CN113715273A

CN113715273A - Water nozzle mold for coffee machine

Info

Publication number: CN113715273A
Application number: CN202111297766.7A
Authority: CN
Inventors: 谢传海; 王东平; 谢俊祯; 戴振朋
Original assignee: Guangdong Xinshuo Precision Technology Co ltd
Current assignee: Guangdong Xinshuo Precision Technology Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2021-11-30

Abstract

The invention relates to the technical field of mould manufacturing, in particular to a water nozzle mould for a coffee machine, which comprises a first mould core of a first mould plate component, a second mould core of a second mould plate component and a core-pulling component, wherein the first mould core and the second mould core are matched to form a water nozzle cavity for manufacturing the water nozzle for the coffee machine, the water nozzle cavity comprises a vertical cavity and two horizontal cavities which are communicated and arranged in a V shape, the core-pulling component comprises an inclined guide pillar arranged on the first mould plate component and an inclined embedding needle arranged on a slide seat in a sliding manner, the inclined guide pillar is inserted into a guide inclined hole of the slide seat, the front part of the inclined embedding needle respectively penetrates through an insertion hole of the second mould core to be inserted into the corresponding horizontal cavity, and the slide seat drives the inclined embedding needle to be separated from the horizontal cavity, so that the moving direction of the inclined embedding needle is overlapped with the central axis of the corresponding horizontal cavity. The two inclined embedding needles move along with the movement of the position seat and the first template component, and the two inclined embedding needles are automatically drawn out in an inclined shape like a Chinese character 'ba', so that the water nozzle for the coffee machine is easy to form, the difficulty in manufacturing the mould is reduced, and the production cost is reduced.

Description

Water nozzle mold for coffee machine

Technical Field

The invention relates to the technical field of mold manufacturing, in particular to a water nozzle mold for a coffee machine.

Background

The water nozzle for the coffee machine at present is similar to a three-way pipe fitting in structure, and comprises a vertical water outlet pipe and two water inlet pipes, wherein one ends of the two water inlet pipes are communicated with the top of the water outlet pipe, and the two water inlet pipes are arranged in a V shape. When this leads to making the water injection well choke for coffee machine through the mould, traditional mould directly walk the mode of loosing core and can't satisfy the manufacturing shaping requirement of two inlet tubes.

Disclosure of Invention

The invention aims to provide a water nozzle mould for a coffee machine, which is easy to loose core.

The object of the invention is thus achieved.

A water nozzle mould for a coffee machine comprises a first template component, a second template component and a core pulling component, wherein the first template component comprises a first mould core, the second template component comprises a second mould core, a water nozzle cavity for manufacturing the water nozzle for the coffee machine is formed after the first mould core and the second mould core are combined, the water nozzle cavity comprises a vertical cavity and two horizontal cavities, the top of the vertical cavity is communicated with the front parts of the two horizontal cavities, the front parts of the two horizontal cavities are communicated and arranged in a V shape, the core pulling component comprises an inclined guide pillar, an inclined embedding needle and a row seat, the inclined guide pillar is arranged on the first template component, the row seat is arranged on the second template component in a sliding manner, a guide inclined hole is arranged on the row seat, the inclined guide pillar is inserted into the guide inclined hole, the first template component drives the inclined guide pillar to move, the inclined guide pillar pushes the row seat to slide on the second template component, and the second mould core is provided with an inserting hole corresponding to each horizontal cavity, the patchhole sets up with the horizontal cavity intercommunication and the axis coincidence that correspond, and the rear portion of two oblique needles of inlaying slides respectively and sets up in the position seat near second mould benevolence one side, and the anterior portion of two oblique needles of inlaying passes the patchhole respectively and inserts in the horizontal cavity that corresponds, and just two oblique needle fronts offset at vertical cavity top, and the position seat of going slides outward to second template subassembly, and the position seat of going drives two oblique needles of inlaying and breaks away from horizontal cavity, makes oblique needle moving direction and the axis coincidence that corresponds horizontal cavity set up. According to the water nozzle mould for the coffee machine, the first template component can drive the travelling seat to move when moving, the two inclined insert needles move along with the travelling seat, the two inclined insert needles are automatically inclined in a splayed manner and are drawn out, so that the water nozzle mould for the coffee machine is easy to form, the mould manufacturing difficulty is reduced, and the production cost is reduced.

