Label sucking device capable of accurately returning

Abstract

The utility model provides an accurate return label suction device, which relates to the technical field of mold label suction and exhaust, and is provided with a shell and an inner core, an inner core is detachably connected to the interior of the shell through threads, the inner core comprises an inner core step position, a shell interior step position is arranged in the shell, and when the shell is connected with the inner core, the inner core step position is attached to the shell interior step position; the inner core is provided with a ventilation middle hole, and a first air outlet seam, a second air outlet seam and an air outlet are formed between the shell and the inner core. The mold has the advantages that the inner core and the outer shell which are detachably connected are designed, the outer shell is connected with the mold, gas in the mold enters from the first gas outlet seam and is finally discharged out of the mold from the ventilation middle hole, and the inner core step position and the outer shell inner step position are further arranged between the inner core and the outer shell; the inner core can accurately return to the shell every time the inner core is disassembled and assembled, so that the exhaust of the mold is realized, the exhaust gap can be conveniently cleaned, and the accurate positioning of the inner core can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of mold label suction and exhaust, in particular to a label suction device with precise return. Background Art

[0002] If the product produced by the mold needs to be labeled, a label suction device will be used. The label will be pre-absorbed on the label suction device inside the mold. The rear end of the label suction device is connected to the vacuum device. The label suction device uses the vacuum suction force to pre-absorb the label in the mold cavity of the mold, and then molds the plastic product. After the plastic product is molded, the vacuum is released, and the label is attached to the surface of the product. The shape of the label suction device and the inner surface of the mold need to be matched, otherwise it will affect the effect of mold molding; in practical applications, the label suction device can also be used for exhaust in mold production. The gas in the mold is usually difficult to exhaust. The retained gas will have a certain impact on the quality of the product produced. In severe cases, waste will be produced, causing losses to the manufacturer. Therefore, when performing injection molding or blow molding, exhaust holes are usually set on the mold. The traditional method is to directly process the exhaust holes on the mold. However, since the exhaust holes are usually small, the residual metal chips during processing will block the mold exhaust holes. The plastic slurry used in the production process is also easy to block the mold exhaust holes. Since the mold exhaust holes are relatively small, it is difficult to clean them. If they are not cleaned, it will still affect production.

[0003] The technical content disclosed in the Chinese patent document (application number: CN202023127355.7, patent name: mold exhaust structure) is: This application proposes a mold exhaust structure, including an upper mold and a lower mold, which can form a foaming cavity after closing, and an exhaust structure extends from the edge of the foaming cavity, and the two ends of the exhaust structure are respectively an air inlet and an air outlet, the air inlet is connected to the foaming cavity, the air inlet is lower than the air outlet, and the depth of the exhaust structure is less than the depth of the gap opening at the edge of the foaming cavity. The mold exhaust structure in the embodiment of the present application is provided with an exhaust structure, and the gas generated during the foaming molding process of the polyurethane product enters the exhaust structure from the edge of the foaming cavity and is discharged upward from the air outlet, which can reduce the amount of overflow on the basis of sufficient exhaust, thereby not only reducing the amount of invalid edge waste, but also improving the product demolding efficiency.

[0004] It can be seen from the above implementation scheme that the exhaust structure is designed directly on the mold. When the exhaust structure is blocked, it will be difficult to clean the exhaust hole. If the cleaning is not timely or not cleaned thoroughly, it will also have a certain impact on the production and processing. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and designs a detachably connected inner core and outer shell, the outer shell is connected to the mold, the inner core is provided with a ventilation hole, an air outlet, a second air outlet slit and a first air outlet slit are formed between the inner core and the outer shell, the ventilation hole, the air outlet, the second air outlet slit and the first air outlet slit are communicated, the gas inside the mold enters from the first air outlet slit, and is finally discharged to the outside of the mold from the ventilation hole, and an inner core step position and an outer shell internal step position are also provided between the inner core and the outer shell, so that the inner core can be accurately returned to the outer shell each time it is disassembled and assembled, thereby realizing the exhaust of the mold, facilitating the cleaning of the exhaust gap, and realizing the precise positioning of the inner core, so it is easy to install and can be cleaned.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] A precise return label suction device comprises an outer shell and an inner core, wherein the outer shell is connected to a mold;

[0008] The inner core is detachably connected to the inner thread of the outer shell, the inner core includes an inner core step position, and the inner shell step position is arranged inside the outer shell. When the outer shell and the inner core are connected, the inner core step position fits with the inner shell step position;

[0009] The inner core is provided with a ventilation hole, and a first air outlet slit, a second air outlet slit and an air outlet are formed between the outer shell and the inner core;

[0010] The ventilation hole is connected to the air outlet, the air outlet is connected to the second air outlet slit, the second air outlet slit is connected to the first air outlet slit, the first air outlet slit is connected to the inner cavity of the mold, and the ventilation hole is connected to the outside of the mold.

