Leakage-proof and jam-proof feeding device of packaging machine

Abstract

A kind of leakage-proof and anti-stuck feeding device of packaging machine, including rack and feeding mechanism arranged on rack.Feeding mechanism includes conveying dynamic cooperation unit, static cooperation unit and power drive unit.Conveying dynamic cooperation unit and static cooperation unit constitute horizontal reciprocating motion adaptation structure, power drive unit is transmission connection with conveying dynamic cooperation unit.Non-metal wear-resistant layer is arranged on the sliding adaptation surface of both, and both are adjusted in space by positioning floating structure, which limits horizontal relative displacement, and allows conveying dynamic cooperation unit to be self-adaptive floating in vertical direction.The invention forms dynamic self-adaptive sealing by the synergistic effect of non-metal wear-resistant layer and positioning floating structure, eliminates traditional rigid gap, effectively prevents powder overflow and liquid leakage, avoids material to be stuck in sliding interface;Non-metal wear-resistant layer has self-lubricating characteristics, significantly reduces the wear of metal parts, prolongs the service life of equipment, and improves operation reliability.

Description

Technical Field

[0001] This invention relates to the field of conveying device technology, and in particular to a leak-proof and jam-proof feeding device for packaging machines. Background Technology

[0002] In the food packaging industry, filling is a widely used core packaging process, applicable to the production and processing of various foods. The filling demand for powdered foods, canned fruits, and other liquid foods is particularly prominent. The rationality of the filling process is directly related to food production efficiency, product hygiene, and equipment operation and maintenance costs.

[0003] Currently, most food filling equipment on the market is made of metal. Due to limitations in metal processing technology, equipment assembly precision, and assembly characteristics, there are inevitably certain gaps between the various connection parts of the equipment. At the same time, in order to avoid hard friction between the filling outlet and the filling mold and to prevent wear of parts and extend the service life of the equipment, an appropriate gap is usually reserved between the two.

[0004] However, in actual filling processes, these gaps and reserved spaces can cause significant drawbacks: when filling powdered materials, the powder can easily overflow from the gaps; when filling liquid foods, the liquid can easily leak from the gaps. This not only causes unnecessary waste of materials but also contaminates the surface of the filling equipment and the surrounding production area, significantly increasing the difficulty of cleaning the equipment and affecting its cleanliness.

[0005] Because the food industry has stringent requirements for production hygiene, inadequate or untimely equipment cleaning not only increases equipment maintenance costs but may also create food safety hazards, making it difficult to meet the industry's demands for efficient and hygienic production. Therefore, there is an urgent need to develop a technical solution that can effectively seal gaps and prevent material leakage, in order to optimize the filling process, ensure equipment cleanliness, reduce maintenance costs, and meet the actual production needs of the food packaging industry. Summary of the Invention

[0006] The purpose of this invention is to provide a leak-proof and jam-proof feeding device for packaging machines, which effectively seals gaps and prevents material leakage.

[0007] To achieve the above objectives, the present invention provides a leak-proof and jam-proof feeding device for a packaging machine, including a frame and a feeding mechanism disposed on the frame. The feeding mechanism includes a conveying dynamic engagement unit, a static engagement unit that engages with the conveying dynamic engagement unit, and a power drive unit that drives the conveying dynamic engagement unit to move. The conveying dynamic mating unit and the static mating unit form a matching structure that reciprocates relative to each other in the horizontal direction, and the power drive unit is connected to the conveying dynamic mating unit in a transmission connection. The sliding mating surfaces of the conveying dynamic mating unit and the static mating unit are provided with a non-metallic wear-resistant layer, which is used to reduce friction between the two during relative movement. The conveying dynamic mating unit and the static mating unit are spatially adjusted through a positioning floating structure; that is, the positioning floating structure restricts the relative displacement of the conveying dynamic mating unit and the static mating unit in the horizontal direction, and allows the conveying dynamic mating unit to adaptively float relative to the static mating unit in the vertical direction. The static fitting unit is provided with a material output channel, and the conveying dynamic fitting unit is provided with a material output end adapted to the material output channel. When the material output end and the material output channel are connected, a material conveying path is formed.

