CN215359544U - Structure for reducing injection gap of cutter handle - Google Patents
Structure for reducing injection gap of cutter handle Download PDFInfo
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- CN215359544U CN215359544U CN202121548209.3U CN202121548209U CN215359544U CN 215359544 U CN215359544 U CN 215359544U CN 202121548209 U CN202121548209 U CN 202121548209U CN 215359544 U CN215359544 U CN 215359544U
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- clamping piece
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- plastic
- cutter handle
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Abstract
The utility model discloses a structure for reducing an injection gap of a cutter handle, wherein an upper groove is formed in the upper surface of a metal cutter handle, a lower groove is formed in the lower surface of the metal cutter handle, a plastic inner core clamping piece consists of an upper clamping piece and a lower clamping piece, the upper clamping piece is arranged in the upper groove, the lower clamping piece is arranged in the lower groove, a cutter handle shell is formed on the metal cutter handle through integral coating injection molding after the upper clamping piece is arranged in the upper groove and the lower clamping piece is arranged in the lower groove; the assembly of the plastic inner core clamping piece and the metal handle part is convenient for secondary injection positioning, so that the wall thickness of the plastic for secondary injection is equal, the plastic shrinkage is balanced, and gaps generated by plastic shrinkage are reduced according to the control of injection molding parameters; the problem of current handle of a knife because of the characteristic difference of POM plastic and metal, lead to after the POM plastic jets out, the shrink of POM plastic is great, produces the gap with the metal, leads to the outward appearance and the service function of cutter handle to receive the influence is solved.
Description
Technical Field
The utility model belongs to the technical field of cutter handle manufacturing, and particularly relates to a structure for reducing the injection gap of a cutter handle, in particular to a cutter handle for POM plastic material injection.
Background
The handle of a knife is an instrument, common handle of a knife is mostly direct by wood system handle of a knife or the plastics handle of a knife of moulding plastics on the market, and most handle of a knife or wood system handle of a knife of moulding plastics are formed by the polylith concatenation, use after the certain time, it is uncomfortable to probably become flexible and lead to feeling, therefore, the handle to high-end cutter adopts POM plastic to jet out the preparation with the metalwork mostly, but because of the characteristic difference of these two kinds of materials of POM plastic and metal, lead to after the POM plastic jets out, the shrink of POM plastic is great, produce the gap with the metal, the outward appearance and the service function that lead to the tool handle receive the influence, for solving this difficult problem, it is fairly necessary to research and develop the handle that prevents that the shrink from producing the gap and jets out the shaping process structure.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a structure for reducing the injection gap of a cutter handle, which comprises a plastic inner core clamping piece, a metal cutter handle and a cutter handle shell, wherein the upper surface of the metal cutter handle is provided with an upper groove, the lower surface of the metal cutter handle is provided with a lower groove, the plastic inner core clamping piece consists of an upper clamping piece and a lower clamping piece, the upper clamping piece is arranged in the upper groove, the lower clamping piece is arranged in the lower groove, and the cutter handle shell is integrally coated and injection-molded on the metal cutter handle after the upper clamping piece is arranged in the upper groove and the lower clamping piece is arranged in the lower groove; the plastic inner core clamping piece in the structure is used for supporting the second injection, so that the amount of plastic injection molding plastic injected for the second injection is reduced, and the uniformity of the wall thickness of the second plastic is stabilized; the metal handle is used as a supporting component for shaping the appearance of the product and fixing the positioning of the plastic inner core clamping piece, and the metal handle component is equivalent to a framework of the product and is used for fixing a handle structure; the assembly of the plastic inner core clamping piece and the metal handle part is convenient for secondary injection positioning after the plastic inner core clamping piece and the metal handle part are combined; the finished product after the secondary injection molding has the advantages that the wall thickness of the plastic cement after the secondary injection molding is equal and the plastic cement shrinkage is balanced through the positioning of the clamping piece and the metal handle part, and gaps generated by the plastic cement shrinkage are reduced according to the control of injection molding parameters; the problem of current handle of a knife because of the characteristic difference of these two kinds of materials of POM plastic and metal, lead to after the POM plastic jets out, the shrink of POM plastic is great, produces the gap with the metal, leads to the outward appearance and the service function of cutter handle to receive the influence is solved.
