A rubber strip unwinding device

Abstract

The present invention provides a strip unwinding device, which relates to the technical field of strip unwinding, and includes: a bracket; a connecting frame is sleeved on the outer side of the bracket, the connecting frame is fixedly connected with a fixed shaft, the fixed shaft is coaxially rotatably connected with a rotating shaft, and a clamping mechanism for clamping a strip coil is arranged on one side of the connecting frame away from the bracket. The clamping mechanism is fixedly connected with a support housing, a return spring is arranged in the support housing, the return spring is fixedly connected between the support housing and the rotating shaft, a rotating plate is fixedly sleeved on the outer side of the rotating shaft, a friction member is slidably sleeved on the outer side of the fixed shaft, the friction member abuts against the outer side of the rotating plate, and an adjusting nut is threadedly connected to the fixed shaft. Rotating the adjusting nut can squeeze the friction member, thereby changing the friction force between the friction member and the rotating plate. The present invention has the effect of reducing the probability of the phenomenon of excessive strip unwinding and the appearance of redundant strips.

Description

Technical Field

[0001] The invention relates to the technical field of rubber strip unwinding, and in particular to a rubber strip unwinding device. Background Art

[0002] In the production process of doors and windows, rubber strips are used as key sealing materials and are pasted on the edges of doors and windows. The quality and processing of rubber strips directly affect the final performance of the product and user experience. The supply of rubber strips usually relies on special unwinding devices, the core function of which is to stably and efficiently control the release and recovery of rubber strips.

[0003] For example, the Chinese patent with the authorization announcement number CN220316700U and the name of the rubber strip unwinding and storage device, when in use, rubber strip rolls are installed on both material roll installation components. The rubber strip on the first rubber strip roll passes through the active roller, multiple upper rollers and multiple lower rollers with a certain threading process, and is finally attached to other rubber materials. The second rubber strip roll is used as a backup. Through the detection of the storage quantity detection component and the control of the control system, the rubber strip is wound on the upper roller and the lower roller multiple times, and the upper shelf and the lower shelf are separated from each other to realize the storage of the storage component. When the rubber strip is used up, the operator can connect the head of the rubber strip of the second rubber strip roll with the tail of the rubber strip of the first rubber strip roll, so that the production line can continue production using the rubber strip of the second rubber strip roll.

[0004] With regard to the above-mentioned related technologies, during the unwinding process, when the speed of pulling the rubber strip is relatively fast, it is often difficult to accurately control the release amount of the rubber strip due to the inertia caused by the rotation of the rubber strip coil, and excessive unwinding and excess rubber strip are prone to occur. Moreover, when the production task is completed, this section of excess rubber strip cannot automatically return to the rubber strip coil, thereby there is a probability that excess rubber strip will be entangled in the unwinding device, making it difficult to manage the rubber strip, and excess rubber strip will scatter on the ground and stick to dust, thereby reducing the surface quality of the rubber strip, which is not conducive to the rubber strip sealing the edges of doors and windows. Summary of the invention

[0005] In view of this, the present invention provides a rubber strip unwinding device, aiming to solve the problem that it is difficult to accurately control the release amount of the rubber strip, and the excess rubber strip cannot be automatically returned to the rubber strip coil, thereby making it difficult to manage the excess rubber strip.

[0006] To solve the above technical problems, the present invention provides a rubber strip unwinding device, including a bracket; a connecting frame is sleeved on the outer side of the bracket, the connecting frame is fixedly connected with a fixed shaft, the fixed shaft is coaxially rotatably connected with a rotating shaft, a clamping mechanism for clamping a rubber strip roll is arranged on one side of the connecting frame away from the bracket, the clamping mechanism is fixedly connected with a support housing, a reset hairspring is arranged in the support housing, the reset hairspring is fixedly connected between the support housing and the rotating shaft, a rotating plate is fixedly sleeved on the outer side of the rotating shaft, a friction member is slidably sleeved on the outer side of the fixed shaft, the friction member abuts against the outer side of the rotating plate, and an adjusting nut is threadedly connected to the fixed shaft. Rotating the adjusting nut can squeeze the friction member, thereby changing the frictional force between the friction member and the rotating plate.