[0008] Preferably, the static fitting unit includes a positioning support member and a limiting wall. The limiting wall and the positioning support member cooperate to form a guide space. The positioning support member has the material output channel. The conveying dynamic fitting unit reciprocates in the horizontal direction within the guide space. The conveying dynamic cooperation unit includes a conveying carrier and a sealing wall. The sealing wall cooperates with the conveying carrier to form a material receiving cavity. The conveying carrier is provided with the material output end. The mutual sliding mating surfaces of the positioning support and the conveying support are non-metallic wear-resistant surfaces.

[0009] Preferably, the positioning floating structure includes a limiting structure and a floating structure; the limiting structure is disposed on the static fitting unit and is used to limit the horizontal relative displacement of the conveying moving fitting unit relative to the static fitting unit; the floating structure is disposed between the conveying moving fitting unit and the static fitting unit and provides adaptation space for the conveying moving fitting unit to float vertically relative to the static fitting unit.

[0010] Preferably, the power drive unit includes a power output component and a horizontal guide component; One end of the power output component is fixedly connected to the static mating unit, and the other end is drivenly connected to the conveying dynamic mating unit to provide reciprocating motion power; The horizontal guide component is fixedly connected to the static fitting unit and is horizontally slidably adapted to the conveying dynamic fitting unit. The horizontal guide component is used to guide and limit the horizontal movement of the conveying dynamic fitting unit.

[0011] Preferably, it further includes a material on / off assembly, which includes a driving component and an on / off actuation component. The driving component is fixed to the side of the positioning carrier away from the conveying carrier and its output end is connected to the on / off execution component. The on / off execution component is used to control the opening and closing of the material conveying passage.

[0012] Preferably, the static fitting unit further includes a material guiding component; the material guiding component includes a guiding body and a fixing component, the fixing component is fixedly disposed on the downstream side of the on / off execution component, the guiding body is fixedly connected to the fixing component and is disposed corresponding to the material conveying path, and is used to guide the output material.

[0013] Preferably, the conveying dynamic mating unit further includes an anti-jamming component; The anti-jamming component includes an anti-jamming drive component and an anti-jamming execution component. The anti-jamming drive component is fixedly connected to the sealing wall and its output end is drivenly connected to the anti-jamming execution component. When the power drive unit drives the conveying dynamic cooperation unit to reset, the anti-jamming drive component drives the anti-jamming execution component to extend into the material conveying passage to prevent material jamming.

[0014] Beneficial effects

[0015] This invention utilizes a positioning and floating structure to spatially adjust the conveying dynamic and static mating units. This structure restricts the relative horizontal displacement of the two units while allowing the dynamic unit to adaptively float relative to the static unit in the vertical direction. Combined with a non-metallic wear-resistant layer on the sliding mating surfaces, this creates a dynamic adaptive seal, eliminating traditional rigid gaps. Even with long-term operation or manufacturing errors, the sliding interface remains tightly fitted, preventing powder spillage and liquid leakage, significantly improving the cleanliness of the equipment surface and surrounding areas. Simultaneously, an anti-jamming component on the dynamic mating unit actively extends into the material conveying path during reset, removing residual material at the cutting interface. This fundamentally prevents material from being sheared, squeezed, and jammed into the sliding surface, ensuring smooth and unobstructed feeding and significantly improving equipment reliability. Furthermore, based on the aforementioned leak-free and jam-free structural characteristics, the equipment does not require frequent shutdowns for cleaning or troubleshooting. The self-lubricating properties of the non-metallic wear-resistant layer reduce wear on metal parts, effectively extending the replacement cycle of vulnerable parts, thereby significantly reducing manual cleaning costs, maintenance time costs, and spare parts replacement costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention.

[0018] Figure 2 This is a top view schematic diagram of Embodiment 1 of the present invention.

[0019] Figure 3This is a side view schematic diagram of Embodiment 1 of the present invention.

[0020] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0021] Figure 5 This is a cross-sectional view of the material flow control component of the present invention.

[0022] Figure 6 This is a partial cross-sectional schematic diagram of the material guiding component and the anti-jamming component of the present invention.

[0023] Figure 7 This is a schematic diagram of the motion of the present invention.

