A multi-stage heating oven and glove production line

Abstract

The utility model relates to glove processing technical field especially, more particularly to a multistage heating oven and glove production line, the multistage heating oven includes box, the heat conducting liquid pipe for conveying heating liquid and electric heater, wherein: the both ends of box along the first horizontal direction are equipped with feed inlet and discharge gate respectively, and the hand mould conveying channel for the hand mould conveying line to pass through is formed between feed inlet and discharge gate, the first heating area and second heating area of the side -by -side distribution along the first horizontal direction are had in the box, and the second heating area is close to discharge gate, the heat conducting liquid pipe is provided in the first heating area or the heat conducting liquid pipe is provided in the first heating area and the second heating area respectively, the electric heater is provided in the second heating area or the electric heater is provided in the first heating area and the second heating area respectively, the advantage of this oven is: there is no natural gas flammable and explosive security risk, avoids the risk of being scalded when the sleeve blank operation easily, reduces the land area of oven.

Description

Technical Field

[0001] This utility model relates to the field of glove processing technology, and in particular to a multi-stage heating oven and glove production line. Background Technology

[0002] The traditional process of a embossed glove dipping production line is as follows: First, the unmolded hand molds are sequentially conveyed to a hot air heating oven and a natural gas combustion oven. The hot air heating oven heats the unmolded hand molds to above 100°C, and the natural gas combustion oven heats them to above 120°C. Next, as soon as the hand molds exit the ovens, the operator quickly performs the die-fitting operation. During this process, the hand molds transfer heat to the glove blanks. Only when the surface temperature of the glove blanks reaches the process requirements can dipping be performed. After dipping, embossing is carried out, followed by a preliminary vulcanization process. After vulcanization, the glove blanks are removed and transported to a drying production line for soaking and drying.

[0003] Traditional embossed glove dipping production line has the following problems: (1) After the hand mold comes out of the oven, the glove blank needs to be manually put on the heated hand mold. It is extremely easy to be burned during the blanking operation. In addition, the dipping is only started after the blanking operation is completed, resulting in low heat energy utilization and the glove blank heating temperature being too low, which affects the embossing quality; (2) Since natural gas is flammable and explosive, traditional production line has certain safety hazards; (3) Two ovens are required to heat the hand mold, which occupies a large area and the process is complicated. Utility Model Content

[0004] The first objective of this invention is to provide a multi-stage heating oven to solve the technical problems existing in the prior art, such as easy burns during manual blanking operations, excessively low heating temperature of the blanks affecting the embossing quality, safety hazards of natural gas ovens, large footprint, and complex process flow.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A multi-stage heating oven includes a chamber, a heat transfer pipe for conveying heating liquid, and an electric heater installed inside the chamber, wherein: The housing is provided with an inlet and an outlet at both ends along the first horizontal direction, and a hand mold conveying channel is formed between the inlet and the outlet for at least one hand mold conveying line to pass through, the hand mold conveying line being used to convey hand molds; the housing has a first heating area and a second heating area arranged side by side along the first horizontal direction, the second heating area being close to the outlet, and the hand mold conveying channel passing through the first heating area and the second heating area; The heat-conducting liquid pipe is provided in the first heating area, or the heat-conducting liquid pipe is provided in both the first heating area and the second heating area; The electric heater is provided in the second heating area, or the electric heater is provided in both the first heating area and the second heating area.

[0006] In some embodiments, the number of the heat-conducting liquid pipes is one, and the heat-conducting liquid pipes extend in a meandering manner and are distributed above or below the hand mold conveying channel; Alternatively, there may be multiple heat-conducting liquid pipes, which may be arranged in a parallel or grid-like pattern above or below the hand mold conveying channel.

[0007] In some embodiments, there are multiple heat-conducting liquid pipes and multiple electric heaters. The multiple heat-conducting liquid pipes extend along a second horizontal direction and are distributed parallel to each other along a first horizontal direction. The multiple electric heaters extend along the second horizontal direction and are distributed parallel to each other along the first horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction. When multiple heat-conducting liquid pipes are disposed in the first heating area and multiple electric heaters are disposed in the second heating area, the multiple heat-conducting liquid pipes and the multiple electric heaters are arranged side by side; When the plurality of heat-conducting liquid pipes are divided into two parts and respectively disposed in the first heating area and the second heating area, the plurality of electric heaters are disposed in the gap between the hand mold conveying channel and the plurality of heat-conducting liquid pipes.

[0008] In some embodiments, the hand mold conveying channel, the electric heater, and the heat-conducting liquid pipe are distributed sequentially from top to bottom; Alternatively, the hand mold conveying channel, the heat-conducting liquid pipe, and the electric heater are distributed sequentially from top to bottom; Alternatively, the heat-conducting liquid pipe, the hand mold conveying channel, and the electric heater are distributed sequentially from top to bottom; Alternatively, the heat-conducting liquid pipe, the electric heater, and the hand mold conveying channel are distributed sequentially from top to bottom; Alternatively, the electric heater, the hand mold conveying channel, and the heat-conducting liquid pipe are distributed sequentially from top to bottom; Alternatively, the electric heater, the heat-conducting liquid pipe, and the hand mold conveying channel are distributed sequentially from top to bottom; Alternatively, the heat-conducting liquid pipe and the electric heater are arranged side by side along the first horizontal direction above or below the hand mold conveying channel; The hand mold conveying channel is used for one of the hand mold conveying lines to pass through.

