Dispensing machine needle roller shaft easy replacement device

Abstract

The utility model provides a kind of needle roller shaft easy replacement device for glue dispenser, comprising: two oppositely arranged fixed plates, two oppositely arranged fixed plate side walls are respectively provided with fixed shaft and needle roller shaft by two groups of oppositely arranged easy replacement components, and the easy replacement component includes: fixed block, movable block, activity bolt and fixed bolt, the front end of fixed plate side wall is fixedly installed with fixed block by 2 fixed bolts, and the top of the rear end of fixed block is detachably installed with movable block by 2 activity bolts.The needle roller shaft easy replacement device for glue dispenser can facilitate the replacement of needle roller shaft.

Description

Technical Field

[0001] This utility model relates to the field of dispensing machine technology, and more specifically, to an easy-to-replace needle roller shaft device for dispensing machines. Background Technology

[0002] Industrial-grade dispensing machines, as crucial equipment in the field of precision fluid control, utilize high-precision actuators to achieve quantitative distribution and precise coating of viscous fluids such as adhesives and inks, playing a key role in electronic packaging, automotive manufacturing, and packaging materials. In the packaging paper production process, this equipment innovatively integrates a dedicated needle roller shaft. Its surface, with a matrix-distributed array of millimeter-level steel needles, forms a directional micropore array on the surface of multi-layer composite packaging materials through a precise piercing process. This innovative process not only optimizes the air permeability of packaging materials but also effectively solves the problem of bag bulging caused by internal and external pressure imbalances during high-speed filling processes, while significantly improving packaging seal integrity and ease of opening.

[0003] The existing needle roller shaft is assembled with the equipment base using an interference fit. When changing the needle roller shaft, operators need to manually disassemble it axially, and a single shaft change operation takes up to 40 minutes. There is also a risk of damage to the mating surfaces due to misalignment. This inefficient changeover method has severely restricted the improvement of the production line's flexible production capabilities. Therefore, there is an urgent need to develop a mechanism with quick changeover and locking to overcome this technical bottleneck.

[0004] This invention facilitates the replacement of needle roller shafts. Summary of the Invention

[0005] The present invention aims to solve the technical problems mentioned in the background art and provide an easy-to-replace needle roller shaft device for dispensing machines.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-replace needle roller shaft device for a dispensing machine, comprising: two opposing fixed plates, wherein a fixed shaft and a needle roller shaft are respectively installed between the side walls of the two opposing fixed plates via two sets of opposing easy-to-replace components, wherein the easy-to-replace components include: a fixed block, a movable block, a movable bolt, and a fixed bolt, wherein a fixed block is fixedly installed at the front end of each side wall of the fixed plate via two fixed bolts, and a movable block is detachably installed at the top rear end of the fixed block via two movable bolts.

[0007] A further preferred embodiment: the fixed shaft and the needle roller shaft are located at the front end and the middle end, respectively, between the side walls of two opposing fixed plates.

[0008] A further preferred embodiment: the fixing block is L-shaped, the front end of the fixing block is provided with a fixing groove, the left and right ends of the fixing shaft pass through the fixing grooves of the left and right fixing blocks respectively and are limited and supported to the fixing plate, and the fixing blocks are fixed to the inner sidewalls of the two fixing plates by two fixing bolts.

[0009] A further preferred embodiment: a semi-circular lower needle roller groove is provided on the upper rear end of the fixed block, the movable block fits into the fixed block, a semi-circular upper needle roller groove is provided on the lower rear end of the movable block, the upper needle roller groove and the lower needle roller groove are spliced ​​together to form a needle roller groove, and two movable bolts movably engage the movable block with the fixed block.

[0010] A further preferred embodiment: Bearings are rotatably installed in both of the left and right needle roller grooves. The left and right ends of the needle roller shaft are respectively installed in the left and right bearings. When the needle roller shaft needs to be removed for replacement, the two movable bolts are unscrewed upwards, the movable block is removed upwards, and the needle roller shaft and bearings are removed upwards. Conversely, the replaced needle roller shaft and bearings are placed in the needle roller groove, and the movable bolts are tightened to lock the movable block and the fixed block, thus completing the replacement of the bearings and needle roller shaft.

