A plastic bottle drying device

Abstract

The present application relates to drying device technical field, specifically to a kind of plastic bottle drying device, including oven and conveying belt, one or more for blowing hot air air pipe for blowing hot air is distributed along the conveying belt circumferentially on the conveying belt, and the outer circumferential side of air pipe is equipped with the holding assembly for holding plastic bottle;At least one locking assembly is equipped on holding assembly, and locking assembly includes reset member and locking member, and locking member can be switched relative to holding assembly between unlocking position and locking position, in unlocking position, locking member is removed from insertion space to form avoidance to bottle mouth in / out insertion space;In locking position, locking member at least part extends into insertion space and forms limiting to convex ring above convex ring of bottle mouth;Position between upper side and lower side is equipped with linkage member capable of forming linkage with locking member;The present scheme can prevent plastic bottle from being pushed out and falling when air pipe blows hot air to dry, and also can facilitate feeding and discharging.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying devices, in particular to a plastic bottle drying device. BACKGROUND

[0002] In the manufacturing process of plastic bottles, after the bottle body is manufactured, it needs to be cleaned and dried, etc. The drying step is usually carried out in an oven, using hot air or electric heating to dry.

[0003] The traditional drying method is to place the bottle (with the nozzle upwards) on the conveyor belt and bring it into the oven for drying. Although this method can achieve drying, it is difficult to drain the water in the bottle, and it is also not conducive to directly drying the inside of the bottle.

[0004] Therefore, in the related art, a wind pipe capable of blowing hot air is provided on the conveyor belt. During drying, the bottle is arranged on the wind pipe in an inverted manner. At this time, the wind pipe extends into the inside of the bottle, and the nozzle of the bottle faces downward. In this way, during drying, the wind pipe can directly blow hot air into the inside of the bottle, thereby bringing out the moisture in the bottle, and the accumulated water in the bottle can flow out from the nozzle under the action of gravity. In this way, the drying effect is greatly improved. For such a drying device, please refer to the patent document with the publication number CN115143750B for a kind of bottom concave type wine bottle drying device.

[0005] Although the drying device with the wind pipe has good drying effect, it still has defects in use. Taking the scheme disclosed in the above patent document as an example, it is mainly aimed at glass bottles with large self-weight such as wine bottles, but it is difficult to be applied to light bottles such as plastic bottles. The main reason is that:

[0006] Because the plastic bottle is light, if it is not fixed, the wind pipe will easily push the bottle upwards when blowing air in the bottle, causing it to fall off the wind pipe.

[0007] If a fixing structure is provided at the position of the wind pipe to fix the plastic bottle, it is not conducive to the discharging operation during use. For example, in the above scheme, if the fixing pipe is arranged in a structure that can be interference-fitted with the nozzle, the nozzle is clamped in the fixing pipe, which can fix the plastic bottle. However, when discharging after the plastic bottle is dried, the nozzle is still clamped in the fixing pipe, so the bottle needs to be pulled out of the fixing pipe by force by a person or a mechanical hand. The bottle cannot automatically fall off the conveyor belt, so it needs to be improved. SUMMARY

[0008] In order to solve at least one technical problem mentioned in the background art, the purpose of the present application is to provide a plastic bottle drying device.

[0009] To achieve the above object, the present application provides the following technical solutions:

[0010] The plastic bottle drying device, the bottle mouth of the plastic bottle is provided with a convex ring, the drying device comprises an oven and a conveying belt, the conveying belt at least partially passes through the oven horizontally and forms an upper feeding side and a lower feeding side on both sides of the oven respectively, the conveying belt is provided with one or more air pipes for blowing hot air which are distributed circumferentially along the conveying belt, the outer circumferential side of the air pipe is provided with a holding assembly for holding the plastic bottle, the holding assembly comprises an insertion space for the vertical downward insertion of the bottle mouth of the plastic bottle; the holding assembly is provided with at least one locking assembly, the locking assembly comprises a reset member and a locking member, the locking member can be switched between an unlocking position and a locking position relative to the holding assembly, in the unlocking position, the locking member moves out of the insertion space to form an avoidance for the bottle mouth to enter / exit the insertion space; in the locking position, the locking member at least partially extends into the insertion space and forms a limit for the convex ring above the convex ring of the bottle mouth; the reset member is used to provide a reset force to drive the locking member into the unlocking position; the position between the upper feeding side and the lower feeding side is provided with a linkage member capable of forming linkage with the locking member, when the linkage member acts on the locking member, the locking member overcomes the reset force of the reset member and enters the locking position.