[0009] In some embodiments, the heating fluid in the heat transfer fluid pipe is oil; And / or, the electric heater is a short-wave infrared heating tube.

[0010] In some embodiments, the housing also has a circulating air duct, an air inlet is provided on the circulating air duct, and an air distribution plate is provided on the side of the circulating air duct near the heat transfer liquid pipe and the electric heater, respectively. The air distribution plate is a plate-shaped structure with multiple through holes distributed on its surface, and the through holes on the air distribution plate form the air outlet of the circulating air duct. The multi-stage heating oven also includes a fan connected to the circulating air duct.

[0011] In some embodiments, a temperature sensor is provided inside the enclosure, and an insulation board is laid on the outer wall of the enclosure.

[0012] In some embodiments, the device further includes an inlet pipe and an outlet pipe, the inlet pipe being connected between the heating device and the inlet of the heat-conducting liquid pipe, and the outlet pipe being connected between the outlet of the heat-conducting liquid pipe and the heating device, wherein an electric regulating valve is provided on the inlet pipe and / or the outlet pipe.

[0013] The second objective of this utility model is to provide a glove production line, which includes a multi-stage heating oven and a hand mold conveying device as described in any of the above claims. The hand mold conveying device includes a conveyor chain, on which a plurality of hand mold rods are sequentially arranged along the first horizontal direction, and each hand mold rod is provided with at least one hand mold.

[0014] In some embodiments, the device further includes an impregnation apparatus disposed on the outer side of the multi-stage heating oven near the discharge port.

[0015] In some embodiments, the heat-conducting liquid pipe is disposed above or below the hand mold conveying channel, and the vertical distance between the palm portion of the hand mold and the heat-conducting liquid pipe is less than or equal to 40 cm. And / or, the electric heater is disposed above or below the hand mold conveying channel, and the vertical distance between the palm part of the hand mold and the electric heater is less than or equal to 40cm; And / or, the distance between the multi-stage heating oven and the impregnation device in the first horizontal direction is less than or equal to 5m.

[0016] In some embodiments, the vertical distance between the palm portion of the hand mold and the heat-conducting liquid pipe is less than or equal to 10 cm; And / or, the vertical distance between the palm portion of the hand mold and the electric heater is less than or equal to 10 cm; And / or, the distance between the multi-stage heating oven and the impregnation device in the first horizontal direction is less than or equal to 2m.

[0017] In some embodiments, the device further includes an embossing device, wherein the multi-stage heating oven, the impregnation device, and the embossing device are distributed sequentially along the first horizontal direction, and the distance between the impregnation device and the embossing device in the first horizontal direction is less than or equal to 5m.

[0018] The beneficial effects of this utility model are: This utility model provides a multi-stage heating oven and glove production line. The multi-stage heating oven includes a box body, a heat-conducting liquid pipe for conveying heating liquid, and an electric heater installed inside the box body. The box body has an inlet and an outlet at both ends along a first horizontal direction, forming a hand mold conveying channel between the inlet and outlet for at least one hand mold conveying line to pass through. The box body has a first heating area and a second heating area arranged side-by-side along the first horizontal direction, with the second heating area close to the outlet. The hand mold conveying channel passes through both the first and second heating areas. A heat-conducting liquid pipe is installed within the first heating area, or heat-conducting liquid pipes are installed in both the first and second heating areas respectively. An electric heater is installed within the second heating area, or an electric heater is installed in both the first and second heating areas respectively.

[0019] The advantages of the multi-stage heating oven provided in this application are: it uses heat-conducting liquid pipes and electric heaters for heating, eliminating the safety hazards of flammable and explosive natural gas; it allows the glove blank to be placed on the hand mold before being sent into the oven for heating, avoiding the risk of burns during the blank placement operation; the two-stage heating method combines the original two ovens into one oven, reducing the oven's footprint and simplifying the processing technology. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A three-dimensional schematic diagram of a multi-stage heating oven provided for an embodiment of this utility model; Figure 2 A longitudinal cross-sectional schematic diagram of a first type of multi-stage heating oven provided for an embodiment of this utility model; Figure 3 A longitudinal cross-sectional schematic diagram of a second type of multi-stage heating oven provided for an embodiment of this utility model; Figure 4 A longitudinal cross-sectional schematic diagram of a third type of multi-stage heating oven provided for an embodiment of this utility model; Figure 5 A longitudinal cross-sectional schematic diagram of a fourth type of multi-stage heating oven provided for an embodiment of this utility model; Figure 6 A top view schematic diagram of a heat-conducting liquid pipe provided for an embodiment of this utility model; Figure 7 A top view schematic diagram of another heat-conducting liquid pipe provided in an embodiment of this utility model; Figure 8 for Figure 2 A partial enlarged view of the first heating zone of a multi-stage heating oven; Figure 9 for Figure 2 A partial enlarged view of the second heating zone of a multi-stage heating oven; Figure 10 for Figure 2 The illustrated embodiment provides a schematic diagram of the structure of a multi-stage heating oven after the top wall of the oven body has been removed. Figure 11 for Figure 10 Enlarged view at point A; Figure 12 for Figure 10 Enlarged view at point B; Figure 13 A schematic diagram of the glove production line provided in an embodiment of this utility model.