[0024] In the diagram: 200 - Feeding mechanism; 210 - Conveying dynamic coupling unit; 211 - Conveying carrier; 212 - Sealing wall; 213 - Material output end; 240 - Non-metallic wear-resistant layer; 220 - Static coupling unit; 221 - Positioning carrier; 222 - Limiting wall; 223 - Material output channel; 230 - Power drive unit; 231 - Power output component; 232 - Horizontal guide component; 240 - Non-metallic wear-resistant layer; 250 - Positioning floating structure; 251 - Limiting structure; 252 - Floating structure; 260 - Material on / off component; 261 - Drive component; 262 - On / off execution component; 270 - Material guiding component; 271 - Guide body; 272 - Fixed component; 280 - Anti-jamming component; 281 - Anti-jamming drive component; 282 - Anti-jamming execution component. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0026] like Figure 1 As shown, this embodiment provides a leak-proof and jam-proof feeding device for a packaging machine, including a frame and a feeding mechanism 200 fixedly installed on the frame. A feeding device (not shown, such as a vibrating plate or hopper) is provided above the feeding mechanism 200 to supply the material to be packaged to the feeding mechanism 200; a conveying mechanism (not shown, such as a conveyor belt) is provided below the feeding mechanism 200 to receive and convey the material output from the feeding mechanism 200, so as to send the material into the subsequent packaging process.

[0027] Specifically, a non-metallic wear-resistant layer 240 is provided on the sliding mating surfaces of the conveying dynamic mating unit 210 and the static mating unit 220. This wear-resistant layer can be made of polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene (UHMW-PE), or other non-metallic materials with low friction coefficients and high wear resistance. The core functions of this wear-resistant layer are: first, to reduce the frictional resistance during relative movement of the two units, making the operation smoother and reducing power loss; second, to utilize the flexibility of the non-metallic material itself to form a tighter seal with the cooperation of the floating structure; and third, to avoid the heat generation problem caused by metal-to-metal hard friction. After prolonged relative movement, the temperature of the metal friction pair increases, and the coefficient of friction rises accordingly. The sliding surface is prone to stickiness and sluggishness, making the operation increasingly difficult and affecting the feeding positioning accuracy and stability. In contrast, the non-metallic wear-resistant layer 240 has good self-lubricating properties, low thermal conductivity, and generates less frictional heat that does not easily accumulate. It maintains smooth and stable operation over long-term continuous operation without sluggishness, thus ensuring the durability and reliability of the equipment.

[0028] In one embodiment, the conveying dynamic mating unit 210 and the static mating unit 220 can be manufactured entirely from the aforementioned non-metallic wear-resistant material. This method eliminates the need for an additional wear-resistant layer, as the material itself possesses wear-reducing, self-lubricating, and heat-resistant properties, resulting in a simpler structure.

[0029] In a preferred embodiment, the static fitting unit 220 specifically includes a rigid positioning support member 221 and limiting walls 222 located on both sides or circumferentially thereon. The limiting walls 222 and the positioning support member 221 cooperate to form a precise guiding space non-metallic wear-resistant layer 240. The upper or lower surface of the positioning support member 221 is provided with the material output channel 223. The conveying dynamic fitting unit 210 is accommodated within the guiding space non-metallic wear-resistant layer 240 and reciprocates therein in the horizontal direction.

[0030] Accordingly, the conveying dynamic engagement unit 210 includes a conveying support member 211 and a sealing wall 212. The sealing wall 212 and the conveying support member 211 together enclose a material receiving cavity with a non-metallic wear-resistant layer 240 for temporarily storing the material to be conveyed. The bottom of the conveying support member 211 (or the surface opposite to the positioning support member 221) is provided with the material output end 213. In particular, the upper surface (the surface that slides in contact with the conveying support member 211) and the lower surface of the conveying support member 211 are both covered with the non-metallic wear-resistant layer 240, or at least one of the surfaces is covered with the wear-resistant layer.

[0031] In another embodiment, the substrates of the conveying dynamic mating unit 210 and the static mating unit 220 are still made of metal, with a layer of non-metallic wear-resistant material only provided / or added on the mating surfaces where they slide against each other. This approach combines the structural strength of the metal substrate with the tribological advantages of the non-metallic surface, facilitating modifications or partial replacements on existing equipment.