[0011] Compared with the prior art, the advantages of the present application are that:

[0012] In the present application, the locking assembly is arranged on the holding assembly, and the linkage member is arranged, so that:

[0013] Since the linkage member is between the upper feeding side and the lower feeding side, when feeding, the locking member will not be affected by the linkage member, so that the locking member is in the unlocking position under the reset force of the reset member, so that the locking member will not form an obstacle in the insertion space, so as to ensure that the plastic bottle can be easily inserted into the holding assembly in an inverted position, and the plastic bottle is held by the holding assembly and driven forward by the conveying belt; when the locking member enters the linkage member together with the holding assembly, the linkage member will act on the locking member, so that the locking member overcomes the reset member and enters the locking position, so that the end of the locking member will extend into the insertion space and be above the convex ring on the bottle mouth of the plastic bottle, so that the plastic bottle cannot be pulled out of the holding assembly under the limitation of the locking member, that is, the plastic bottle is locked on the holding assembly, so that when the plastic bottle enters the oven, since the convex ring of the plastic bottle is limited by the locking member, even if the air pipe blows hot air upward, the hot air cannot push the plastic bottle out of the holding assembly, so as to ensure that the plastic bottle will not fall out during the hot air drying process through the air pipe.

[0014] When the plastic bottle is output from the oven to the unloading side, the locking member is separated from the linkage member, and the linkage member no longer acts on the locking member. At this time, the locking member is restored to the unlocking position by the restoring force provided by the restoring member. The locking member is moved away from the upper side of the convex ring, and no longer limits and locks the convex ring. When the plastic bottle is continuously conveyed to the lower side of the conveying belt, the plastic bottle can automatically fall from the supporting assembly under the action of gravity, without the need for a person or a mechanical hand to take the plastic bottle off the supporting assembly, thereby facilitating unloading.

[0015] As can be seen from the above, the locking assembly is provided to lock the plastic bottle to prevent it from being pushed out and falling during drying by the air pipe. However, the locking assembly is in an unlocked state during loading and unloading, so that the locking assembly does not interfere with loading and unloading, thereby facilitating unloading and facilitating the insertion of the plastic bottle into the supporting assembly.

[0016] Preferably, the locking member is horizontally movably arranged relative to the supporting assembly, and includes a locking end and a linkage end. The locking end is used to limit the convex ring. The linkage end is used to contact and link with the linkage member.

[0017] Preferably, the linkage member is at least partially located in the oven and extends transversely above the conveying belt. The linkage member includes a first guide surface and a second guide surface. The first guide surface extends transversely and is used to abut against the linkage end. When the linkage end contacts the first guide surface, the locking end enters the locking position under the push of the first guide surface. The second guide surface is connected to one end of the first guide surface close to the loading side, and the second guide surface extends outwardly and obliquely relative to the first guide surface.

[0018] Preferably, the linkage end includes a roller, and / or the locking end includes an arc-shaped recessed socket.

[0019] Preferably, the restoring member includes a support, a guide rod, and a spring. The support is relatively fixed relative to the supporting assembly. The locking member is longitudinally slidably arranged on the support. The guide rod is longitudinally movably arranged on the support. One end of the guide rod is fixed to the locking member, and the other end of the guide rod is provided with a stop block. The spring is sleeved on the portion of the guide rod between the stop block and the support. One end of the spring abuts against the stop block, and the other end of the spring abuts against the support.

[0020] Preferably, the end of the guide rod connected to the locking member forms a bent portion. In the unlocking position, the bent portion abuts against the support to keep the locking end in the unlocking position.

[0021] As preferred, the holding component comprises a holding part and a straight pipe part, the holding part is a bucket-shaped mechanism with wide top and narrow bottom, the straight pipe part is connected to the lower end of the holding part; two lateral sides of the holding component in the transverse direction are respectively provided with a cutout, the cutout penetrates the holding part and the straight pipe part so that the holding component forms two single bodies arranged in longitudinal symmetry; the locking member is arranged at the position of the straight pipe part.

[0022] As preferred, a transversely extending friction strip is arranged above the linkage member in the oven, the friction strip is used for contacting the outer peripheral wall of the plastic bottle to drive the plastic bottle to rotate.

[0023] As preferred, a bellows is arranged below the upper belt surface of the conveying belt in the oven, the bellows has a wind cavity inside, the upper wall of the bellows is provided with an air outlet extending in the transverse direction and communicating with the wind cavity; the upper belt surface of the conveying belt is attached to the upper wall of the bellows; the conveying belt is provided with a ventilation hole, the lower end of the air pipe communicates with the ventilation hole; the ventilation hole is located in the extension path of the air outlet.