[0011] Furthermore, an inner core thread segment is provided on the outer side of the inner core, the inner core step is located at one end of the inner core thread segment, an inner core ventilation arc surface is provided on the other end of the inner core thread segment, an inner core first ventilation surface is provided on the other end of the inner core ventilation arc surface, the other end of the inner core first ventilation surface is connected to the inner core second ventilation surface, and the other end of the inner core second ventilation surface is connected to the inner core bottom surface.

[0012] Furthermore, a hexagonal seat is arranged inside the inner core, the ventilation center hole is connected to the hexagonal seat, the other end of the ventilation center hole is vertically connected to the ventilation side hole, and the other end of the ventilation side hole is connected to the ventilation arc surface of the inner core.

[0013] Furthermore, an internal thread section is provided inside the shell, the internal step position of the shell is connected to the internal thread section, the other end of the internal thread section is connected to the first ventilation surface of the shell, the other end of the first ventilation surface of the shell is connected to the second ventilation surface of the shell, and the other end of the second ventilation surface of the shell is connected to the bottom surface of the shell.

[0014] Furthermore, the first ventilation surface of the outer shell and the ventilation arc surface of the inner core form an air outlet, the first ventilation surface of the outer shell and the first ventilation surface of the inner core form a second air outlet gap, the second ventilation surface of the outer shell and the second ventilation surface of the inner core form a first air outlet gap, and the inlet end of the ventilation side hole is located on the ventilation arc surface of the inner core.

[0015] Furthermore, the gap of the first air outlet slot is smaller than the gap of the second air outlet slot.

[0016] Furthermore, the gap of the first air outlet slit is 0.02 mm to 0.2 mm.

[0017] Furthermore, the outer shell and the inner core are both made of stainless steel.

[0018] Compared with the prior art, the utility model has the following beneficial effects: a detachably connected inner core and outer shell are designed, the outer shell is connected to the mold, the inner core is provided with a ventilation hole, an air outlet, a second air outlet slit and a first air outlet slit are formed between the inner core and the outer shell, the ventilation hole, the air outlet, the second air outlet slit and the first air outlet slit are communicated, the gas inside the mold enters from the first air outlet slit, and is finally discharged to the outside of the mold from the ventilation hole, and because the inner core and the outer shell are detachable, when these ventilation slits have residual processing iron filings or are blocked by production and processing solutions, the inner core can be directly removed from the outer shell for cleaning, so that relatively thorough cleaning can be achieved.

[0019] Because the inner cavity of the mold usually needs to be set according to the appearance of the molded product, the surface of the inner cavity of the mold is usually irregular in shape. This is why traditional molds directly process ventilation grooves in the mold, because this can avoid the installation surface not matching the original mold inner cavity surface during the secondary installation. The present label suction device is also provided with an inner core step position and an inner step position of the outer shell between the inner core and the outer shell, so that the inner core can be accurately returned to the outer shell each time it is disassembled and assembled. In this way, the bottom surface of the inner core and the bottom surface of the outer shell can always achieve shape matching, and the bottom surface of the label suction device can also be matched with the inner cavity surface of the mold, so that the inner surface of the mold cavity will not change after disassembly and installation. Therefore, the setting of the step position is the key to the accurate return of the inner core, and the accurate return of the inner core is the guarantee of mold production accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is the overall schematic diagram of the label suction device;

[0022] Figure 2 It is a cross-sectional view of the label suction device;

[0023] Figure 3 This is an exploded view of the label suction device;

[0024] Figure 4 is a cross-sectional view of the inner core;

[0025] Figure 5 This is a cross-sectional view of the shell.