[0011] A further preferred embodiment: 6-8 fixing rings are fixedly installed at equal intervals around the outer surface of the needle roller shaft, and several steel needles are fixedly installed at equal intervals around the outer surface of the fixing rings.

[0012] A further preferred embodiment: a piece of paper passes between the needle roller shaft and the fixed shaft, and the paper is pierced with needle holes by steel needles. Beneficial effects

[0013] 1. The system is equipped with easily replaceable components. The fixed block is connected to the fixed plate by fixing bolts. The front fixed groove supports the fixed shaft. The rear lower needle roller groove cooperates with the movable block to install the needle roller shaft, ensuring that the installation position of each shaft is accurate. The movable block and the fixed block fit together to form the needle roller groove. The movable bolts can be detachably connected to facilitate the opening of the needle roller groove when replacing the needle roller shaft. The movable bolts control the connection and separation of the movable block and the fixed block to realize the opening and closing of the needle roller groove, which facilitates the replacement of the needle roller shaft. The fixing bolts firmly fix the fixed block to the fixed plate, ensuring the stability of the entire installation structure.

[0014] 2. A fixed plate serves as the basic support structure for the device, providing an installation platform for the fixed shaft, needle roller shaft, and easily replaceable components, ensuring the stability of the entire device structure. The fixed shaft cooperates with the needle roller shaft to provide support for paper conveying, allowing the paper to pass smoothly between them and facilitating the needle roller shaft's piercing process on the paper. Steel needles are mounted on the surface of the needle roller shaft via a fixed ring. During rotation, the steel needles pierce the paper, forming needle holes, achieving a key operation for optimizing paper performance in the packaging paper production process. The fixed ring is fixed to the outer surface of the needle roller shaft, providing an installation base for the steel needles, ensuring accurate and stable installation positions, and guaranteeing the piercing effect. The steel needles are distributed at different densities on the outer surface of the fixed ring according to user needs, piercing the paper to form a directional micropore array, optimizing the air permeability of the packaging material and solving problems such as bag bulging.

[0015] 3. By incorporating bearings installed within the needle roller groove, with both ends of the needle roller shaft mounted therein, the frictional force during needle roller shaft rotation is reduced, ensuring smooth rotation and improving puncture efficiency;

[0016] 4. In summary, this type of needle roller shaft replacement device for dispensing machines, through the inclusion of easily replaceable components and other structures, facilitates the replacement of the needle roller shaft. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention from a downward viewing angle.

[0019] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This is a three-dimensional structural diagram of the present invention from another perspective.

[0021] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B.

[0022] Figure 6 For the present utility model Figure 4 Enlarged structural diagram at point C.

[0023] Figure 7 This is a three-dimensional structural diagram of the easily replaceable component assembly of this utility model.

[0024] Figure 8 This is an exploded three-dimensional structural diagram of the easily replaceable component of this utility model.

[0025] Figure 1-8In the middle: 1. Fixed plate; 2. Easily replaceable components; 201. Fixed block; 202. Movable block; 203. Movable bolt; 204. Fixed bolt; 3. Fixed shaft; 4. Needle roller shaft; 401. Fixed ring; 402. Steel needle; 403. Bearing; 5. Paper. Detailed Implementation

