Plastic Core Detection Device for Stationery Slitting Machine and Stationery Slitting Machine

Abstract

The plastic core detection device of this stationery slitter includes a lower bearing mold with a lower positioning arc surface; an upper flipping and suspended mold with an upper positioning arc surface corresponding to the lower positioning arc surface one by one; the circumferential length of the lower positioning arc surface is greater than the arc circumference of the upper positioning arc surface; a flipping drive mechanism that drives the upper flipping and suspended mold to be buckled on the lower bearing mold so that the lower positioning arc surface and the upper positioning arc surface enclose a circular space for radially locking the plastic core; an inclined space that is inclined on the upper flipping and suspended mold; and the lower side of the inclined space communicates with the circular space, and the inclined space makes one end of the upper positioning arc surface free; a limiting mechanism that is fixed on the upper flipping and suspended mold and contacts the upper side opening of the inclined space, so as to prevent the free end of the upper positioning arc surface from radially contracting inward; a detection component that is arranged on the upper flipping and suspended mold, and after the upper flipping and suspended mold is buckled on the lower bearing mold, the detection component contacts the outer circumferential surface of the plastic core.

Description

Technical Field

[0001] This invention is a divisional application of CN202210027920.7, with an application date of January 11, 2022, a publication date of May 10, 2022, and a publication number of CN114455381A. This invention belongs to the technical field of transparent tape manufacturing machinery, and particularly relates to a plastic core detection device for a stationery slitting machine and a stationery slitting machine. Background Art

[0002] Transparent tape requires a plastic core. As for how to accurately feed the plastic core to the tape winding unit, the current equipment uses manual monitoring. Of course, some inventors have designed a method using sensors to detect whether there is material.

[0003] However, although the above solutions can achieve the purpose of detecting whether there is material, in the existing solutions, the upper die is of a lifting type, and it is necessary to transfer and place the material with the help of a manipulator. The manipulator needs to feed from the side, resulting in low efficiency. In addition, side feeding will cause the plastic core to contact the lower die on one side, resulting in abrasion.

[0004] Secondly, there is a hidden danger of pinching when clamping the plastic core at the detection position. After pinching, there will be protrusions in the innermost winding layer of the subsequent tape, etc. There may also be radial deformation of the plastic core, resulting in poor quality of the tape finished product. Summary of the Invention

[0005] The purpose of this invention is to address the above problems and provide a plastic core detection device for a stationery slitting machine and a stationery slitting machine that can solve the above technical problems.

[0006] To achieve the above purpose, this invention adopts the following technical solutions: The plastic core detection device of this stationery slitting machine includes a lower bearing die with a lower positioning arc surface;

[0007] An upper flipping and suspended die with an upper positioning arc surface corresponding to the lower positioning arc surface one by one;

[0008] The circumferential length of the lower positioning arc surface is greater than the arc circumference of the upper positioning arc surface;

[0009] A flipping drive mechanism that drives the upper flipping and suspended die to be buckled on the lower bearing die so that the lower positioning arc surface and the upper positioning arc surface enclose a circular space for radially locking the plastic core;

[0010] An inclined space is inclinedly arranged on the upper flipping and suspended die; and the lower side of the inclined space is communicated with the circular space, and the inclined space makes one end of the upper positioning arc surface free;

[0011] The limiting mechanism is fixed on the upper flipping and suspended die and contacts the upper side opening of the inclined space, so as to prevent the free end of the upper positioning arc surface from radially contracting inward;

[0012] The detection component is arranged on the upper flipping and suspended die, and contacts the outer circumferential surface of the plastic core after the upper flipping and suspended die is buckled on the lower bearing die.

[0013] In the plastic core detection device of the above-mentioned stationery slitting machine, the device further includes:

[0014] The lateral buckling and self-locking mechanism is arranged between one side of the upper flipping and suspended die where the inclined opening is located and the lower bearing die;

[0015] The concave-convex matching mechanism is arranged between the side of the upper flipping and suspended die far from the inclined opening and the lower bearing die.

[0016] In the plastic core detection device of the above-mentioned stationery slitting machine, the limiting mechanism includes a limiting protective shell arranged on the top of the upper flipping and suspended die, a limiting arm extending downward is connected to the bottom of the limiting protective shell, the limiting arm extends into the upper part of the upper side of the inclined opening, and the abutting surface of the limiting arm abuts against the upper inclined wall of the inclined opening.

[0017] In the plastic core detection device of the above-mentioned stationery slitting machine, the upper inclined wall of the inclined opening has a circular arc convex surface, and the abutting surface of the limiting arm and the circular arc convex surface are tangentially distributed.