The technical scheme can be further perfected as follows.

More specifically, a guide sliding groove is formed in one side, close to the second die core, of the slide seat, a guide sliding seat is arranged in the guide sliding groove and corresponds to the rear portion of each inclined insert pin, and the inclined insert pins are obliquely arranged on the guide sliding seats, so that the two inclined insert pins are arranged in a V shape. The inclined insert pin can slide more easily in the second mold core, the guide sliding groove guides the moving direction of the inclined insert pin, and the core pulling process of the mold is simple and easy.

More specifically, the front parts of the inclined insert needles are provided with cut-off parts, the front parts of the two inclined insert needles are abutted through cut-off surfaces of the cut-off parts, and the cut-off surfaces are parallel to or overlapped with the sliding direction of the slide seat. The two oblique insert pins have the same structure, the manufacturing cost is reduced, and the two oblique insert pins are symmetrically arranged, namely the synchronous mirror displacement is convenient for the design of the core-pulling stroke.

More specifically, the direction spout is T type groove, and direction of guide spout length direction sets up with slide seat slip direction is perpendicular, and the guide slide is T type piece, and the guide slide slides along direction of guide spout length direction, is equipped with the mounting hole of slope on the guide slide, and the needle front portion of inlaying to one side passes the mounting hole, and the needle rear portion card of inlaying to one side is put in the mounting hole. The guide sliding seat is not easy to be separated from the guide sliding groove, the moving direction of the guide sliding seat is limited, and the inclined insert needle is matched with the insertion hole to realize the directional inclined movement of the inclined insert needle.

More specifically, the second template assembly further comprises a male template, the second mold core is mounted on the male template, a guide seat is arranged on one side of the male template corresponding to the insertion hole in the second mold core, a sliding groove is formed in the guide seat, concave portions are respectively arranged on two side faces of the sliding groove, the slide seat is arranged in the sliding groove in a sliding mode, convex edges are arranged on two sides of the slide seat corresponding to the concave portions, and the convex edges are arranged in the concave portions in a sliding mode. The convex edge and the concave part are matched to limit the moving direction of the guide seat in the sliding groove.

More specifically, a guide protrusion is arranged in the sliding groove of the guide seat along the moving direction of the slide seat, a guide groove is arranged at the bottom of the corresponding slide seat, and the guide seat slides on the guide protrusion through the guide groove. The contact area of the slide seat and the slide groove is reduced by the guide protrusion and the guide groove, the friction force is reduced, the moving resistance of the slide seat is reduced, and meanwhile, the precision of the guide protrusion and the guide groove is ensured to meet the use requirement of the mold, so that the manufacturing cost of the whole mold is reduced.

More specifically, the first template assembly further comprises a female template, the first mold core is installed on the female template, a V-shaped upper cavity is formed in the bottom surface of the first mold core, a V-shaped lower cavity is formed in the top surface of the second mold core, a vertical cavity is formed in the second mold core, the top of the vertical cavity coincides with the tip of the V-shaped lower cavity, after the first mold core and the second mold core are closed, the V-shaped upper cavity and the V-shaped lower cavity align to form two horizontal cavities, and the tip of the V-shaped upper cavity and the vertical cavity align to form the vertical cavity. The design of the V-shaped upper concave cavity of the first die core, the V-shaped lower concave cavity of the second die core and the vertical cavity makes the water nozzle for the coffee machine easy to form.

More specifically, the cavity is equipped with the installation department die cavity on the V-arrangement, and the cavity is equipped with the lower mounting portion die cavity down in the V-arrangement, and the installation department cavity is formed with the lower mounting portion die cavity to the last installation department die cavity after first mould benevolence and second mould benevolence compound die. Go up installation department die cavity and lower installation department die cavity and provide locate function for the manufacturing of first mould benevolence and second mould benevolence, and go up installation department die cavity and the installation department of lower installation department die cavity shaping coffee machine water injection well choke's installation department.

More specifically, the second template assembly further comprises an ejection mechanism, the second mold core is provided with an ejection cavity, the ejection cavity is communicated with the lower installation part cavity, and the movable end of the ejection mechanism extends into the ejection cavity. The design of the ejection cavity enables the water nozzle for the coffee machine to be easily separated from the mould.

