JPH0617464U - Nursery hole punching tool with heat insulation sheet - Google Patents

Abstract

(57) [Summary] [Purpose] When punching holes in a vinyl sheet on a hotbed, collect the cut sheet pieces easily and reliably. This prevents environmental pollution due to leaving the sheet piece. [Structure] A handle 2 is provided at an upper end of a frame 1, and a perforated cylinder 3 is provided at a lower end of the frame 1. The arrow body 13 is provided on the frame 1 via the horizontal rod 11 and the like. This arrow body 13 has a head 16
have. The baggage 16 is located in the lower part of the perforated tube 3. At the time of use, the perforated tube 3 is applied onto the vinyl sheet of the nursery and pushed down, and a predetermined portion of the vinyl sheet is cut off. Each time a hole is punched, the cut sheet piece is pierced by the arrow body 13 and held on the handle portion 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hole punching tool for making a hole in a nursery having a heat insulating sheet for sowing and planting.

[0002]

[Prior art]

 When seeding or planting seedlings on a nursery covered with a vinyl sheet for heat retention, holes must be made in the vinyl sheet at the seeding or planting part. Conventionally, for this drilling, a drilling tool as shown in FIGS. 4 and 5, for example, has been used. In this conventional punching tool, a handle 2 is fixed to the upper ends of a pair of rod-shaped frames 1, and a punching cylinder 3 is fixed to the lower end of the frame 1. The perforated cylinder 3 has a substantially cylindrical shape with the vertical direction as the axial direction, and the lower ends of the both frames 1 are fixed to the upper end of the outer peripheral surface thereof. The perforated tube 3 has a taper shape in which the diameter gradually decreases downward. Moreover, the lower end of the perforated tube 3 is a concave and convex cutting blade 4 whose lower end is pointed downward. Then, when making a hole, the operator holds the handle 2 with both hands, puts the hole making cylinder 3 on a predetermined position on the vinyl sheet 6, and pushes down the whole hole making tool. As a result, as shown in FIG. 5, the perforated tube 3 bites into the soil 7 and the vinyl sheet 6 is cut out in a circular shape.

[0003]

[Problems to be solved by the device]

 However, when a hole is made in the nursery covered with a heat insulating sheet such as a vinyl sheet 6 by the conventional punching tool, the sheet piece 6a cut out in a circular shape after the punching is held especially by the punching tool. Instead, it is usually left as it is near the nursery. However, if the cut sheet pieces 6a are scattered in or around the soil 7, there is a problem that it may cause pollution as industrial waste. On the other hand, in order to prevent this, the cut sheet pieces 6a must be scraped by hand one by one, which is very troublesome.

The present invention is intended to solve such a problem, and a nursery bed having a heat insulating sheet that can easily and surely recover cut sheet pieces and prevent environmental pollution due to leaving the sheet pieces. The purpose of the present invention is to provide a hole punching tool.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a hole-piercing tool for a nursery bed having a heat-insulating sheet according to the present invention comprises: a hole-piercing tube having a vertical cutting direction and a cutting blade at a lower end; And a arrow body having a head portion at the lower end located at.

[0006]

[Action]

 With the hole-piercing device for a nursery bed having the heat-insulating sheet of the present invention, when making a hole in the nursery bed covered with the heat-insulating sheet, the heat-insulating sheet is applied with a hole-piercing tube from above and the hole-causing tube is pushed down. Along with this, the perforation tube bites into the soil, and the cutting blade at the lower end of the perforation tube cuts out a predetermined portion of the heat insulating sheet. Along with this, the arrow body inside the perforated cylinder pierces the cut sheet piece from above, and the sheet piece is caught and held on the barb portion at the lower end of the arrow body that has penetrated through the sheet piece. Each time a hole is drilled, a newly cut sheet piece will join under the previously cut sheet piece on the head, and the sheet piece will not be left in the soil or in the surrounding area. . The cut-out sheet pieces can be appropriately collected later and removed from the arrow body for disposal.