[0018] In the plastic core detection device of the above-mentioned stationery slitting machine, the detection component is located in the limiting protective shell, and a through hole communicating with the outside is arranged on the top of the limiting protective shell.

[0019] In the plastic core detection device of the above-mentioned stationery slitting machine, the detection component includes a spring detection rod, a fixed block fixed on the top of the upper flipping and suspended die, and a stepped through hole arranged on the upper flipping and suspended die. The upper end of the spring detection rod penetrates through the positioning hole of the fixed block, and the spring detection rod penetrates downward through the stepped through hole to contact the outer circumferential surface of the plastic core. A spring is sleeved on the spring detection rod. The lower end of the spring acts on the shoulder of the spring detection rod, and the upper end of the spring acts on the lower surface of the fixed block.

[0020] In the plastic core detection device of the above-mentioned stationery slitting machine, the flipping drive mechanism includes a driving swing arm, one end of the driving swing arm has a swing center positioning hole, the other end of the driving swing arm is fixedly connected to the upper flipping and suspended die, and a lifting drive is connected to the middle of the driving swing arm.

[0021] In the plastic core detection device of the above-mentioned stationery slitting machine, the arc circumference of the upper positioning arc surface is greater than the radius of the plastic core, and the arc circumference of the upper positioning arc surface is less than half of the outer circumferential circumference of the plastic core.

[0022] In the plastic core detection device of the above-mentioned stationery slitting machine, the lateral snap-in self-locking mechanism includes a locking buckle, an upper convex block provided at one end of the lower bearing mold located on the lower positioning arc surface. The bottom of the upper flipping and suspended mold is connected by a connecting arm to the locking buckle located on the lower inclined wall of the inclined opening. And the bottom surface of the upper flipping and suspended mold and the locking buckle form a right angle. The locking buckle is buckled on the inner vertical surface of the upper convex block and the bottom surface of the upper flipping and suspended mold fits with the top surface of the upper convex block;

[0023] The concave-convex matching mechanism includes an upper convex part provided at the other end of the lower positioning arc surface. An upper groove is provided at the bottom of the upper flipping and suspended mold. The upper convex part and the upper groove are concave-convex matched.

[0024] This application also provides a stationery slitting machine with the plastic core detection device of the above-mentioned stationery slitting machine.

[0025] Compared with the existing technology, the advantages of the plastic core detection device of this stationery slitting machine are: it can prevent situations such as pinching and radial extrusion deformation of the plastic core during detection to ensure the winding quality of the final tape roll.

[0026] By using the flip-up type, the upper space can be fully utilized, so that the blanking can directly fall from above the lower bearing mold. The efficiency is higher and the blanking avoids phenomena such as abrasion caused by the lateral feeding of the plastic core hitting the lower bearing mold. Brief Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the side view of the detection device provided by the present invention.

[0028] Figure 2 It is Figure 1 a partial structural schematic diagram of

[0029] Figure 3 It is a schematic three-dimensional structural diagram of the detection device provided by the present invention.

[0030] Figure 4 It is a schematic structural diagram of Embodiment 4 provided by the present invention.

[0031] In the figure, lower bearing mold 1, lower positioning arc surface 10, upper convex block 11, upper convex part 12, T-shaped insertion part 14, upper flipping and suspended mold 2, upper positioning arc surface 20, inclined space 21, locking buckle 22, upper groove 23, connecting arm 24, flipping drive mechanism 3, drive swing arm 30, swing center positioning hole 31, lifting drive 32, arc convex surface 210, limiting mechanism 4, limiting protective shell 40, limiting arm 41, through hole 42, sensor 43, detection component 5, spring detection rod 50, fixed block 51, stepped through hole 52, spring 53, shoulder 54, fixed cross beam 6, T-shaped groove 60, plastic core a. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] Embodiment 1

[0034] like Figures 1-3 As shown, the plastic core detection device of the tooling slitting machine includes a lower bearing mold 1, an upper flip suspended mold 2, a flip driving mechanism 3, an inclined space 21, a limit mechanism 4, a detection component 5, a lateral buckling self-locking mechanism and a concave-convex matching mechanism.

[0035] Specifically, the lower bearing mold 1 of this embodiment has a lower positioning arc surface 10, and the lower positioning arc surface 10 is arranged on the top of the lower bearing mold 1. The arc circumference of the lower positioning arc surface 10 is less than half the length of the outer arc circumference of the plastic core a. The arc circumference of the upper positioning arc surface 20 is greater than the radius of the plastic core a, and the arc circumference of the upper positioning arc surface 20 is less than half the outer circumference of the plastic core a. The outer circumference of the plastic core is not completely clamped, which can be applied to the general clamping when there is a difference in the outer circumference diameter due to the processing error of the plastic core.