[0026] In the figure: 1. inner core; 101. inner core threaded section; 102. inner core step; 103. inner core ventilation arc surface; 104. inner core first ventilation surface; 105. inner core second ventilation surface; 106. inner hexagonal position; 107. ventilation center hole; 108. ventilation side hole; 109. inner core bottom surface; 2. outer shell; 201. inner threaded section; 202. outer shell internal step; 203. outer shell first ventilation surface; 204. outer shell second ventilation surface; 205. outer shell bottom surface; 3. air outlet; 4. second air outlet slit; 5. first air outlet slit. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] like Figures 1 to 5 As shown, a precise return mark suction device is used for sucking marks in the mold cavity and exhausting the inner cavity, comprising an outer shell 2 and an inner core 1, wherein the outer shell 2 is connected to the mold; the inner core 1 is detachably connected to the inner thread of the outer shell 2, and the inner core 1 includes an inner core step position 102, and the outer shell 2 is provided with an outer shell internal step position 202. When the outer shell 2 and the inner core 1 are connected, the inner core step position 102 fits with the outer shell internal step position 202; because the inner cavity of the mold usually needs to be set according to the shape of the molded product, the surface of the inner cavity of the mold is usually irregular in shape, which is why the traditional mold directly processes the ventilation groove in the mold, because this can avoid When the secondary installation is avoided, the installed surface does not match the original mold inner cavity surface. The present label suction device is further provided with an inner core step position 102 and an outer shell internal step position 202 between the inner core 1 and the outer shell 2, so that the inner core 1 can be accurately returned to the outer shell 2 every time, so that the inner core bottom surface 109 of the inner core 1 and the outer shell bottom surface 205 can always achieve shape matching, and the bottom surface of the label suction device can also be matched with the inner cavity surface of the mold, and the inner surface of the mold cavity will not change after disassembly and installation. Therefore, the setting of the step position is the key to the precise return of the inner core 1, and the precise return of the inner core 1 is the guarantee of the mold production accuracy.

[0029] When used as a label suction device inside the mold, because it is provided with a positioning step, the inner core 1 can be accurately returned to the outer shell 2 after each disassembly, so that the inner core bottom surface 109 of the inner core 1 and the outer shell bottom surface 205 can always achieve shape matching, thereby not affecting the molding effect of the product inside the mold. When used as a label suction device, the gap of the first air outlet seam 5 is preferably 0.2mm.

[0030] The inner core 1 is provided with a ventilation hole 107, and a first air outlet slit 5, a second air outlet slit 4 and an air outlet 3 are formed between the outer shell 2 and the inner core 1; the ventilation hole 107 is connected to the air outlet 3, the air outlet 3 is connected to the second air outlet slit 4, the second air outlet slit 4 is connected to the first air outlet slit 5, the first air outlet slit 5 is connected to the inner cavity of the mold, and the ventilation hole 107 is connected to the outside of the mold. The gas inside the mold enters from the first air outlet slit 5 and is finally discharged to the outside of the mold from the ventilation hole 107. Because the inner core 1 and the outer shell 2 are detachable, when these ventilation slits have residual processing iron filings or are blocked by production and processing solutions, the inner core 1 can be directly removed from the outer shell 2 for cleaning, so that a relatively thorough cleaning can be achieved.

[0031] An inner core thread section 101 is arranged on the outer side of the inner core 1, an inner core step position 102 is located at one end of the inner core thread section 101, an inner core ventilation arc surface 103 is arranged on the other end of the inner core ventilation arc surface 101, an inner core first ventilation surface 104 is arranged on the other end of the inner core ventilation arc surface 103, the other end of the inner core first ventilation surface 104 is connected to the inner core second ventilation surface 105, and the other end of the inner core second ventilation surface 105 is connected to the inner core bottom surface 109. An inner hexagonal position 106 is arranged on the inner side of the inner core 1, the inner hexagonal position 106 facilitates the disassembly of the inner core 1, a ventilation middle hole 107 is connected to the inner hexagonal position 106, the other end of the ventilation middle hole 107 is vertically connected to the ventilation side hole 108, and the other end of the ventilation side hole 108 is connected to the inner core ventilation arc surface 103. An internal thread section 201 is provided inside the shell 2, and a step position 202 inside the shell is connected to the internal thread section 201. The other end of the internal thread section 201 is connected to the first ventilation surface 203 of the shell, the other end of the first ventilation surface 203 of the shell is connected to the second ventilation surface 204 of the shell, and the other end of the second ventilation surface 204 of the shell is connected to the bottom surface 205 of the shell. The first ventilation surface 203 of the outer shell and the ventilation arc surface 103 of the inner core form an air outlet 3, the first ventilation surface 203 of the outer shell and the first ventilation surface 104 of the inner core form a second air outlet slit 4, the second ventilation surface 204 of the outer shell and the second ventilation surface 105 of the inner core form a first air outlet slit 5, the inlet end of the ventilation side hole 108 is located on the ventilation arc surface 103 of the inner core, the gap of the first air outlet slit 5 is smaller than the gap of the second air outlet slit 4, so the gas in the mold cavity enters from the first air outlet slit 5, the gap of the first air outlet slit 5 is 0.02mm to 0.2mm, preferably 0.1mm, such a setting makes it easy for gas to enter but not easy for other substances to enter, thereby reducing the risk of blockage.

