Paper wrapping machine with elongated upper forming section

Abstract

The utility model provides a paper wrapper with elongated upper forming section and belongs to the technical field of packaging machinery. The paper wrapper comprises an upper forming mechanism and a lower forming mechanism, the upper forming mechanism is located above the lower forming mechanism, and the two are arranged in a staggered manner in the horizontal direction, so that the outlet end of the upper forming mechanism is elongated relative to the outlet end of the lower forming mechanism in the direction of carton conveying; the outlet end of the lower forming mechanism is sequentially provided with a transition roller and an outlet conveying net chain. According to the utility model, the outlet of the upper forming mechanism is elongated and arranged in a staggered manner, so that after the lower forming mechanism releases the carton, the upper part of the carton can still be continuously pressed by the upper forming mechanism in an elongated stroke, the effective carton pressing time is significantly prolonged, and the carton forming quality is improved; meanwhile, the upper forming mechanism continuously clamps and conveys in the elongated section, realizes continuous and seamless transfer with the outlet conveying net chain, completely eliminates the "carton stopping" phenomenon at the outlet of the paper wrapper, ensures the continuous output of the carton flow, and greatly improves the production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machinery technology, specifically relating to a paper packaging machine with an extended upper forming section. Background Technology

[0002] Paper wrapping machines are key pieces of equipment in the packaging industry used to complete processes such as automatic carton forming and bottom folding and sealing (usually by spraying glue or tape). Existing paper wrapping machines typically include an upper forming mechanism and a lower forming mechanism. Through the coordinated action of the upper and lower forming fingers, the upper and lower folds of the carton are clamped and bent to achieve carton pressing and shaping.

[0003] However, traditional paper packaging machine designs have significant shortcomings: First, the upper forming station is usually aligned with the lower forming station at the exit end, and the cartons are released immediately after passing through this station, resulting in limited pressing time. For cartons with high rigidity or strict forming requirements, excessively short pressing time may lead to problems such as fold rebound, unstable forming, and warped corners, affecting the final packaging quality and the stability of subsequent stacking and transportation. Second, due to structural limitations, the next carton can only enter the pressing area after the previous carton has completely left the upper and lower forming finger clamping area. This causes intermittent "stopping" waiting phenomena in the carton flow at the exit conveyor section of the paper packaging machine, resulting in discontinuous conveying and limiting the improvement of the overall production cycle of the equipment, failing to meet the needs of high-efficiency, high-volume production.

[0004] Therefore, there is an urgent need for a paper packaging machine structure that can effectively extend the forming and pressing time on the carton to improve the forming quality, and also achieve continuous and uninterrupted delivery at the export to improve production efficiency. Utility Model Content

[0005] The technical problem solved by this utility model: The purpose of this utility model is to overcome the shortcomings of the prior art and provide a paper packaging machine with an extended upper forming section. This paper packaging machine, by extending the outlet end of the upper forming mechanism and offsetting it to the lower forming mechanism, essentially adds an extended upper forming and pressing station, thereby extending the effective pressing time. Simultaneously, through optimized conveyor connection design, it ensures continuous operation of the carton from the forming station to the outlet conveyor section, solving the problem of "carton stoppage" at the outlet.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A paper packaging machine with an extended upper forming section includes: The upper forming mechanism includes an upper forming drive sprocket, an upper forming driven sprocket, an upper forming chain surrounding the upper forming drive sprocket and the upper forming driven sprocket, and a plurality of upper forming fingers uniformly installed on the upper forming chain; The lower forming mechanism includes a lower forming drive sprocket, a lower forming driven sprocket, a lower forming chain surrounding the lower forming drive sprocket and the lower forming driven sprocket, and a plurality of lower forming fingers uniformly installed on the lower forming chain; The upper forming mechanism is located above the lower forming mechanism, and the two are staggered in the horizontal direction, so that the outlet end of the upper forming mechanism extends in the carton conveying direction relative to the outlet end of the lower forming mechanism to form an upper forming extension section. The lower forming mechanism is provided with a transition roller and an outlet conveyor chain at its outlet end.

[0007] As a further limitation of the above scheme, the lower forming mechanism is also provided with a lower forming chain tensioning wheel for tensioning the lower forming chain.

[0008] Further defining the above solution, the synchronous operation of the upper forming chain and the lower forming chain enables the upper forming finger and the lower forming finger to collaboratively clamp the upper and lower folds of the carton at a set work station.

[0009] As a further limitation of the above scheme, the outlet extension of the upper forming mechanism covers the area above the transition roller, so that when the carton passes through the transition roller, its upper fold is still held by the upper forming finger.

[0010] As a further limitation of the above scheme, the exit extension of the upper forming mechanism extends at least above the starting end of the exit conveyor chain, so that the upper fold of the carton is still held by the upper forming finger during the initial stage of being transferred to the exit conveyor chain.

[0011] As a further limitation of the above scheme, the number of both the upper forming finger and the lower forming finger is at least 7.

[0012] To further define the above scheme, the linear speed of the transition roller is matched with the linear speed of the outlet conveyor chain and synchronized with the linear speed of the upper forming chain to ensure the continuity of carton conveying.