[0032] Furthermore, the conveying dynamic mating unit 210 and the static mating unit 220 are spatially adjusted via a positioning floating structure 250. This positioning floating structure 250 includes a limiting structure 251 and a floating structure 252, used to limit the relative displacement of the conveying dynamic mating unit 210 and the static mating unit 220 in the horizontal direction, and to allow the conveying dynamic mating unit 210 to adaptively float relative to the static mating unit 220 in the vertical direction.

[0033] Example 1

[0034] The positioning floating structure 250 is achieved through the cooperation of a guide pin and an elongated hole. Specifically, as shown in the figure: a guide pin is fixedly installed at the power output end of the power drive unit 230, and an elongated hole is correspondingly provided on the conveying dynamic engagement unit 210. The horizontal dimension of the elongated hole matches the diameter of the guide pin, and its two horizontal end faces form a short side that abuts against the guide pin to limit the horizontal movement of the conveying dynamic engagement unit 210 relative to the power drive unit 230, ensuring that the two move relative to each other within a preset effective stroke, thus forming the limiting structure 251. The vertical dimension of the elongated hole is larger than the diameter of the guide pin, and its two vertical end faces form a long side. A movement gap is reserved between this long side and the guide pin to allow the conveying dynamic engagement unit 210 to adaptively float relative to the power drive unit 230 in the vertical direction, thus forming the floating structure 252.

[0035] It should be noted that the above-described fit between the guide pin and the elongated hole is only one specific embodiment. Those skilled in the art will understand that as long as the horizontal limiting and vertical floating functions between the conveying dynamic fitting unit 210 and the static fitting unit 220 can be achieved, other implementations of the positioning floating structure 250 (such as setting the guide pin on the static fitting unit 220) are also feasible, and these variations do not depart from the protection scope of this invention.

[0036] With the aforementioned positioning floating structure 250, when the conveying dynamic mating unit 210 is subjected to an external force in the vertical direction or encounters uneven installation, it can automatically adjust its vertical position, so that the non-metallic wear-resistant layer 240 always maintains uniform and tight contact with the relative sliding surface of the static mating unit 220, thereby dynamically compensating for processing errors and assembly tolerances, and eliminating friction caused by rigid gaps.

[0037] Example 2

[0038] The conveying dynamic mating unit 210 is rigidly connected to the power drive unit 230, and there is no relative floating between them; the static mating unit 220 has the ability to float vertically relative to the frame.

[0039] Specifically, the positioning floating structure 250 includes a limiting structure 251 and a floating structure 252. The limiting structure 251 is disposed between the static mating unit 220 and the frame, and is used to limit the horizontal displacement of the static mating unit 220 relative to the frame. In one embodiment, a horizontal guide groove is fixedly provided on the frame, and a corresponding guide protrusion is provided on the static mating unit 220. The guide protrusion is accommodated in the horizontal guide groove, and the two end faces of the horizontal guide groove abut against the guide protrusion to limit the horizontal movement range of the static mating unit 220.

[0040] The floating structure 252 is disposed between the static mating unit 220 and the frame, allowing the static mating unit 220 to adaptively float relative to the frame in the vertical direction. In one embodiment, a vertical guide post is fixedly disposed on the frame, and a corresponding vertical guide hole is provided on the static mating unit 220. The guide post passes through the guide hole, and the vertical dimension of the guide hole is larger than the diameter of the guide post, with a clearance between them to allow the static mating unit 220 to float vertically. The static mating unit 220 rests on the support surface of the frame under its own weight, or is supported upwards by a compression spring disposed between the static mating unit 220 and the frame.

[0041] During operation, the power drive unit 230 drives the conveying dynamic mating unit 210 to move horizontally. When encountering uneven installation or changes in external force, the static mating unit 220 automatically floats up and down, so that its sliding surface always keeps in close contact with the non-metallic wear-resistant layer 240 of the conveying dynamic mating unit 210.

[0042] Example 3

[0043] The power drive unit 230 is mounted on a floating platform, which can float vertically relative to the frame; the conveying dynamic engagement unit 210 is rigidly connected to the power output end of the power drive unit 230, and there is no relative floating between them; the static engagement unit 220 is fixed on the frame.

[0044] Specifically, the positioning floating structure 250 includes a limiting structure 251 and a floating structure 252. The limiting structure 251 is disposed between the power drive unit 230 and the frame, and is used to limit the horizontal displacement of the power drive unit 230 relative to the frame. In one embodiment, a horizontal guide rail is fixedly disposed on the frame, and a slider is correspondingly disposed on the mounting base of the power drive unit 230. The slider slides in cooperation with the guide rail, and limiting blocks are provided at both ends of the guide rail to limit the horizontal movement range of the power drive unit 230.