[0022] icon: 1-Box body; 11-Hand mold conveying channel; 12-First heating zone; 13-Second heating zone; 14-Circulating air duct; 15-Air inlet; 2-Heat transfer liquid pipe; 3-Electric heater; 4-Air distribution plate; 5-Fan; 6-Liquid inlet pipe; 7-Liquid outlet pipe; 100-Hand mold; 200-Conveyor chain; 300-Hand mold rod; 400-Immersion device; 410-Lifting glue tank; 500-Embossing device. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] It should be noted that in the description of this utility model, the terms "connection" and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Traditional embossed glove dipping production lines require two ovens, with the downstream oven being a natural gas-fired oven. Directly heating the glove blanks in the natural gas-fired oven poses a safety hazard of combustion. Therefore, it is necessary to first heat the un-formed hand molds to above 120°C in the two ovens before placing the glove blanks onto the hand molds, using the heat of the hand molds to heat the surface temperature of the glove blanks to meet the process requirements. Traditional embossed glove dipping production lines suffer from technical problems such as the risk of burns during manual blank-forming, insufficient heating temperature of the glove blanks affecting embossing quality, safety hazards of the natural gas ovens, large footprint of the two ovens, and complex process flow.

[0027] Based on this, the first aspect of this application provides a multi-stage heating oven, referring to... Figures 1 to 3 The multi-stage heating oven includes a chamber body 1, a heat-conducting liquid pipe 2 for conveying heating liquid, and an electric heater 3. The chamber body 1 has an inlet and an outlet at its two ends along a first horizontal direction, forming a hand mold conveying channel 11 between the inlet and outlet for at least one hand mold conveying line to pass through, the hand mold conveying line being used to convey hand molds 100. The chamber body 1 has a first heating area 12 and a second heating area 13 arranged side-by-side along the first horizontal direction. The second heating area 13 is close to the outlet, and the hand mold conveying channel 11 passes through the first heating area 12 and the second heating area 13. A heat-conducting liquid pipe 2 is installed in the first heating area 12, or both the first heating area 12 and the second heating area 13 are equipped with heat-conducting liquid pipes 2. An electric heater 3 is installed in the second heating area 13, or both the first heating area 12 and the second heating area 13 are equipped with electric heaters 3.

[0028] It should be noted that the hand mold conveying device in a glove production line typically includes one or more chain conveyor mechanisms. Each chain conveyor mechanism includes a matching conveyor chain 200, main and driven sprockets, and a motor. Hand molds 100 are mounted on the conveyor chain 200, and each conveyor chain 200 forms a hand mold conveying line as described in this application. During motor startup, the motor drives the conveyor chain 200 to move through the main and driven sprockets, thereby moving the hand molds 100 in one direction. Some hand mold conveying devices also employ robotic, belt, or ball screw conveying methods; regardless of the conveying method, a hand mold conveying line can be formed.

[0029] The advantages of the multi-stage heating oven provided in this application are: (1) The traditional natural gas heating method is abandoned. The heat transfer liquid pipe 2 and electric heater 3 are used for heating, so there is no safety hazard of natural gas being flammable and explosive; (2) In this application, the glove blank can be put on the hand mold 100 before being sent into the oven for heating, thus avoiding the risk of being burned during the blanking operation; (3) The oven has a first heating zone 12 and a second heating zone 13. The first heating zone 12 is equipped with a heat-conducting liquid pipe 2, and the second heating zone 13 is equipped with an electric heater 3 with a higher heating temperature. The internal temperature of the second heating zone 13 is higher than that of the first heating zone 12. Under normal circumstances, the hand mold 100 with the glove blank is heated to above 100°C in the first heating zone 12, and then rapidly heated to above 120°C by the high temperature baking of the electric heater 3 in the second heating zone 13. This multi-stage heating oven design combines the original two ovens into one oven, reduces the floor space of the oven, and simplifies the processing technology.

[0030] like Figure 2 As shown, in one embodiment of this application, the hand mold conveying channel 11 is used for a hand mold conveying line (i.e., a conveyor chain 200) to pass through. Figure 3 As shown, in another embodiment of this application, the hand mold conveying channel 11 is used for multiple hand mold conveying lines (i.e., multiple conveyor chains 200) to pass through. In the two embodiments described above, the former heats only one layer of hand mold 100 at a time, which allows the glove blanks on the hand mold 100 to be heated more evenly and fully; while the latter can increase the number of hand molds 100 heated at one time, thereby improving heating efficiency. During processing, the embodiment where the hand mold conveying channel 11 is used for one conveyor chain 200 to pass through is preferred. Although this reduces the heating efficiency of the oven, it ensures the quality of the product.