[0024] As preferred, two guide rails are arranged at the two ends of the conveying belt, the guide rails are in the same winding direction as the conveying belt, a sliding block is slidably arranged on the guide rail, and a mounting seat is fixedly connected to the sliding block; the air pipe passes through the mounting seat; the locking assembly and the holding assembly are both mounted on the mounting seat.

[0025] Other advantages and effects of the present application are specifically explained in the specific embodiments and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the present application;

[0027] Figure 2 is a top view of the present application;

[0028] Figure 3 is a partial schematic diagram of the holding assembly position of the present application;

[0029] Figure 4 is a longitudinal sectional view of the present application;

[0030] Figure 5 is a split view of the conveying belt and the bellows of the present application;

[0031] Figure 6 is a state diagram of the locking member in the unlocking position of the present application;

[0032] Figure 7 is a state diagram of the locking member in the locking position of the present application;

[0033] Figure 8 is a schematic diagram of the locking member in the locking position after the plastic bottle is placed in the present application. DETAILED DESCRIPTION

[0034] The technical solutions of the embodiments of the present application will be explained and described below in combination with the drawings of the embodiments of the present application. The following embodiments are only preferred embodiments of the present application, and not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0035] In the following description, the appearance of terms such as "inner", "outer", "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, is only for the convenience of describing the embodiments and simplifying the description, and is not indicative or suggestive of the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] Please refer to Figures 1-8 It is worth noting that, as Figure 4 The present device is mainly applied to a plastic bottle M with a convex ring M2 arranged on the outer periphery of the bottle mouth M1. It can be understood that the bottle mouth M1 position of most of the existing plastic bottles M will be provided with a convex ring M2 to limit the screwing depth of the bottle cap, such as beverage bottles, etc. Therefore, this embodiment will not make too much elaboration on the plastic bottle M with the convex ring M2.

[0037] As Figure 1 The drying device provided by the present embodiment mainly comprises an oven 1 and a conveying belt 2. The conveying belt 2 can adopt a conveyor belt. The specific structure of the conveyor belt is more explained and applied in the prior art, so it will not be elaborated here. In the present embodiment, the conveying belt 2 extends horizontally along the transverse direction, thereby forming an upper belt surface and a lower belt surface extending horizontally.

[0038] As Figure 1 The conveying belt 2 at least partially passes horizontally through the oven 1 and forms an upper feeding side 21 and a lower feeding side 22 on both sides of the oven 1. Specifically, the oven 1 in the present embodiment is provided with an inlet 11 and an outlet on the two opposite side walls in the transverse direction, respectively. The upper belt surface of the conveying belt 2 passes through the oven 1 through the inlet 11 and the outlet. The side of the conveying belt 2 corresponding to the inlet 11 forms the upper feeding side 21, and the side corresponding to the outlet forms the lower feeding side 22. In addition, it is worth noting that the discharging is mainly carried out on the lower belt surface at the position corresponding to the lower feeding side 22 of the conveying belt 2.

[0039] The oven 1 in the present embodiment is mainly used for drying the plastic bottle M entering the oven 1. An electric heating element can be arranged inside the oven 1 for heating and drying. Of course, the oven 1 can also be connected to a hot air blower. The hot air blower blows hot air into the oven 1 for drying. The specific structure of such an oven 1 is explained in the prior art, so it will not be elaborated here.

[0040] Combining Figure 1 And Figure 5 As shown, the conveying belt 2 is provided with one or more air pipes 4 for blowing hot air, which are distributed circumferentially along the conveying belt 2. In order to dry multiple plastic bottles M, multiple air pipes 4 are used in this embodiment, as shown in Figure 5 The multiple air pipes 4 are circumferentially distributed along the belt surface of the conveying belt 2 and are fixedly connected with the conveying belt 2, so that the air pipes 4 are moved by the conveying belt 2.

[0041] The air pipes 4 are mainly used for inserting into the plastic bottles M and blowing hot air into the plastic bottles M, so as to directly dry the inside of the plastic bottles M. For details, please refer to Figure 4 The state shown.

[0042] Since the air pipes 4 cannot generate hot air by themselves, a hot air source is needed to supply hot air into the air pipes 4. Since the air pipes 4 are always moving with the conveying belt 2 during work, the traditional structure of the hot air source cannot meet the demand. Therefore, in this embodiment, in order to supply hot air to the air pipes 4, the following improvements are made:

[0043] Combining Figure 4 And Figure 5 As shown, the air box 3 is arranged below the upper belt surface of the conveying belt 2 in the drying oven 1. The air box 3 can be fixed with the drying oven 1. In Figure 4 Only the upper belt surface of the conveying belt 2 is shown.