[0032] The outer shell 2 and the inner core 1 are both made of stainless steel, preferably S136 stainless steel, which is not easy to rust, thereby increasing the service life and durability of the label suction device.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A precise return label suction device, comprising a housing (2) and an inner core (1), characterized in that: The housing (2) is connected to the mold; The outer shell (2) is detachably connected to the inner core (1) via internal threads, the inner core (1) comprises an inner core step position (102), and an outer shell internal step position (202) is arranged inside the outer shell (2), and when the outer shell (2) and the inner core (1) are connected, the inner core step position (102) fits with the outer shell internal step position (202); The inner core (1) is provided with a ventilation hole (107), and a first air outlet slit (5), a second air outlet slit (4) and an air outlet (3) are formed between the outer shell (2) and the inner core (1); The ventilation hole (107) is connected to the air outlet (3), the air outlet (3) is connected to the second air outlet slit (4), the second air outlet slit (4) is connected to the first air outlet slit (5), the first air outlet slit (5) is connected to the inner cavity of the mold, and the ventilation hole (107) is connected to the outside of the mold.

2. A precise return label suction device according to claim 1, characterized in that: An inner core thread section (101) is arranged on the outer side of the inner core (1); an inner core step position (102) is located at one end of the inner core thread section (101); an inner core ventilation arc surface (103) is arranged at the other end of the inner core ventilation arc surface (101); an inner core first ventilation surface (104) is arranged at the other end of the inner core ventilation arc surface (103); the other end of the inner core first ventilation surface (104) is connected to the inner core second ventilation surface (105); and the other end of the inner core second ventilation surface (105) is connected to the inner core bottom surface (109).

3. The label suction device with precise return according to claim 2, characterized in that: The inner side of the inner core (1) is provided with an inner hexagonal position (106), the ventilation center hole (107) is connected to the inner hexagonal position (106), the other end of the ventilation center hole (107) is vertically connected to the ventilation side hole (108), and the other end of the ventilation side hole (108) is connected to the inner core ventilation arc surface (103).

4. The label suction device with precise return according to claim 3, characterized in that: An internal thread section (201) is provided inside the shell (2); a step position (202) inside the shell is connected to the internal thread section (201); the other end of the internal thread section (201) is connected to a first ventilation surface (203) of the shell; the other end of the first ventilation surface (203) of the shell is connected to a second ventilation surface (204) of the shell; and the other end of the second ventilation surface (204) of the shell is connected to a bottom surface (205) of the shell.

5. The label suction device with precise return according to claim 4, characterized in that: The first ventilation surface (203) of the outer shell and the ventilation arc surface (103) of the inner core form an air outlet (3), the first ventilation surface (203) of the outer shell and the first ventilation surface (104) of the inner core form a second ventilation gap (4), the second ventilation surface (204) of the outer shell and the second ventilation surface (105) of the inner core form a first ventilation gap (5), and the inlet end of the ventilation side hole (108) is located on the ventilation arc surface (103) of the inner core.

6. A precise return label suction device according to any one of claims 1 to 5, characterized in that: The gap of the first air outlet slit (5) is smaller than the gap of the second air outlet slit (4).

7. The label suction device with precise return according to claim 6, characterized in that: The gap of the first air outlet slit (5) is 0.02 mm to 0.2 mm.

8. The label suction device with precise return according to claim 7, characterized in that: The outer shell (2) and the inner core (1) are both made of stainless steel.

Images