[0031] Furthermore, the number of heat transfer fluid pipes 2 can be one, two, or more, and the number of electric heaters 3 can also be one, two, or more. The specific number of heat transfer fluid pipes 2 and electric heaters 3 can be adjusted according to actual heating requirements to ensure that the hand mold 100 can be ultimately heated to above 120°C. When there are two or more electric heaters 3, the number of electric heaters 3 that are turned on can be adjusted according to temperature requirements. Similarly, when there are two or more heat transfer fluid pipes 2, a valve can be installed on each heat transfer fluid pipe 2, and the number of heat transfer fluid pipes 2 that are turned on can be adjusted according to temperature requirements.

[0032] The above technical solution includes four optional embodiments, namely: the first embodiment, as shown in the figure. Figure 2 As shown, heat-conducting liquid pipes 2 are respectively provided in the first heating zone 12 and the second heating zone 13, and the electric heater 3 is only provided in the second heating zone 13; the second embodiment, as shown... Figure 3 As shown, a heat-conducting liquid pipe 2 and an electric heater 3 are respectively provided in the first heating area and the second heating area; in the third embodiment, as shown... Figure 4 As shown, the heat transfer fluid pipe 2 is only located within the first heating zone 12, and the electric heater 3 is only located within the second heating zone 13; in the fourth embodiment, as... Figure 5 As shown, the heat transfer fluid pipe 2 is only located within the first heating zone 12, and electric heaters 3 are respectively installed in the first heating zone and the second heating zone. It is understandable that... Figures 2 to 5 The boundary between the first heating region 12 and the second heating region 13 is represented by a dashed line. However, this boundary is only used to illustrate the four distribution methods of the heat transfer fluid pipe 2 and the electric heater 3. In reality, there is no strict boundary between the first and second heating regions.

[0033] All four embodiments described above can adjust the number of heating pipes 2 and electric heaters 3 that are turned on to make the temperature of the second heating zone 13 higher than that of the first heating zone 12, thereby achieving the purpose of two-stage heating of the hand mold 100; they can also form two or more heating zones with different temperatures in the first heating zone 12 and the second heating zone 13, thereby achieving the purpose of more-stage heating of the hand mold 100.

[0034] In a preferred embodiment, the heat transfer fluid pipe 2 is divided into two parts and respectively disposed in the first heating zone 12 and the second heating zone 13, while the electric heater 3 is disposed only in the second heating zone 13. Thus, the heat in the second heating zone 13 can be provided jointly by the heat transfer fluid pipe 2 and the electric heater 3, ensuring that the internal temperature of the oven increases progressively from the inlet to the outlet, and saving the amount of electric heater 3 required while meeting the multi-stage heating requirements.

[0035] Continue to refer to Figure 1The chamber 1 consists of a profile frame and wall panels fixed around the profile frame. A door is provided on the side wall of the chamber 1. The profile frame provides support for the various components of the oven, while the wall panels create a relatively enclosed heating environment inside the chamber 1.

[0036] In some embodiments, the heating fluid in the heat transfer fluid pipe 2 is oil. Alternatively, the heating fluid may be other liquids such as water.

[0037] In some embodiments, the electric heater 3 is a short-wave infrared heating tube. Alternatively, the electric heater 3 may also be plate-shaped, block-shaped, or other similar configurations.

[0038] Reference Figure 6 and Figure 7 As an optional embodiment, the number of heat-conducting liquid pipes 2 is one, and the heat-conducting liquid pipe 2 extends in a meandering manner and is distributed above or below the hand mold conveying channel 11; or, the number of heat-conducting liquid pipes 2 is multiple, and the multiple heat-conducting liquid pipes 2 are distributed in a side-by-side or grid-like manner above or below the hand mold conveying channel 11.

[0039] Furthermore, the multi-stage heating oven also includes an inlet pipe 6 and an outlet pipe 7. The inlet pipe 6 connects the heating device and the inlet of each heat transfer liquid pipe 2, while the outlet pipe 7 connects the outlet of each heat transfer liquid pipe 2 and the heating device. An electric regulating valve is installed on the inlet pipe 6 and / or the outlet pipe 7. The heating device can be a boiler heating device. The amount of heating liquid entering the oven can be adjusted by the electric regulating valve on the inlet pipe 6 and / or the outlet pipe 7, thereby controlling the internal temperature of the oven.

[0040] As an optional embodiment, the number of electric heaters 3 is one, and the electric heaters 3 are distributed above or below the hand mold conveying channel 11; or, the number of electric heaters 3 is multiple, and the multiple electric heaters 3 are distributed in a side-by-side or grid-like manner above or below the hand mold conveying channel 11.