[0044] The air box 3 has an air cavity 31 inside. The upper wall of the air box 3 is provided with an air outlet 32 extending in the transverse direction and communicating with the air cavity 31. It can also be understood that the air outlet 32 in this embodiment is roughly in the shape of a long strip. The transverse direction in this embodiment can also be understood as the extension direction of the upper belt surface of the conveying belt 2.

[0045] As shown in Figure 4 The bottom wall of the upper belt surface of the conveying belt 2 is attached to the upper wall of the air box 3 and can move with the upper wall of the air box 3, that is, the upper belt surface is in sliding connection with the upper wall of the air box 3. At this time, the upper belt surface of the conveying belt 2 functions as a closure of the air outlet 32, that is, even if the conveying belt 2 is continuously working, a part of the conveying belt 2 will always cover the air outlet 32 to form an obstruction to the air outlet 32.

[0046] The conveying belt 2 is provided with a ventilation hole 23, and the lower end of the air pipe 4 communicates with the ventilation hole 23. The ventilation hole 23 is located in the extension path of the air outlet 32, that is, during the working process of the conveying belt 2, when the ventilation hole 23 moves to the position of the air outlet 32, the ventilation hole 23 is just above the air outlet 32 to communicate with the air outlet 32, as shown in Figure 4 The state shown.

[0047] In addition, the air bellow 3 is also connected with a hot air machine (not shown in the figure), such as Figure 4 The arrow indicates the flow direction of the hot air input by the hot air machine; the air outlet end of the hot air machine is communicated with the air cavity 31 in the air bellow 3, and the hot air is blown into the air cavity 31 by the hot air machine, and then flows upward from the air outlet 32. Thus, when the air vent 23 moves to the position of the air outlet 32, the hot air can be delivered to the air pipe 4 through the air vent 23, and finally sprayed out from the air pipe 4.

[0048] Thus, when the plastic bottle M provided with the conveying belt 2 moves to the position of the air outlet 32, the air pipe 4 can spray hot air to dry the inside of the plastic bottle M; when the air pipe 4 is not in the area of the air outlet 32, the air pipe 4 will not spray hot air, that is, only when the air pipe 4 is in the area of the air outlet 32, the air pipe 4 will spray hot air, and the air pipe 4 in other areas will not spray hot air, so that when loading or unloading, the air pipe 4 in the loading side 21 or the unloading side 22 will not spray hot air, so as to avoid the air pipe 4 spraying hot air to hinder the loading and unloading operation. From another aspect, it also reduces the waste of hot air.

[0049] As shown in Figure 3 , the outer peripheral side of the air pipe 4 is provided with a holding assembly 5 for holding the plastic bottle M, and the holding assembly 5 includes an insertion space for vertically downward insertion of the bottle mouth M1 of the plastic bottle M; during loading, the plastic bottle M is inverted (i.e. the bottle mouth M1 is downward), and the bottle mouth M1 of the plastic bottle M is inserted into the insertion space, and the air pipe 4 is inserted into the plastic bottle M, and the plastic bottle M is held by the holding assembly 5, which can be specifically referred to the state shown in Figure 4 ; so that the conveying belt 2 can drive the plastic bottle M to be conveyed forward in an inverted manner.

[0050] The holding assembly 5 is provided with at least one locking assembly, and the locking assembly includes a reset member and a locking member 61, wherein the locking member 61 is mainly used to form a limit above the convex ring M2 of the plastic bottle M during drying (as shown in Figure 4 ), so as to limit the plastic bottle M from being pushed out upward by the hot air sprayed by the air pipe 4.

[0051] The locking member 61 can be switched between the unlocking position and the locking position relative to the holding assembly 5: wherein the insertion space can be referred to the position shown in N part of Figure 4 , Figure 5 .

[0052] In the unlocking position, the locking member 61 is moved out of the insertion space to avoid the bottle mouth M1 into / out of the insertion space, that is, the locking member 61 does not exist in the insertion space, which can be referred to the state shown in Figure 6 .

[0053] In the locking position, the locking member 61 is in the insertion space, which can be referred toFigure 7 As shown, the locking member 61 at least partially extends into the insertion space and is limited by the convex ring M2 above the convex ring M2 of the bottle mouth M1.

[0054] The reset member is used to provide a reset force to drive the locking member 61 into the unlocking position; that is, when the locking member 61 is not subjected to external force, the locking member 61 will remain in the unlocking position under the action of the reset member, in the unlocked state.

