Vending machine

Abstract

An automatic vending machine belongs to the technical field of automatic vending machines and comprises a commodity bearing table, a commodity taking area, a slow descending supporting plate, a slow descending mechanism and a speed reducing mechanism, and the commodity bearing table is used for placing and locking commodities; the goods taking area is located below the goods bearing table for users to take goods; the slow descending supporting plate is used for supporting the purchased commodities released from the commodity bearing table; the slow descending mechanism is used for supporting the slow descending supporting plate; the speed reducing mechanism is connected with the slow descending mechanism; after a user selects and purchases commodities, the commodity bearing table releases the selected and purchased commodities, the commodities fall onto the slow descending supporting plate and descend under the action of the gravity of the commodities and the support of the slow descending supporting plate and the slow descending mechanism, and the speed reducing mechanism reduces the descending speed and acceleration of the commodities and the slow descending supporting plate so as to reduce the impact force between the commodities and the commodity taking area. And goods are prevented from being damaged or carbonic acid beverages are prevented from overflowing after the cover is opened due to large impact. The automatic vending machine is used for automatic vending.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic vending machines, and in particular to an automatic vending machine. Background Art

[0002] A vending machine is a machine that can automatically pay for goods according to the coins paid. After the consumer specifies the goods and pays the coins, the goods carrier of the vending machine will release the selected goods, and the goods will fall to the pickup area in a free fall manner. The user can take the goods after pushing open the pickup door at the pickup port. When the goods fall to the pickup area, they will be hit to a certain extent, which may affect the use of the goods, especially the beverages with heavy weight. In particular, bottled carbonated beverages have a large gravity, and the gravity acceleration and terminal speed during the falling process are relatively large. The impact force after reaching the pickup area is large, and the CO2 in the beverage is discharged from the liquid, causing the air pressure in the bottle to increase. After the beverage is opened, the beverage and the gas will overflow from the bottle mouth and get on the consumer's body or hands, affecting the consumer's experience. If the goods are fragile items, they are easily damaged after falling and impacting, affecting the sale of the goods. Summary of the invention

[0003] In view of this, the present invention provides an automatic vending machine, which can reduce the impact force of the purchased goods hitting the pickup area.

[0004] To achieve the above objectives, the present invention provides the following technical solutions.

[0005] 1. Vending machines, including: The commodity loading platform is used to place and lock the commodities; The pickup area is located below the product loading platform for users to pick up goods; After the user selects the goods, the goods carrying platform releases the selected goods, and the goods fall into the pickup area for the user to pick up; It is characterized by further comprising: The slow-drop pallet is used to support the purchased goods released from the goods carrying platform; A slow-down mechanism, used for supporting a slow-down support plate; A deceleration mechanism connected to the slow-descent mechanism; After the commodity carrying platform releases the commodity, the commodity falls onto the slow-descent pallet. The commodity descends under the action of its own gravity and the support of the slow-descent pallet and the slow-descent mechanism. The deceleration mechanism reduces the descending speed and acceleration of the commodity and the slow-descent pallet to reduce the impact force between the commodity and the pickup area.

[0006] The slow-down pallet and the slow-down mechanism are used to support the goods falling from the goods carrying platform, and the deceleration mechanism is used to provide damping for the slow-down mechanism. Due to the damping effect of the deceleration mechanism, part of the gravity of the goods is offset, so the deceleration mechanism can reduce the speed and acceleration of the goods and the slow-down pallet to reduce the impact speed of the goods and the slow-down pallet when they are lowered to the pickup area, thereby reducing the impact force between the goods and the pickup area, avoiding damage to the goods or carbonated beverages being greatly impacted and overflowing after opening the lid. At the same time, the descent of the goods is achieved by using their own weight, reducing the setting of additional power sources.

[0007] 2. Based on technical solution 1, the speed reduction mechanism includes: A gear pump is connected to the slow-down mechanism, and the gear pump is provided with an air inlet and an air outlet; An air outlet pipe is connected to the air outlet of the gear pump and is provided with a speed limiting port; When the slow-descent mechanism supports the slow-descent pallet to descend, the gear pump is driven to extract air from the air inlet, and the gas is discharged from the speed limiting port, so that the exhaust speed through the speed limiting port reduces the speed and acceleration of the descent of the goods and the slow-descent pallet.

[0008] 3. On the basis of technical solution 2, the deceleration mechanism also includes an accelerating elastic airbag, which is connected to the air outlet pipe to reduce the time consumed in the entire descent of the slow-descent pallet.

[0009] 4. Based on technical solution 1, the commodity carrying platform is provided with a commodity releasing mechanism, which includes: A placement slot, arranged along the front-to-back direction, for placing goods; The spiral rod is arranged in the placement groove and is spiral-shaped, so that the placement groove forms a plurality of compartments along the front-back direction, and each compartment is used to place a commodity; Release the driving assembly, used to drive the screw rod to rotate; A lever, arranged at the end of the spiral rod; After the user selects the goods, the drive assembly is released to drive the spiral rod to rotate 360 ​​degrees. The spiral rod pushes the goods in each compartment forward one unit position, and the goods in the front compartment are released. The lever moves the bottom of the released goods as the spiral rod rotates to place them horizontally on the slow-descent pallet.