[0007] By adopting the above technical solution, the rotational friction between the friction member and the rotating plate can slow down the self-rotation of the clamping mechanism, and can reduce the number of turns of the rubber strip roll rotating due to its own inertia during the process of pulling and unwinding the rubber strip, thereby reducing the probability of the phenomenon of excessive unwinding of the rubber strip and the appearance of redundant rubber strips.

[0008] Optionally, the clamping mechanism includes a sleeve, a transmission plate, a connecting rod, a sliding ring, a sliding guide rail, a clamping rod and a fixed rod. The sleeve is fixedly connected to the outer side of the support housing, the transmission plate is slidably connected to the sleeve, the rubber strip roll is sleeved on the outside of the sleeve, the connecting rod is slidably arranged inside the sleeve and fixedly connected to the transmission plate, the sliding ring is slidably connected to the inner side of the sleeve, the sliding guide rail is fixedly connected to the side of the sliding ring, the clamping rod is hinged between the connecting rod and the sliding guide rail, and the clamping rod extends out of the side wall of the sleeve to abut against the inner side of the rubber strip roll, and the fixed rod is fixedly connected to the inner side of the sleeve and hinged to the clamping rod.

[0009] By adopting the above technical solution, when the operator places the rubber strip roll on the sleeve, the clamping rod can press and fix the rubber roll, simplifying the installation steps of the rubber strip roll and improving the efficiency of continuous unwinding of the rubber strip.

[0010] Optionally, a tension spring is fixedly connected between the support housing and the transmission plate.

[0011] By adopting the above technical solution, the tension spring is used to pull the transmission plate towards the support housing. The transmission plate makes the clamping rod have a tendency to rotate outwards of the sleeve through the connecting rod, increasing the fastening force of the clamping rod on the rubber strip roll and improving the stability of the clamping rod for fixing the rubber strip roll.

[0012] Optionally, an unlocking rod is fixedly connected to one end of the connecting rod away from the support housing, and a first handle is fixedly connected to one end of the sleeve away from the support housing.

[0013] Optionally, a locking gear is fixedly sleeved on the outer side surface of the support shell. A locking rod capable of meshing with the locking gear is slidably connected to the connecting frame. A return spring is sleeved on the outer side surface of the locking rod. A driving magnet is fixedly connected to the upper surface of the locking rod. A sliding frame is horizontally slidably connected to the connecting frame. A driving magnet is fixedly connected to the sliding frame. The driving magnet is used to push the driving magnet downward. The locking rod is fixedly connected with a support rod. A first guide rod is rotatably connected to the support rod. A second guide rod is rotatably connected to the connecting frame. The rubber strip is wound around the outer side surfaces of the first guide rod and the second guide rod.

[0014] By adopting the above technical solution, by using the operation of the operator pulling the rubber strip outwards, while realizing the rubber strip unwinding function, the pulled-out rubber strip can be temporarily locked, so that the pulled-out rubber strip is in a free state instead of being pulled back to the bracket, which is beneficial for the operator to paste the rubber strip on the surface of the doors and windows. When the operator finishes the work of pasting the rubber strip, the rubber strip is pulled back to the bracket for resetting.

[0015] Optionally, a locking magnet is fixedly connected to the outer side surface of the connecting frame. An adsorption magnet capable of being adsorbed by the locking magnet is fixedly connected to the sliding frame.

[0016] By adopting the above technical solution, when the locking magnet and the adsorption magnet are in contact, the driving magnet is directly above the driving magnet. At this time, the locking magnet and the adsorption magnet are used to lock the driving magnet to prevent the driving magnet and the driving magnet from shifting in the vertical direction.

[0017] Optionally, the connecting frame can rotate around the bracket and can slide along the bracket. A fastening bolt is threadedly connected to the side wall of the connecting frame.

[0018] Optionally, a universal caster is rotatably connected to the bottom of the bracket.

[0019] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0020] 1. The rotational friction between the friction member and the rotating plate can slow down the self-rotation of the clamping mechanism, and can reduce the number of turns of the rubber strip disk rotating due to its own inertia during the process of pulling and unwinding the rubber strip, thereby reducing the probability of the phenomenon of excessive unwinding of the rubber strip and the appearance of excess rubber strip.