[0045] The floating structure 252 is disposed between the power drive unit 230 and the frame, allowing the power drive unit 230 to adaptively float relative to the frame in the vertical direction. In one embodiment, a vertical guide pin is fixedly disposed on the frame, and a vertical elongated hole is correspondingly formed on the mounting base of the power drive unit 230. The guide pin passes through the elongated hole, the vertical dimension of which is larger than the diameter of the guide pin, with a clearance between them to allow the power drive unit 230 to float vertically. The power drive unit 230 rests on the support surface of the frame under its own weight, or is supported upwards by a compression spring disposed between the mounting base and the frame.

[0046] During operation, the power drive unit 230 drives the conveying dynamic mating unit 210 to move horizontally. When vertical adaptive adjustment is required, the entire power drive unit 230, together with the conveying dynamic mating unit 210, floats up and down, while the static mating unit 220 remains fixed, so that the non-metallic wear-resistant layer 240 of the conveying dynamic mating unit 210 and the sliding surface of the static mating unit 220 always remain in close contact.

[0047] Example 4

[0048] The power drive unit 230 and the conveyor dynamic coordination unit 210 are connected by a flexible transmission component instead of a rigid connection, thereby decoupling the constraints in the vertical direction.

[0049] Specifically, the power drive unit 230 and the conveying dynamic engagement unit 210 are connected by a flexible transmission component, which can be a chain, a timing belt, or a wire rope. The flexible transmission component only transmits horizontal tension or thrust and does not constrain the vertical position. The conveying dynamic engagement unit 210 rests directly on the sliding surface of the static engagement unit 220, maintaining contact with the non-metallic wear-resistant layer 240 by its own weight.

[0050] The positioning floating structure 250 includes a limiting structure 251 and a floating structure 252. The limiting structure 251 is disposed between the conveying moving engagement unit 210 and the static engagement unit 220, and is used to limit the horizontal movement of the conveying moving engagement unit 210 relative to the static engagement unit 220. As one embodiment, limiting blocks are fixedly provided at both ends of the static engagement unit 220 in the horizontal movement direction. When the conveying moving engagement unit 210 moves to its limit position, its end face abuts against the limiting blocks to achieve stroke limitation.

[0051] The floating structure 252 is formed by the weight of the conveying dynamic mating unit 210 and its contact relationship with the static mating unit 220. Since the flexible transmission component does not transmit vertical force, the conveying dynamic mating unit 210 is unrestrained in the vertical direction and can freely fall onto the sliding surface of the static mating unit 220 under its own weight. When encountering uneven installation or slight undulations on the sliding surface, the conveying dynamic mating unit 210 can float up and down with the contour of the sliding surface, always maintaining a close fit.

[0052] During operation, the power drive unit 230 drives the conveying dynamic mating unit 210 to reciprocate horizontally via a flexible transmission component. During this motion, the conveying dynamic mating unit 210 remains in contact with the sliding surface of the static mating unit 220 by its own weight, automatically adjusting its vertical position according to the sliding surface, thus achieving a dynamic seal. A limit stop ensures that the conveying dynamic mating unit 210 does not exceed its effective stroke in the horizontal direction.

[0053] Furthermore, in the material conveying path, the static fitting unit 220 is provided with a material output channel 223, and the conveying dynamic fitting unit 210 is provided with a material output end 213 that is precisely adapted to the material output channel 223 in shape, size, and position. When the power drive unit 230 drives the conveying dynamic fitting unit 210 to move horizontally to a specific position, the material output end 213 corresponds vertically with and connects to the material output channel 223, thereby forming a complete material conveying path that allows material to pass through.