[0010] 5. Based on technical solution 4, the lever includes: There are two limit blocks, which are arranged on the spiral rod opposite to each other, and a non-limiting opening is formed on both sides between the two limit blocks; The pull tube is elastically connected to the spiral rod and rotates with the spiral rod; A limiting piece, one end of which is arranged between the two limiting blocks; The gravity block is movably installed in the dial tube and connected to the other end of the limit plate to always keep the limit plate horizontal during the rotation of the dial tube and the limit block; The spiral rod rotates and pushes the product forward, and the limit block rotates with the spiral rod. When the non-limiting opening is aligned with the limit piece, the push tube is squeezed by the product and drives the limit piece to swing toward the non-limiting opening to avoid the push tube and the placement slot from jamming the product.

[0011] 6. Based on technical solution 1, Each commodity carrying platform is provided with a pallet temporary storage slide rail, and temporarily stores at least one slow-drop pallet for supporting the purchased commodities; The pickup area is provided with a pickup baffle and a positioning chute equipped with at least one slow-down pallet; The descending mechanism includes: A set of slow-descent conveyor belts, arranged in front of the commodity carrying platform, for supporting the slow-descent pallet that moves to the front of the commodity carrying platform, and the slow-descent conveyor belts are provided with a plurality of slow-descent mounting positions for assembling the slow-descent pallet; A set of lifting conveyor belts is arranged behind the commodity loading platform and is used to support the slow-descent pallet moved to the rear of the commodity loading platform. The lifting conveyor belt is provided with a plurality of lifting installation positions for assembling the slow-descent pallet. When the lifting conveyor belt is stationary, the lowest lifting installation position is a balancing installation position, which is equipped with a slow-descent pallet to balance the slow-descent pallet moved to the slow-descent installation position. A synchronous transmission assembly connects the slow-down conveyor belt and the lifting conveyor belt, so as to drive the slow-down pallet of the lifting conveyor belt supporting the balancing installation position to move upward synchronously when the slow-down conveyor belt supports the slow-down pallet to move downward; When the commodity carrying platform releases the selected commodity, the temporary storage slide rail is triggered to release the slow-descent pallet, and the released slow-descent pallet moves and is assembled to the slow-descent installation position of the slow-descent conveyor belt, and the commodity falls from the commodity carrying platform onto the slow-descent pallet, and relies on its own gravity to drive the slow-descent pallet to descend, and the lifting conveyor belt drives the slow-descent pallet at the balancing installation position to rise synchronously, and when the slow-descent pallet supporting the commodity descends to the pickup area, the lifting conveyor belt drives the slow-descent pallet at the balancing installation position to rise to the above-mentioned commodity carrying platform and align with the pallet temporary storage slide rail of the commodity carrying platform, and the slow-descent pallet slides into the pallet temporary storage slide rail of the commodity carrying platform for temporary storage, and the user pushes open the pickup baffle to take away the commodity, and the pickup baffle pushes the slow-descent pallet supporting the commodity to move to the positioning slide slot, and at the same time, the slow-descent pallet at the positioning slide slot is pushed to the balancing installation position of the lifting conveyor belt to balance the next slow-descent pallet assembled to the slow-descent installation position.

[0012] 7. Based on technical solution 6, the commodity carrying platform is provided with a pallet release mechanism and a release drive assembly, and the pallet release mechanism includes: An eccentric block connected to a release drive assembly; A shift block, arranged on one side of the eccentric block; The power cylinder is provided with a power piston rod, and the shift block is installed on the power piston rod; The unlocking cylinder is installed under the commodity carrying platform and connected to the power cylinder. The unlocking cylinder is provided with an unlocking piston rod and a return spring. The unlocking piston rod locks the slow-down pallet at the front of the pallet temporary storage slide rail; When the commodity carrier releases the selected commodity, the release drive assembly drives the eccentric block to rotate, the eccentric block drives the shifting block to move, the power piston rod squeezes the gas into the unlocking cylinder, the unlocking piston rod moves up and disengages from the above-mentioned slow-descent pallet, so that the slow-descent pallet is moved out from the pallet temporary storage slide rail; the return spring squeezes the unlocking piston rod downward, so that the unlocking piston rod locks the next slow-descent pallet in the pallet temporary storage slide rail and does not move. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the automatic vending machine of the present invention.

[0014] Figure 2 The figure is a schematic diagram of the internal structure of the vending machine of the present invention after the housing is removed.

[0015] Figure 3 The internal structure of the vending machine of the present invention after removing the housing is schematically shown. Figure 2 .

[0016] Figure 4 It is a schematic diagram of the state of the slow-descent pallet being moved from the pallet temporary storage slide rail to the slow-descent installation position.

[0017] Figure 5 It is a schematic diagram of the state in which the slow-descent pallet on the slow-descent installation position is lifted to the commodity carrying platform where a vacant space is formed on the pallet temporary storage rail when the slow-descent pallet on the slow-descent installation position is lowered to the pickup area.

[0018] Figure 6 This is a schematic diagram of the state where the slow-descent pallet on the balancing installation position moves to the pallet temporary storage rail.

[0019] Figure 7 for Figure 6 A partial enlarged view of point A in the middle.

[0020] Figure 8 It is a cross-sectional view of the speed reduction mechanism.

[0021] Fig. 9 It is a cross-sectional view of the automatic vending machine of the present invention after removing the commodity support platform.

[0022] Fig.10 A schematic diagram of a commodity carrying platform carrying and locking commodities.

