JP2012236611A - Seed packing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seed packing device capable of stabilizing quality of a seed net to be produced while reducing the labor of a worker.SOLUTION: This seed packing device 1 produces a seed net 4 for packaging seed therein and having both ends heat welded by a seal member, and comprises a delivery part 10 and a first welding part 20. The delivery part 10 is a part for delivering a net member 2. The first welding part 20 is a part for cutting the net member 2 delivered from the delivery part 10, heat welding one end of the cut net member 2 using a heater 22 while a welding seal 23 and a name seal 24 are overlaid with each other, and forming a net bag 3 having one end closed. The seed packing device 1 is provided with a cover 53 covering the delivery part 10 and a feeding mechanism 60 feeding heat generated by the heater 22 of the first welding part 20 into the cover 53.

Description

  The present invention relates to a seed packing device that manufactures a net bag in which seeds are packed inside and both ends of which are thermally welded by seal members, and more particularly to a seed packing device that can stabilize the quality of a manufactured seed net.

  A seed net in which seeds are packed is manufactured by a seed packing device as disclosed in Non-Patent Document 1, for example. As shown in FIG. 8, the seed packing apparatus mainly includes four parts, that is, a delivery part 110, a first welding part 120, a seed charging part 130, and a second welding part (not shown). Here, the operation of each part will be described.

  First, in the delivery unit 110, the net member 102 wound around the reel 111 is delivered by a predetermined length. Next, in the first welded portion 120, the net member 102 to be delivered is cut by the cutter 121, and the rear end portion of the cut net member 102 in the delivery direction is heated by the heater 122 with the seal member 123 overlapping. Welded. Thereby, a net bag with one end closed is formed. Subsequently, in the seed input unit 130, the input device 131 inputs seeds while the upper side of the net bag is open. Finally, at the second welded portion, the other end portion of the net bag that is not closed is thermally welded by the heater in a state where the seal member overlaps. In this manner, a seed net in which seeds are packed is manufactured.

“Seed Center Environment / Agriculture / Manufacturing Plant Japanese Vehicle”, [online], [searched July 15, 2010], Internet <URL: http: // www. n-syaryo. co. jp / business / plant / seedcenter-flow. htm>

  By the way, the time when the seed packing device 101 is operated is generally around November when the harvesting of the seed pods is finished. It is a place with the same situation. For this reason, the seed packing apparatus 101 is operating in a situation where the temperature is two digits in the daytime and one digit in the morning and evening. Here, as shown in FIG. 9, in the delivery unit 110, the net member 102 wound around the reel is not covered with a cover or the like, and is easily affected by outside air. For this reason, for example, when the outside air cools to about 5 degrees in the early morning of a cold day, the net member 102 is cooled from the state when the outside air is at room temperature, and is sent to the first welded portion 120. At this time, in the first welded portion 120, heat is taken from the cooled net member 102 from the seal member 123, and the seal member 123 is not appropriately melted into the net member 102 by the heat of the heater 122. As a result, the seal member 123 may not be properly thermally welded to the rear end portion of the net member 102 in the delivery direction. That is, since the temperature of the net member 102 sent out from the delivery part 110 to the first welding part 120 changes according to the temperature of the outside air, there is a problem that the welding condition of the seal member 123 is different.

  Therefore, conventionally, when the worker looks at the welding condition of the seal member 123 and the seal member 123 is not properly thermally welded, the worker increases the set temperature of the heater 122 to increase the set temperature of the heater 122. Was dissolved properly. In addition, when the temperature is too high, the net member 102 is melted by the heat of the heater 122, so that the worker needs to lower the set temperature of the heater 122. However, in these cases, it is necessary for the worker to constantly monitor the welding condition of the seal member 123, and the labor of the worker is great. In addition, the welding condition of the seal member 123 varies depending on the skill of the worker, and the quality of the produced seed net is not stable.

  In order to solve the above-described problems, an object of the present invention is to provide a seed packing device that can reduce the labor of an operator and can stabilize the quality of a produced seed net.

  The seed packing apparatus according to the present invention cuts the net member that is sent out from the net member and the net member that is sent out from the feed unit, and heat-welds one end of the cut net member using a heater in a state where the seal member overlaps. A first welding part that forms a net bag with one end closed, a seed introduction part that introduces seeds into the net bag, and the other end of the net bag into which the seeds are introduced. A cover for covering the delivery part, and a feed mechanism for sending heat released from the heater of the first weld part into the cover. To do.