[0055] As shown in Figure 1 and Figure 2 The position between the feeding side 21 and the discharging side 22 is provided with a linkage member 7 capable of forming linkage with the locking member 61, it is worth mentioning that the linkage member 7 only exists between the feeding side 21 and the discharging side 22, and will not extend to the feeding side 21 area and the discharging side 22 area, in other words, the feeding side 21 and the discharging side 22 will not have the linkage member 7. For example, the linkage member 7 can be arranged only in the internal area of the oven 1, of course, the two ends of the linkage member 7 can also extend out from the two sides of the oven 1 for a distance, as shown in Figure 1 of the embodiment.

[0056] As shown in Figure 7 When the linkage member 7 acts on the locking member 61, the locking member 61 overcomes the reset force of the reset member and enters the locking position.

[0057] Therefore, during feeding, since the feeding side 21 does not have the presence of the linkage member 7, at this time the locking member 61 will not be affected by the linkage member 7, so that the locking member 61 is in the unlocking position under the reset force of the reset member, as shown in Figure 6 state, in this way, the locking member 61 will not form a block in the insertion space, so as to ensure that the plastic bottle M can be more easily inverted and inserted into the holding assembly 5, held by the holding assembly 5 and driven forward by the conveying belt 2.

[0058] When the locking member 61 advances with the holding assembly 5 and leaves the feeding side 21, the locking member 61 will enter the area where the linkage member 7 is located, as shown in Figure 7 At this time, the linkage member 7 will act on the locking member 61, so that the locking member 61 overcomes the reset member and enters the locking position; in this way, as shown in Figure 4 and Figure 8As shown, the end of the locking member 61 will extend into the insertion space and above the convex ring M2 on the bottle mouth M1 of the plastic bottle M, so that under the limiting of the locking member 61, the plastic bottle M cannot be pulled out of the supporting assembly 5 upward, at this time, it is equivalent to that the plastic bottle M is locked on the supporting assembly 5, so that after the plastic bottle M enters the oven 1, since the convex ring M2 of the plastic bottle M is limited by the locking member 61, even if the hot air is blown upward by the air pipe 4, the hot air cannot push the plastic bottle M out of the supporting assembly 5, so that the plastic bottle M cannot fall out during the hot air drying process by the air pipe 4.

[0059] When the plastic bottle M is output from the oven 1 to the discharging side 22, since the linkage member 7 does not extend to the discharging side 22, the locking member 61 will be separated from the linkage member 7 after entering the discharging side 22, at this time, the linkage member 7 no longer acts on the locking member 61, at this time, the locking member 61 is recovered to the unlocking position by the restoring force provided by the restoring member, so that the locking member 61 moves away from the upper side of the convex ring M2 and no longer limits and locks the convex ring M2, so that when the plastic bottle M moves to the lower side position of the conveying belt 2 (for example, the position shown by the middle L part) with the conveying belt, the plastic bottle M can automatically fall downward from the supporting assembly 5 under the gravity, without the need for a person or a mechanical hand to take down the plastic bottle M from the supporting assembly 5, which facilitates the discharging. Figure 1

[0060] As can be seen from the above, although the locking assembly is arranged to lock the plastic bottle M to prevent it from being pushed out and falling during the blowing and drying by the air pipe 4, during the feeding and discharging, the locking assembly is in the unlocking state, so that the locking assembly does not interfere with the feeding and discharging, which facilitates the discharging and facilitates the person to insert the plastic bottle M into the supporting assembly 5.

[0061] In the embodiment, as shown in the figure, the locking member 61 is in a plate structure, which is horizontally movably arranged relative to the supporting assembly 5, and includes a locking end and a linkage end, that is, one end of the locking member 61 constitutes the locking end, and the opposite end constitutes the linkage end; the locking end is used for being inserted into the insertion space and limiting the convex ring M2 above the convex ring M2; the linkage end is used for contacting and linking with the linkage member 7. Figure 3 In order to enable the linkage member 7 to link with the locking member 61, as shown in the figure, in the embodiment, the linkage member 7 is in a strip structure, and at least part of it is located in the oven 1 and above the upper belt surface of the conveying belt 2 and extends transversely.

[0062] Figure 2 As shown in the figure, the linkage member 7 is in a strip structure, and at least part of it is located in the oven 1 and above the upper belt surface of the conveying belt 2 and extends transversely.

[0063] As shown in the figure, the linkage member 7 is in a strip structure, and at least part of it is located in the oven 1 and above the upper belt surface of the conveying belt 2 and extends transversely. Figure 2 ​​As shown, the linkage member 7 comprises a first guide surface 71 and a second guide surface 72, the first guide surface 71 faces the air pipe 4; the first guide surface 71 extends transversely for abutting with the linkage end; when the linkage end contacts the first guide surface 71, as Figure 4 and Figure 7 As shown, under the push of the first guide surface 71, the locking end enters the locking position; as Figure 2 As shown, the second guide surface 72 is connected with one end of the first guide surface 71 close to the feeding side 21, and the second guide surface 72 extends outwardly relative to the first guide surface 71.