[0021] 2. By using the adjusting nut to change the frictional force between the friction member and the rotating plate, the degree of tension of the reset spring is changed, and further, after the rubber strip is used up, the length of the rubber strip wound back by the rubber strip reel in reverse is changed. According to the distance between the bracket and different working positions of the operator, the length of the rubber strip recovered is adjusted, which not only prevents the phenomenon that the recovery distance of the rubber strip is too short and the excess rubber strip still scatters to the ground or winds around the bracket, but also prevents the phenomenon that the rubber strip is pulled back into the unwinding device when the recovery distance is too long and the operator needs to manually reach into the unwinding device to find the rubber strip during the next processing, simplifies the operation steps of the operator, and is beneficial to the orderly progress of the rubber strip unwinding work.

[0022] 3. When the operator places the rubber strip reel on the sleeve, the clamping rod can press and fix the rubber roll, which simplifies the installation steps of the rubber strip reel and improves the efficiency of continuous unwinding of the rubber strip.

[0023] 4. By using the operation of the operator pulling the rubber strip outwards, while realizing the function of unwinding the rubber strip, the pulled-out rubber strip can be temporarily locked, and the pulled-out rubber strip is in a free state instead of being pulled back to the bracket, which is beneficial for the operator to paste the rubber strip on the surface of the door and window. After the operator completes the work of pasting the rubber strip, the rubber strip is pulled back to the bracket for reset. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 is a schematic diagram of the structure of the connecting frame of an embodiment of the present invention;

[0026] Figure 3 is a cross-sectional view of the internal structures of the support housing and the sleeve of an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of the structure of the clamping mechanism of an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of the structures of the connecting rod, the sliding guide rail and the clamping rod of an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of another perspective of the connecting frame of an embodiment of the present invention.

[0030] Description of the drawing reference numerals: 1, support; 11, connecting frame; 111, locking rod; 112, return spring; 113, drive magnet; 114, second guide rod; 115, locking magnet; 116, first connecting portion; 117, second connecting portion; 12, fixed shaft; 13, rotating shaft; 131, support bearing; 14, support housing; 141, locking gear; 15, return winding spring; 16, rotating plate; 17, friction member; 18, adjusting nut; 19, fastening bolt; 2, rubber strip disk; 3, clamping mechanism; 31, sleeve; 311, first handle; 312, chute; 32, drive plate; 321, tension spring; 322, inner plate; 323, outer plate; 33, connecting rod; 331, unlocking rod; 34, sliding ring; 35, sliding guide rail; 36, clamping rod; 37, fixed rod; 38, rotating pin; 4, sliding frame; 41, drive magnet; 42, support rod; 43, first guide rod; 44, adsorption magnet; 45, second handle; 5, universal caster wheel. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will combine the Figures 1-6 of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0032] This embodiment provides a rubber strip unwinding device. Referring to Figure 1 , Figure 2 and Figure 3 , a rubber strip unwinding device includes a support 1, a connecting frame 11, a fixed shaft 12, a rotating shaft 13, a clamping mechanism 3, a support housing 14, a return winding spring 15, a rotating plate 16, a friction member 17 and an adjusting nut 18.

[0033] Referring to Figure 1 , Figure 2 and Figure 3 , the support 1 stands on the horizontal plane. The connecting frame 11 is sleeved on the outer side of the support 1 and is provided with a plurality of them along the vertical direction. The fixed shaft 12 is horizontally and fixedly connected to the side of the connecting frame 11. The rotating shaft 13 is horizontally rotatably connected to the fixed shaft 12. The clamping mechanism 3 is arranged on the side of the connecting frame 11 away from the support 1. The rubber strip disk 2 is sleeved outside the clamping mechanism 3 and is clamped and fixed by the clamping mechanism 3. The support housing 14 is fixedly connected to the clamping mechanism 3. The support housing 14 is a cylindrical housing. The rotating shaft 13 extends into the support housing 14. The return winding spring 15 is located inside the support housing 14, and both ends of the return winding spring 15 are fixedly connected to the inner side surface of the support housing 14 and the outer side surface of the rotating shaft 13 respectively.