Further, in the seed packing device according to the present invention, the feeding mechanism includes a heat exchanger that heats ambient air by exchanging heat released from the heater, and a cover that covers the air warmed by the heat exchanger. It is preferable to have an intake fan for inhaling inside.
Further, in the seed packing device according to the present invention, the feeding mechanism detects the temperature of the net member of the delivery unit, and drives the suction fan based on the temperature detected by the temperature detection device. An electronic control device for controlling the electronic control device, wherein the electronic control device drives the suction fan when the temperature detected by the temperature detection device is lower than a set temperature, and the temperature detected by the temperature detection device is When the temperature is higher than the set temperature, the suction fan is preferably stopped.
Further, in the seed packing device according to the present invention, the feeding mechanism has a discharge fan that is controlled by the electronic control device and exhausts the air in the cover, and the electronic control device is configured so that the electronic control device is in the normal state. It is preferable that driving of the exhaust fan is stopped and the exhaust fan is driven when the temperature detected by the temperature detection device is higher than a reference temperature.

Moreover, the seed packing apparatus which concerns on this invention WHEREIN: It is preferable that the said sending-in mechanism has the interruption | blocking apparatus which interrupts | blocks the movement of the air between the said delivery part and the said 1st welding part.
Moreover, the seed packing apparatus which concerns on this invention WHEREIN: The said cover may cover the said delivery part, the said 1st welding part, the said seed injection | throwing-in part, and the said 2nd welding part whole.
Moreover, in the seed packing apparatus according to the present invention, a second cover that covers the second welded portion, and a second feed mechanism that feeds heat released by a heater provided in the second welded portion into the second cover. , May be provided.

Therefore, according to the seed packing apparatus of the present invention, the cover covers the delivery part, and the feeding mechanism feeds heat released by the heater of the first welding part into the cover. For this reason, for example, even when the outside air is cooled to about 5 degrees in the early morning of a cold day, the first welding is performed in a state where the net member of the delivery unit is warmed and the outside air is at room temperature. Sent to the department. Therefore, in the first welding portion, the seal member is appropriately melted into the net member by the heat of the heater, and one end portion of the net member is appropriately heat-welded. As a result, it is possible to prevent variations in the welding condition of the sealing member according to the temperature of the outside air, and it is possible to stabilize the quality of the produced seed net.
In particular, according to the seed packing apparatus of the present invention, since the feeding mechanism warms the inside of the cover using the heat released by the heater of the first welding part, it is not necessary to newly provide a heater, and the feeding mechanism is configured at low cost. can do. Furthermore, it is not necessary for the worker to adjust the set temperature of the heater while looking at the welding condition of the seal member, and the labor of the worker can be reduced.

In 1st Embodiment, it is a schematic whole block diagram of the seed packing apparatus which is not covered with the cover. In the seed packing apparatus covered with the cover, it is sectional drawing along the XX line of FIG. It is an enlarged view of the delivery part and the 1st welding part which were shown in FIG. In the seed packing apparatus covered with the cover, it is the front view seen from the Y direction of FIG. It is the top view which showed the state in which the sending part was covered with the cover and the 1st welding part was not covered with the cover. In 2nd Embodiment, the delivery part, the 1st welding part, the seed injection | throwing-in part, and the whole 2nd welding part are the whole block diagrams equivalent to FIG. 1 which showed the state covered with the cover. In 3rd Embodiment, it is the whole block diagram equivalent to FIG. 1 which showed the state by which the delivery part was covered with the cover and the 2nd welding part was covered with the 2nd cover. In the conventional seed packing apparatus, it is sectional drawing equivalent to FIG. In the conventional seed packing apparatus, it is a front view equivalent to FIG.

  The seed packing apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic overall configuration diagram of a seed packing device 1 that is not covered with a cover. FIG. 2 is a cross-sectional view taken along line XX of FIG. 1 in the seed packing device 1 covered with a cover. In FIG. 1, the moving direction of the net member 2 and the moving direction of the net bag 3 are indicated by black arrows. The seed packing device 1 manufactures a seed net 4 in which seeds are packed. As shown in FIG. 1, the seed packing device 1 mainly includes a delivery unit 10, a first welding unit 20, a seed input unit 30, a first unit. Two welded portions 40 are provided. In this embodiment, the net bag 3 is one in which only one end is thermally welded with a seal member, and the seed net 4 is one in which both ends are thermally welded with a seal member.