The technical problem to be solved by the present invention is to provide a structure for reducing the injection gap of a tool handle, which includes a plastic inner core clamping piece, a metal tool handle and a tool handle housing, wherein the upper surface of the metal tool handle is provided with an upper groove, the lower surface of the metal tool handle is provided with a lower groove, the plastic inner core clamping piece is composed of an upper clamping piece and a lower clamping piece, the upper clamping piece is arranged in the upper groove, the lower clamping piece is arranged in the lower groove, the tool handle housing is formed by integrally coating and injection molding the upper clamping piece, the lower clamping piece and the lower clamping piece on the metal tool handle;
preferably, the material of the knife handle shell is POM plastic;
preferably, the two ends of the upper clamping piece distributed along the length direction are respectively provided with a first positioning hole and a second positioning hole;
preferably, the two ends of the lower clamping piece distributed along the length direction are respectively provided with a first positioning hole and a second positioning hole;
preferably, a first positioning pin and a second positioning pin are respectively arranged at two ends of the upper groove of the metal cutter handle distributed along the length direction;
preferably, a first positioning pin and a second positioning pin are respectively arranged at two ends of the lower groove of the metal cutter handle distributed along the length direction;
when the handle of the cutter needs to be formed, aligning a first positioning hole on the upper clamping piece with a first positioning pin in an upper groove of the metal handle, aligning a second positioning hole on the upper clamping piece with a second positioning pin in the upper groove of the metal handle, and pressing the upper clamping piece downwards to enable the upper clamping piece to be fixedly arranged in the upper groove; similarly, aligning the first positioning hole on the lower clamping piece with the first positioning pin in the lower groove of the metal tool handle, aligning the second positioning hole on the lower clamping piece with the second positioning pin in the lower groove of the metal tool handle, and pressing the lower clamping piece upwards to fix the lower clamping piece in the lower groove; and then, the cutter handle shell is subjected to injection molding on the metal cutter handle through integral cladding injection molding.
Compared with the prior art, the utility model has the following positive effects: the plastic inner core clamping piece is used for supporting the second injection, so that the amount of plastic injection molding plastic injected for the second injection is reduced, and the uniformity of the wall thickness of the second plastic is stabilized; the metal handle is used as a supporting component for shaping the appearance of the product and fixing the positioning of the plastic inner core clamping piece, and the metal handle component is equivalent to a framework of the product and is used for fixing a handle structure; the assembly of the plastic inner core clamping piece and the metal handle part is convenient for secondary injection positioning after the plastic inner core clamping piece and the metal handle part are combined; the finished product after the secondary injection molding has the advantages that the wall thickness of the plastic cement after the secondary injection molding is equal and the plastic cement shrinkage is balanced through the positioning of the clamping piece and the metal handle part, and gaps generated by the plastic cement shrinkage are reduced according to the control of injection molding parameters; the problem of current handle of a knife because of the characteristic difference of these two kinds of materials of POM plastic and metal, lead to after the POM plastic jets out, the shrink of POM plastic is great, produces the gap with the metal, leads to the outward appearance and the service function of cutter handle to receive the influence is solved.
Drawings
Fig. 1 is a schematic view of a plastic core clip structure according to the present invention, wherein (a) is a front view and (b) is a side view;
FIG. 2 is a schematic structural view of a metal blade blank according to the present invention, wherein (a) is a front view and (b) is a side view;
fig. 3 is a schematic structural view of the plastic inner core clip and the metal knife blank after assembly, wherein (a) is a front view and (b) is a side view;
FIG. 4 is a schematic structural view of the present invention after the secondary integral injection molding of the tool holder, wherein FIG. (a) is a front view and FIG. (b) is a side view;
the labels in the figures are: 1-plastic inner core clamping piece, 2-metal knife handle, 3-knife handle shell, 11-first positioning hole, 12-upper clamping piece, 13-lower clamping piece, 14-second positioning hole, 21-knife body, 22-first positioning pin, 23-knife handle and 24-second positioning pin.
Detailed Description
The utility model will be further described with reference to fig. 1-4 and the detailed description; the following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the utility model. All falling within the scope of the present invention.
Referring to the attached drawings 1-4, the structure for reducing the injection gap of the cutter handle is disclosed, and is characterized by comprising a plastic inner core clamping piece 1, a metal cutter handle 2 and a cutter handle shell 3, wherein the plastic inner core clamping piece 1 consists of an upper clamping piece 12 and a lower clamping piece 13, the metal cutter handle 2 consists of a first positioning pin 22, a cutter handle 23 and a second positioning pin 24, and the cutter handle 23 and the cutter body 21 are integrally formed; the plastic inner core clamping piece 1 consists of an upper clamping piece 12 and a lower clamping piece 13, the upper clamping piece 12 is arranged in the upper groove, the lower clamping piece 13 is arranged in the lower groove, and the knife handle shell 3 is integrally coated and injection-molded on the metal knife handle 2 after the upper clamping piece 12 is arranged in the upper groove and the lower clamping piece 13 is arranged in the lower groove; the tool holder shell 3 is made of POM plastic, two ends of the upper clamping piece 12 distributed along the length direction are respectively provided with a first positioning hole 11 and a second positioning hole 14, two ends of the lower clamping piece 13 distributed along the length direction are respectively provided with a first positioning hole 11 and a second positioning hole 14, two ends of the upper groove of the metal tool holder 2 distributed along the length direction are respectively provided with a first positioning pin 22 and a second positioning pin 24, and two ends of the lower groove of the metal tool holder 2 distributed along the length direction are respectively provided with a first positioning pin 22 and a second positioning pin 24;
when the handle of the cutter needs to be formed, aligning the first positioning hole 11 on the upper clamping piece 12 with the first positioning pin 22 in the upper groove of the metal handle, aligning the second positioning hole 14 on the upper clamping piece 12 with the second positioning pin 24 in the upper groove of the metal handle, and pressing the upper clamping piece 12 downwards to enable the upper clamping piece 12 to be fixedly arranged in the upper groove; similarly, aligning the first positioning hole 11 on the lower clamping piece 13 with the first positioning pin 22 in the lower groove of the metal tool handle, aligning the second positioning hole 14 on the lower clamping piece 13 with the second positioning pin 24 in the lower groove of the metal tool handle, and pressing the lower clamping piece 13 upwards to fix the lower clamping piece 13 in the lower groove; then, the holder housing 3 is injection molded on the metal holder by integral cladding injection molding.