[0036] The lower positioning arc surface 10 is used to receive the blanking of the plastic core a so as to pre-position the plastic core a.

[0037] Secondly, the lower supporting mold 1 is installed on the fixed beam 6, which is made of aluminum profile. A plurality of T-shaped grooves 60 are respectively arranged in the circumferential direction of the transverse section of the fixed beam 6. At least one T-shaped insertion portion 14 which is inserted into the T-shaped groove on the top surface of the fixed beam 6 is arranged at the bottom of the lower supporting mold 1. The T-shaped insertion portion 14 cooperates with the T-shaped groove to fix the lower supporting mold 1.

[0038] like Figures 1-2 As shown, the upper flip suspended mold 2 has an upper positioning arc surface 20 corresponding to the lower positioning arc surface 10. The upper flip suspended mold 2 can be buckled on the lower bearing mold 1, and the center of the upper positioning arc surface 20 overlaps with the center of the lower positioning arc surface 10.

[0039] The upper positioning arc surface 20 is used to hold the plastic core a at the upper side to constrain the axis of the plastic core a to coincide with the center of the upper positioning arc surface 20 and the center of the lower positioning arc surface 10 .

[0040] In the preferred embodiment, the circumference of the lower positioning arc surface 10 is greater than the circumference of the upper positioning arc surface 20. By utilizing the length difference design, the upper positioning arc surface 20 can prevent the plastic core a from being pinched by pressing down and tightly holding the plastic core a, and can also prevent radial deformation of the plastic core by adaptively adjusting after holding tightly.

[0041] The flipping drive mechanism 3 drives the upper flipping suspended die 2 to be buckled on the lower bearing die 1, so that the lower positioning arc surface 10 and the upper positioning arc surface 20 enclose a circular space for radially locking the plastic core.

[0042] The flipping drive mechanism 3 is utilized, which can facilitate the opening and closing of the upper flipping suspended die 2, so that the plastic core can fall into the lower positioning arc surface 10 in a timely and rapid manner.

[0043] Secondly, the flipping drive can enable the plastic core to fall from the upper side of the lower positioning arc surface 10, so as to reduce the blanking difficulty and further improve the blanking efficiency.

[0044] Specifically, the flipping drive mechanism 3 includes a driving swing arm 30. One end of the driving swing arm 30 has a swing center positioning hole 31. The other end of the driving swing arm 30 is fixedly connected to the upper flipping suspended die 2, and a lifting drive 32 is connected to the middle part of the driving swing arm 30. The lifting drive 32 is a cylinder or an oil cylinder. The swing center positioning hole 31 is fixed on the equipment frame by a rotating shaft, that is, the rotation point of the driving swing arm 30 is always at the swing center positioning hole 31.

[0045] The driving swing arm 30 is L-shaped. One end of the long section of the driving swing arm 30 is connected to the upper flipping suspended die 2, and the connection between the two adopts a bolt method. The swing center positioning hole 31 is arranged on the short section of the driving swing arm 30, while the lifting drive 32 is connected to the middle part of the long section, and the connection between the two adopts a hinge.

[0046] As Figures 1-2 shown, the limiting mechanism 4 is fixed on the upper flipping suspended die 2 and contacts the upper side opening of the inclined space 21, so as to prevent the free end of the upper positioning arc surface 20 from radially contracting inward. The limiting mechanism 4 blocks at the upper side opening of the inclined space 21, and it provides a blocking force to prevent the shrinkage of the free end of the lower positioning arc surface 10, which may cause the radius to be unequal to the radius of the plastic core, resulting in the plastic core being pinched or even forced to deform radially. That is, this structure of the present embodiment can make the radius of the lower positioning arc surface 10 stable and ensure the coincidence degree of the final clamping surface.

[0047] The detection component 5 is arranged on the upper flipping suspended die 2. After the upper flipping suspended die 2 is buckled on the lower bearing die 1, the detection component 5 contacts the outer circumferential surface of the plastic core a. The detection component 5 adopts a contact type of contact method to detect whether there is a plastic core blanking, so as to ensure the continuous progress of subsequent production.

[0048] The lateral snap - locking self - locking mechanism is arranged between one side of the upper flipping suspended mold 2 located in the inclined space 21 and the lower bearing mold 1. Specifically, the lateral snap - locking self - locking mechanism of this embodiment includes a locking buckle 22, an upper convex block 11 arranged on the lower bearing mold 1 at one end of the lower positioning arc surface 10. The bottom of the upper flipping suspended mold 2 is connected with the locking buckle 22 located on the lower inclined wall of the inclined space 21 through a connecting arm 24. And a right angle is formed between the bottom surface of the upper flipping suspended mold 2 and the locking buckle 22. The locking buckle 22 is buckled on the inner vertical surface of the upper convex block 11 and the bottom surface of the upper flipping suspended mold 2 coincides with the top surface of the upper convex block 11.