  First, the sending unit 10 will be described. As shown in FIGS. 1 and 2, the delivery unit 10 is a part that sends out the net member 2 to the first welding unit 20 every predetermined length. The net member 2 has a length in the longitudinal direction of about 35 m and a width of 30 cm, and has a cylindrical shape with both ends in the longitudinal direction opened. The net member 2 is wound around a reel 11 (see FIG. 2) in a state where the upper surface side and the lower surface side are overlapped.

  Next, the 1st welding part 20 is demonstrated. As shown in FIGS. 1 and 2, the first welding part 20 cuts the net member 2 sent out from the sending part 10, and heats the rear end part (one end part) of the cut net member 2 in the sending direction. It is the part to be welded. The first welding portion 20 includes a cutter 21, a heater 22, a welding seal 23 and a name seal 24 as seal members, and a cylinder device 25.

  Here, FIG. 3 is an enlarged view of the delivery unit 10 and the first welding unit 20 shown in FIG. As shown in FIG. 3, the cutter 21 has an upper blade portion 21a and a lower blade portion 21b, and the upper blade portion 21a moves up and down with respect to the lower blade portion 21b by the cylinder device 25. It has become. The heater 22 has an upper heat radiating portion 22a and a lower heat radiating portion 22b, and the upper heat radiating portion 22a moves up and down with respect to the lower heat radiating portion 22b by the cylinder device 25. The welding seal 23 is wound around a reel 26 (see FIG. 2), and is sent so as to overlap the welded portion of the net member 2 from above. The name seal 24 is wound around a reel 27 (see FIG. 2) and is fed so as to overlap the welded portion of the net member 2 from below.

  The first welded portion 20 operates as follows. The net member 2 delivered from the delivery unit 10 passes through the cutter 21 and the heater 22, and both ends of the tip of the net member 2 are held by the slide mechanism 28 (see FIG. 1). After holding the net member 2, the slide mechanism 28 slides toward the seed throwing portion 30 side and pulls out the tip of the net member 2 from the cutter 21 by a predetermined amount. And the net member 2 is cut | disconnected by the downward movement of the upper blade part 21a in the state which the welding seal | sticker 23 and the name seal | sticker 24 overlapped. At this time, the welding seal 23 and the name seal 24 are melted into the net member 2 by heat released from the upper heat radiating portion 22 a and the lower heat radiating portion 22 b of the heater 22. Thereby, the rear end part of the cut | disconnected net member 2 in the delivery direction is heat-welded, and the net bag 3 with one end part closed is formed.

  Next, the seed input unit 30 will be described. As shown in FIGS. 1 and 2, the seed input unit 30 is a part for inputting seeds in a state where the upper side of the net bag 3 is open. The seed charging unit 30 includes an opening mechanism 31, a chuck mechanism 32, a charging device 33, and an automatic weighing device 34.

  The seed input unit 30 operates as follows. The net bag 3 is sent to the opening mechanism 31 while being held by the slide mechanism 28, and the opening mechanism 31 opens the tip of the net bag 3. The opened net bag 3 is held by the chuck mechanism 32 and sent to the lower side of the charging device 33. Thereafter, the feeding device 33 feeds a predetermined amount of seed (for example, 4 kg of seed meal) measured by the automatic weighing device 34 in a state where the upper side of the net bag 3 is open.

  Finally, the second welded portion 40 will be described. The 2nd welding part 40 is a part which heat-welds the upper end part (other end part) of the net bag 3 which is not closed, as shown in FIG. The second welded portion 40 includes a belt conveyor 41, a left side seal member 42 and a right side seal member 43, a heater 44, and a guide member 45. The left side seal member 42 and the right side seal member 43 are respectively sent to the tip of the heater 44 along the guide member 45, and each tip is thermally welded to each other by the heat of the heater 44. The heater 44 has two heating portions 44 a and 44 b extending in the moving direction of the net bag 3, and the heating portions 44 a and 44 b are movable so as to sandwich the upper end portion of the net bag 3.