[0013] Further defining the above scheme, the upper forming drive sprocket and the lower forming drive sprocket are driven synchronously by the same drive source through a transmission system, or are driven separately by two independent drive sources with synchronous control functions.

[0014] Advantages of this utility model compared to the prior art: 1. This solution significantly extends the pressing time and improves forming quality: By extending the exit of the upper forming mechanism, the upper fold of the carton continues to be pressured by the upper forming finger for an additional stroke after leaving the lower forming finger. This effectively increases the effective pressing time of the upper forming mechanism, which is beneficial for adhesive curing and fold stress relaxation, ensuring a more stable and flat shape of the carton, especially the upper fold, and effectively avoiding problems such as springback and corner warping. 2. This solution achieves continuous conveying at the outlet, improving production efficiency: Because the upper forming finger continuously clamps and conveys the cartons in the extended section until they are smoothly handed over to the outlet conveyor belt, this means that before the rear end of the previous carton has completely left the collaborative pressing station, the front end of the next carton can already enter the station to begin pressing. The staggered and extended design of the upper and lower stations eliminates the waiting time of cartons at the outlet, allowing the carton flow to be continuously output from the carton wrapping machine, completely solving the "carton stoppage" phenomenon, thereby significantly improving the overall operating cycle and production efficiency of the equipment; 3. This solution has a simple structure, low modification cost, and strong practicality: The core improvement of this utility model lies in the layout optimization and appropriate extension of the existing mature upper forming mechanism, without requiring disruptive changes to the core drive and control system of the paper packaging machine. The lower forming mechanism, transition roller, conveyor chain, etc., are all conventional components. This solution is easy to implement on existing equipment, the modification cost is controllable, and the reliability is high, making it highly practical and worthy of widespread application. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; The labels in the diagram are as follows: 1. Upper forming driven sprocket; 2. Upper forming driving sprocket; 3. Upper forming finger; 4. Lower forming driven sprocket; 5. Lower forming chain tensioner; 6. Lower forming finger; 7. Lower forming driving sprocket; 8. Transition roller; 9. Formed carton; 10. Outlet conveyor chain; 11. Upper forming chain; 12. Lower forming chain. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0019] Please see Figure 1 The embodiments of this utility model are described in detail below.

[0020] like Figure 1 As shown in the figure, the paper packaging machine with an extended upper forming section provided by this utility model embodiment mainly consists of an upper forming mechanism, a lower forming mechanism, a transition roller 8 and an outlet conveyor chain 10.

[0021] The upper forming mechanism includes an upper forming drive sprocket 2 and an upper forming driven sprocket 1 connected by an upper forming chain 11. Multiple upper forming fingers 3 are evenly fixedly mounted on the upper forming chain 11 and move synchronously with the chain.

[0022] The lower forming mechanism includes a lower forming drive sprocket 7 and a lower forming driven sprocket 4 connected by a lower forming chain 12. Multiple lower forming fingers 6 are evenly and fixedly mounted on the lower forming chain 12. A lower forming chain tensioner 5 is installed at an appropriate position on the lower forming chain 12 to adjust and maintain chain tension, ensuring smooth transmission.

[0023] The upper forming mechanism is located above the lower forming mechanism, and the two are staggered in the horizontal direction, so that the outlet end of the upper forming mechanism extends in the carton conveying direction relative to the outlet end of the lower forming mechanism to form an upper forming extension section.

[0024] The lower forming mechanism is provided with a transition roller 8 and an outlet conveyor chain 10 at its outlet end.

[0025] Preferably, the upper forming chain 11 and the lower forming chain 12 operate synchronously, so that the upper forming finger 3 and the lower forming finger 6 can work together to clamp the upper and lower folds of the carton at the set work station.

[0026] Preferably, the exit extension of the upper forming mechanism covers the area above the transition roller 8, so that when the carton passes through the transition roller 8, its upper fold is still held by the upper forming finger 3.

[0027] Preferably, the exit extension of the upper forming mechanism extends at least above the starting end of the exit conveyor chain 10, so that the upper fold of the carton is still held by the upper forming finger 3 during the initial stage of being transferred to the exit conveyor chain 10.

[0028] Preferably, the number of both the upper forming finger 3 and the lower forming finger 6 is at least 7.

[0029] The linear speed of the transition roller 8 is matched with the linear speed of the outlet conveyor chain 10 and synchronized with the linear speed of the upper forming chain 11 to ensure the continuity of carton conveying.

[0030] The upper forming drive sprocket 2 and the lower forming drive sprocket 7 are driven synchronously by the same drive source through the transmission system, or by two independent drive sources with synchronous control function.

[0031] The key layout feature of this utility model is that: the overall installation position of the upper forming mechanism is in the horizontal direction relative to the lower forming mechanism in the carton conveying direction. Figure 1 The upper forming chain 11 shifted to the right by a certain distance. This made the right side (exit side) of the upper forming chain 11 run longer than the right side of the lower forming chain 12, that is, the exit end of the upper forming mechanism was extended.