[0023] Reference numerals include: Commodity carrying platform 1, pallet releasing mechanism 11, power cylinder 111, power piston rod 1111, return spring 1112, unlocking cylinder 112, unlocking piston rod 1121, eccentric block 113, shifting block 114, pallet temporary storage slide rail 12, commodity releasing mechanism 13, placement slot 131, screw rod 132, release drive assembly 133, shifting rod 134, limit block 1341, non-limiting opening 13411, shifting tube 1342, limit plate 1343, connecting spring 1344, gravity block 1345; Pick-up area 2, pick-up baffle 21, extrusion support foot 211, positioning slide 22, support plate locking assembly 23, wedge-shaped locking block 231, return spring 232; Slow-down support plate 3, slow-down mechanism 4, slow-down conveyor belt 41, slow-down installation position 411, lifting conveyor belt 42, lifting installation position 421, synchronous transmission assembly 43, driving gear shaft 431, driven gear shaft 432, synchronous conveyor belt 433, synchronous gear shaft 434; Speed ​​reduction mechanism 5, gear pump 51, air inlet 511, air outlet 512, air outlet pipe 52, speed limit port 521, nut 53, acceleration elastic airbag 54, and one-way valve 55.

[0024] Shell 6. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with specific embodiments.

[0026] See also Figures 1 to 5 The vending machine of this embodiment includes a commodity loading platform 1 and a pickup area 2. There are multiple commodity loading platforms 1, which are arranged vertically. The commodity loading platforms 1 are used to place and lock commodities. The pickup area 2 is located below the commodity loading platforms 1 at the bottom layer. The commodities selected by the user fall into the pickup area 2 for the user to pick up. Figures 2 to 6As shown, the vending machine of this embodiment also includes a slow-descent pallet 3, a slow-descent mechanism 4 and a speed reduction mechanism 5. The slow-descent pallet 3 is used to support the selected goods released from the goods carrying platform 1. The slow-descent mechanism 4 is used to support the slow-descent pallet 3 and the goods on the slow-descent pallet 3 to move slowly downward. The speed reduction mechanism 5 is connected to the slow-descent mechanism 4 to provide resistance for the slow-descent mechanism 4 to reduce the speed and acceleration of the slow-descent pallet 3 and the goods supported by it, thereby reducing the impact force when the goods arrive at the pickup area 2. After the user selects the goods, the goods carrying platform 1 releases the selected goods, and the goods fall onto the slow-down pallet 3. The goods descend under the action of their own gravity and the support of the slow-down pallet 3 and the slow-down mechanism 4. Due to the resistance provided by the deceleration mechanism 5, part of the gravity of the goods is offset, so the deceleration mechanism 5 can reduce the speed and acceleration of the goods and the slow-down pallet 3 to reduce the impact speed when the goods and the slow-down pallet 3 descend to the pickup area 2, thereby reducing the impact force between the goods and the pickup area 2, avoiding damage to the goods or carbonated beverages being greatly impacted and overflowing after opening the lid. At the same time, the descent of the goods is achieved by using their own weight, reducing the setting of additional power sources.

[0027] Since the power for the slow-down mechanism 4 to support the goods and the slow-down support plate 3 to descend comes from the weight of the goods themselves, that is, the slow-down mechanism 4 does not have an active power output, and the product carrying platform 1 of the vending machine is generally arranged in multiple layers, when selecting goods at different levels, the slow-down mechanism 4 cannot support the slow-down support plate 3 to move to different levels to support the goods. Figure 2 , Figure 3 and Fig. 9As shown, each commodity loading platform 1 of the present embodiment is provided with a pallet releasing mechanism 11, and a downward inclined pallet temporary storage rail 12 is provided below the commodity loading platform 1, and the temporary storage rail 12 is arranged on the shell 6. When the shell 6 is hidden in the accompanying drawings, the temporary storage rail 12 is also hidden at the same time. The pallet temporary storage rail 12 temporarily stores three slow-descent pallets 3 for supporting the selected commodities. When the commodity loading platform 1 releases the commodity, the pallet releasing mechanism 11 is triggered. The pallet releasing mechanism 11 releases the slow-descent pallet 3 at the front of the pallet temporary storage rail 12. When the front slow-descent pallet 3 moves to the front of the commodity loading platform 1, the pallet releasing mechanism 11 locks the positions of the remaining slow-descent pallets 3, so that the remaining slow-descent pallets 3 are still under the commodity loading platform 1 to support the next commodity to be purchased. The slow-descent mechanism 4 is in the form of a conveyor belt with continuous transmission and reciprocating functions, specifically including two slow-descent conveyor belts 41. The two slow-descent conveyor belts 41 are arranged side by side in front of the commodity loading platform 1 and on the left and right sides of the pickup area 2. A plurality of slow-descent installation positions 411 are circumferentially arranged on each slow-descent conveyor belt 41. The distance between two adjacent slow-descent installation positions 411 is equal to the distance between two adjacent commodity loading platforms 1. The slow-descent installation positions 411 on the two slow-descent conveyor belts 41 correspond one to one, and the corresponding two slow-descent installation positions 411 are a group. When the slow-descent conveyor belt 41 is in a stationary state, the slow-descent installation position 411 is aligned with the pallet temporary storage slide rail 12 under the commodity loading platform 1 to form a continuous slide rail. When the slow-descent pallet 3 is moved out from the pallet temporary storage slide rail 12, it can be directly moved and assembled to the slow-descent installation position 411 and supported by the slow-descent conveyor belt 41. When the slow-down conveyor belt 41 supports the slow-down pallet 3 and the goods move downward under the gravity of the goods, the slow-down conveyor belt 41 rotates and drives the slow-down installation position 411 thereon to move back and forth, ensuring that when the slow-down pallet 3 supporting the goods descends to the pickup area 2, the remaining slow-down installation positions 411 on the slow-down conveyor belt 41 can be aligned with the pallet temporary storage slide rail 12 under the goods carrying platform 1 again to ensure that the next goods can be supported smoothly. The design of the slow-down conveyor belt 41 makes it possible for the slow-down mechanism 4 to directly carry out the next support without having to move to the target position according to the position of the goods to be purchased next time, thereby reducing the complexity of the slow-down mechanism 4.