[0064] The second guide surface 72 functions to gradually guide the linkage end of the locking member 61 to move onto the first guide surface 71, that is, after the plastic bottle M is fed on the feeding side 21, it is driven forward by the conveying belt 2; when the linkage end of the locking member 61 enters the area where the second guide surface 72 is located, with the forward movement of the conveying belt 2, the linkage end will contact the second guide surface 72; since the second guide surface 72 is outwardly inclined, the second guide surface 72 will gradually press the linkage end during the forward movement of the linkage end abutting against the second guide surface 72, so that the locking end of the locking member 61 continuously extends into the insertion space; when the linkage end continues to move to the first guide surface 71, at this time, the locking end completely enters the locking position, forming a locking state; thus, the subsequent linkage end will continue to move forward with the conveying belt 2 abutting against the first guide surface 71 in the current state, that is, as long as the linkage end is on the first guide surface 71, the locking member is in the locking position.

[0065] The locking member continues to move forward to the first guide surface 71 of the linkage member 7 and enters the discharging side 22; at this time, without the pressing of the first guide surface 71, the locking member starts to reset under the action of the resetting member, and finally the locking end relies on the above of the convex ring M2; thus, the subsequent plastic bottle M is in the position below the discharging side 22 (i.e. in the lower belt surface position of the conveying belt 2 of the discharging side 22); at this time, the plastic bottle M is in the state that the bottle mouth M1 faces upward, so that the holding assembly 5 no longer plays a holding role on the plastic bottle M, and thus the plastic bottle M can automatically fall down under the gravity.

[0066] Since the linkage end needs to abut against the first guide surface 71 or the second guide surface 72 to move forward, in order to reduce the friction between the linkage end and the first guide surface 71 or the second guide surface 72, in the embodiment, as Figure 3 and Figure 6 As shown, the linkage end comprises a roller 611, the roller 611 is rotationally arranged at the outer end of the locking member 61 to form the linkage end.

[0067] Since the bottle mouth M1 is generally cylindrical, in order to enable the locking end to adapt to the outer profile of the bottle mouth M1, in the embodiment, the locking end comprises an arc-shaped recessed socket 612, that is, the arc-shaped recessed socket 612 is formed at the inner end of the locking member 61 to constitute the aforementioned locking end; the arc shape of the arc-shaped recessed socket 612 basically adapts to the outer profile of the bottle mouth M1, asFigure 8 As shown.

[0068] In this embodiment, as Figures 1-3 As shown, the conveyor belt 2 has two guide rails 9 at both ends. The guide rails 9 are in the same winding direction as the conveyor belt 2. It can also be understood that the trajectory of the guide rails 9 corresponds to the conveying trajectory of the conveyor belt 2, forming a closed loop structure.

[0069] A slider 91 is slidably mounted on the guide rail 9, and a mounting base 92 is fixedly connected between two sliders 91 on two guide rails 9 at the same position. The air duct 4 passes through the mounting base 92, and the air duct 4 can be fixedly connected to the mounting base 92. In addition, in order to enable the conveyor belt 2 to drive the mounting base 92 to move on the guide rail 9, a connecting rod 921 can be provided between the conveyor belt 2 and the mounting base 92. The locking component and the supporting component 5 are both mounted on the mounting base 92, and one mounting base 92 corresponds to one air duct 4.

[0070] During the conveyor belt 2's conveying process, the mounting base 92 can be pulled to move synchronously, thereby causing the slider 91 to slide together on the guide rail 9. Thus, as the conveyor belt 2 conveys one revolution, the slider 91 slides synchronously on the guide rail 9 one revolution.

[0071] Combination Figure 3 and Figure 4 As shown, the reset component includes a support 624, a guide rod 621, and a spring 622. The support 624 is relatively fixed to the support assembly 5. Specifically, the lower end of the support 624 is fixed to the mounting base 92.

[0072] The locking member 61 is slidably disposed on the support 624 along the longitudinal direction; in this embodiment, the longitudinal direction can be understood as the direction that is horizontal and perpendicular to the transverse direction, or it can be understood as the width direction of the conveyor belt 2.

[0073] The guide rod 621 is movably mounted on the support 624 along the longitudinal direction. One end of the guide rod 621 is fixed to the locking member 61, and the other end is provided with a stop block 623. The spring 622 is sleeved on the part of the guide rod 621 located between the stop block 623 and the support 624. One end of the spring 622 abuts against the stop block 623, and the other end abuts against the support 624. The spring 622 provides elastic force to push the guide rod 621 to move along the longitudinal direction away from the support component 5, thereby pulling the locking member 61 to the unlock position.