[0049] By utilizing the synergistic effect of the locking buckle 22, the right angle, and the upper convex block 11, self - locking after flipping can be achieved to remove the remaining locking. In this way, the production efficiency can be greatly improved. At the same time, the locking requirements for detection can also be met.

[0050] Secondly, the concave - convex matching mechanism is arranged between the side of the upper flipping suspended mold 2 far from the inclined space 21 and the lower bearing mold 1. Further, the concave - convex matching mechanism includes an upper convex part 12 arranged at the other end of the lower positioning arc surface 10. An upper groove 23 is arranged at the bottom of the upper flipping suspended mold 2. The upper convex part 12 and the upper groove 23 are in concave - convex matching.

[0051] The concave - convex matching mechanism and the lateral snap - locking self - locking mechanism are distributed relatively with respect to the axis line of the circular space, so that the plastic core can be tightly held.

[0052] Specifically, the limiting mechanism 4 of this embodiment includes a limiting protective shell 40 arranged on the top of the upper flipping suspended mold 2. A limiting arm 41 extending downward is connected to the bottom of the limiting protective shell 40. The limiting arm 41 extends into the upper part of the inclined space 21 and the abutting top surface of the limiting arm 41 abuts against the upper inclined wall of the inclined space 21. There is an arc convex surface 210 on the upper inclined wall of the inclined space 21. The abutting top surface of the limiting arm 41 and the arc convex surface 210 are in a tangential distribution.

[0053] By utilizing the limiting arm 41, a blocking force is provided, which can block the radial shrinkage deformation of the free end of the lower positioning arc surface 10.

[0054] In the tangential manner, it is beneficial for the lower insertion and assembly of the limiting arm 41.

[0055] Specifically, as Figures 1-2As shown, the detection component 5 of this embodiment is located in the limit protection shell 40. A through hole 42 communicating with the outside is provided at the top of the limit protection shell 40 to form protection for the detection component 5. Further, the detection component 5 includes a spring detection rod 50, a fixed block 51 fixed to the top of the upper flipping and suspended mold 2, and a stepped through hole 52 provided on the upper flipping and suspended mold 2. The upper end of the spring detection rod 50 passes through the positioning hole of the fixed block 51, and the spring detection rod 50 penetrates downward through the stepped through hole 52 to contact the outer circumferential surface of the plastic core a. A spring 53 is sleeved on the spring detection rod 50. The lower end of the spring 53 acts on the shoulder 54 of the spring detection rod 50, and the upper end of the spring 53 acts on the lower surface of the fixed block 51.

[0056] The lower end of the spring detection rod 50 has an arc contact convex surface to prevent contacting the plastic core and thus damaging the plastic core.

[0057] The lower orifice of the stepped through hole 52 is located at the arc top of the upper positioning arc surface 20 to facilitate the installation and reset of the spring detection rod 50.

[0058] The design of the stepped through hole 52 can prevent the spring detection rod 50 from disengaging downward from the stepped through hole 52, and an upper limit sleeve is provided in the upper part of the stepped through hole 52. The upper end of the spring 53 acts on the upper limit sleeve so that the spring 53 can be stably limited.

[0059] An inductor 43 is provided in the limit protection shell 40. The upper end of the spring detection rod 50 contacts the inductor 43 under the action of the spring. When the two contact, it indicates that there is a plastic core a, otherwise it is judged that there is no blanking phenomenon.

[0060] In this embodiment, in the blanking state, first, the flipping drive mechanism 3 drives the upper flipping and suspended mold 2 to flip clockwise to a position outside the upper part of the lower bearing mold 1. At this time, there is no blockage above the lower positioning arc surface 10, so blanking can occur without interference.

[0061] Then the flipping drive mechanism 3 drives the upper flipping and suspended mold 2 to flip counterclockwise to the in-place position. At this time, the upper positioning arc surface 20 of the upper flipping and suspended mold 2 holds the outer circumferential upper side surface (partially) of the plastic core, and the upper flipping and suspended mold 2 and the lower bearing mold 1 are locked by using the lateral buckling self-locking mechanism and the concave-convex matching mechanism.

[0062] The lower end of the spring detection rod 50 contacts the top of the outer circumferential surface of the plastic core. At this time, the spring is compressed, and the spring detection rod 50 moves upward to contact the inductor. After the inductor receives the signal of having material, it transmits the signal of having material to the equipment control terminal to ensure the state of having material of the plastic core before the subsequent winding tape.