[0026] The following will refer to the appendix in the embodiments of this utility model. Figures 1-8 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0027] Please see Figure 1-8 In this embodiment of the present invention, a needle roller shaft easy-replacement device for a dispensing machine includes: two opposing fixed plates 1, whose main function is to provide a stable installation support platform for the fixed shaft 3, the needle roller shaft 4, and the easy-replacement components 2. By installing each component between the side walls, the structural stability of the entire device is ensured, providing a reliable foundation for subsequent puncture and other operations; the fixed shaft 3 and the needle roller shaft 4 are respectively installed between the side walls of the two opposing fixed plates 1 through two sets of opposing easy-replacement components 2, which serve to support and position the entire device; the easy-replacement components 2 include: a fixed block 201, a movable block 202, a movable bolt 203, and a fixed bolt 204. The front end of each side wall of the fixed plate 1 is fixedly installed with a fixed block 201 by two fixed bolts 204. The fixed block 201 acts as a bridge connecting the fixed plate 1 with the fixed shaft 3 and the needle roller shaft 4 in the entire device, ensuring the accuracy and stability of the installation position of each shaft; A movable block 202 is detachably mounted on the top rear end of the fixed block 201 via two movable bolts 203. By means of these two movable bolts 203, the movable block 202 can be easily removed when replacing the needle roller shaft 4 by unscrewing the movable bolts 203, thus enabling rapid replacement of the needle roller shaft 4 and greatly improving shaft replacement efficiency. The movable bolts 203, as a key component connecting the movable block 202 and the fixed block 201, allow for connection or separation between the two blocks by tightening or unscrewing. This detachable connection method allows the needle roller groove to open and close flexibly, providing a convenient way to replace the needle roller shaft 4. The fixed bolts 204 firmly fix the fixed block 201 to the side wall of the fixed plate 1, preventing displacement of the fixed block 201 during equipment operation, thereby ensuring that the installation positions of the fixed shaft 3 and the needle roller shaft 4 are always accurate and maintaining the stable operation of the entire device.

[0028] In this embodiment of the utility model, the fixed shaft 3 and the needle roller shaft 4 are located at the front end and the middle end between the side walls of the two opposing fixed plates 1, respectively. This positional layout ensures that the paper 5 can be smoothly pierced by the steel needle 402 on the needle roller shaft 4 when passing between the fixed shaft 3 and the needle roller shaft 4, while ensuring that the entire device has a compact and reasonable structure and that all components work together smoothly.

[0029] In this embodiment of the utility model, the fixing block 201 is L-shaped, and a fixing groove is provided at the front end of the fixing block 201. The left and right ends of the fixing shaft 3 pass through the fixing grooves of the left and right fixing blocks 201 respectively and are limited and supported on the fixing plate 1. The outer walls of the two fixing plates 1 are fixed to the inner walls of the fixing blocks 1 by two fixing bolts 204. The fixing groove at the front end accurately limits and supports the fixing shaft 3, ensuring the stability of the fixing shaft 3. The fixing groove at the front end of the fixing block 201 is like two precise "positioners". After the left and right ends of the fixing shaft 3 pass through the fixing grooves of the left and right fixing blocks 201 respectively, they are stably limited and supported on the fixing plate 1. The outer walls of the fixing plate 1 are firmly fixed to the inner walls by two fixing bolts 204. This double guarantee ensures the stability of the installation of the fixing shaft 3. This stable installation structure provides stable support for the conveying of the paper 5, so that the piercing operation of the needle roller shaft 4 on the paper 5 can be carried out accurately.

[0030] In this embodiment of the utility model, a semi-circular lower needle roller groove is provided at the upper rear end of the fixed block 201. The movable block 202 fits into the fixed block 201. A semi-circular upper needle roller groove is provided at the lower rear end of the movable block 202. The upper needle roller groove and the lower needle roller groove are spliced ​​together to form a needle roller groove. Two movable bolts 203 movably engage the movable block 202 with the fixed block 201. The semi-circular lower needle roller groove at the upper rear end of the fixed block 201 and the upper needle roller groove at the lower rear end of the movable block 202 together form a needle roller groove for installing the needle roller shaft 4. The movable block 202 fits tightly into the fixed block 201. The semi-circular upper needle roller groove at the lower rear end and the lower needle roller groove of the fixed block 201 cooperate to form a complete needle roller groove.