[0034] Reference Figure 2 and Figure 3 Figure 3 , the rotating plate 16 is fixedly sleeved on the outer side of the rotating shaft 13, the rotating plate 16 is rotatably connected to the support housing 14, the friction member 17 is slidably sleeved on the outer side of the fixed shaft 12, the friction member 17 is located between the rotating plate 16 and the connecting frame 11, and the friction member 17 abuts against the rotating plate 16. The adjusting nut 18 is threadedly connected to the fixed shaft 12, and the adjusting nut 18 is located between the friction member 17 and the connecting frame 11. Rotating the adjusting nut 18 can squeeze the friction member 17, so that there is a frictional force for relative rotation between the friction member 17 and the rotating plate 16, and rotating the adjusting nut 18 can change the magnitude of the frictional force between the friction member 17 and the rotating plate 16.

[0035] The operator fastens the rubber strip reel 2 to the clamping mechanism 3, and then pulls the rubber strip to the working position. During the unwinding process of the rubber strip, the clamping mechanism 3 is driven to rotate self - sufficiently, the clamping mechanism 3 drives the support housing 14 to rotate synchronously. During the rotation of the support housing 14, the return spring 15 is gradually tightened, and the tension of the return spring 15 gradually increases until the frictional force between the friction member 17 and the rotating plate 16 is equal to the tension of the return spring 15. Since the rotating shaft 13 is fixedly connected to the rotating plate 16, the support housing 14 drives the rotating shaft 13 and the rotating plate 16 to rotate self - sufficiently through the return spring 15, and the rotating plate 16 rotates relative to the friction member 17 around the rotating shaft 13. After the rubber strip is used up, the return spring 15 pulls the support housing 14 to rotate in the reverse direction, and the support housing 14 drives the rubber strip reel 2 to rotate in the reverse direction through the clamping mechanism 3, so that the rubber strip is retracted near the bracket 1.

[0036] The rotational friction between the friction member 17 and the rotating plate 16 can slow down the self - rotation of the clamping mechanism 3, and can reduce the number of turns of the rubber strip reel 2 rotating due to its own inertia during the pulling and unwinding process of the rubber strip, thereby reducing the probability of the phenomenon of excessive unwinding of the rubber strip and the appearance of excess rubber strip. In addition, since the frictional force between the friction member 17 and the rotating plate 16 is equal to the tension of the return spring 15, the adjusting nut 18 is used to change the magnitude of the frictional force between the friction member 17 and the rotating plate 16, thereby changing the degree to which the return spring 15 is tightened, and further changing the length of the rubber strip retracted by the rubber strip reel 2 in the reverse direction after the rubber strip is used up. According to the distance between the bracket 1 and the different working positions of the operator, the length of the rubber strip recovered is adjusted, which not only prevents the phenomenon that the recovery distance of the rubber strip is too short and the excess rubber strip still scatters to the ground or winds around the bracket 1, but also prevents the phenomenon that the recovery distance of the rubber strip is too long and the rubber strip is pulled back into the unwinding device, and the operator needs to manually reach into the unwinding device to find the rubber strip during the next processing, simplifying the operation steps of the operator and facilitating the orderly progress of the rubber strip unwinding work.

[0037] Reference Figure 1 and Figure 2, the connecting frame 11 can rotate around the support 1 and slide along the support 1. A fastening bolt 19 is threadedly connected to the side wall of the connecting frame 11. By rotating the fastening bolt 19, the connecting frame 11 is fixed to the outer side surface of the support 1. A universal caster 5 is rotatably connected to the bottom of the support 1, enabling the operator to drive the support 1 to move according to the positions of different workstations. After the movement is completed, the universal caster 5 can be locked.

[0038] Refer to Figure 3 , Figure 4 and Figure 5 , the clamping mechanism 3 includes a sleeve 31, a transmission plate 32, a connecting rod 33, a sliding ring 34, a sliding guide rail 35, a clamping rod 36 and a fixing rod 37. The sleeve 31 is arranged at one end of the support housing 14 away from the support 1, and the sleeve 31 is coaxially and fixedly connected to the support housing 14. The transmission plate 32 can slide axially along the sleeve 31. The transmission plate 32 is composed of an inner plate 322 and an outer plate 323 which are fixedly connected to each other. The inner plate 322 is located inside the sleeve 31, and the outer plate 323 is located outside the sleeve 31. The rubber strip disk 2 is sleeved outside the sleeve 31 and abuts against the side surface of the outer plate 323.

