CN112618077A

CN112618077A - Split dental floss rod and forming process thereof

Info

Publication number: CN112618077A
Application number: CN202011574153.9A
Authority: CN
Inventors: 李希玉; 郝伟彦
Original assignee: Yuhuan Technology Jiangsu Co ltd
Current assignee: Yuhuan Technology Jiangsu Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-09

Abstract

The invention discloses a split dental floss rod and a forming process thereof, and the structure of the split dental floss rod comprises a toothpick part, a handle part and a dental floss part, wherein the end part of the handle part is provided with a mouth sleeving groove, the end part of the toothpick part is provided with an embedded rod, the embedded rod is movably sleeved in the mouth sleeving groove, the interior of the mouth sleeving groove is provided with an elastic part, and the elastic part locks the embedded rod, so that the embedded rod can be elastically and movably positioned in the mouth sleeving groove.

Description

Split dental floss rod and forming process thereof

The technical field is as follows:

the invention relates to the technical field of dental floss rod production, in particular to a split type dental floss rod and a forming process thereof.

Background art:

the dental floss rod is also called dental floss pick, and is a product used together with a toothbrush in daily oral cavity care. Prior to the manufacture of interdental brushes and their dental floss, people have used dental floss to achieve the same effect. Compared with dental floss, the tooth gap brush and the manufacturing process of the dental floss have the advantages of convenience, high efficiency, safety, sanitation and the like. The toothbrush can brush 70% of the upper surface of the teeth, and the dental floss makes up the defects of the toothbrush and is a household tooth care product commonly used in Europe and America nowadays. The product can be used as toothpick and dental floss. The smooth arc-shaped dental floss head is designed, the dental bed is protected by 2 kilograms of pulling force dental floss, dental plaque, soft dirt and food residues are removed, anti-slip ribs or various anti-slip textures are designed in the middle of the toothpick, the head of the toothpick is flat like a knife, the toothpick is more favorable for being plugged into teeth gaps and can be bent into an angle of 45 degrees, and sundries which can not be touched by a common toothpick can be removed.

At present, when the tooth stain is rejected to oral cavity inside in toothpick portion, when the oral cavity to the outside is cleaned, the straight toothpick shape of selection mostly can reach the outside clearance in pair oral cavity, however, the tooth to the oral cavity inboard or deep side is cleaned, then need the toothpick of different radians in order to satisfy the clean needs of different positions, nevertheless toothpick shape singleness on the dental floss stick at present, can't satisfy the user to the inside clean needs of different positions in oral cavity, secondly, toothpick portion is when stretching into the inside in oral cavity and cleaning in the outside in oral cavity, the length requirement to the dental floss stick is also diverse, the dental floss stick overlength or short all are difficult to satisfy user's needs.

The invention content is as follows:

it is an object of the present invention to provide a split dental floss bar and a process for forming the same that solves one or more of the above mentioned problems of the prior art.

In order to solve the technical problem, the invention provides a split dental floss rod, which structurally comprises a toothpick part, a handle part and a dental floss part, and has the innovation points that: the end part of the handle part is provided with a notch groove, the end part of the toothpick part is provided with an embedded rod, and the embedded rod is movably sleeved in the notch groove;

the inside in cover mouthful groove is equipped with the elastic component, and the elastic component pins the embedding pole for but the inside in cover mouthful groove of embedding pole elastic activity.

Furthermore, above-mentioned elastic component is protruding including fixing the buffer spring at looping pit tank bottom and setting up the location at buffer spring top, and the tip of embedding pole is equipped with positioning groove, and the protruding rotatable embedding of location is equipped with the bellied spacing step in restriction location in positioning groove's inside, positioning groove.

Further, the inside in above-mentioned cover mouthful groove is equipped with the location spout, and the lateral wall of embedding pole is equipped with the location cardboard, location cardboard and location spout sliding connection, when location arch and positioning groove contradict each other, the location cardboard breaks away from the location spout.