  The second welded portion 40 operates as follows. The net bag 3 into which the seeds have been introduced is sent to the heater 44 side by the chuck mechanism 32 and the belt conveyor 41, and comes into contact with the welded portions at the tips of the left seal member 42 and the right seal member 43. The net bag 3 moves between the heating portions 44a and 44b while hooking the welded portions of the seal members 42 and 43 described above, and the left seal member 42 and the right seal member 43 are pulled out with this movement. Thus, after the net bag 3 has moved by a predetermined amount, the heating parts 44 a and 44 b sandwich the upper end of the net bag 3. At this time, the left side seal member 42 and the right side seal member 43 are melted into the net member 3 by heat released from the heating portions 44 a and 44 b of the heater 44. Thereby, the upper end part of the net member 3 is heat-welded, the seed net 4 in which the seeds are packed inside and both end parts are heat-welded is manufactured.

  By the way, as shown in FIG.8 and FIG.9, in the sending part 110 of the conventional seed packing apparatus 101, the net member 102 wound around the reel is not covered by the cover, and is easily influenced by the outside air. For this reason, for example, when the outside air cools to about 5 degrees in the early morning of a cold day, the net member 102 is cooled from the state when the outside air is at room temperature, and is sent to the first welded portion 120. At this time, in the first welded portion 120, heat is taken from the cooled net member 102 from the seal member 123, and the seal member 123 is not appropriately melted into the net member 102 by the heat of the heater 122. As a result, the seal member 123 may not be appropriately thermally welded to the rear end portion of the cut net member 102 in the delivery direction. That is, since the temperature of the net member 102 sent out from the delivery part 110 to the first welding part 120 changes according to the temperature of the outside air, there is a problem that the welding condition of the seal member 123 is different.

  Therefore, in this embodiment, in order to cope with the above-described problem, as shown in FIG. 2, the net member 2 sent out from the delivery unit 10 to the first welding unit 20 is warmed, and the welding seal 23 as a sealing member is used. And the variation in the welding condition of the name seal 24 can be prevented. A configuration for dealing with the above problem will be described below.

  FIG. 4 is a front view of the seed packing device 1 covered with a cover as seen from the Y direction of FIG. As shown in FIGS. 2 and 4, the first welded portion 20 is covered with a cover 51, the seed throwing portion 30 is covered with a cover 52, and the second welded portion 40 is covered with a cover (not shown). . Furthermore, in this embodiment, the delivery unit 10 is also covered with a cover 53. The cover 53 surrounds the net member 2 wound around the reel 11 and makes it easy to warm the internal air. In this way, in addition to the first welding unit 20, the seed charging unit 30, and the second welding unit 40, the delivery unit 10 is hardly affected by the outside air.

  The cover 53 of the delivery unit 10 is made of a heat insulating member such as glass wool, for example, in order to easily store heat inside. Further, the cover 53 is attached so as to be detachable from the cover 51 of the first welded portion 20 at the opening portion. This is because the cover 53 is removed and replaced with a new net member 2 when all the net members 2 wound around the reel 11 of the sending unit 10 are sent out.

  In this embodiment, as shown in FIG. 3, a feed mechanism 60 that feeds heat released from the heater 22 of the first welded portion 20 into the cover 53 is provided. The feeding mechanism 60 is configured to send warm air into the cover 53 using heat released from the heater 22 of the first welded portion 20, and includes a heat exchanger 61, a suction fan 62, and a communication pipe 63. 64 (see FIG. 5), a temperature sensor 65 (temperature detection device), an air curtain 66 (blocking device), a discharge fan 67, and an electronic control device 68.

  The heat exchanger 61 makes it easy to extract heat released from the lower heat radiating portion 22b of the heater 22. Specifically, the heat exchanger 61 exchanges heat between the heat released from the lower heat radiating portion 22b of the heater 22 and the surrounding air so as to warm the temperature of the surrounding air to about 50 degrees, for example. It has become. The heat exchanger 61 has a plate shape, and is integrally assembled with the lower heat radiating portion 22b of the heater 22, as shown in FIG. Here, the heat released from the lower heat radiating portion 22b is set to a constant temperature of about 150 to 200 degrees and is very high. However, as shown in FIG. 3, the portion from which heat is released from the lower heat radiating portion 22b is very small, and it is difficult to directly extract heat from the lower heat radiating portion 22b. Therefore, by using this heat exchanger 61, the heat released from the lower heat radiating portion 22b is taken out, and the surrounding air is easily warmed.