[0041] Based on the above structure, the hand mold conveying channel 11, the heat transfer liquid pipe 2, and the electric heater 3 can be arranged in the following ways: Firstly, as shown in... Figure 2 As shown, in the first arrangement, the hand mold conveying channel 11, the electric heater 3, and the heat transfer fluid pipe 2 are distributed from top to bottom; in the second arrangement, the hand mold conveying channel 11, the heat transfer fluid pipe 2, and the electric heater 3 are distributed from top to bottom; in the third arrangement, the heat transfer fluid pipe 2, the hand mold conveying channel 11, and the electric heater 3 are distributed from top to bottom; in the fourth arrangement, the heat transfer fluid pipe 2, the electric heater 3, and the hand mold conveying channel 11 are distributed from top to bottom; in the fifth arrangement, as shown... Figure 5 As shown, the electric heater 3, the hand mold conveying channel 11, and the heat transfer fluid pipe 2 are distributed from top to bottom; the sixth type, the electric heater 3, the heat transfer fluid pipe 2, and the hand mold conveying channel 11 are distributed from top to bottom; the seventh type, as shown... Figure 4 As shown, the heat-conducting liquid pipe 2 and the electric heater 3 are arranged side by side along the first horizontal direction above or below the hand mold conveying channel 11.

[0042] All of the above arrangement methods can achieve the purpose of multi-stage heating of the hand mold 100.

[0043] In some embodiments, the heat-conducting liquid pipe 2 is disposed above or below the hand mold 100, and the vertical distance between the palm portion of the hand mold 100 and the heat-conducting liquid pipe 2 is less than or equal to 40 cm; and / or, the electric heater 3 is disposed above or below the hand mold 100, and the vertical distance between the palm portion of the hand mold 100 and the electric heater 3 is less than or equal to 40 cm. Further, the vertical distance between the palm portion of the hand mold 100 and the heat-conducting liquid pipe 2 is less than or equal to 10 cm; and / or, the vertical distance between the palm portion of the hand mold 100 and the electric heater 3 is less than or equal to 10 cm.

[0044] Reference Figure 2 In some embodiments where the electric heater 3 is positioned between the hand mold conveying channel 11 and the heat-conducting liquid pipe 2 (including the first and fourth arrangement methods described above), the vertical distance between the palm part of the hand mold 100 and the electric heater 3 is less than or equal to 10cm, the vertical distance between the palm part of the hand mold 100 and the heat-conducting liquid pipe 2 ranges from 10cm to 40cm, and space is left between the hand mold 100 and the heat-conducting liquid pipe 2 for installing the electric heater 3.

[0045] In some embodiments (including the second and sixth arrangements mentioned above), where the heat-conducting liquid pipe 2 is positioned between the hand mold conveying channel 11 and the electric heater 3, the vertical distance between the palm part of the hand mold 100 and the heat-conducting liquid pipe 2 is less than or equal to 10cm, the vertical distance between the palm part of the hand mold 100 and the electric heater 3 ranges from 10cm to 40cm, and space is left between the hand mold 100 and the electric heater 3 for installing the heat-conducting liquid pipe 2.

[0046] Reference Figure 4 In some embodiments where the heat-conducting liquid pipe 2 and the electric heater 3 are arranged side by side (i.e., the seventh arrangement mentioned above), the distance between the palm part of the hand mold 100 and the heat-conducting liquid pipe 2 and the electric heater 3 in the vertical direction is less than or equal to 10cm.

[0047] Reference Figure 5 In some embodiments (including the third and fifth arrangements mentioned above), where the hand mold conveying channel 11 is located between the heat-conducting liquid pipe 2 and the electric heater 3, the vertical distance between the palm part of the hand mold 100 and the heat-conducting liquid pipe 2 and the electric heater 3 is less than or equal to 10cm.

[0048] In some embodiments, the heat-conducting liquid pipe 2 and the electric heater 3 are both distributed below the hand mold conveying channel 11 (including the first, second, and seventh arrangements mentioned above), with the palm portion of the hand mold 100 within the hand mold conveying channel 11 facing downwards. In other embodiments, the heat-conducting liquid pipe 2 and the electric heater 3 may also be distributed above the hand mold conveying channel 11 (including the fourth, sixth, and seventh arrangements mentioned above), with the palm portion of the hand mold 100 within the hand mold conveying channel 11 facing upwards. Both of these technical solutions aim to allow the heat-conducting liquid pipe 2 and the electric heater 3 to directly heat the palm portion of the glove blank, avoiding quality problems caused by excessively high temperatures in other parts of the hand mold 100.

[0049] In some embodiments, there are multiple heat-conducting liquid pipes 2 and multiple electric heaters 3. The multiple heat-conducting liquid pipes 2 extend along a second horizontal direction and are distributed parallel to each other along a first horizontal direction. The multiple electric heaters 3 extend along a second horizontal direction and are distributed parallel to each other along the first horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction. (Refer to...) Figure 2 and Figure 3 When the multiple heat-conducting liquid pipes 2 are divided into two parts and respectively disposed in the first heating area 12 and the second heating area 13, the multiple electric heaters 3 are disposed in the gap between the hand mold conveying channel 11 and the multiple heat-conducting liquid pipes 2. (Refer to...) Figure 4 When multiple heat transfer fluid pipes 2 are all located in the first heating zone 12 and multiple electric heaters 3 are all located in the second heating zone 13, the multiple heat transfer fluid pipes 2 and multiple electric heaters 3 are arranged side by side.