[0039] Refer to Figure 3 , Figure 4 and Figure 5 , three connecting rods 33 are provided and fixedly connected to the inner plate 322. The connecting rods 33 are parallel to the sleeve 31 and are circularly arranged around the central axis of the sleeve 31. The sliding ring 34 is located outside the three connecting rods 33 and is slidably connected to the inner side surface of the sleeve 31. Three sliding guide rails 35 are provided and fixedly connected to the side surface of the sliding ring 34. The sliding guide rails 35 and the connecting rods 33 are arranged in one-to-one correspondence along the radial direction of the sleeve 31. Both the connecting rods 33 and the sliding guide rails 35 are provided with waist-shaped slots. The clamping rod 36 is hinged between the connecting rods 33 and the sliding guide rails 35 through the waist-shaped slots. A plurality of clamping rods 36 are arranged along the axial and circumferential directions of the sleeve 31. A chute 312 is opened on the side wall of the sleeve 31. The clamping rod 36 extends out of the sleeve 31 through the chute 312 and abuts against the inner side surface of the rubber strip disk 2. The fixing rod 37 is fixedly connected to the inner side surface of the sleeve 31, and the fixing rod 37 is hinged to the middle part of the clamping rod 36 through a rotating pin 38.

[0040] During the process of the operator installing the rubber strip disk 2 on the clamping mechanism 3, the operator places the rubber strip disk 2 on the sleeve 31 and abuts it against the outer plate 323. The rubber strip disk 2 pushes the outer plate 323 to move closer to the support housing 14. The outer plate 323 pulls the connecting rod 33 to move closer to the support housing 14 through the inner plate 322. During the movement of the connecting rod 33, it drives the clamping rod 36 to rotate counterclockwise around the rotating pin 38 (refer to Figure 5), that is, the clamping rod 36 rotates outward to the outside of the sleeve 31 and abuts against the inner side of the rubber strip disc 2. The operator continues to push the rubber strip disc 2 to increase the fastening force of the clamping rod 36 on the rubber strip disc 2. Thus, while the operator places the rubber strip disc 2 on the sleeve 31, the clamping rod 36 can press and fix the rubber roll, simplifying the installation steps of the rubber strip disc 2 and improving the efficiency of continuous rubber strip unwinding.

[0041] In addition, an air shaft or a mechanical expansion shaft can also be used to fix the rubber strip disc 2. However, when using the air shaft fixing method, an additional external air circuit system needs to be connected to inflate and expand the expansion shaft, which limits the flexibility of the movement of the winding device. Compared with this clamping mechanism 3, the mechanical expansion shaft has a cumbersome operation process. The operator needs to manually twist the handle on the expansion shaft multiple times to achieve the tightening effect, reducing the efficiency of rubber strip unwinding.

[0042] Refer to Figure 3 , the rotating shaft 13 passes through the support housing 14 and enters the sleeve 31, and a support bearing 131 is arranged between the sleeve 31 and the sleeve 31. A tension spring 321 is fixedly connected between the support housing 14 and the transmission plate 32. The tension spring 321 is used to pull the transmission plate 32 towards the support housing 14. The transmission plate 32 makes the clamping rod 36 have a tendency to rotate outward to the outside of the sleeve 31 through the connecting rod 33, increasing the fastening force of the clamping rod 36 on the rubber strip disc 2 and improving the stability of the clamping rod 36 in fixing the rubber strip disc 2.

[0043] Refer to Figure 3 and Figure 4 , a unlocking rod 331 is fixedly connected to one end of the connecting rod 33 away from the support housing 14, and a first handle 311 is fixedly connected to one end of the sleeve 31 away from the support housing 14. The operator hooks the four fingers on the first handle 311 and pushes the unlocking rod 331 towards the inside of the sleeve 31 with the palm. The unlocking rod 331 drives the connecting rod 33 to move close to the transmission plate 32. While the connecting rod 33 moves, it drives the clamping rod 36 to rotate towards the inside of the sleeve 31, so that the clamping rod 36 disengages from the rubber strip disc 2, and thus the rubber strip disc 2 can be removed, and the operation is simple.