[0074] When the roller 611 of the locking member 61 contacts the first guide surface 71 or the second guide surface 72 and moves forward, the first guide surface 71 or the second guide surface 72 pushes the locking member 61 to continuously insert into the insertion space. During this process, the locking member 61 will overcome the elastic force of the spring 622 and drive the guide rod 621 to move closer to the support assembly 5. Finally, the locking member 61 enters the locked position.

[0075] In order to enable the locking member 61 to be kept in the unlocked position, in the embodiment, the end of the guide rod 621 connected with the locking member 61 forms a bent portion 6211, and in the unlocked position, the bent portion 6211 abuts against the support 624 to enable the locking member to be kept in the unlocked position. Specifically, the upper end of the support 624 extends to a side close to the holding assembly 5 to form an extension portion, and in the unlocked position, under the elastic force of the spring 622, the bent portion 6211 abuts against the end side of the extension portion to enable the locking member 61 to be kept in the unlocked position.

[0076] In the embodiment, as shown in Figure 3 , the holding assembly 5 comprises a holding portion 51 and a straight pipe portion 52. The holding portion 51 is in the shape of a conical structure with a wide upper end and a narrow lower end, which is mainly used to adapt to the arc-shaped outer periphery of the plastic bottle M close to the bottle mouth M1.

[0077] The straight pipe portion 52 is connected to the lower end of the holding portion 51 and is mainly used for the bottle mouth M1 of the plastic bottle M to be inserted into it. When loading, the plastic bottle M is inverted, and as shown in Figure 4 , the arc-shaped outer periphery of the plastic bottle M close to the bottle mouth M1 is inserted into the holding portion 51 and held by the holding portion 51, and the bottle mouth M1 is inserted into the straight pipe portion 52. In this way, the plastic bottle M is kept in an upright state on the holding portion 51.

[0078] As shown in Figure 3 , two cutouts 53 are respectively formed on the two sides of the holding assembly 5 in the transverse direction, and the cutouts 53 radially penetrate the holding portion 51 and the straight pipe portion 52 to form two single bodies of the holding assembly 5 arranged in symmetry in the longitudinal direction, and the area between the two single bodies constitutes the aforementioned insertion space. The purpose of setting the cutouts is to reduce the shielding of the holding assembly 5 to the plastic bottle M, so that part of the plastic bottle M can be exposed at the position of the cutouts to be dried. Conversely, if the cutouts are not set and the holding assembly 5 is complete, the lower side of the plastic bottle M (i.e., the bottle mouth M1 and the position close to the bottle mouth M1) will be completely shielded by the holding portion 51 and the straight pipe portion 52, so that the hot air in the oven 1 cannot directly act on these shielding positions. Therefore, the cutouts are set to minimize the shielding of the holding portion 51 and the straight pipe portion 52 to the lower side of the plastic bottle M.

[0079] In the embodiment, two locking assemblies are preferably set, i.e., one locking assembly is arranged on the outer side of each single body of the holding assembly 5, and the locking member 61 in the locking assembly is movably arranged at the top position of the straight pipe portion 52.

[0080] In this way, when both locking members 61 enter the locked position, as shown in Figure 8 , the two arc-shaped notches 612 of the two locking members 61 jointly constitute an incomplete clasp to be sleeved on the outer periphery of the bottle mouth M1. It is worth noting that in the locked position, as shown inFigure 8 As shown, the bottle mouth M1 is clearance fitted between the two arc-shaped notches 612, i.e. the two arc-shaped notches 612 do not lock the bottle mouth M1.

[0081] Although the cutout 53 is provided, the plastic bottle M is still partially blocked by the holding part 51 and the straight tube part 52. Therefore, the following improvement is made in the embodiment:

[0082] In combination with Figure 2 and Figure 4 As shown, a transversely extending friction strip 8, such as a rubber strip, is arranged above the linkage member 7 in the oven 1, and is used to contact the outer peripheral wall of the plastic bottle M to drive the plastic bottle M to rotate. Thus, when the plastic bottle M enters the oven 1 after being installed on the holding assembly 5, the locking member 61 is in the locking position, i.e. the two arc-shaped notches 612 are positioned above the convex ring M2 to limit the upward movement of the convex ring M2, and the bottle mouth M1 is arranged between the two arc-shaped notches 612. Thus, when the plastic bottle M advances in the oven 1, the outer peripheral wall of the plastic bottle M will contact the friction strip 8 when the plastic bottle M reaches the position of the friction strip 8. As the plastic bottle M continues to advance, the plastic bottle M will rotate on the holding assembly 5 under the friction of the friction strip 8. Thus, the lower side of the plastic bottle M will alternately enter the cutout 53 region, so that the blocked part of the lower side of the plastic bottle M is always changing, rather than a certain area being always blocked. In other words, the lower side of the plastic bottle M has the opportunity to be exposed at the cutout to contact the hot air in the oven 1 for drying.