[0050] Using the above technical solution, the distance between the electric heater 3 and the palm part of the hand mold 100 is very small. The high temperature of the electric heater 3 can quickly raise the temperature of the glove blank on the hand mold 100, ensuring that the surface temperature of the glove blank meets the process requirements after it leaves the oven.

[0051] Continue to refer to Figure 8 and Figure 9 In some embodiments, the housing 1 also includes a circulating air duct 14, with an air inlet 15 provided on the circulating air duct 14. Air distribution plates 4 are respectively provided on the side of the circulating air duct 14 closest to the heat transfer fluid pipe 2 and the electric heater 3; (Refer to...) Figures 10 to 12 The air distribution plate 4 has a plate-like structure with multiple through holes distributed on its surface. These through holes form the air outlets of the circulating air duct 14. The multi-stage heating oven also includes a fan 5 connected to the circulating air duct 14, which supplies air to the circulating air duct 14. The number of fans 5 can be adjusted according to the length of the oven.

[0052] Using the above technical solution, during the operation of the oven, the fan 5 continuously supplies air into the circulating air duct 14 through the air inlet 15. The air in the circulating air duct 14 flows through the through holes on the air distribution plate 4 in the form of multiple airflows to the heat transfer pipe 2 and the electric heater 3. This airflow can blow the heat from the heat transfer pipe 2 and the electric heater 3 onto the hand mold 100, making the hand mold 100 more evenly heated.

[0053] In some embodiments, the housing 1 is provided with a circulating air outlet communicating with the first heating zone 12 and the second heating zone 13. The circulating air outlet and the air inlet 15 are connected through a gas pipe, and the fan 5 is connected to the gas pipe. The circulating air outlet can be located on the top, bottom, or side wall of the housing 1, and the position of the circulating air outlet can be adjusted according to the distribution of the heat transfer liquid pipe 2, the electric heater 3, and the circulating air duct 14. The fan 5 can be as follows: Figure 1 The gas duct is mounted on the chamber 1 as shown, or it can be mounted on the ground using a bracket. Furthermore, the gas duct can be located inside or outside the chamber 1. In this structure, the fan 5 draws air from inside the oven through the circulating air outlet and delivers it to the circulating air duct 14, achieving air circulation inside the oven.

[0054] In some embodiments, a temperature sensor is installed inside the oven body 1 to detect the internal temperature of the oven in real time, so that the heating temperature of the hand mold 100 is maintained within the optimal range. An insulation board is laid on the outer wall of the oven body 1 to seal and insulate the interior of the oven.

[0055] In summary, as a preferred embodiment, refer to Figure 1 and Figure 2 There are multiple electric heaters 3 arranged side by side along the first horizontal direction, and multiple heat transfer fluid pipes 2 arranged side by side along the first horizontal direction. The multiple heat transfer fluid pipes 2 are divided into two parts and respectively set in the first heating area 12 and the second heating area 13. The hand mold conveying channel 11, electric heaters 3, heat transfer fluid pipes 2 and circulating air duct 14 are arranged from top to bottom. The hand mold conveying channel 11 is used for a conveying chain 200 to pass through. The hand mold 100 in the hand mold conveying channel 11 is set with the palm part facing down. The top of the box 1 is provided with a circulating air outlet connecting the first and second heating areas. The circulating air outlet is connected to the air inlet 15 of the circulating air duct 14 through a gas pipe. A fan 5 is provided on the gas pipe. During operation, the above-mentioned technical solution forms at least two heating zones with increasing temperatures from the inlet to the outlet inside the oven through the heat transfer pipe 2 and the electric heater 3, thereby achieving multi-stage heating of the glove blank on the hand mold 100. At the same time, the airflow generated by the circulating air duct 14 and the fan 5 blows the heat from the heat transfer pipe 2 and the electric heater 3 toward the hand mold 100, and realizes air circulation inside the oven, making the heating of the hand mold 100 more uniform.

[0056] A second aspect of this application provides a glove production line, referring to... Figure 13 The glove production line includes a multi-stage heating oven and a hand mold conveying device as described in any of the above embodiments. The hand mold conveying device includes at least one conveyor chain 200, and each conveyor chain 200 has a plurality of hand mold rods 300 arranged sequentially along a first horizontal direction. Each hand mold rod 300 has at least one hand mold 100. Figure 12 In the embodiment shown, in order to improve heating efficiency, multiple hand molds 100 are sequentially arranged on each hand mold rod 300 along the second horizontal direction.