  The suction fan 62 is for sucking the air warmed by the heat exchanger 61 into the cover 53. Here, FIG. 5 is a plan view of a state in which the cover 53 covers the delivery unit 10 and the cover 51 (see FIG. 2) is removed from the first welded unit 20. As shown in FIG. 5, the air warmed by the heat exchanger 61, that is, warm air is sucked into the cover 53 through the communication pipe 64. As a result of such an air flow, the air in the cover 53 flows from the suction hole 63a at the end of the communication pipe 63 to the periphery of the heat exchanger 61 through the communication pipe 63, and again in the cover 53. It comes to circulate to. In this way, the air in the cover 53 is circulated to increase the thermal efficiency. As shown in FIG. 3, the suction fan 62 is connected to the electronic control device 68 and is driven in accordance with a control command from the electronic control device 68.

  The temperature sensor 65 detects the temperature of the net member 2 wound around the reel 11 of the delivery unit 10 (hereinafter referred to as “net temperature T”), and is attached to the cover 53. The temperature sensor 65 is a non-contact type temperature sensor for the net member 2, but may be a contact type temperature sensor. The net temperature T detected by the temperature sensor 65 is input to the electronic control device 68, and the electronic control device 68 controls the driving of the suction fan 62 based on the net temperature T. Specifically, when the net temperature T is lower than a predetermined set temperature t1 between 15 degrees and 20 degrees, the electronic control unit 68 drives the suction fan 62 until the net temperature T reaches the set temperature t1. On the other hand, when the net temperature T is higher than the set temperature t1, the electronic control unit 68 stops driving the suction fan 62 until the net temperature T reaches the set temperature t1.

  The air curtain 66 is for blocking the movement of air between the delivery unit 10 and the first welding unit 20. As shown in FIG. 3, the air curtain 66 is assembled between the upper wall portion of the cover 53 and the cover 51 so as to send air downward. Thereby, as shown by the phantom line in FIG. 3, an air wall Ai is formed, and the air (warm air) sucked into the cover 53 is difficult to escape to the first welded portion. As a result, the hot air circulates in the cover 53, and the net temperature T is easily maintained at the set temperature t1.

  The discharge fan 67 is for discharging warm air outside the cover 53, and is assembled to the lower wall portion of the cover 53. The discharge fan 67 is connected to the electronic control device 68 and is driven in accordance with a control command from the electronic control device 68. Specifically, the electronic control unit 68 stops the driving of the exhaust fan 67 at the normal time. However, the electronic control device 68 drives the exhaust fan 67 when the net temperature T is higher than the reference temperature s1 by the air (hot air) sucked into the cover 53. The reference temperature s1 is a temperature that is sufficiently higher than the set temperature t1. In this way, when the net temperature T becomes too higher than the set temperature t1, the warm air is discharged out of the cover 53, and the net temperature T can be quickly lowered.

The effect of the seed packing apparatus 1 comprised as mentioned above is demonstrated.
According to the seed packing device 1 of this embodiment, the cover 53 covers the delivery unit 10, and the feeding mechanism 60 sends the heat released from the heater 22 of the first welding unit 20 into the cover 53. Specifically, the heat exchanger 6 warms the surrounding air by heat exchange between the heat released from the lower heat radiating portion 22b of the heater 22 and the surrounding air, and the suction fan 62 Warmed air (warm air) is sucked into the cover 53 through the communication pipe 64. Then, the electronic control unit 68 controls the driving of the suction fan 62 so that the net temperature T becomes the set temperature t1. For this reason, for example, even when the outside air is cooled to about 5 degrees in the early morning of a cold day, the net member 2 of the delivery unit 10 is warmed, and in the state where the outside air is at room temperature, 1 It is sent out to the welding part 20. Accordingly, in the first welded portion 20, the weld seal 23 and the name seal 24 are appropriately melted into the net member 2 by the heat of the heater 22, and one end of the net member 2 is appropriately heat welded. As a result, it is possible to prevent variations in the welding condition of the welding seal 23 and the name seal 24 according to the temperature of the outside air, and to stabilize the quality of the produced seed net 4.