[0083] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but rather can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A plastic bottle drying device, wherein the plastic bottle has a raised ring on the outer periphery of its nozzle, the drying device includes an oven and a conveyor belt, the conveyor belt at least partially passes horizontally through the oven and forms a feeding side and a discharging side on both sides of the oven, and the conveyor belt is provided with one or more air ducts for blowing hot air distributed circumferentially along the conveyor belt, characterized in that, The outer periphery of the air duct is provided with a support assembly for holding plastic bottles. The support assembly includes an insertion space for vertically downward insertion of the bottle nozzle. The support assembly is provided with at least one locking assembly, which includes a reset member and a locking member. The locking member can switch between an unlocked position and a locked position relative to the support assembly. In the unlocked position, the locking member moves out of the insertion space to avoid the bottle nozzle entering / exiting the insertion space. In the locked position, the locking member extends at least partially into the insertion space and limits the protrusion above the protrusion of the bottle nozzle. The reset member is used to provide a reset force to drive the locking member into the unlocked position. A linkage member is provided between the feeding side and the unloading side, which can be linked with the locking member. When the linkage member acts on the locking member, the locking member overcomes the reset force of the reset member and enters the locked position. The holding assembly includes a holding part and a straight tube part. The holding part is a bucket-shaped structure that is wider at the top and narrower at the bottom. The straight tube part is connected to the lower end of the holding part. The holding assembly has slits on both sides in the horizontal direction. The slits penetrate the holding part and the straight tube part so that the holding assembly forms two units that are symmetrically arranged in the vertical direction. The locking member is located at the straight tube part. A portion of the plastic bottle is exposed at the slits. The oven is equipped with a horizontally extending friction strip located above the linkage component. The friction strip is used to contact the outer peripheral wall of the plastic bottle to drive the plastic bottle to rotate, so that the lower part of the plastic bottle alternately enters the cutting area. The locking member is horizontally movable relative to the supporting assembly. The locking member includes a locking end and a linkage end. The locking end is used to limit the movement of the convex ring. The linkage end is used to contact and link with the linkage component. The linkage component is at least partially located inside the oven and extends laterally above the conveyor belt. The linkage component includes a first guide surface and a second guide surface. The first guide surface extends laterally to abut against the linkage end. When the linkage end contacts the first guide surface, the locking end enters the locking position under the pushing of the first guide surface. The second guide surface is connected to the end of the first guide surface near the feeding side, and the second guide surface extends outward at an incline relative to the first guide surface.

2. The plastic bottle drying device according to claim 1, characterized in that, The linkage end includes a roller, and / or the locking end includes a concave arc-shaped bayonet.

3. The plastic bottle drying device according to claim 1, characterized in that, The reset component includes a support, a guide rod, and a spring. The support is relatively fixed to the holding assembly. The locking component is slidably disposed on the support along the longitudinal direction. The guide rod is movably disposed on the support along the longitudinal direction. One end of the guide rod is fixed to the locking component, and the other end is provided with a stop. The spring is sleeved on the part of the guide rod located between the stop and the support, with one end of the spring abutting against the stop and the other end abutting against the support.

4. A plastic bottle drying device according to claim 3, characterized in that, The end of the guide rod connected to the locking member forms a bend. In the unlocked position, the bend abuts against the support to keep the locking end in the unlocked position.

5. A plastic bottle drying device according to claim 1, characterized in that, The oven is equipped with a blower box located below the upper surface of the conveyor belt. The blower box has an air cavity inside, and the upper wall of the blower box has an air outlet that extends laterally and communicates with the air cavity. The upper surface of the conveyor belt is attached to the upper wall of the blower box. The conveyor belt has ventilation holes, and the lower end of the air duct communicates with the ventilation holes. The ventilation holes are located in the extension path of the air outlet.

6. A plastic bottle drying device according to claim 1, characterized in that, The conveyor belt has two guide rails at both ends, and the guide rails are in the same winding direction as the conveyor belt. A slider is slidably mounted on the guide rail, and a mounting base is fixedly connected to the slider. The air duct passes through the mounting base. The locking component and the supporting component are both mounted on the mounting base.

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