[0044] Refer to Figure 2 , Figure 3 and Figure 6, a locking gear 141 is fixedly sleeved on the outer side surface of the support housing 14. The connecting frame 11 is horizontally and fixedly connected with a first connecting portion 116 and a second connecting portion 117. The connecting frame 11 is vertically slidably connected with a locking rod 111 that can mesh with the locking gear 141 through the first connecting portion 116. A return spring 112 is sleeved on the outer side surface of the locking rod 111. A driving magnet 113 is fixedly connected to the upper surface of the locking rod 111. The connecting frame 11 is horizontally slidably connected with a sliding frame 4. The sliding frame 4 is fixedly connected with a driving magnet 41 and a second handle 45. The driving magnet 41 is located directly above the driving magnet 113. The polarities of the opposite inner side surfaces of the driving magnet 113 and the driving magnet 41 are the same. The locking rod 111 is fixedly connected with a support rod 42. The support rod 42 is rotatably connected with a first guide rod 43. The connecting frame 11 is rotatably connected with two second guide rods 114 through the second connecting portion 117. The second guide rods 114 are located above the first guide rod 43, and the two second guide rods 114 are located on both sides of the first guide rod 43. The adhesive tape is wound around the outer side surfaces of the first guide rod 43 and the second guide rods 114. The adhesive tape is located below the first guide rod 43 and above the second guide rods 114.

[0045] When the operator pulls the adhesive tape outwards, the adhesive tape pulls the first guide rod 43 upwards. The first guide rod 43 drives the locking rod 111 to move upwards through the support rod 42, so that the locking rod 111 disengages from the locking gear 141. The driving magnet 113 moves closer to the driving magnet 41. At this time, the support housing 14 can rotate freely, and the operator can continue to pull the adhesive tape outwards. After the adhesive tape is pulled to the required length, the operator releases the adhesive tape. At this time, the non-tightened adhesive tape does not provide an upward pulling force to the first guide rod 43. Thus, the driving magnet 41 pushes the driving magnet 113 downwards, and the locking rod 111 moves synchronously with the driving magnet 113 and meshes with the locking gear 141, thereby restricting the rotation of the locking gear 141. At this time, the return spring 112 is compressed. Thus, the rotation of the support housing 14 is locked, and the return winding spring 15 cannot pull the adhesive tape back to the bracket 1 through the support housing 14. After the adhesive tape is pasted, the operator pulls the second handle 45 to horizontally move the sliding frame 4, so that the driving magnet 41 and the driving magnet 113 are vertically misaligned. The compressed return spring 112 pushes the locking rod 111 upwards, so that the locking rod 111 disengages from the locking gear 141. At this time, the return winding spring 15 can drive the adhesive tape to be pulled back to the bracket 1 through the support housing 14.

[0046] By using the operation of the operator pulling the adhesive tape outwards, while realizing the function of unwinding the adhesive tape, the pulled-out adhesive tape can be temporarily locked, so that the pulled-out adhesive tape is in a free state instead of being pulled back to the bracket 1, which is beneficial for the operator to paste the adhesive tape on the surface of the doors and windows. After the operator finishes pasting the adhesive tape, the adhesive tape is then pulled back to the bracket 1 for reset.

[0047] Reference Figure 6 As shown in Figure 6 , a locking magnet 115 is fixedly connected to the outer side surface of the connecting frame 11, and an adsorption magnet 44 that can be adsorbed by the locking magnet 115 is fixedly connected to the sliding frame 4. When the locking magnet 115 is in contact with the adsorption magnet 44, the driving magnet 41 is located directly above the transmission magnet 113. At this time, the locking magnet 115 and the adsorption magnet 44 are used to lock the driving magnet 41 to prevent the driving magnet 41 and the transmission magnet 113 from shifting in the vertical direction.

[0048] The implementation principle of a rubber strip unwinding device according to an embodiment of the present invention is as follows: An operator places the rubber strip reel 2 on the sleeve 31 and pushes the rubber strip reel 2 to move closer to the transmission plate 32. The transmission plate 32 pulls the connecting rod 33 to move closer to the support housing 14. The connecting rod 33 drives the clamping rod 36 to rotate, causing the clamping rod 36 to rotate outward and open to abut against the inner side surface of the rubber strip reel 2 to fix the rubber strip reel 2.