The invention provides a forming process of a split dental floss rod, which specifically comprises the following steps:

s1, integrally forming the elastic piece, the handle part and the dental floss part: the handle part adopts plastic as raw materials, the dental floss base layer is yarn which adopts nylon or polyester or PTFE or yarn as main raw materials, the elastic part is pre-embedded in a mold cavity, and the raw materials of the handle part in a molten state are injected into the mold cavity, so that the elastic part, the handle part and the dental floss part are integrally molded;

s2, injection molding toothpick parts with various shapes: heating the plastic material which is melted at low temperature and has high fluidity to 165 ℃ by a heating device by using a high-injection-speed injection molding machine, and then injecting the plastic material which is heated to 165 ℃ into a mold with a toothpick part by an injection device;

s3, assembling; the plurality of kinds of toothpick portions selected in step S2 are loaded into the packing box together with one handle portion selected in step S1.

Further, in step S1, the mold cavity includes a fixed mold and a movable mold, the fixed mold and the movable mold are both provided with a cavity matched with the shape of the handle portion, the fixed mold and the movable mold are both provided with a positioning groove, the positioning groove extends to the inside of the cavity, the elastic member enters the inside of the cavity along the positioning groove, the positioning groove is provided with a limiting member for limiting the axial displacement of the elastic member, and the front surface of the limiting member faces the elastic member.

Furthermore, above-mentioned locating part is including can be on the constant head tank free gliding location slider and gag lever post, and the slip direction of location slider on the constant head tank is close to or keeps away from the die cavity, and the gag lever post is fixed on the location slider and openly faces the inside of die cavity, is equipped with the mounting between location slider and the constant head tank.

Furthermore, the fixing piece comprises a pushing cylinder and a force measuring sensor, the output end of the pushing cylinder is fixedly connected with the positioning sliding block, a controller is arranged on the pushing cylinder, and the force measuring sensor is arranged on the positioning sliding block and located in the extending direction of the elastic piece.

Furthermore, the end part of the limiting rod is provided with a hollow clamping groove, and the positioning sliding block slides towards the cavity, so that the elastic part abuts against the inside of the clamping groove.

The invention has the beneficial effects that:

1. the invention provides a split dental floss rod and a forming process thereof, wherein a toothpick part is detachably arranged at the position of a handle, the toothpick part with a proper shape can be flexibly selected according to the requirement in the oral cavity, the use flexibility of the toothpick part is improved, and secondly, when the toothpick part is specifically used, the toothpick part can elastically move on the handle part through the arrangement of an elastic piece, the elastic movement can flexibly adjust the telescopic length of the toothpick part in the oral cavity, particularly, when the tooth at the inner side and the outer side of the oral cavity is cleaned, the required length of the toothpick part is the same, so that the cleaning requirements of different positions inside and outside the oral cavity are met.

2. The invention provides a split dental floss rod and a forming process thereof, when an embedding rod is installed in an entrance slot, the initial position of the embedding rod entering the entrance slot is determined by the sliding of a positioning clamping plate on a positioning sliding groove, then when a positioning bulge props against the inside of a positioning groove, the positioning clamping plate is separated from the positioning sliding groove, the embedding rod is rotated, the positioning bulge is limited in the positioning groove by a limiting step, when a toothpick part needs to be disassembled subsequently, the embedding rod can be taken down from the inside of the entrance slot only by rotating the embedding rod, and the limiting step loses the limiting effect on the positioning bulge.

3. The invention provides a split dental floss rod and a forming process thereof, wherein when the split dental floss rod is produced, an integral forming mode of an elastic part, a handle part and a dental floss part is adopted, so that the production efficiency of the split dental floss rod is improved, secondly, when the dental floss part is produced, a plurality of toothpick parts in shapes are produced according to the requirements of customers, and the plurality of toothpick parts and the handle part are packaged together into a packaging box, so that the requirements of the customers are met.

Description of the drawings:

fig. 1 is a side view of the split dental floss stick of the invention.

Fig. 2 is an exploded view of the connection between the shank and the pocket groove of the present invention.

Fig. 3 is a schematic side view of the mold cavity of the present invention.

FIG. 4 is a cross-sectional view of the surface of the stationary mold of the present invention.