[0032] On the carton conveying path, after the exit end of the lower forming chain 12, a transition roller 8 and an exit conveyor chain 10 are installed in sequence. The extension section of the upper forming chain 11 runs across the area of ​​the transition roller 8 from above and may selectively partially cover the area above the initial section of the exit conveyor chain 10.

[0033] The working process of this utility model is as follows: The pre-formed cardboard box 9, after being coated with adhesive, is guided into the lower forming station by a conveyor. The running lower forming finger 6 clamps the lower fold of the cardboard box 9 from the front and back, driving it along... Figure 1 Proceeding in the indicated direction. When the carton 9 reaches the position shown in the diagram (i.e., the collaborative pressing station), the synchronously running upper forming chain 11 just happens to drive an upper forming finger 3 to reach above this station and clamp the upper fold of the carton 9. From this point on, the carton 9 enters the pressing and shaping stage, which is jointly performed by the upper and lower forming fingers 3 and 6.

[0034] As the chain continues to move, the carton 9 is clamped and moved forward. When it reaches the end of the lower forming chain 12 (i.e., the exit of the lower forming mechanism), the lower forming finger 6 naturally releases its grip on the lower fold of the carton 9 due to the change in its movement trajectory (entering the sprocket). However, at this time, the upper forming finger 3, which clamps the upper fold, is still in the straight running segment of its chain, so it continues to clamp the carton 9 and drive it forward.

[0035] The bottom of the carton 9 then rests on the transition roller 8, while the upper forming finger 3 continues to provide forward power and downward pressure from above. With the auxiliary support of the transition roller 8, the carton 9 is smoothly fed into the exit conveyor chain 10. In the initial stage when the front end of the carton 9 enters the conveyor chain 10 and begins to be driven by it, the upper forming finger 3 is still not released, thus realizing a "power overlap" handover from the upper forming mechanism to the exit conveyor chain 10, ensuring the continuous and stable speed of the carton.

[0036] Finally, once the carton 9 is stably supported by the exit conveyor chain 10 and reaches the synchronous speed, the upper forming finger 3 holding it moves to the end of the upper forming chain 11 (the end of the extension section), and releases the carton 9 as the chain turns. The well-formed carton 9 is then continuously conveyed by the exit conveyor chain 10 to the subsequent palletizing or packaging processes.

[0037] By adjusting the synchronization of the running speeds of the upper and lower forming chains 11 and 12, as well as the extension length of the upper forming mechanism outlet, the additional pressing time can be flexibly controlled to adapt to the forming process requirements of different types and specifications of cartons.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paper packaging machine with an extended upper forming section, characterized in that: include: The upper forming mechanism includes an upper forming drive sprocket (2), an upper forming driven sprocket (1), an upper forming chain (11) surrounding the upper forming drive sprocket (2) and the upper forming driven sprocket (1), and a plurality of upper forming fingers (3) uniformly installed on the upper forming chain (11). The lower forming mechanism includes a lower forming drive sprocket (7), a lower forming driven sprocket (4), a lower forming chain (12) surrounding the lower forming drive sprocket (7) and the lower forming driven sprocket (4), and a plurality of lower forming fingers (6) uniformly installed on the lower forming chain (12). The upper forming mechanism is located above the lower forming mechanism, and the two are staggered in the horizontal direction, so that the outlet end of the upper forming mechanism extends in the carton conveying direction relative to the outlet end of the lower forming mechanism to form an upper forming extension section. The lower forming mechanism is provided with a transition roller (8) and an outlet conveyor chain (10) at its outlet end.

2. The paper packaging machine with an extended upper forming section according to claim 1, characterized in that: The lower forming mechanism is also provided with a lower forming chain tensioning wheel (5) for tensioning the lower forming chain (12).

3. The paper packaging machine with an extended upper forming section according to claim 1, characterized in that: The synchronous operation of the upper forming chain (11) and the lower forming chain (12) enables the upper forming finger (3) and the lower forming finger (6) to work together to clamp the upper and lower folds of the carton at the set work station.

4. The paper packaging machine with an extended upper forming section according to claim 1, characterized in that: The outlet extension of the upper forming mechanism covers the area above the transition roller (8), so that when the carton passes through the transition roller (8), its upper fold is still held by the upper forming finger (3).

5. The paper packaging machine with an extended upper forming section according to claim 1, characterized in that: The exit extension of the upper forming mechanism extends at least above the starting end of the exit conveyor chain (10), so that the upper fold of the carton is still held by the upper forming finger (3) during the initial stage of being transferred to the exit conveyor chain (10).

6. The paper packaging machine with an extended upper forming section according to claim 1, characterized in that: The number of the upper forming finger (3) and the lower forming finger (6) is at least 7.

7. The paper packaging machine with an extended upper forming section according to claim 1, characterized in that: The linear speed of the transition roller (8) is matched with the linear speed of the outlet conveyor chain (10) and synchronized with the linear speed of the upper forming chain (11) to ensure the continuity of carton conveying.

8. The paper packaging machine with an extended upper forming section according to claim 1, characterized in that: The upper forming drive sprocket (2) and the lower forming drive sprocket (7) are driven synchronously by the same drive source through a transmission system, or by two independent drive sources with synchronous control function respectively.

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