  In particular, according to the seed packing device 1 of this embodiment, the feeding mechanism 60 warms the inside of the cover 53 using heat released by the heater 22 of the first welded portion 20. That is, the inside of the cover 53 is heated using the heater 22 which is an existing component member. For this reason, it is not necessary to provide a new heater, and the feeding mechanism 60 can be configured at low cost.

By the way, in the conventional seed packing apparatus 101 shown in FIG.8 and FIG.9, when the worker is seeing the welding condition of the sealing member 123 and the sealing member 123 is not thermally welded appropriately, The sealing member 123 was appropriately melted by increasing the set temperature of the heater 122. In addition, when the temperature is too high, the net member 102 is melted by the heat of the heater 122, so that the worker needs to lower the set temperature of the heater 122. However, in these cases, it is necessary for the worker to constantly monitor the welding condition of the seal member 123, and the labor of the worker is great.
On the other hand, in the seed packing device 1 of this embodiment, the set temperature of the heater 22 is constant and does not need to be changed, and the net temperature T is adjusted to the set temperature t1. For this reason, it is not necessary for an operator to monitor the welding condition of the sealing members (the welding seal 23 and the name seal 24) as in the prior art, and the labor of the operator can be reduced.

  Next, a second embodiment will be described. FIG. 6 is a schematic overall configuration diagram of the seed packing device 1 according to the second embodiment. As shown in FIG. 6, the entire delivery unit 10, first welding unit 20, seed charging unit 30, and second welding unit 40 are covered with a cover 54. In the second embodiment, a feed mechanism 60 (not shown) feeds heat released from the heater 22 of the first welded portion 20 into the entire cover 54. Specifically, using the heater 22 of the first welded portion 20 as a heat source, the second welded portion 40 is connected to the heat exchanger 61, the suction fan 62, the communication pipes 63 and 64, the temperature sensor 65, the air curtain in the first embodiment. 66, a discharge fan 67, and members corresponding to the electronic control device 68 are provided as appropriate. Thereby, the net temperature T is adjusted to the set temperature t1, and the temperature of the net bag 3 of the second welded portion 40 is adjusted to the set temperature t1.

  According to the second embodiment, even when the outside air is cooled to about 5 degrees in the early morning of a cold day, for example, the weld seal 23 and the name seal 24 are heated by the heater 22 in the first weld portion 20. Thus, the one end of the net member 2 can be appropriately heat-welded by being appropriately melted into the net member 2. Further, in the second welded portion 40, the left seal member 42 and the right seal member 43 are appropriately melted into the net bag 3 by the heat of the heater 44, and the other end portion of the net bag 3 (the other end portion of the net member 2). Can be appropriately heat-welded. Other functions and effects of the second embodiment are the same as the functions and effects of the first embodiment, and a description thereof will be omitted.

  Subsequently, the third embodiment will be described. FIG. 7 is a schematic overall configuration diagram of the seed packing device 1 according to the third embodiment. As shown in FIG. 7, the delivery part 20 is covered with the cover 53 in the first embodiment, and the second welded part 40 is covered with the second cover 55. In the third embodiment, a feed mechanism (not shown) similar to that of the first embodiment is provided, and a second feed mechanism (not shown) that feeds heat released by the heater 44 of the second welded portion 40 into the second cover 55 ( (Not shown). Specifically, using the heater 44 of the second welded portion 40 as a heat source, the heat exchanger 61, the suction fan 62, the communication pipes 63 and 64, the temperature sensor 65, the air curtain in the first embodiment are added to the second welded portion 40. 66, a discharge fan 67, and members corresponding to the electronic control device 68 are provided as appropriate. Thereby, the net temperature T is adjusted to the set temperature t1, and the temperature of the net bag 3 of the second welded portion 40 is adjusted to the second set temperature t2.

  According to the third embodiment, even when the outside air is cooled to about 5 degrees, for example, in the early morning on a cold day, the welding seal 23 and the name seal 24 are heated by the heater 22 in the first welding portion 20. Thus, the one end of the net member 2 can be appropriately heat-welded by being appropriately melted into the net member 2. Further, in the second welding portion 40, the left side seal member 42 and the right side seal member 43 are appropriately melted into the net bag 3 by the heat of the heater 44, and the other end portion of the net bag 3 is appropriately heat welded. it can. Other functions and effects of the third embodiment are the same as the functions and effects of the first embodiment, and a description thereof will be omitted.