The specific implementation mode is as follows:

for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

Fig. 1 to 2 show an embodiment of the present invention, which structurally includes a toothpick portion 1, a handle portion 2 and a toothpick portion 3, wherein an end of the handle portion 2 is provided with a notch 21, an end of the toothpick portion 1 is provided with an embedded rod 11, and the embedded rod 11 is movably sleeved inside the notch 21;

the elastic member 3 is provided inside the notch groove 21, and the elastic member 3 locks the insert rod 11 such that the insert rod 11 is elastically movable inside the notch groove 21.

In the invention, the toothpick part 1 is detachably arranged at the position of the handle, and the toothpick part 1 with a proper shape can be flexibly selected according to the requirement in the oral cavity, so that the use flexibility of the toothpick part 1 is improved, and then when the toothpick part 1 is specifically used, the toothpick part 1 can elastically move on the handle part 2 through the arrangement of the elastic piece 3, the elastic movement can flexibly adjust the telescopic length of the toothpick part 1 in the oral cavity, and particularly when the teeth on the inner side and the outer side of the oral cavity are cleaned, the required length of the toothpick part 1 is the same for all parts, so that the cleaning requirements of different positions inside and outside the oral cavity are met.

In the present invention, the toothpick portion 1 and the handle portion 2 are attached to each other in the following manner: the embedding rod 11 is embedded into the notch groove 21, and the embedding rod 11 is locked by the elastic piece 3, so that the embedding rod 11 is fixed in the notch groove 21, and the embedding rod 11 can elastically move in the notch groove 21.

In the present invention, the elastic member 3 includes a buffer spring 31 fixed at the bottom of the notch 21 and a positioning protrusion 32 disposed at the top of the buffer spring 31, the end of the insertion rod 11 is provided with a positioning groove 111, the positioning protrusion 32 is rotatably inserted into the positioning groove 111, and the positioning groove 111 is provided with a limiting step 112 for limiting the positioning protrusion 32.

In the present invention, the inside of the notch groove 21 is provided with a positioning sliding groove 211, the side wall of the embedded rod 11 is provided with a positioning clamping plate 113, the positioning clamping plate 113 is slidably connected with the positioning sliding groove 211, and when the positioning protrusion 32 and the positioning groove 111 are abutted against each other, the positioning clamping plate 113 is separated from the positioning sliding groove 211.

In the invention, when the embedded rod 11 is installed and enters the inside of the notch groove 21, the initial position of the embedded rod 11 entering the notch groove 21 is determined by the sliding of the positioning clamping plate 113 on the positioning sliding groove 211, and then, when the positioning protrusion 32 abuts against the inside of the positioning groove 111, the positioning clamping plate 113 is separated from the positioning sliding groove 211, the embedded rod 11 is rotated, the positioning protrusion 32 is limited inside the positioning groove 111 by the limiting step 112, and when the toothpick part 1 needs to be disassembled later, only the embedded rod 11 needs to be rotated, the limiting step 112 loses the limiting effect on the positioning protrusion 32, and the embedded rod 11 can be taken down from the inside of the notch groove 21, so that the whole process is simple and convenient.

s1, the elastic member 3, the handle portion 2, and the dental floss portion 3 are integrally molded: the handle part 2 is made of plastic, the dental floss base layer is made of yarns which are made of nylon or polyester or PTFE or yarns as main raw materials, the elastic part 3 is embedded in the mold cavity 4, and the raw materials of the handle part 2 in a molten state are injected into the mold cavity 4, so that the elastic part 3, the handle part 2 and the dental floss part 3 are integrally formed;

s2, injection molding toothpick portions 1 having various shapes: heating the plastic material which is melted at low temperature and has high fluidity to 165 ℃ by a heating device by using a high-injection-speed injection molding machine, and then injecting the plastic material which is heated to 165 ℃ into a mold with the toothpick part 1 by an injection device;

s3, assembling; the plurality of kinds of toothpick portions 1 selected in step S2 are loaded into the packaging box together with one handle portion 2 selected in step S1.

In the invention, when the split dental floss rod is specifically produced, the production efficiency of the split dental floss rod is improved by adopting an integrated forming mode of the elastic part 3, the handle part 2 and the dental floss part 3, and then when the dental floss part 1 is specifically produced, the dental floss parts 1 in a plurality of shapes are produced according to the requirements of customers, and the plurality of dental floss parts 1 and the handle part 2 are packaged together into the packaging box, so that the requirements of the customers are met.