[0031] In this embodiment of the invention, bearings 403 are rotatably installed in both left and right needle roller grooves. The left and right ends of the needle roller shaft 4 are respectively installed in the left and right bearings 403. When the needle roller shaft 4 needs to be removed for replacement, the two movable bolts 203 are unscrewed upwards, the movable block 202 is removed upwards, and the needle roller shaft 4 and bearings 403 are removed upwards. Conversely, the replaced needle roller shaft 4 and bearings 403 are placed in the needle roller groove, and the movable bolts 203 are tightened to lock the movable block 202 and the fixed block 201 together, thus securing the bearings 403 and the needle roller. The replacement of shaft 4 is complete. The bearings 403 installed in the left and right needle roller grooves are installed in the left and right bearings 403 at the left and right ends of the needle roller shaft 4, which greatly reduces the friction when the needle roller shaft 4 rotates, enabling it to rotate at high speed and smoothly, thereby piercing the paper 5 more efficiently. When replacing the needle roller shaft 4, simply unscrew the two movable bolts 203 upwards and remove the movable block 202 to easily remove the needle roller shaft 4 and bearings 403. During installation, the replacement can be completed by reversing the operation, which greatly simplifies the replacement process.

[0032] In this embodiment of the invention, 6-8 fixing rings 401 are fixedly installed at equal intervals around the outer surface of the needle roller shaft 4. These rings ensure that the steel needles 402 are accurately and firmly installed on the needle roller shaft 4, so that the steel needles 402 can remain stable when piercing the paper 5, ensuring the consistency and accuracy of the piercing effect. Several steel needles 402 are fixedly installed at equal intervals around the outer surface of the fixing rings 401. The density of the steel needles 402 can be 12.5*12.5mm or 5*5mm (different styles can be available according to user needs, and the numbers 12.5 or 5 represent the distance between two adjacent steel needles 402). These steel needles 402 are the core components for realizing the innovation of the packaging paper production process. During the rotation of the needle roller shaft 4, they pierce the paper 5 that passes through, forming needle holes, which meets the requirements of the packaging paper for properties such as air permeability.

[0033] In this embodiment of the invention, the paper 5 is the processing object of the entire device, passing through the needle roller shaft 4 and the fixed shaft 3. During this process, the steel needles 402 on the needle roller shaft 4 puncture the paper 5, forming pinholes on its surface, thus completing the key process in the packaging paper production process and optimizing the performance of the packaging paper, such as improving air permeability and solving the problem of bag swelling.

[0034] Working Principle: First, fix the two fixing plates 1 in a relatively opposite position on the dispensing machine to ensure stability and reliability. Then, use two fixing bolts 204 to fix the fixing blocks 201 one by one at the front end of the side wall of the fixing plate 1. The fixing block 201 is L-shaped, with the fixing groove at the front end for subsequent installation of the fixing shaft 3, and the semi-circular lower needle roller groove at the upper rear end to cooperate with the movable block 202 to install the needle roller shaft 4. Pass the left and right ends of the fixing shaft 3 through the fixing grooves at the front ends of the left and right fixing blocks 201 respectively. At this time, the fixing shaft 3 is limited and supported on the fixing plate 1, completing the installation of the fixing shaft 3. The outer walls of the two fixing plates 1 are tightly fixed to the inner walls of the fixing blocks 201 with two fixing bolts 204 to ensure that the fixing shaft 3 is firmly installed and will not shift during subsequent operations. In the lower needle roller grooves at the rear ends of the left and right fixing blocks 201, the bearings 403 are rotatably installed respectively. Then, the left and right ends of the needle roller shaft 4 are installed into the left and right bearings 403 respectively. Then, align the semi-circular upper needle roller groove at the lower rear end of the movable block 202 with the lower needle roller groove at the upper rear end of the fixed block 201 to form a complete needle roller groove. Secure the movable block 202 to the fixed block 201 using two movable bolts 203, completing the installation of the needle roller shaft 4. At this point, the needle roller shaft 4 can rotate flexibly with the support of the bearing 403. Pass the paper 5 to be processed between the needle roller shaft 4 and the fixed shaft 3. Start the relevant drive device of the dispensing machine to drive the needle roller shaft 4 to rotate. Six to eight fixed rings 401 are equidistantly fixed around the outer surface of the needle roller shaft 4. Several steel needles 402 mounted on their outer surface pierce the paper 5 as the needle roller shaft 4 rotates. Depending on production requirements, the density of the steel needles 402 can be different, such as 12.5*12.5mm or 5*5mm, thereby forming the required pinholes on the surface of the paper 5, completing the piercing process in the packaging paper production process. When the needle roller shaft 4 needs to be replaced, first unscrew the two movable bolts 203 upwards, then remove the movable block 202 upwards, at which point the needle roller groove will open. Next, remove the needle roller shaft 4 and the bearings 403 installed at both ends upwards. For the new needle roller shaft 4 to be replaced, follow the installation steps for the needle roller shaft 4: first, install both ends of the new or cleaned and maintained bearings 403, then place it in the needle roller groove. Finally, tighten the movable bolts 203 to lock the movable block 202 and the fixed block 201 together, completing the replacement operation of the needle roller shaft 4. Production can then continue.