More specific scheme, second mould benevolence top surface is close to subassembly one side of loosing core and is equipped with down the convex part, the patchhole slope sets up under in the convex part, two tails of cavity communicate with the patchhole that corresponds through the lower arc wall of semicircle form respectively under the V-arrangement, first mould benevolence bottom surface is equipped with the concave part, two tails of cavity communicate with the concave part through the last arc wall of semicircle form respectively on the V-arrangement, behind first mould benevolence and the second mould benevolence compound die, go up the arc wall and fold into the round hole with lower arc wall alignment, the round hole, the patchhole is the same with inlaying the needle diameter to one side, inlay the needle shutoff round hole to one side.

The invention has the following beneficial effects.

(1) According to the water nozzle mould for the coffee machine, the first template component can drive the travelling seat to move when moving, the two inclined insert needles move along with the travelling seat, the two inclined insert needles are automatically inclined in a splayed manner and are drawn out, so that the water nozzle mould for the coffee machine is easy to form, the mould manufacturing difficulty is reduced, and the production cost is reduced.

(2) Secondly, the oblique insert pin slides more easily in the second die core, the guide sliding groove guides the moving direction of the oblique insert pin, and the core pulling process of the die is simple and easy. The two oblique insert pins have the same structure, the manufacturing cost is reduced, and the two oblique insert pins are symmetrically arranged, namely the synchronous mirror displacement is convenient for the design of the core-pulling stroke.

(3) Furthermore, the guide sliding seat is not easy to be separated from the guide sliding groove, the moving direction of the guide sliding seat is limited, and the oblique embedding needle is matched with the insertion hole to realize the directional oblique movement of the oblique embedding needle. The convex edge and the concave part are matched to limit the moving direction of the guide seat in the sliding groove. The contact area of the slide seat and the slide groove is reduced by the guide protrusion and the guide groove, the friction force is reduced, the moving resistance of the slide seat is reduced, and meanwhile, the precision of the guide protrusion and the guide groove is ensured to meet the use requirement of the mold, so that the manufacturing cost of the whole mold is reduced.

(4) And finally, the design of the V-shaped upper concave cavity of the first die core, the V-shaped lower concave cavity of the second die core and the vertical cavity makes the water nozzle for the coffee machine easy to form. The installation part cavity and the lower installation part cavity provide a positioning function for manufacturing the first die core and the second die core, and the installation part cavity and the lower installation part cavity form the installation part of the water nozzle for the coffee machine. The design of the ejection cavity enables the water nozzle for the coffee machine to be easily separated from the mould. The inclined embedding needle blocks the round hole.

Drawings

Fig. 1 is a schematic structural view of a water nozzle mold for a coffee machine.

Fig. 2 is a top view of a water nozzle mold for a coffee maker.

Fig. 3 is a schematic sectional view taken along the line a-a in fig. 2.

Fig. 4 is a side view of a water nozzle mold for a coffee maker.

Fig. 5 is a schematic cross-sectional view taken along line B-B in fig. 4.

Fig. 6 is an exploded structure diagram of a water nozzle mold for a coffee machine.

FIG. 7 is an exploded view of the first mold, the water nozzle for coffee maker and the second mold.

FIG. 8 is a schematic view of a second mold insert.

Fig. 9 is a schematic structural view of a water nozzle, an inclined insert pin, a slide seat and a guide slide seat for a coffee machine in the core pulling assembly.

Detailed Description

The invention is further described with reference to the following figures and examples.

First embodiment, referring to fig. 1-4, a water nozzle mold for a coffee machine includes a first mold plate assembly 1, a second mold plate assembly 2 and a core pulling assembly 3. The first template assembly 1 comprises a first template core 4 and a female template 5, wherein the first template core 4 is arranged on the bottom surface of the female template 5, a V-shaped upper cavity 41 and an upper concave part 42 are arranged on the bottom surface of the first template core 4, an upper installation part cavity 43 is arranged on the V-shaped upper cavity 41, and two tail parts of the V-shaped upper cavity 41 are respectively communicated with the upper concave part 42 through a semicircular upper arc-shaped groove 44.