[0007]

【Example】

 Hereinafter, a perforating tool for a nursery bed having a heat insulating sheet according to the present invention will be described with reference to FIGS. 1 to 3. The parts common to the above-described punching tool shown in FIGS. 4 and 5 are designated by the same reference numerals, the description thereof will be omitted, and different points will be mainly described. A horizontal rod 11 is fixedly installed on the lower part of both frames 1. A bearing cylinder 12 is vertically fixed to the horizontal rod 11, and a rod-shaped arrow handle 14 of an arrow body 13 whose vertical direction is an axial direction is penetrated through the bearing cylinder 12 so as to be vertically movable. The arrow handle 14 can be fixed to the bearing tube 12 at any position with a wing bolt 15. Further, a barb portion 16 is integrally provided on the lower end of the arrow handle 14. The baggage portion 16 is sharpened downward, and both sides of the upper edge are inclined edges 16a that are slightly inclined in a direction in which they rise as they move away from the arrow head 14.

Next, the operation of the above configuration will be described. Although the height of the arrow body 13 with respect to the punching cylinder 3 can be arbitrarily adjusted, the barb portion 16 is located in the lower portion of the punching cylinder 3 and the arrow body 13 is fixed to the punching cylinder 3. Then, in order to make a hole in the seeding or planting part in the nursery covered with the vinyl sheet 6 as a heat insulating sheet, the operator holds the handle 2 with both hands and puts the perforated tube 3 at a predetermined position on the vinyl sheet 6. And press down on the entire punch. As a result, as shown in FIG. 3, the perforating cylinder 3 bites into the soil 7, and the vinyl sheet 6 is cut into a circular shape by the cutting blade 4 at the lower end of the perforating cylinder 3. Along with this, the arrow body 13 pierces the cut sheet piece 6a from above, and the barb portion 16 penetrates the sheet piece 6a. After that, the sheet piece 6a is caught and held on the baggage portion 16. Then, each time a hole is punched, the newly cut sheet piece 6a joins below the previously cut sheet piece 6a on the head portion 16. It should be noted that both sides of the upper edge of the barb 16 are inclined edges 16a that are inclined in a direction that rises as they move away from the arrow head 14, and the tips of these inclined edges 16a pierce the sheet piece 6a. 6a is securely held on the head portion 16 and does not easily fall off the arrow body 13. Then, the sheet pieces 6a that are cut out and piled up on the handle portion 16 of the arrow body 13 are appropriately collectively removed later from the arrow body 13 and discarded.

As described above, according to the configuration of the above-described embodiment, by providing the arrow body 13 in the perforating cylinder 3, it is possible to reliably collect the cut sheet piece 6a at the time of perforating, and The strip 6a is not left in the soil 7 or the surrounding area. Therefore, environmental pollution due to leaving the sheet piece 6a, which is an industrial waste, can be prevented. Further, as described above, the cut-out sheet piece 6a can be collected and disposed of very easily without any trouble, and the work efficiency is good.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, the shapes of the frame, the handle, etc. are not limited to those in the above embodiment. Further, the structure of the arrow body is not limited to that of the above-described embodiment, and the arrow body can be directly fixed and provided in the perforated cylinder.

[0011]

[Effect of device]

 According to the present invention, in a nursery hole punching tool having a heat insulating sheet, in addition to the punching tube having the cutting blade at the lower end, the arrow body having the barbed portion at the lower end located in the drilling tube is provided. By holding the cut sheet pieces on the barbs of the arrow body when the holes are punched, the cut sheet pieces can be collected easily and surely, and environmental pollution due to leaving the sheet pieces can be prevented.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a nursery hole punching tool having a heat insulating sheet according to the present invention.

FIG. 2 is a lower perspective view in the vicinity of the above-mentioned perforated cylinder.

FIG. 3 is a cross-sectional view explaining the same effect.

FIG. 4 is a perspective view showing an example of a conventional nursery hole punching tool having a heat insulating sheet.

FIG. 5 is a cross-sectional view explaining the same effect.

[Explanation of symbols]

 3 Drilling cylinder 4 Cutting blade 6 Vinyl sheet (heat insulation sheet) 13 Arrow body 16 Head part

Claims (1)

[Scope of utility model registration request] 1. A drilling cylinder having an up-down direction as an axial direction and a cutting blade at a lower end, and a arrow body having a barb portion at a lower end located in the drilling cylinder with an up-down direction as an axial direction. A nursery hole punching tool having a characteristic heat insulating sheet.