[0028] like Figure 2 and Figure 3As shown, the pallet release mechanism 11 of this embodiment includes a power cylinder 111, an unlocking cylinder 112, a plurality of eccentric blocks 113 and a plurality of shifting blocks 114. The power cylinder 111 is installed at the rear side of the commodity carrying platform 1. The power cylinder 111 is provided with a power piston rod 1111 and a return spring 1112. The power piston rod 1111 extends to the left and right directions of the commodity carrying platform 1. The plurality of shifting blocks 114 are installed on the power piston rod 1111. The plurality of eccentric blocks 113 correspond to the plurality of shifting blocks 114 one by one, and each eccentric block 113 is connected to a release drive assembly 133. The unlocking cylinder 112 is installed below the commodity carrying platform 1 and close to the front end. The unlocking cylinder 112 is connected to the power cylinder 111. The unlocking cylinder 112 is provided with an unlocking piston rod 1121 and a return spring. The unlocking piston rod 1121 locks the slow-down pallet 3 at the front of the pallet temporary storage slide rail 12. When the commodity carrier 1 releases the selected commodity, the release drive assembly 133 simultaneously drives the eccentric block 113 to rotate, the eccentric block 113 drives the shift block 114 to move, the shift block 114 squeezes the power piston rod 1111, the power piston rod 1111 squeezes the return spring 1112 to compress, and at the same time squeezes the gas into the unlocking cylinder 112, the unlocking piston rod 1121 moves up and disengages from the slow-descent pallet 3 at the front, so that the slow-descent pallet 3 relies on its own gravity to move out from the pallet temporary storage slide rail 12. When the eccentric block 113 is separated from the shift block 114 but has not rotated 360°, the power piston rod 1111 drives the shift block 114 to reset under the rebound force of the return spring 1112, and the slow-descent pallet 3 is moved and assembled to the slow-descent mounting position 411, and the return spring squeezes the unlocking piston rod 1121 to move downward, so that the unlocking piston rod 1121 locks the next slow-descent pallet 3 in the pallet temporary storage slide rail 12 and does not move. The goods will be released only after the release drive assembly 133 drives the spiral rod 132 to rotate 360°, and the slow-descent pallet 3 at the pallet temporary storage slide rail 12 has moved into place before the spiral rod 132 / eccentric block 113 rotates 360°. Therefore, the slow-descent pallet 3 is in place in advance before the purchased goods fall onto the slow-descent pallet 3, thereby ensuring that the slow-descent pallet 3 can serve its supporting purpose.