In the present invention, in step S1, the mold cavity 4 includes a fixed mold 41 and a movable mold 42, the fixed mold 41 and the movable mold 42 are both provided with a cavity 101 matching the shape of the handle 2, the fixed mold 41 and the movable mold 42 are both provided with a positioning groove 411, the positioning groove 411 extends to the inside of the cavity 101, the elastic member 3 enters the inside of the cavity 101 along the positioning groove 411, the positioning groove 411 is provided with a limiting member 5 for limiting the axial displacement of the elastic member 3, and the front surface of the limiting member 5 faces the elastic member 3.

In the invention, before the injection molding is carried out in the cavity 101, the elastic part 3 enters the cavity 101 along the positioning groove 411, then the fixed die 41 and the movable die 42 are closed, and when the injection molding is carried out in the cavity 101, in order to avoid the movement of the elastic part 3 in the cavity 101 caused by the pressure during the injection molding, the limiting part 5 is used for limiting the axial displacement of the elastic part 3, so that the whole injection molding process is safe and reliable, and the integrity of the elastic part 3 in the cavity 101 is ensured.

In the present invention, the limiting member 5 includes a positioning slider 51 and a limiting rod 52 that can freely slide on the positioning slot 411, the sliding direction of the positioning slider 51 on the positioning slot 411 is close to or away from the cavity 101, the limiting rod 52 is fixed on the positioning slider 51, and the front surface of the limiting rod faces the inside of the cavity 101, and a fixing member 6 is disposed between the positioning slider 51 and the positioning slot 411.

In the present invention, the operation principle of the limiting member 5 limiting the elastic member 3 is as follows: when specifically putting into the inside of die cavity 101 with elastic component 3, the mobile location slider 51 is kept away from die cavity 101, conveniently gets into the inside of die cavity 101 with elastic component 3 along constant head tank 411, and when the position of elastic component 3 was restricted to needs, mobile location slider 51 moved towards the direction of die cavity 101 for gag lever post 52 removes the inside that gets into die cavity 101 and withstands elastic component 3, and utilizes mounting 6 to fix location slider 51 on constant head tank 411.

In the present invention, the fixing element 6 includes a pushing cylinder 61 and a load cell 62, an output end of the pushing cylinder 61 is fixedly connected to the positioning slider 51, the pushing cylinder 61 is provided with a controller, and the load cell 62 is mounted on the positioning slider 51 and located in an extending direction of the elastic element 3.

In the present invention, the fixing member 6 fixes the positioning slider 51 on the positioning slot 411 according to the following working principle: because the elastic member 3 has a certain elasticity, in order to ensure that the limit rod 52 can just abut against the elastic member 3, the situation that the limit rod 52 does not abut against the elastic member 3 or the elastic member 3 is excessively compressed is avoided, the positioning slide block 51 moves towards the cavity 101 by using the pushing cylinder 61, in the moving process of the positioning slide block 51, when the elastic member 3 collides with the limit rod 52, the elastic member 3 can generate an opposite acting force on the limit rod 52, the opposite acting force is monitored by the force sensor 62, but when the acting force reaches a corresponding value, the situation that the limit rod 52 just abuts against the elastic member 3 is shown, the force sensor 62 transmits a signal to the controller, the controller stops the pushing cylinder 61 from moving, so that the slide block is fixed on the positioning groove 411, and once the value monitored by the force sensor 62 deviates, the controller controls the operation of the pushing cylinder 61 along with the value monitored by the force sensor 62, in the whole limiting process of the limiting rod 52 on the elastic part 3, manual adjustment is not needed, the force sensor 62 monitors the reaction force of the elastic part 3 on the limiting rod 52 at any time, the limiting rod 52 can be guaranteed to be limited on the elastic part 3 all the time, and the elastic part 3 can be further guaranteed to be stable all the time in the whole injection molding process of the cavity 101.

In the present invention, a hollow engaging groove 521 is formed at an end of the limiting rod 52, and the positioning slider 51 slides toward the cavity 101, so that the elastic member 3 abuts against the inside of the engaging groove 521.