[0049] When the operator pulls the rubber strip outward, the rubber strip pulls the first guide rod 43 upward. The first guide rod 43 drives the locking rod 111 to move upward through the support rod 42, causing the locking rod 111 to disengage from the locking gear 141. The transmission magnet 113 moves closer to the driving magnet 41. At this time, during the unwinding process of the rubber strip, the clamping mechanism 3 rotates, and the clamping mechanism 3 drives the support housing 14 to rotate synchronously. During the rotation of the support housing 14, the return spring 15 is gradually tightened, and the tension of the return spring 15 gradually increases until the frictional force between the friction member 17 and the rotating plate 16 is equal to the tension of the return spring 15. After the rubber strip is pulled to the required length, the operator releases the rubber strip. The driving magnet 41 pushes the transmission magnet 113 downward, and the locking rod 111 moves synchronously with the transmission magnet 113 to engage with the locking gear 141, thereby restricting the self-rotation of the locking gear 141.

[0050] After the rubber strip is pasted, the operator horizontally moves the sliding frame 4 to displace the driving magnet 41 and the transmission magnet 113 in the vertical direction. The compressed return spring 112 pushes the locking rod 111 upward, causing the locking rod 111 to disengage from the locking gear 141. At this time, the return spring 15 can drive the rubber strip to be pulled back to the bracket 1 through the support housing 14.

[0051] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A rubber strip unwinding device, comprising a bracket, characterized in that: The outer side surface of the bracket is sleeved with a connecting frame, the connecting frame is fixedly connected with a fixed shaft, the fixed shaft is coaxially rotatably connected with a rotating shaft, a clamping mechanism for clamping the rubber strip disc is arranged on a side of the connecting frame away from the bracket, the clamping mechanism is fixedly connected with a supporting shell, a reset spring is arranged in the supporting shell, the reset spring is fixedly connected between the supporting shell and the rotating shaft, a rotating plate is fixedly sleeved on the outer side surface of the rotating shaft, a friction member is slidably sleeved on the outer side surface of the fixed shaft, the friction member abuts against the outer side surface of the rotating plate, an adjusting nut is threadedly connected to the fixed shaft, and the adjusting nut can squeeze the friction member by rotating to change the friction force between the friction member and the rotating plate; The outer side surface of the support shell is fixedly sleeved with a locking gear, the connecting frame is slidably connected with a locking rod that can mesh with the locking gear, the outer side surface of the locking rod is sleeved with a return spring, the upper surface of the locking rod is fixedly connected with a transmission magnet, the connecting frame is horizontally slidably connected with the sliding frame, the sliding frame is fixedly connected with a driving magnet, the driving magnet is used to push the transmission magnet downward, the locking rod is fixedly connected with a support rod, the support rod is rotatably connected with a first guide rod, the connecting frame is rotatably connected with a second guide rod, and the rubber strip is wrapped around the outer sides of the first guide rod and the second guide rod.

2. The adhesive strip unwinding device according to claim 1, characterized in that: The clamping mechanism includes a sleeve, a transmission plate, a connecting rod, a sliding ring, a sliding guide rail, a clamping rod and a fixed rod. The sleeve is fixedly connected to the outer side surface of the supporting shell, the transmission plate is slidably connected to the sleeve, the rubber strip disc is sleeved on the outer side of the sleeve, the connecting rod is slidably arranged inside the sleeve and fixedly connected to the transmission plate, the sliding ring is slidably connected to the inner side surface of the sleeve, the sliding guide rail is fixedly connected to the side surface of the sliding ring, the clamping rod is hinged between the connecting rod and the sliding guide rail, the clamping rod extends out of the side wall of the sleeve to press against the inner side surface of the rubber strip disc, and the fixing rod is fixedly connected to the inner side surface of the sleeve and hinged to the clamping rod.

3. The adhesive strip unwinding device according to claim 2, characterized in that: A tension spring is fixedly connected between the support housing and the transmission plate.

4. The adhesive strip unwinding device according to claim 2, characterized in that: An unlocking rod is fixedly connected to one end of the connecting rod away from the supporting shell, and a first handle is fixedly connected to one end of the sleeve away from the supporting shell.

5. The adhesive strip unwinding device according to claim 1, characterized in that: The outer side surface of the connecting frame is fixedly connected with a locking magnet, and the sliding frame is fixedly connected with an adsorption magnet that can be adsorbed by the locking magnet.

6. The adhesive strip unwinding device according to claim 1, characterized in that: The connecting frame can rotate around the bracket and slide along the bracket, and the side wall of the connecting frame is threadedly connected with a fastening bolt.

7. The adhesive strip unwinding device according to claim 1, characterized in that: The bottom of the bracket is rotatably connected with a universal caster.

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