Compared with the prior art, the utility model has the following positive effects: the plastic inner core clamping piece is used for supporting the second injection, so that the amount of plastic injection molding plastic injected for the second injection is reduced, and the uniformity of the wall thickness of the second plastic is stabilized; the metal handle is used as a supporting component for shaping the appearance of the product and fixing the positioning of the plastic inner core clamping piece, and the metal handle component is equivalent to a framework of the product and is used for fixing a handle structure; the assembly of the plastic inner core clamping piece and the metal handle part is convenient for secondary injection positioning after the plastic inner core clamping piece and the metal handle part are combined; the finished product after the secondary injection molding has the advantages that the wall thickness of the plastic cement after the secondary injection molding is equal and the plastic cement shrinkage is balanced through the positioning of the clamping piece and the metal handle part, and gaps generated by the plastic cement shrinkage are reduced according to the control of injection molding parameters; the problem of current handle of a knife because of the characteristic difference of these two kinds of materials of POM plastic and metal, lead to after the POM plastic jets out, the shrink of POM plastic is great, produces the gap with the metal, leads to the outward appearance and the service function of cutter handle to receive the influence is solved.
The utility model aims to provide a process structure for preventing plastic from shrinking to generate gaps, so that a product has a stable shrinkage proportion after being injected, the gap between plastic and metal is controlled, the product quality is improved, and the product appearance quality is improved; compared with the prior art, the utility model has the following beneficial effects: the utility model can adapt to all plastic handles with metal-containing parts, in particular to products with very high plastic shrinkage such as POM and the like, by modifying the handle structure process; the structure and the process of the utility model have low investment cost, can adapt to batch production, improve the yield of products, and avoid repeated reworking and repairing caused by the problem of gaps in production;
the structure of the plastic inner core clamping piece and the metal cutter handle part comprises a positioning hole, a positioning pin, a concave feature, a metal hole feature and the like, the structures and the features are specially designed for preventing plastic shrinkage according to the characteristics of plastic materials, including but not limited to the structural limitation in the attached drawings.
Claims (6)
1. The utility model provides a reduce structure that cutter handle jetted out gap, its characterized in that, it includes plastic inner core clamping piece (1), metal handle of a knife (2), handle of a knife shell (3), wherein, the upper groove has been seted up to the upper surface of metal handle of a knife (2), the low groove has been seted up to the lower surface of metal handle of a knife (2), plastic inner core clamping piece (1) comprises last clamping piece (12) and lower clamping piece (13), go up clamping piece (12) set up in the upper groove, lower clamping piece (13) set up in the low groove, handle of a knife shell (3) be in go up clamping piece (12) set up in behind the upper groove, and lower clamping piece (13) set up in behind the low groove, through whole cladding jet-out the shaping in on metal handle of a knife (2).
2. The structure for reducing the injection gap of the cutter handle according to claim 1, wherein the material of the handle housing (3) is POM plastic.
3. The structure for reducing the injection gap of the tool handle according to claim 1 or 2, wherein the two ends of the upper clamping piece (12) distributed along the length direction are respectively provided with a first positioning hole (11) and a second positioning hole (14).
4. The structure for reducing the injection gap of the tool handle according to claim 1 or 2, wherein the two ends of the lower clamping piece (13) distributed along the length direction are respectively provided with a first positioning hole (11) and a second positioning hole (14).
5. The structure for reducing the injection gap of the cutter handle according to claim 3, wherein the two ends of the upper groove of the metal cutter handle (2) distributed along the length direction are respectively provided with a first positioning pin (22) and a second positioning pin (24).
6. The structure for reducing the injection gap of the cutter handle according to claim 4, wherein the two ends of the lower groove of the metal cutter handle (2) distributed along the length direction are respectively provided with a first positioning pin (22) and a second positioning pin (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121548209.3U CN215359544U (en) | 2021-07-08 | 2021-07-08 | Structure for reducing injection gap of cutter handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121548209.3U CN215359544U (en) | 2021-07-08 | 2021-07-08 | Structure for reducing injection gap of cutter handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215359544U true CN215359544U (en) | 2021-12-31 |
Family
ID=79607927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121548209.3U Active CN215359544U (en) | 2021-07-08 | 2021-07-08 | Structure for reducing injection gap of cutter handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215359544U (en) |
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2021
- 2021-07-08 CN CN202121548209.3U patent/CN215359544U/en active Active
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