The second template assembly 2 comprises a second template core 6, a male template 7 and an ejection mechanism 8, wherein the second template core 6 is installed on the top surface of the male template 7, the top surface of the second template core 6 is provided with a V-shaped lower cavity 61, a vertical cavity 62 and a lower convex part 63, the top of the vertical cavity 62 is overlapped with the tip of the V-shaped lower cavity 61, an inclined insertion hole 64 is formed in the lower convex part 63, and two tails of the V-shaped lower cavity 61 are respectively communicated with the corresponding insertion holes 64 through a semicircular lower arc-shaped groove 65. The V-shaped lower cavity 61 is provided with a lower mounting part cavity 66, the second die core 6 is also provided with an ejection cavity 67, the ejection cavity 67 is communicated with the lower mounting part cavity 66, and the movable end of the ejection mechanism 8 extends into the ejection cavity 67.

After the first die core 4 and the second die core 6 are closed, the lower convex part 63 is inserted into the upper concave part 42, the V-shaped upper cavity 41 and the V-shaped lower cavity 61 are aligned to form two horizontal cavities 91, the tip part of the V-shaped upper cavity 41 is aligned to form a vertical cavity 92 with the vertical cavity 62, the upper mounting part cavity 43 and the lower mounting part cavity 66 form a mounting part cavity 93, and the upper arc-shaped groove 44 and the lower arc-shaped groove 65 are aligned to form a circular hole 94. The axes of the corresponding circular hole 94, the insertion hole 64 and the horizontal cavity 91 are on the same straight line. The two horizontal cavities 91 are connected in front and arranged in a V-shape, and the top of the vertical cavity 92 is connected with the two horizontal cavities 91 in front to form a water nozzle cavity 90 of the water nozzle 9 for the coffee maker. One or more water nozzle cavities 90 can be arranged on the water nozzle mould for the coffee machine.

The core pulling assembly 3 comprises an inclined guide post 31, an inclined embedding needle 32 and a slide seat 33. The male die plate 7 is provided with a guide seat 68 corresponding to the side of the insertion hole 64 of the second die core 6, the outer end of the guide seat 68 extends out of the male die plate 7, a sliding groove 681 is formed in the guide seat 68, both sides of the sliding groove 681 are respectively provided with a concave part 682, the bottom surface of the sliding groove 681 of the guide seat 68 is provided with a guide protrusion 683, both sides of the row seat 33 are provided with a convex edge 331 corresponding to the concave part 682, the bottom of the row seat 33 is provided with a guide groove 332, the row seat 33 is arranged in the sliding groove 681, the convex edge 331 extends out of the corresponding concave part 682, and the guide seat 68 slides on the guide protrusion 683 through the guide groove 332. The inclined guide post 31 is arranged on the female die plate 5 of the first die plate assembly 1, the slide seat 33 is provided with a guide inclined hole 34, the bottom surface of the sliding groove 681 is provided with a guide limiting groove 684 corresponding to the inclined guide post 31, and the lower portion of the inclined guide post 31 extends through the guide inclined hole 34 and is inserted into the guide limiting groove 684.

One side of the slide seat 33 close to the second mold core 6 is provided with a guide chute 333, the guide chute 333 is provided with a guide slide seat 35, the guide chute 333 is a T-shaped groove, the guide slide seat 35 is a T-shaped block, the guide slide seat 35 slides along the length direction of the guide chute 333, wherein the sliding direction of the guide slide seat 35 is perpendicular to the sliding direction of the slide seat 33. The guide slide seat 35 is provided with an inclined mounting hole 36, the front part of the inclined insert pin 32 penetrates through the mounting hole 36, the rear part of the inclined insert pin 32 is clamped in the mounting hole 36, namely the inclined insert pin 32 is obliquely arranged on the guide slide seat 35, the two inclined insert pins 32 are arranged in a V shape, the front part of the inclined insert pin 32 is provided with a cut-off part 320, the front parts of the two inclined insert pins 32 are abutted through cut-off surfaces 321 of the cut-off part 320, and the cut-off surfaces 321 are parallel to or coincident with the sliding direction of the slide seat 33. The front parts of the two inclined insert pins 32 are inserted into the corresponding horizontal cavities 91 through the insertion holes 64, and the front parts of the two inclined insert pins 32 are abutted against the top parts of the vertical cavities 92. In the present invention, the circular hole 94, the insertion hole 64 and the slanting insert pin 32 have the same diameter. The vertical cavity 62 of the core plate 7 is provided with a vertical convex column 60, and the side surface of the top of the vertical convex column 60 is abutted against the front parts of the two inclined insert pins 32.

