and the upper surface of the lower clamping rod (6) is not higher than the plane of the conveying belt, so that the conveying of a sewed object is prevented from being hindered; the upper clamping rod fixing and guiding mechanism (5) drives the upper clamping rod to rotate so as to tighten the bag opening while the clamping mechanism clamps the bag opening; the rod shaft of the lower clamping rod (6) is fixed, and a shaft sleeve capable of freely rotating is sleeved on the rod shaft and rotates along with the upper clamping rod;
the clamping rod hanging end locking mechanism (8) is positioned between the upper clamping rod and the lower clamping rod and is arranged on the upright post at the other side of the main frame through a power element; when the clamping mechanism clamps, the pin head of the clamping rod free end locking mechanism (8) is inserted into the free ends of the upper clamping rod and the lower clamping rod to realize locking; when the clamping mechanism is opened, the pin head of the clamping rod free end locking mechanism (8) retracts to make way out of the conveying channel; the taper pin at the pin head part of the clamping rod free end locking mechanism (8) can rotate freely to adapt to the rotation of the clamping rod in a locking state;
the auxiliary baffle (2) is positioned above the woven bag, and two ends of the auxiliary baffle are fixed by the auxiliary baffle and are arranged between two vertical columns of the main frame through the guide mechanism (3); the auxiliary baffle (2) can move up and down, the auxiliary baffle (2) retracts to give way to a conveying channel of the object to be packaged during conveying, and the auxiliary baffle (2) is in place to block the object to be packaged in the object to be sewn during opening sewing so as to prevent the object to be packaged from being pulled into the range of the bag sewing machine to cause obstacles when the bag opening is pulled tightly;
the upper part of the sack closer (9) is arranged on a beam of the main frame through a sack closer fixing and guiding mechanism (10); the inner side of the stitch of the sack closer (9) is perforated, the clamping rod hanging end locking mechanism (8) and the upper clamping rod and the lower clamping rod in a clamping state penetrate through a perforated gap of the sack closer (9), and the sack closer (9) moves along the cross beam and starts or stops sack closer.
2. The bag mouth clamping device for the woven bag seam opening as claimed in claim 1, wherein the free ends of the upper and lower clamping bars are designed with mutually matched outer contours; the free end ends of the upper clamping rod and the lower clamping rod are provided with tapered holes with chamfers, and the head of a pin of the clamping rod free end locking mechanism (8) is provided with a conical surface shape matched with the tapered holes.
3. A clamping device for a bag opening of a woven bag seam according to claim 1 or 2, wherein the pin head of the clamping rod free end locking mechanism (8) is provided with an external guiding mechanism to ensure that the clamping rod free end locking mechanism can be smoothly butted with the upper clamping rod and the lower clamping rod when the positions of the clamping rod free end locking mechanism and the upper clamping rod and the lower clamping rod are deviated.
4. A clamping device for a bag opening of a woven bag seam as claimed in claim 1 or 2, wherein the upper clamping bar (4) is knurled or encapsulated on the surface.
5. A clamping device for a bag opening of a woven bag seam as claimed in claim 3, wherein the surface of the upper clamping rod (4) is knurled or encapsulated.
6. A clamping device for the mouth of a woven bag as claimed in claim 1, 2 or 5, wherein the resistance is measured by a force-sensitive driving element moving up and down the upper and lower clamping rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110455475.XA CN113264234B (en) | 2021-04-26 | 2021-04-26 | Bag mouth clamping device for woven bag seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110455475.XA CN113264234B (en) | 2021-04-26 | 2021-04-26 | Bag mouth clamping device for woven bag seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113264234A CN113264234A (en) | 2021-08-17 |
| CN113264234B true CN113264234B (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110455475.XA Active CN113264234B (en) | 2021-04-26 | 2021-04-26 | Bag mouth clamping device for woven bag seam |
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| Country | Link |
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| CN (1) | CN113264234B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE791232A (en) * | 1971-11-12 | 1973-03-01 | Fischbein Mfg Dave | AUTOMATIC BAG CLOSING MACHINE |
| CN202609138U (en) * | 2012-02-29 | 2012-12-19 | 上海松川远亿机械设备有限公司 | Bag supply mechanism of medium bag machine |
| CN103224044A (en) * | 2013-04-17 | 2013-07-31 | 李秀波 | Bag creasing machine |
| CN206278302U (en) * | 2016-12-22 | 2017-06-27 | 龙泉市菇源自动化设备有限公司 | A kind of bacterium rod horizontal drawing closing device |
| CN207089804U (en) * | 2017-08-14 | 2018-03-13 | 深圳市金胜晖米业有限公司 | A kind of grain packaging system |
| CN107521725B (en) * | 2017-09-18 | 2022-11-01 | 华中科技大学 | Non-film-coated bag-making packaging machine |
| CN207616141U (en) * | 2017-10-23 | 2018-07-17 | 江门市奔胜数控精密制品有限公司 | A kind of hardware workpiece fixture for processing |
| CN108325646A (en) * | 2018-02-08 | 2018-07-27 | 成都灵感元素科技有限公司 | A kind of feed automatic crushing pack all-in-one machine |
| CN208307148U (en) * | 2018-06-12 | 2019-01-01 | 厦门祺安达自动化设备有限公司 | Vertical bacterium bag goes out overseam turn-up mechanism |
| CN110644147A (en) * | 2019-11-13 | 2020-01-03 | 张小华 | Automatic cheese opening sewing machine with pressing and conveying functions |
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2021
- 2021-04-26 CN CN202110455475.XA patent/CN113264234B/en active Active
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| CN113264234A (en) | 2021-08-17 |
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