The seed packing device according to the present invention has been described above. However, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention.
For example, although the exhaust fan 67 is provided in each embodiment, an exhaust hole may be formed in the cover 53 instead of the exhaust fan 67. Further, the discharge fan 67, the discharge hole, and the like need not be provided.
Further, in each embodiment, the air curtain 66 is provided as a blocking device that blocks the movement of air between the delivery unit 10 and the first welding unit 20, but the configuration of the blocking device can be changed as appropriate, for example, It may be a vinyl curtain. Moreover, it is not necessary to provide a shut-off device.
In each embodiment, the feeding mechanism 60 includes the heat exchanger 61 and the suction fan 62. However, the configuration of the feeding mechanism 60 can be changed as appropriate, and includes the heat exchanger 61 and the suction fan 62. There may be no configuration. In this case, the warming-up time of the heater 22 is lengthened, and the heat released from the heater 22 is sent directly into the cover 53 through the communication pipe 64.
Further, in each embodiment, the net temperature T is adjusted to be the set temperature t1 by directly measuring the temperature of the net member 2, but the net temperature T is measured by measuring the temperature around the net member 2. May be adjusted to be the set temperature t1.

DESCRIPTION OF SYMBOLS 1 Seed packing apparatus 2 Net member 3 Net bag 4 Seed net 10 Sending part 20 1st welding part 21 Cutter 22 Heater 23 Welding seal 24 Name seal 30 Seed throwing part 40 Second welding part 42 Left side sealing member 43 Right side sealing member 44 Heater 53 Cover 54 Cover 55 Second cover 60 Feed mechanism 61 Heat exchanger 62 Suction fan 63, 64 Communication pipe 65 Temperature sensor 66 Air curtain 67 Exhaust fan 68 Electronic control unit

Claims (7)

A delivery section for delivering a net member;
A first welding part that cuts the net member delivered from the delivery part and heat-welds one end of the cut net member with a heater in a state where the sealing member overlaps to form a net bag with one end closed. When,
A seed introduction part for introducing seeds into the net bag;
In a seed packing device comprising: a second welding portion that thermally welds the other end portion of the net bag into which the seeds have been introduced.
A cover covering the delivery section;
A seed packing apparatus, comprising: a feed mechanism that feeds heat released from the heater of the first welding portion into the cover. In the seed packing device according to claim 1,
The feeding mechanism is
A heat exchanger that heats the surrounding air by exchanging heat released by the heater;
A seed packing device comprising: an intake fan that sucks air heated by the heat exchanger into the cover. In the seed packing device according to claim 2,
The feeding mechanism is
A temperature detecting device for detecting the temperature of the net member of the delivery unit;
An electronic control unit that controls the driving of the suction fan based on the temperature detected by the temperature detection device;
The electronic control device drives the suction fan when the temperature detected by the temperature detection device is lower than a set temperature, and drives the suction fan when the temperature detected by the temperature detection device is higher than the set temperature. A seed packing device characterized by stopping the seed. In the seed packing device according to claim 3,
The feeding mechanism is
The electronic control device has a discharge fan that is controlled in driving and discharges air in the cover,
The said electronic control apparatus stops the drive of the said discharge fan at normal time, and drives the said discharge fan when the temperature detected by the said temperature detection apparatus is higher than a reference temperature, The seed packing apparatus characterized by the above-mentioned. In the seed packing device according to any one of claims 1 to 4,
The feeding mechanism is
A seed packing device comprising: a shut-off device that shuts off movement of air between the delivery unit and the first welding unit. In the seed packing apparatus in any one of Claims 1 thru | or 5,
The said cover covers the whole of the said delivery part, the said 1st welding part, the said seed injection | throwing-in part, and the said 2nd welding part, The seed packing apparatus characterized by the above-mentioned. In the seed packing apparatus in any one of Claims 1 thru | or 5,
A second cover covering the second welded portion;
A seed packing apparatus, comprising: a second feeding mechanism that feeds heat released from a heater provided in the second welding portion into the second cover.

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