In the invention, two inclined insert needles 32 are correspondingly arranged in one water nozzle cavity 90. The water nozzle mould for the coffee machine is also provided with an injection molding system, and the injection molding system fills materials into gaps among the water nozzle cavity 90, the vertical convex columns 60, the inclined embedding needles 32 and the mounting part cavity 93 so as to manufacture the water nozzle 9 for the coffee machine.

After the water nozzle 9 for the coffee machine is manufactured, the first template component 1 moves upwards integrally, the female template 5 drives the inclined guide post 31 to move upwards, the inclined guide post 31 pushes the position moving seat 33 to move towards the direction away from the second mold core 6, when the position moving seat 33 moves on the guide seat 68, the position moving seat 33 drives the inclined insert needle 32 to be separated from the horizontal cavity 91 through the guide seat 35, due to the limitation of the insertion hole 64, the moving directions of the two inclined insert needles 32 in the same water nozzle cavity 90 are different, namely, the corresponding guide seats 35 slide back to back, and the moving direction of the inclined insert needle 32 and the central axis of the corresponding horizontal cavity 91 are overlapped. And finally, the movable end of the ejection mechanism 8 extends into the ejection cavity 67 to abut against the mounting part of the water nozzle 9 for the coffee machine, so that the water nozzle 9 for the coffee machine is ejected out to realize demoulding. The ejection mechanism 8 is prior art and will not be described in detail in the present invention.

According to the water nozzle mould for the coffee machine, the water nozzle 9 for the coffee machine is simple and easy to demould after being formed, the inclined insert needle 32 is quickly drawn out, the water nozzle 9 for the coffee machine cannot be damaged, and the yield is high.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. A water nozzle mould for a coffee machine comprises a first template component (1), a second template component (2) and a core-pulling component (3), wherein the first template component (1) comprises a first mould core (4), the second template component (2) comprises a second mould core (6), a water nozzle cavity (90) for manufacturing a water nozzle (9) for the coffee machine is formed after the first mould core (4) and the second mould core (6) are matched, the water nozzle cavity (90) comprises a vertical cavity (92) and two horizontal cavities (91), the top of the vertical cavity (92) is communicated with the front parts of the two horizontal cavities (91), the front parts of the two horizontal cavities (91) are communicated and arranged in a V shape, the water nozzle mould is characterized in that the core-pulling component (3) comprises an inclined guide pillar (31), an inclined embedding needle (32) and a slide seat (33), the inclined guide pillar (31) is arranged on the first template component (1), and the slide seat (33) is arranged on the second template component (2), the slide seat (33) is provided with a guide inclined hole (34), the inclined guide post (31) is inserted into the guide inclined hole (34), the first template component (1) drives the inclined guide post (31) to move, the inclined guide post (31) pushes the slide seat (33) to slide on the second template component (2), the second mold core (6) is provided with an insertion hole (64) corresponding to each horizontal cavity (91), the insertion holes (64) are communicated with the corresponding horizontal cavities (91) and the central axes of the insertion holes are superposed, the rear parts of the two inclined insert pins (32) are respectively arranged at one side of the slide seat (33) close to the second mold core (6), the front parts of the two inclined insert pins (32) respectively penetrate through the insertion holes (64) to be inserted into the corresponding horizontal cavities (91), the front parts of the two inclined insert pins (32) are abutted against the top of the vertical cavity (92), the slide seat (33) towards the outside of the second template component (2), and the slide seat (33) drives the two inclined insert pins (32) to be separated from the horizontal cavities (91), the moving direction of the inclined insert pin (32) is overlapped with the central axis of the corresponding horizontal cavity (91).

2. A water nozzle mold for coffee maker as claimed in claim 1, wherein the slide seat (33) is provided with a guide chute (333) on a side thereof adjacent to the second mold core (6), a guide slide seat (35) is provided in the guide chute (333) corresponding to a rear portion of each of the inclined insert pins (32), and the inclined insert pins (32) are obliquely provided on the guide slide seat (35) such that the two inclined insert pins (32) are arranged in a V-shape.