In the invention, the hollow clamping groove 521 is favorable for the elastic part 3 to collide, so that the collision area between the elastic part 3 and the end part of the limiting rod 52 is increased, and the stability of the end part of the limiting rod 52 for limiting the elastic part 3 is further improved.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a split type dental floss stick, its structure includes toothpick portion (1), handle portion (2) and dental floss portion (3), its characterized in that: the end part of the handle part (2) is provided with a notch groove (21), the end part of the toothpick part (1) is provided with an embedded rod (11), and the embedded rod (11) is movably sleeved in the notch groove (21);

an elastic piece (3) is arranged inside the notch groove (21), and the embedded rod (11) is locked by the elastic piece (3) so that the embedded rod (11) can be elastically and movably positioned inside the notch groove (21).

2. A split dental floss bar as claimed in claim 1, wherein: elastic component (3) are including fixing buffer spring (31) and the setting of cover mouthful groove (21) bottom buffer spring (31) top location arch (32), the tip of embedding pole (11) is equipped with positioning groove (111), the rotatable embedding of location arch (32) is in the inside of positioning groove (111), be equipped with the restriction on positioning groove (111) spacing step (112) of location arch (32).

3. A split dental floss bar as claimed in claim 2, wherein: the inside of cover mouthful groove (21) is equipped with location spout (211), the lateral wall of embedding pole (11) is equipped with location cardboard (113), location cardboard (113) with location spout (211) sliding connection, location arch (32) with when positioning groove (111) contradict each other, location cardboard (113) break away from location spout (211).

4. A process for forming a split dental floss bar as claimed in claim 3, wherein: the method specifically comprises the following steps:

s1, the elastic piece (3), the handle part (2) and the tooth line part (3) are integrally formed: the handle part (2) adopts plastic as raw materials, the dental floss base layer is yarn which adopts nylon or polyester or PTFE or yarn as main raw materials, the elastic part (3) is pre-embedded in the mold cavity (4), and the raw materials of the handle part (2) in a molten state are injected into the mold cavity (4), so that the elastic part (3), the handle part (2) and the dental floss part (3) are integrally formed;

s2, injection molding of toothpick parts (1) with various shapes: heating the plastic material which is melted at low temperature and has high fluidity to 165 ℃ by a heating device by using a high-injection-speed injection molding machine, and then injecting the plastic material which is heated to 165 ℃ into a mold with a toothpick part (1) by an injection device;

s3, assembling; the plurality of kinds of toothpick parts (1) selected in step S2 are put into a packaging box together with one handle part (2) selected in step S1.

5. A molding process of a split dental floss bar as claimed in claim 4, wherein: in step S1, mold cavity (4) includes cover half (41) and movable mould (42), cover half (41) with all seted up on movable mould (42) with handle portion (2) shape assorted die cavity (101), cover half (41) with all be equipped with constant head tank (411) on movable mould (42), constant head tank (411) extend to the inside of die cavity (101), elastic component (3) along go into on constant head tank (411) the inside of die cavity (101), be equipped with the restriction on constant head tank (411) elastic component (3) axial displacement' S locating part (5), locating part (5) openly face towards elastic component (3).

6. A molding process of a split dental floss bar as claimed in claim 5, wherein: the locating part (5) comprises a locating slide block (51) and a locating rod (52), wherein the locating slide block (51) can freely slide on the locating groove (411), the locating slide block (51) is close to or far away from the cavity (101) in the sliding direction of the locating groove (411), the locating rod (52) is fixed on the locating slide block (51) and faces towards the inside of the cavity (101), and a fixing part (6) is arranged between the locating slide block (51) and the locating groove (411).

7. The molding process of a split dental floss bar as claimed in claim 6, wherein: fixing piece (6) are including propelling movement cylinder (61) and force cell sensor (62), the output of propelling movement cylinder (61) with location slider (51) fixed connection, be equipped with the controller on propelling movement cylinder (61), force cell sensor (62) are installed on location slider (51) and be located on the extending direction of elastic component (3).

8. The molding process of a split dental floss bar as claimed in claim 6, wherein: the end part of the limiting rod (52) is provided with a hollow clamping groove (521), and the positioning sliding block (51) slides towards the cavity (101) so that the elastic part (3) is abutted to the inside of the clamping groove (521).