[0057] Continue to refer to Figure 13 The glove production line also includes a dipping device 400, which is located on the outer side of the multi-stage heating oven near the discharge port. The dipping device 400 includes a lifting glue tank 410, which is positioned below the conveyor chain 200 and moves up and down under the drive of a piston cylinder, motor, or other drive source. When the lifting glue tank 410 is in the raised state, the hand mold 100 located directly above the lifting glue tank 410 on the conveyor chain 200 is immersed in the glue solution within the lifting glue tank 410. When the lifting glue tank 410 is in the lowered state, the hand mold 100 located directly above the lifting glue tank 410 on the conveyor chain 200 is removed from the lifting glue tank 410. Thus, the dipping process is achieved through the lifting movement of the lifting glue tank 410.

[0058] In some embodiments, the impregnation apparatus 400 further includes a rotation mechanism for driving the individual hand mold rods 300 to rotate, thereby causing the hand molds 100 on the hand mold rods 300 to rotate or swing.

[0059] Furthermore, the glove production line also includes an embossing device 500, a multi-stage heating oven, an impregnation device 400, and the embossing device 500 being distributed sequentially along the first horizontal direction.

[0060] Based on the above structure, the distance between the multi-stage heating oven and the impregnation device 400 in the first horizontal direction is less than or equal to 5m. Preferably, the distance between the multi-stage heating oven and the impregnation device 400 in the first horizontal direction is less than or equal to 2m. For example, the distance between the multi-stage heating oven and the impregnation device 400 in the first horizontal direction is 0.5m, 1m, 1.5m, 1.8m, 2m, etc.

[0061] Furthermore, the distance between the impregnation device 400 and the embossing device 500 in the first horizontal direction is less than or equal to 5m. Preferably, the distance between the impregnation device 400 and the embossing device 500 in the first horizontal direction is less than or equal to 2m. For example, the distance between the impregnation device 400 and the embossing device 500 in the first horizontal direction is 0.5m, 1m, 1.5m, 1.8m, 2m, etc.

[0062] Using the above technical solution, the hand mold 100 with the glove blank is immediately dipped in glue by the glue-dipping device 400 within 2m of exiting the drying oven. After the glue-dipping process is completed, it is immediately dipped in the embossing device 500 for embossing. Then, it is directly vulcanized, soaked in water, dried and other processes on the glove production line to complete the glove production in one go.

[0063] The hand mold conveying device, the glue-impregnating device 400, and the embossing device 500 in this application are all prior art and will not be described in detail here.

[0064] In summary, the glove production line provided in this application has the following advantages due to its multi-stage heating oven: (1) A multi-stage heating oven is used instead of the traditional two ovens, which reduces the space occupied by the oven; (2) The heating method of using heat-conducting liquid pipe 2 combined with electric heater 3 replaces the traditional natural gas combustion heating method, which solves the safety hazard of natural gas being flammable and explosive. In addition, the oven directly heats the hand mold 100 with the glove blank, so there will be no scalding of the operator. Furthermore, since the oven directly heats the glove blank, it avoids the waste of heat energy from secondary transmission in the traditional heating method, improves the heat energy utilization efficiency, and reduces production costs. (3) An electric heater 3 is provided at one end of the oven near the discharge port. The electric heater 3 is used to directionally heat the palm part of the hand mold 100. The number of electric heaters 3 that can be turned on can be adjusted according to the temperature requirements. This satisfies the production process requirements and avoids the quality problem of excessive temperature in other parts of the hand mold 100. (4) After the glove blank reaches the required temperature in the oven, the glue dipping process is carried out directly within 2 meters after it leaves the oven, avoiding the waste of heat energy in the traditional process of delayed glue dipping. (5) The traditional two production lines (embossing line + baking line) are merged into one production line, saving production line space, optimizing process flow and increasing production capacity.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions, or the rearrangement of the above embodiments, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-stage heating oven characterized by, It includes a housing (1), a heat transfer pipe (2) for conveying heating liquid, and an electric heater (3), wherein: The housing (1) has an inlet and an outlet at both ends along the first horizontal direction, and a hand mold conveying channel (11) is formed between the inlet and the outlet for at least one hand mold conveying line to pass through, the hand mold conveying line being used to convey hand molds (100); the housing (1) has a first heating area (12) and a second heating area (13) arranged side by side along the first horizontal direction, the second heating area (13) being close to the outlet, and the hand mold conveying channel (11) passing through the first heating area (12) and the second heating area (13); The heat-conducting liquid pipe (2) is provided in the first heating area (12) or the heat-conducting liquid pipe (2) is provided in the first heating area (12) and the second heating area (13) respectively. The electric heater (3) is provided in the second heating zone (13), or the electric heater (3) is provided in both the first heating zone (12) and the second heating zone (13).

2. The multi-stage heating oven of claim 1, wherein, The number of the heat-conducting liquid pipe (2) is one, and the heat-conducting liquid pipe (2) extends in a meandering shape and is distributed above or below the hand mold conveying channel (11); Alternatively, there may be multiple heat-conducting liquid pipes (2), which may be arranged in a side-by-side or grid pattern above or below the hand mold conveying channel (11).