3. A water nozzle mold for coffee maker as claimed in claim 2, wherein the front parts of the inclined insert pins (32) are provided with cut-off parts (320), the front parts of the two inclined insert pins (32) are abutted by cut-off surfaces (321) of the cut-off parts (320), and the cut-off surfaces (321) are parallel to or coincident with the sliding direction of the slide seat (33).

4. A water nozzle mold for coffee maker as claimed in claim 2, wherein the guiding sliding groove (333) is a T-shaped groove, the length direction of the guiding sliding groove (333) is perpendicular to the sliding direction of the slide seat (33), the guiding sliding seat (35) is a T-shaped block, the guiding sliding seat (35) slides along the length direction of the guiding sliding groove (333), the guiding sliding seat (35) is provided with an inclined mounting hole (36), the front part of the inclined insert needle (32) passes through the mounting hole (36), and the rear part of the inclined insert needle (32) is clamped in the mounting hole (36).

5. A water nozzle mold for a coffee maker according to claim 1, wherein the second mold plate assembly (2) further comprises a male mold plate (7), the second mold core (6) is mounted on the male mold plate (7), a guide seat (68) is provided on one side of the male mold plate (7) corresponding to the insertion hole (64) of the second mold core (6), a sliding groove (681) is formed in the guide seat (68), both sides of the sliding groove (681) are respectively provided with a concave portion (682), the row seat (33) is slidably disposed in the sliding groove (681), both sides of the row seat (33) are provided with a convex edge (331) corresponding to the concave portion (682), and the convex edge (331) is slidably disposed in the concave portion (682).

6. A water nozzle mold for coffee maker according to claim 5, wherein the sliding groove (681) of the guide holder (68) is provided with a guide protrusion (683) along the moving direction of the travel holder (33), the bottom of the corresponding travel holder (33) is provided with a guide groove (332), and the guide holder (68) slides on the guide protrusion (683) through the guide groove (332).

7. A water nozzle mold for a coffee maker according to claim 1, wherein the first mold plate assembly (1) further comprises a female mold plate (5), the first mold core (4) is mounted on the female mold plate (5), the bottom surface of the first mold core (4) is provided with a V-shaped upper cavity (41), the top surface of the second mold core (6) is provided with a V-shaped lower cavity (61), the second mold core (6) is provided with a vertical cavity (62), the top of the vertical cavity (62) coincides with the tip of the V-shaped lower cavity (61), after the first mold core (4) and the second mold core (6) are closed, the V-shaped upper cavity (41) and the V-shaped lower cavity (61) are aligned to form two horizontal cavities (91), and the tip of the V-shaped upper cavity (41) and the vertical cavity (62) are aligned to form the vertical cavity (92).

8. A nozzle module for a coffee maker as claimed in claim 7, wherein the V-shaped upper cavity (41) is provided with an upper mounting cavity (43), the V-shaped lower cavity (61) is provided with a lower mounting cavity (66), and the upper mounting cavity (43) and the lower mounting cavity (66) form a mounting cavity (93) when the first die core (4) and the second die core (6) are closed.

9. A water nozzle mould for a coffee maker according to claim 8, wherein the second template assembly (2) further comprises an ejection mechanism (8), the second mold core (6) is provided with an ejection cavity (67), the ejection cavity (67) is communicated with the lower mounting portion cavity (66), and the movable end of the ejection mechanism (8) extends into the ejection cavity (67).

10. A water nozzle mould for a coffee maker according to claim 7, wherein a lower convex portion (63) is arranged on one side of the top surface of the second mould core (6) close to the core pulling assembly (3), the insertion hole (64) is obliquely arranged in the lower convex portion (63), two tails of the V-shaped lower concave cavity (61) are respectively communicated with the corresponding insertion hole (64) through a semicircular lower arc-shaped groove (65), an upper concave portion (42) is arranged on the bottom surface of the first mould core (4), two tails of the V-shaped upper concave cavity (41) are respectively communicated with the upper concave portion (42) through a semicircular upper arc-shaped groove (44), after the first mould core (4) and the second mould core (6) are closed, the upper arc-shaped groove (44) and the lower arc-shaped groove (65) are aligned and folded to form a circular hole (94), and the diameters of the insertion hole (64) and the oblique insert needle (32) are the same.