[0054] See Figure 2The power drive unit 230 includes a power output component 231 (e.g., a cylinder, hydraulic cylinder, linear motor, or servo motor and lead screw assembly) and a horizontal guide component 232 (e.g., a linear slide rail pair or a guide shaft and linear bearing pair). One end of the power output component 231 is fixedly connected to the positioning support member 221 of the static mating unit 220, which serves as a fixed base, and the other end (i.e., the movable end) is drively connected to the conveying support member 211 of the conveying dynamic mating unit 210 to provide stable reciprocating motion power. The horizontal guide component 232 has an elongated hole and is also fixedly connected to the guide pin on the static mating unit 220, forming a horizontal sliding fit relationship with the conveying dynamic mating unit 210, thereby precisely guiding and limiting the horizontal movement of the conveying dynamic mating unit 210 and ensuring the straightness of its motion trajectory.

[0055] To achieve automated control of material output, this device also includes a material on / off assembly 260. The material on / off assembly 260 includes a drive component 261 (such as a miniature cylinder or electromagnet) and an on / off actuation component 262 (such as an L-shaped baffle). The drive component 261 is fixedly installed on the side of the positioning support 221 away from the conveying support 211 (i.e., below), and its output end passes upward through the positioning support 221 and connects to the on / off actuation component 262. The on / off actuation component 262 is located on the path of the material output channel 223 and is used to quickly open or close the material conveying passage according to instructions.

[0056] In addition, to accurately guide the material into the packaging container, the static fitting unit 220 also includes a material guiding assembly 270. This assembly includes a guide body 271 (such as a funnel or conduit) and a fixing component 272. The fixing component 272 is fixedly disposed downstream of the on / off actuator 262 (i.e., behind in the material output direction) and is fixedly connected to the guide body 271. The inlet end of the guide body 271 is aligned with the material output channel 223 to collect and guide the material leaving the material output channel 223, ensuring it falls accurately into the packaging container below.

[0057] See Figure 4To address the potential jamming issue when materials are closed, the conveying dynamic coordination unit 210 further includes an anti-jamming component 280. This anti-jamming component 280 comprises an anti-jamming drive component 281 (e.g., a miniature cylinder) and an anti-jamming actuation component 282 (e.g., a push rod). The anti-jamming drive component 281 is fixedly connected to the sealing wall 212 of the conveying dynamic coordination unit 210, and its output end is drively connected to the anti-jamming actuation component 282. Its working logic is as follows: When a feeding is completed, the power drive unit 230 drives the entire conveying dynamic coordination unit 210 to move horizontally in the reset direction (i.e., the direction in which the material output end 213 and the material output channel 223 are misaligned). At the end of the movement, the anti-jamming drive component 281 drives the anti-jamming execution component 282 to briefly extend into the material conveying passage from the side or vertical (especially the opening of the material output end 213 or the material output channel 223 or the material guide component 270), forcibly pushing the material that may remain in the area due to gravity or adhesion back into the non-metallic wear-resistant layer 240 of the material receiving cavity or completely releasing it, thereby preventing the material from being squeezed, cut or stuck between the sliding surfaces in the relative shearing motion, ensuring the accuracy of the amount of the next feeding and the reliability of the action.

[0058] The working principle is as follows: Initial state (standby state): The conveying dynamic engagement unit 210 is located on one side of the non-metallic wear-resistant layer 240 of the guide space (e.g., the far right side), the material output end 213 is offset from the material output channel 223, the material on / off component 260 is closed, and the material receiving cavity is filled with the material to be conveyed.

[0059] Feeding stage: The power drive unit 230 starts, pushing the conveyor coordination unit 210 to move to the left along the horizontal guide assembly 232. When the material output end 213 is precisely aligned with the material output channel 223, the power drive unit 230 stops. At this time, the drive component 261 of the material on / off assembly 260 actuates, causing the on / off execution component 262 to open the material output channel 223. Under the action of gravity or external pressure, the material flows from the non-metallic wear-resistant layer 240 of the material receiving cavity through the material output end 213, the material output channel 223, and the material guide assembly 270, finally falling into the packaging container. During this process, the anti-jamming execution component 282 of the anti-jamming assembly 280 remains in a retracted state, without interfering with the material flow.

[0060] Reset Phase: After the required feeding amount is reached, the power drive unit 230 reverses its direction, causing the conveyor coordination unit 210 to reset to the right. After reset, the anti-jamming drive assembly 281 immediately drives the anti-jamming actuator 282 to extend into the area of ​​the material output end 213 or the material output channel 223 to perform a "sweeping" or "pushing away" action, ensuring that no material remains on the cutting interface. Subsequently, the anti-jamming actuator 282 and the on / off actuator 262 retract, and the entire device returns to its initial state, ready for the next feeding cycle.