3. The multi-stage heating oven of claim 2, wherein, The number of heat-conducting liquid pipes (2) and electric heaters (3) are both multiple. The multiple heat-conducting liquid pipes (2) extend along the second horizontal direction and are distributed parallel to each other along the first horizontal direction. The multiple electric heaters (3) extend along the second horizontal direction and are distributed parallel to each other along the first horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction. When multiple heat-conducting liquid pipes (2) are all disposed in the first heating area (12) and multiple electric heaters (3) are all disposed in the second heating area (13), the multiple heat-conducting liquid pipes (2) and the multiple electric heaters (3) are arranged side by side; When the multiple heat-conducting liquid pipes (2) are divided into two parts and respectively disposed in the first heating area (12) and the second heating area (13), the multiple electric heaters (3) are disposed in the gap between the hand mold conveying channel (11) and the multiple heat-conducting liquid pipes (2).

4. The multi-stage heating oven of claim 1, wherein, The hand mold conveying channel (11), the electric heater (3), and the heat-conducting liquid pipe (2) are distributed from top to bottom; Alternatively, the hand mold conveying channel (11), the heat-conducting liquid pipe (2), and the electric heater (3) are distributed sequentially from top to bottom; Alternatively, the heat-conducting liquid pipe (2), the hand mold conveying channel (11), and the electric heater (3) are distributed sequentially from top to bottom; Alternatively, the heat-conducting liquid pipe (2), the electric heater (3), and the hand mold conveying channel (11) are distributed sequentially from top to bottom; Alternatively, the electric heater (3), the hand mold conveying channel (11), and the heat-conducting liquid pipe (2) are distributed from top to bottom; Alternatively, the electric heater (3), the heat-conducting liquid pipe (2), and the hand mold conveying channel (11) are distributed from top to bottom; Alternatively, the heat-conducting liquid pipe (2) and the electric heater (3) are arranged side by side along the first horizontal direction above or below the hand mold conveying channel (11); The hand mold conveying channel (11) is used for one of the hand mold conveying lines to pass through.

5. The multi-stage heating oven of claim 1, wherein, The heating liquid in the heat-conducting liquid pipe (2) is oil; And / or, the electric heater (3) is a short-wave infrared heating tube.

6. The multi-stage heating oven of claim 1, wherein, The housing (1) also has a circulating air duct (14), and an air inlet (15) is provided on the circulating air duct (14). A distribution plate (4) is provided on the side of the circulating air duct (14) near the heat transfer liquid pipe (2) and the electric heater (3). The distribution plate (4) is a plate-shaped structure with multiple through holes distributed on its surface. The through holes on the distribution plate (4) form the air outlet of the circulating air duct (14). The multi-stage heating oven also includes a fan (5) connected to the circulating air duct (14).

7. The multi-stage heating oven of claim 1, wherein, A temperature sensor is installed inside the box (1), and an insulation board is laid on the outer wall of the box (1).

8. The multi-stage heating oven of claim 1, wherein, It also includes an inlet pipe (6) and an outlet pipe (7). The inlet pipe (6) is connected between the heating device and the inlet of the heat-conducting liquid pipe (2). The outlet pipe (7) is connected between the outlet of the heat-conducting liquid pipe (2) and the heating device. An electric regulating valve is provided on the inlet pipe (6) and / or the outlet pipe (7).

9. A glove production line characterized in that, The invention includes a multi-stage heating oven and a hand mold conveying device as described in any one of claims 1 to 8, wherein the hand mold conveying device includes at least one conveying chain (200), and a plurality of hand mold rods (300) are sequentially arranged on each of the conveying chains (200) along the first horizontal direction, and at least one hand mold (100) is arranged on each of the hand mold rods (300), and each of the conveying chains (200) forms a hand mold conveying line.

10. The glove production line of claim 9, wherein, It also includes a dipping device (400), which is located on the outside of the multi-stage heating oven near the discharge port.

11. The glove production line of claim 10, wherein, The heat-conducting liquid pipe (2) is located above or below the hand mold conveying channel (11), and the vertical distance between the palm part of the hand mold (100) and the heat-conducting liquid pipe (2) is less than or equal to 40cm. And / or, the electric heater (3) is disposed above or below the hand mold conveying channel (11), and the vertical distance between the palm part of the hand mold (100) and the electric heater (3) is less than or equal to 40cm; And / or, the distance between the multi-stage heating oven and the impregnation device (400) in the first horizontal direction is less than or equal to 5m.

12. The glove production line of claim 11, wherein, The vertical distance between the palm part of the hand mold (100) and the heat-conducting liquid pipe (2) is less than or equal to 10cm; And / or, the vertical distance between the palm portion of the hand mold (100) and the electric heater (3) is less than or equal to 10 cm; And / or, the distance between the multi-stage heating oven and the impregnation device (400) in the first horizontal direction is less than or equal to 2m.

13. The glove production line of claim 10, wherein, It also includes an embossing device (500), wherein the multi-stage heating oven, the impregnation device (400) and the embossing device (500) are distributed sequentially along the first horizontal direction, and the distance between the impregnation device (400) and the embossing device (500) in the first horizontal direction is less than or equal to 5m.

Images