[0029] When the slow-descent pallet 3 under the commodity loading platform 1 is moved and assembled to the slow-descent mounting position 411 of the slow-descent conveyor belt 41, it will move downward due to its own gravity, resulting in the failure to achieve the supporting purpose. At the same time, the slow-descent pallet 3 at the pallet temporary storage slide rail 12 under the commodity loading platform 1 will be vacant after being moved out. After all the slow-descent pallets 3 under each layer of commodity loading platform 1 are used, it will be unable to support the remaining commodities to slow down and descend to the pickup area 2. Therefore, the slow-descent mechanism 4 of this embodiment also includes two lifting conveyor belts 42 and a synchronous transmission assembly 43. At the same time, a pickup baffle 21, an obliquely arranged positioning slide 22 and a pallet locking assembly 23 are provided in the pickup area 2. Figure 2 , Figure 3 and Fig. 9As shown, two lifting conveyor belts 42 are arranged side by side behind the commodity loading platform 1 and on the left and right sides of the pickup area 2. A plurality of lifting installation positions 421 are arranged circumferentially on each lifting conveyor belt 42. The distance between two adjacent lifting installation positions 421 is equal to the distance between two adjacent commodity loading platforms 1. The lifting installation positions 421 on the two lifting conveyor belts 42 correspond to each other one by one, and the corresponding two lifting installation positions 421 form a group. When the lifting conveyor belt 42 is stationary, the group of lifting installation positions 421 at the bottom is a balancing installation position, which is equipped with a slow-down support plate 3 to balance the slow-down support plate 3 assembled to the slow-down installation position 411. The slow-descent mounting position 411 and the slow-descent pallet 3 on the balancing mounting position are similar to two weights of equal mass supported by a fixed pulley, and the slow-descent conveyor belt 41 and the lifting conveyor belt 42 are similar to ropes connecting the two weights. In the absence of external forces, the two weights can remain balanced and motionless at any position. Therefore, the slow-descent pallet 3 on the balancing mounting position can balance the slow-descent pallet 3 moved out from under any commodity carrier 1 to keep its position immobile, thereby ensuring the slow-descent pallet 3 moved out from the pallet temporary storage slide rail 12 to support the commodity. The synchronous transmission component 43 connects the slow-descent conveyor belt 41 and the lifting conveyor belt 42, so that when the slow-descent conveyor belt 41 supports the slow-descent pallet 3 to move downward, the lifting conveyor belt 42 is driven to support the slow-descent pallet 3 at the balancing mounting position to move upward synchronously. Figure 4 , Figure 5 and Figure 6 As shown, three slow-down pallets 3 are installed at the positioning chute 22 of the pickup area 2 and locked by the pallet locking assembly 23. The positioning chute 22 is arranged opposite to the leveling installation position to form a continuous slide rail. When the embodiment is in use, after the goods on a certain layer of the commodity loading platform 1 are selected, the commodity loading platform 1 of this layer releases the selected goods, and at the same time triggers the pallet release mechanism 11 to release the slow-down pallet 3. Before the goods fall into place, the released slow-down pallet 3 moves to the slow-down installation position 411 of the slow-down conveyor belt 41 and is supported, as shown in FIG. Figure 4 As shown, after the pallet temporary storage slide 12 releases the slow-descent pallet 3 on the front side, the remaining slow-descent pallets 3 move forward and are locked by the pallet release mechanism 11, so that there is a vacancy on the rear side of the pallet temporary storage slide 12. The purchased goods fall from the commodity carrying platform 1 to the slow-descent pallet 3 assembled to the slow-descent installation position 411, and rely on their own gravity to drive the slow-descent pallet 3 to descend, and the slow-descent pallet 3 drives the slow-descent conveyor belt 41 to rotate, and through the synchronous transmission component 43, the lifting conveyor belt 42 drives the slow-descent pallet 3 at the balancing installation position to rise synchronously. When the slow-descent pallet 3 carrying the goods descends to the pickup area 2, the lifting conveyor belt 42 drives the slow-descent pallet 3 at the balancing installation position to rise to the above-mentioned commodity carrying platform 1 and align with the pallet temporary storage slide 12 of the commodity carrying platform 1, as shown in FIG. Figure 5As shown, the state of the two slow-descent pallets 3 at the balancing installation position and the slow-descent installation position 411, the slow-descent pallet 3 at the balancing installation position slides into the pallet temporary storage rail 12 of the commodity loading platform 1 by gravity to fill the vacancy a generated under the commodity loading platform 1, as shown in FIG. Figure 6 The status shown is due to Figure 5 , Figure 6 The housing 6 is hidden, so the temporary storage rail 12 is also hidden, which can be combined with Fig. 9 Come and see. Figure 2 As shown, two squeeze legs 211 are provided on the lower side of the pickup baffle 21. After the slow-descent pallet 3 supporting the goods descends to the pickup area 2, when the user pushes the pickup baffle 21 to take the goods, the two squeeze legs 211 of the pickup baffle 21 push the slow-descent pallet 3 supporting the goods to move to the positioning chute 22. At the same time, the slow-descent pallet 3 temporarily stored in the positioning chute 22 is pushed to the balancing installation position of the lifting conveyor belt 42 to balance the next slow-descent pallet 3 assembled to the slow-descent installation position 411. The user's thrust on the pickup baffle 21 is used to fill the slow-descent pallet 3 at the balancing installation position, which not only realizes the recycling of the slow-descent pallet 3, but also reduces the design of additional power sources. The slow-descent pallet 3 is made of lightweight material and is very light, so the user does not feel much resistance when pushing the pickup baffle 21. Fig. 9 As shown, the pallet locking assembly 23 includes a wedge-shaped locking block 231 and a return spring 232. The return spring 232 is placed in the pickup area 2. The bottom end of the wedge-shaped locking block 231 is installed in the pickup area 2 and connected to the return spring 232. The top end of the wedge-shaped locking block 231 extends out of the pickup area 2. The wedge-shaped surface of the wedge-shaped locking block 231 faces the side of the slow-down installation position 411. When the slow-down pallet 3 carrying the goods is pushed into the positioning chute 22, the slow-down pallet 3 squeezes the wedge-shaped locking block 231 to move downward, and the wedge-shaped locking block 231 squeezes the return spring 232 to compress. When the slow-down pallet 3 moves into the positioning chute 22, the wedge-shaped locking block 231 is reset under the rebound force of the return spring 232 to achieve the locking of the position of the slow-down pallet 3 at the positioning chute 22.

[0030] like Figure 4As shown, the synchronous transmission assembly 43 of this embodiment includes two driving gear shafts 431 and two driven gear shafts 432, the two lifting conveyor belts 42 correspond one-to-one with the two slow-down conveyor belts 41 and are divided into two groups, the two driving gear shafts 431 correspond one-to-one with the two driven gear shafts 432 and are divided into two groups, the two groups of conveyor belts correspond one-to-one with the two groups of gear shafts, the driving gear shaft 431 of each group is connected to the slow-down conveyor belt 41, the driven gear shaft 432 in this group is connected to the lifting conveyor belt 42, and the driving gear shaft 431 in this group is meshed and connected with the driven gear shaft 432. After the goods fall onto the slow-down conveyor belt 41, the goods drive the slow-down conveyor belt 41 to rotate by their own gravity, the slow-down conveyor belt 41 drives the driving gear shaft 431 to rotate, and the driven gear shaft 432 is transmitted, and the lifting conveyor belt 42 rotates synchronously, so that when the slow-down conveyor belt 41 supports the slow-down support plate 3 to move downward, the lifting conveyor belt 42 supports the slow-down support plate 3 to move upward synchronously.