[0061] Throughout the reciprocating motion, the positioning floating structure 250 consistently applies a downward elastic force to the conveying dynamic mating unit 210, ensuring that the non-metallic wear-resistant layer 240 on its lower surface remains in close contact with the non-metallic wear-resistant layer 240 on the upper surface of the positioning bearing 221. Even if minor dimensional changes occur due to wear or temperature variations, the floating structure 252 can automatically compensate, ensuring constant contact pressure and thus achieving dynamic sealing to prevent material leakage.

[0062] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A leak-proof and jam-proof feeding device for a packaging machine, comprising a frame and a feeding mechanism mounted on the frame, characterized in that, The feeding mechanism includes a conveying dynamic engagement unit, a static engagement unit that engages with the conveying dynamic engagement unit, and a power drive unit that drives the conveying dynamic engagement unit to move. The conveying dynamic mating unit and the static mating unit form a matching structure that reciprocates relative to each other in the horizontal direction, and the power drive unit is connected to the conveying dynamic mating unit in a transmission connection. The sliding mating surfaces of the conveying dynamic mating unit and the static mating unit are provided with a non-metallic wear-resistant layer, which is used to reduce friction between the two during relative movement. The conveying dynamic mating unit and the static mating unit are spatially adjusted through a positioning floating structure; that is, the positioning floating structure restricts the relative displacement of the conveying dynamic mating unit and the static mating unit in the horizontal direction, and allows the conveying dynamic mating unit to adaptively float relative to the static mating unit in the vertical direction. The static fitting unit is provided with a material output channel, and the conveying dynamic fitting unit is provided with a material output end adapted to the material output channel. When the material output end is connected to the material output channel, a material conveying path is formed. The static fitting unit includes a positioning support and a limiting wall. The limiting wall and the positioning support cooperate to form a guide space. The positioning support has the material output channel. The conveying dynamic fitting unit reciprocates in the horizontal direction within the guide space. The conveying dynamic cooperation unit includes a conveying carrier and a sealing wall. The sealing wall cooperates with the conveying carrier to form a material receiving cavity. The conveying carrier is provided with the material output end. The mutual sliding mating surfaces of the positioning support and the conveying support are non-metallic wear-resistant surfaces; The positioning floating structure includes a limiting structure and a floating structure; the limiting structure is disposed on the static fitting unit and is used to limit the horizontal relative displacement of the conveying moving fitting unit relative to the static fitting unit; the floating structure is disposed between the conveying moving fitting unit and the static fitting unit and provides adaptation space for the conveying moving fitting unit to float in the vertical direction relative to the static fitting unit. The power drive unit includes a power output component and a horizontal guide component; One end of the power output component is fixedly connected to the static mating unit, and the other end is drivenly connected to the conveying dynamic mating unit to provide reciprocating motion power; The horizontal guide component is fixedly connected to the static mating unit and is horizontally slidably adapted to the conveying dynamic mating unit. The horizontal guide component is used to guide and limit the horizontal movement of the conveying dynamic mating unit. The conveying dynamic coordination unit also includes an anti-jamming component; The anti-jamming component includes an anti-jamming drive component and an anti-jamming execution component. The anti-jamming drive component is fixedly connected to the sealing wall and its output end is drivenly connected to the anti-jamming execution component. When the power drive unit drives the conveying dynamic cooperation unit to reset, the anti-jamming drive component drives the anti-jamming execution component to extend into the material conveying passage to prevent material jamming.

2. The anti-leakage and anti-jamming feeding device for a packaging machine as described in claim 1, characterized in that, It also includes material on / off components, The material switching assembly includes a driving component and a switching execution component. The driving component is fixed to the side of the positioning carrier away from the conveying carrier and its output end is connected to the on / off execution component. The on / off execution component is used to control the opening and closing of the material conveying passage.

3. The anti-leakage and anti-jamming feeding device for a packaging machine as described in claim 2, characterized in that, The static fitting unit further includes a material guiding component; the material guiding component includes a guiding body and a fixing component, the fixing component is fixedly disposed on the downstream side of the on / off execution component, the guiding body is fixedly connected to the fixing component and is disposed corresponding to the material conveying path, and is used to guide the output material.

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