Claims

1. A device for easily replacing the needle roller shaft of a dispensing machine, comprising: Two opposing fixed plates (1) are characterized in that: a fixed shaft (3) and a needle roller shaft (4) are respectively installed between the side walls of the two opposing fixed plates (1) by two sets of opposing replaceable components (2). The replaceable components (2) include: a fixed block (201), a movable block (202), a movable bolt (203) and a fixed bolt (204). The front end of the side wall of the fixed plate (1) is fixedly installed with a fixed block (201) by two fixed bolts (204). The rear end top of the fixed block (201) is detachably installed with a movable block (202) by two movable bolts (203).

2. The easy-to-replace needle roller shaft device for a dispensing machine according to claim 1, characterized in that: The fixed shaft (3) and the needle roller shaft (4) are located at the front end and middle end respectively between the side walls of the two opposing fixed plates (1).

3. The easy-to-replace needle roller shaft device for a dispensing machine according to claim 1, characterized in that: The fixing block (201) is L-shaped. The front end of the fixing block (201) is provided with a fixing groove. The left and right ends of the fixing shaft (3) pass through the fixing grooves of the left and right fixing blocks (201) respectively and are limited and supported on the fixing plate (1). The outer side walls of the two fixing plates (1) are fixed to the inner side wall of the fixing plate (1) by two fixing bolts (204).

4. The easy-to-replace needle roller shaft device for a dispensing machine according to claim 1, characterized in that: The fixed block (201) has a semi-circular lower needle roller groove at the upper rear end. The movable block (202) fits into the fixed block (201). The movable block (202) has a semi-circular upper needle roller groove at the lower rear end. The upper needle roller groove and the lower needle roller groove are spliced ​​together to form a needle roller groove. Two movable bolts (203) movably engage the movable block (202) with the fixed block (201).

5. The easy-to-replace needle roller shaft device for a dispensing machine according to claim 4, characterized in that: Bearings (403) are rotatably installed in both of the left and right needle roller grooves. The left and right ends of the needle roller shaft (4) are respectively installed in the left and right bearings (403). When it is necessary to remove the needle roller shaft (4) for replacement, unscrew the two movable bolts (203) upwards, remove the movable block (202) upwards, and remove the needle roller shaft (4) and bearing (403) upwards. Conversely, place the replaced needle roller shaft (4) and bearing (403) in the needle roller groove, and then tighten the movable bolts (203) to lock the movable block (202) and the fixed block (201) to complete the replacement of the bearing (403) and needle roller shaft (4).

6. The easy-to-replace needle roller shaft device for a dispensing machine according to claim 1, characterized in that: The outer surface of the needle roller shaft (4) is fixedly mounted with 6-8 fixing rings (401) at equal intervals, and the outer surface of the fixing rings (401) is fixedly mounted with several steel needles (402) at equal intervals.

7. The easy-to-replace needle roller shaft device for a dispensing machine according to claim 1, characterized in that: Paper (5) passes between the needle roller shaft (4) and the fixed shaft (3), and the paper (5) is pierced with needle holes by steel needles (402).

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