[0031] When the goods fall onto the slow-down support plate 3, the position may not be centered. The slow-down support plate 3 is subjected to uneven force, which causes uneven force on the slow-down conveyor belts 41 on both sides. That is, the slow-down conveyor belt 41 closer to the goods is subjected to greater force, and the slow-down conveyor belt 41 subjected to greater force rotates faster. The slow-down conveyor belt 41 on the other side is subjected to relatively less force, and the slow-down conveyor belt 41 subjected to less force rotates slower. The slow-down support plate 3 at the slow-down installation position 411 and the slow-down support plate 3 at the leveling installation position are skewed. Therefore, the synchronous transmission assembly 43 of this embodiment also includes a synchronous conveyor belt 433 and a synchronous gear shaft 434, such as Figure 4 As shown, the synchronous gear shaft 434 is meshedly connected with any driving gear shaft 431, and the synchronous conveyor belt 433 connects the synchronous gear shaft 434 and the other driving gear shaft 431, which can ensure that the two driving gear shafts 431 rotate synchronously and at the same speed in opposite directions, thereby ensuring that the two slow-descent conveyor belts 41 synchronously support the slow-descent pallet 3 to move downward, thereby avoiding the deflection of the slow-descent pallet 3.

[0032] like Figure 6 , Figure 7 and Figure 8As shown, the speed reduction mechanism 5 of this embodiment includes a gear pump 51, an air outlet pipe 52 and a nut 53. The gear pump 51 is connected to the synchronous gear shaft 434, and the gear pump 51 is provided with an air inlet 511 and an air outlet 512; one end of the air outlet pipe 52 is connected to the air outlet 512 of the gear pump 51, and the other end of the air outlet pipe 52 is provided with an external thread, and a speed limiting port 521 is provided at the external thread; the nut 53 is screwed to the external thread of the air outlet pipe 52, and is used to adjust the diameter of the speed limiting port 521. During the descent of the descent conveyor belt 41 supporting the descent plate 3, the synchronous gear shaft 434 drives the gear pump 51 to accelerate the exhaust from the air inlet 511, and the gas is discharged from the speed limiting port 521 on the outlet pipe 52. When the exhaust speed of the speed limiting port 521 reaches the maximum exhaust speed, the exhaust speed of the gear pump 51 no longer increases, and the gear pump 51 in turn limits the rotation speed of the synchronous gear shaft 434, which also limits the rotation speed of the descent conveyor belt 41. The deceleration mechanism 5 thus provides resistance to the descent of the descent plate 3, reduces its descent speed and acceleration, and reduces the impact speed of the goods and the descent plate 3 when they descend to the pickup area 2. Since the exhaust of the gear pump 51 is discharged from the speed limiting port 521, the speed limiting port 521 limits the exhaust speed of the gear pump 51, and the exhaust speed of the speed limiting port 521 also determines the maximum speed of the descent of the descent plate 3. The maximum exhaust speed of the speed limiting port 521 is related to the diameter. The larger the diameter, the greater the maximum exhaust speed, and vice versa. Therefore, in this embodiment, the diameter of the speed limiting port 521 is changed by screwing the nut 53, thereby adjusting the maximum speed of the slow-descent pallet 3. In addition, when facing goods of different weights, even if the maximum descending speed is the same, the heavier goods will hit the pickup area 2 with greater force, and the goods will be more easily damaged. Therefore, the maximum speed of the goods hitting the pickup area 2 can be changed by changing the diameter of the speed limiting port 521, so that the heavier goods hit the pickup area 2 at a lower speed and are not easily damaged.

[0033] like Figure 6 , Figure 7 and Figure 8As shown, the deceleration mechanism 5 of this embodiment also includes an accelerating elastic airbag 54 and a one-way valve 55. The accelerating elastic airbag 54 is connected to the air outlet pipe 52 to reduce the time consumed in the entire process of the slow-descent support plate 3 descending. The one-way valve 55 is installed on the air outlet pipe 52 and is located between the accelerating elastic airbag 54 and the gear pump 51 to prevent the accelerating elastic airbag 54 from blowing air in the opposite direction to the gear pump 51. In the initial stage of the descent of the slow-descent support plate 3 (i.e., the stage just beginning to descend), due to the presence of the accelerating elastic airbag 54, the air extraction speed of the gear pump 51 can be greater than the exhaust speed of the speed limiting port 521, and the excess air will be filled into the accelerating elastic airbag 54. Therefore, in the initial stage of the descent of the slow-descent support plate 3, the resistance provided by the deceleration mechanism 5 increases slowly, and the slow-descent support plate 3 can descend quickly. When the accelerating elastic airbag 54 expands to a certain extent, its elastic force is equal to the resistance provided by the deceleration mechanism 5 when the speed limiting port 521 reaches the maximum exhaust speed without the accelerating elastic airbag 54. At this time, the speed of the slow-descent support plate 3 reaches the maximum speed. Due to the slow-descent support plate 3 and its support Due to the inertia of the goods supported, for a short period of time thereafter, the air extraction speed of the gear pump 51 is still greater than the exhaust speed of the speed limit port 521 (at this time, the speed limit port 521 has reached the maximum exhaust speed), and air is still filled into the accelerating elastic airbag 54, which continues to expand, and its elastic force continues to increase so as to be greater than the above-mentioned resistance, and the descending speed of the slow-down pallet 3 begins to slow down, and the air extraction speed of the gear pump 51 begins to decrease until it is equal to the exhaust speed of the speed limit port 521. At this time, the gravity of the slow-down pallet 3 and the goods supported by it is balanced with the resistance to descent, and the slow-down pallet 3 and the goods supported by it descend at a uniform speed to the pickup area 2. By adding the accelerating elastic airbag 54, the slow-down pallet 3 and the goods supported by it begin to decelerate at the end of the descent process, and this deceleration process is slowly decelerated due to the change in the elastic force of the accelerating elastic airbag 54. Compared with the case without the accelerating elastic airbag 54, the time taken for the entire descent of the slow-down pallet 3 is less.

[0034] like Figure 2 and Fig.10As shown, the commodity carrier 1 of this embodiment is provided with a plurality of commodity release mechanisms 13 arranged side by side in the left-right direction, each commodity release mechanism 13 comprises a placement slot 131, a screw rod 132 and a release drive assembly 133, the placement slot 131 is arranged along the front-to-back direction of the commodity carrier 1, and is used to place commodities. The screw rod 132 is arranged in the placement slot 131, which is spiral, so that the placement slot 131 forms a plurality of compartments along the front-to-back direction, and each compartment is provided with a commodity; the release drive assembly 133 is connected to the screw rod 132, and is used to drive the screw rod 132 to rotate. After the user selects the commodity, the release drive assembly 133 drives the screw rod 132 to rotate 360 ​​degrees, and the screw rod 132 pushes the commodities in each compartment forward by one unit position, and the commodity in the front compartment is released. Since the slow-descent pallet 3 needs to be moved into position in advance before the product is released, when the release drive component 133 drives the spiral rod 132 to rotate and push the product forward, the bottom of the product first contacts the slow-descent pallet 3, while the upper part of the product is still in the spiral rod 132, which can easily cause the product to be stuck between the spiral rod 132 and the slow-descent pallet 3 and unable to move forward, or stuck on the spiral rod 132 and unable to be successfully released, especially for bottled beverages that are longer and have ridges at the bottle mouth. The ridges are easily stuck on the spiral rod 132. After the spiral rod 132 rotates 360 degrees, the beverage is still hanging on the spiral rod 132 and does not fall on the slow-descent pallet 3, resulting in a failure to release the product. Therefore, the product release mechanism 13 of this embodiment also includes a lever 134, which is arranged at the end of the spiral rod 132; when the lever 134 rotates with the spiral rod 132, the lever 134 can move the bottom of the product, similar to the action of sweeping the leg, to place the product horizontally onto the slow-down tray 3, thereby avoiding failure of product release.

[0035] Since the commodity can be laid down horizontally by the lever 134, if the lever 134 is always in rigid contact with the commodity, the commodity may abut against the side wall of the placement groove 131, and the lever 134 and the placement groove 131 will hold the commodity immobile, and the screw rod 132 cannot continue to rotate and push the commodity forward due to the restriction of the lever 134. Fig.10As shown in the figure (in order to facilitate the display of the gravity block 1345, one of the levers 134 hides the lever tube 1342 and the connecting spring 1344), the lever 134 of this embodiment includes two limit blocks 1341, a lever tube 1342, a limit sheet 1343, a connecting spring 1344 and a gravity block 1345, the two limit blocks 1341 are relatively arranged on the spiral rod 132, and a non-limiting opening 13411 is formed on both sides between the two limit blocks 1341; one end of the connecting spring 1344 is sleeved It is outside the two limit blocks 1341 and connected to the spiral rod 132, and the other end is connected to the dial tube 1342; the limit plate 1343 and the gravity block 1345 are arranged between the limit block 1341 and the dial tube 1342, one end of the limit plate 1343 is arranged between the two limit blocks 1341, and the other end is connected to the gravity block 1345, and the gravity block 1345 is movably installed in the dial tube 1342 to always keep the limit plate 1343 horizontal during the rotation of the dial tube 1342 and the limit block 1341. When the commodity supporting platform 1 releases the commodity, the screw rod 132 rotates and pushes the commodity forward, and the limit block 1341 rotates with the screw rod 132. Due to the eccentric design of the gravity block 1345, the posture remains unchanged during the rotation of the push tube 1342, so the limit plate 1343 always remains in a horizontal state. When the non-limiting openings 13411 on both sides of the limit block 1341 are aligned with the limit plate 1343, the push tube 1342 rotates with the screw rod 132 and is squeezed by the commodity. The push tube 1342 drives the limit plate 1343 to swing toward the non-limiting opening 13411 to avoid the bottom of the commodity contacting the inner wall of the placement groove 131, and the push tube 1342 and the placement groove 131 will jam the commodity. When the two limit blocks 1341 rotate to the two sides of the limit plate 1343 with the spiral rod 132, the two limit blocks 1341 limit the left and right swing of the limit plate 1343, and the lever 1342 cannot swing due to the limit blocks 1341 and the limit plate 1343, and the lever 1342 rigidly contacts the goods and puts the goods down. Through the cooperation of the limit blocks 1341, the limit plate 1343 and the gravity block 1345, the lever 134 is designed as a variable stiffness structure, so that the stiffness changes when the lever 134 moves to different positions, ensuring that the goods can smoothly fall from the goods carrying platform 1 to the slow-down support plate 3.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. Vending machines, including: The commodity loading platform is used to place and lock the commodities; The pickup area is located below the product loading platform for users to pick up goods; After the user selects the goods, the goods carrying platform releases the selected goods, and the goods fall into the pickup area for the user to pick up; It is characterized by further comprising: The slow-drop pallet is used to support the purchased goods released from the goods carrying platform; A slow-down mechanism, used for supporting a slow-down support plate; A deceleration mechanism connected to the slow-descent mechanism; After the commodity carrying platform releases the commodity, the commodity falls onto the slow-descent pallet. The commodity descends under the action of its own gravity and the support of the slow-descent pallet and the slow-descent mechanism. The deceleration mechanism reduces the descending speed and acceleration of the commodity and the slow-descent pallet to reduce the impact force between the commodity and the pickup area.

2. The vending machine according to claim 1, characterized in that: The deceleration mechanism includes: A gear pump is connected to the slow-down mechanism, and the gear pump is provided with an air inlet and an air outlet; An air outlet pipe is connected to the air outlet of the gear pump and is provided with a speed limiting port; When the slow-descent mechanism supports the slow-descent pallet to descend, the gear pump is driven to extract air from the air inlet, and the gas is discharged from the speed limiting port, so that the exhaust speed through the speed limiting port reduces the speed and acceleration of the descent of the goods and the slow-descent pallet.

3. The vending machine according to claim 2, characterized in that: The deceleration mechanism also includes an accelerating elastic airbag, which is connected to an air outlet pipe to reduce the time consumed in the entire process of descending the slow-descent support plate.

4. The vending machine according to claim 1, characterized in that: The commodity carrying platform is provided with a commodity releasing mechanism, which includes: A placement slot, arranged along the front-to-back direction, for placing goods; The spiral rod is arranged in the placement groove and is spiral-shaped, so that the placement groove forms a plurality of compartments along the front-back direction, and each compartment is used to place a commodity; Release the driving assembly, used to drive the screw rod to rotate; A lever, arranged at the end of the spiral rod; After the user selects the goods, the drive assembly is released to drive the spiral rod to rotate 360 ​​degrees. The spiral rod pushes the goods in each compartment forward one unit position, and the goods in the front compartment are released. The lever moves the bottom of the released goods as the spiral rod rotates to place them horizontally on the slow-descent pallet.

5. The vending machine according to claim 4, characterized in that: The levers include: There are two limit blocks, which are arranged on the spiral rod opposite to each other, and a non-limiting opening is formed on both sides between the two limit blocks; The pull tube is elastically connected to the spiral rod and rotates with the spiral rod; A limiting piece, one end of which is arranged between the two limiting blocks; The gravity block is movably installed in the dial tube and connected to the other end of the limit plate to always keep the limit plate horizontal during the rotation of the dial tube and the limit block; The spiral rod rotates and pushes the product forward, and the limit block rotates with the spiral rod. When the non-limiting opening is aligned with the limit piece, the push tube is squeezed by the product and drives the limit piece to swing toward the non-limiting opening to avoid the push tube and the placement slot from jamming the product.

6. The vending machine according to claim 1, characterized in that: Each commodity carrying platform is provided with a pallet temporary storage slide rail, and temporarily stores at least one slow-drop pallet for supporting the purchased commodities; The pickup area is provided with a pickup baffle and a positioning chute equipped with at least one slow-down pallet; The descending mechanism includes: A set of slow-descent conveyor belts, arranged in front of the commodity carrying platform, for supporting the slow-descent pallet that moves to the front of the commodity carrying platform, and the slow-descent conveyor belts are provided with a plurality of slow-descent mounting positions for assembling the slow-descent pallet; A set of lifting conveyor belts is arranged behind the commodity loading platform and is used to support the slow-descent pallet moved to the rear of the commodity loading platform. The lifting conveyor belt is provided with a plurality of lifting installation positions for assembling the slow-descent pallet. When the lifting conveyor belt is stationary, the lowest lifting installation position is a balancing installation position, which is equipped with a slow-descent pallet to balance the slow-descent pallet moved to the slow-descent installation position. A synchronous transmission assembly connects the slow-down conveyor belt and the lifting conveyor belt, so as to drive the slow-down pallet supported by the lifting conveyor belt to move upward synchronously when the slow-down conveyor belt supports the slow-down pallet to move downward; When the commodity carrying platform releases the selected commodity, the temporary storage slide rail is triggered to release the slow-descent pallet, and the released slow-descent pallet moves and is assembled to the slow-descent installation position of the slow-descent conveyor belt, and the commodity falls from the commodity carrying platform onto the slow-descent pallet, and relies on its own gravity to drive the slow-descent pallet to descend, and the lifting conveyor belt drives the slow-descent pallet at the balancing installation position to rise synchronously, and when the slow-descent pallet supporting the commodity descends to the pickup area, the lifting conveyor belt drives the slow-descent pallet at the balancing installation position to rise to the above-mentioned commodity carrying platform and align with the pallet temporary storage slide rail of the commodity carrying platform, and the slow-descent pallet slides into the pallet temporary storage slide rail of the commodity carrying platform for temporary storage, and the user pushes open the pickup baffle to take away the commodity, and the pickup baffle pushes the slow-descent pallet supporting the commodity to move to the positioning slide slot, and at the same time, the slow-descent pallet at the positioning slide slot is pushed to the balancing installation position of the lifting conveyor belt to balance the next slow-descent pallet assembled to the slow-descent installation position.

7. The vending machine according to claim 6, characterized in that: The commodity carrying platform is provided with a pallet release mechanism and a release drive assembly, and the pallet release mechanism includes: An eccentric block connected to a release drive assembly; A shift block, arranged on one side of the eccentric block; The power cylinder is provided with a power piston rod, and the shift block is installed on the power piston rod; The unlocking cylinder is installed under the commodity carrying platform and connected to the power cylinder. The unlocking cylinder is provided with an unlocking piston rod and a return spring. The unlocking piston rod locks the slow-down pallet at the front of the pallet temporary storage slide rail; When the commodity carrier releases the selected commodity, the release drive assembly drives the eccentric block to rotate, the eccentric block drives the shifting block to move, the power piston rod squeezes the gas into the unlocking cylinder, the unlocking piston rod moves up and disengages from the above-mentioned slow-descent pallet, so that the slow-descent pallet is moved out from the pallet temporary storage slide rail; the return spring squeezes the unlocking piston rod downward, so that the unlocking piston rod locks the next slow-descent pallet in the pallet temporary storage slide rail and does not move.

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