[0063] Embodiment Two

[0064] The working principle and structure of this embodiment are basically the same as those of the first embodiment. The different structure lies in that the concave-convex matching mechanism has a structure opposite to that of the first embodiment.

[0065] Embodiment Three

[0066] This embodiment provides a stationery slitting machine, which has the plastic core detection device of the stationery slitting machine in the first embodiment or the second embodiment.

[0067] Embodiment Four

[0068] As Figure 4 described, based on the first embodiment, a jacking drive mechanism is provided on the connecting arm 24 of this embodiment and is located on the outer facade of the limiting arm 41. Specifically, the jacking drive mechanism includes a fixed block 25 fixed on the connecting arm 24. A number of drive bolts 26 threadedly connected to the fixed block 25 are inserted through the fixed block 25. The threaded end of the drive bolt 26 abuts against the outer facade of the limiting arm 41. A relaxation gasket or a spring member is provided between the cap end of the drive bolt 26 and the fixed block 25.

[0069] The design of the jacking drive mechanism can push the connecting arm 24 to always abut against the arc convex surface 210, ensuring the limiting resistance of the connecting arm 24.

[0070] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. Plastic core detection device for stationery slitting machine, characterized in that The device includes: A lower bearing mold (1) having a lower positioning arc surface (10); An upper flipping and suspended mold (2) having an upper positioning arc surface (20) corresponding to the lower positioning arc surface (10) one by one; The circumferential length of the lower positioning arc surface (10) is greater than the arc circumference of the upper positioning arc surface (20); A flipping drive mechanism (3) for driving the upper flipping and suspended mold (2) to be buckled on the lower bearing mold (1) so that the lower positioning arc surface (10) and the upper positioning arc surface (20) enclose a circular space for radially locking the plastic core; An inclined space (21) is inclinedly arranged on the upper flipping and suspended mold (2); and the lower side of the inclined space (21) communicates with the circular space, and the inclined space (21) makes one end of the upper positioning arc surface (20) in a free state; A limiting mechanism (4) is fixed on the upper flipping and suspended mold (2) and contacts the upper side opening of the inclined space (21), so as to prevent the free end of the upper positioning arc surface (20) from radially contracting inwards; A detection component (5) is arranged on the upper flipping and suspended mold (2), and after the upper flipping and suspended mold (2) is buckled on the lower bearing mold (1), the detection component (5) contacts the outer circumferential surface of the plastic core (a); The detection component (5) includes a spring detection rod (50), a fixed block (51) fixed to the top of the upper flipping and suspended mold (2), and a stepped through hole (52) arranged on the upper flipping and suspended mold (2). The upper end of the spring detection rod (50) penetrates through the positioning hole of the fixed block (51), and the spring detection rod (50) penetrates downwards through the stepped through hole (52) to contact the outer circumferential surface of the plastic core (a). A spring (53) is sleeved on the spring detection rod (50). The lower end of the spring (53) acts on the shoulder (54) of the spring detection rod (50), and the upper end of the spring (53) acts on the lower surface of the fixed block (51).

2. The plastic core detection device of the stationery slitting machine according to claim 1, characterized in that, The device further includes: A lateral buckling and self-locking mechanism arranged between one side of the upper flipping and suspended mold (2) where the inclined space (21) is located and the lower bearing mold (1); A concave-convex matching mechanism arranged between the other side of the upper flipping and suspended mold (2) away from the inclined space (21) and the lower bearing mold (1).

3. The plastic core detection device of the stationery slitting machine according to claim 1, characterized in that, The flipping drive mechanism (3) includes a driving swing arm (30). One end of the driving swing arm (30) has a swing center positioning hole (31). The other end of the driving swing arm (30) is fixedly connected to the upper flipping and suspended mold (2), and a lifting driver (32) is connected to the middle of the driving swing arm (30).

4. The plastic core detection device of the stationery slitting machine according to claim 1, characterized in that, The arc circumference of the upper positioning arc surface (20) is greater than the radius of the plastic core (a), and the arc circumference of the upper positioning arc surface (20) is less than half of the outer circumferential circumference of the plastic core (a).

5. The plastic core detection device of the stationery slitting machine according to claim 2, characterized in that, The lateral snap-locking self-locking mechanism includes a locking buckle (22), an upper convex block (11) provided on the lower bearing mold (1) at one end of the lower positioning arc surface (10). The bottom of the upper flipping and suspended mold (2) is connected by a connecting arm (24) to the locking buckle (22) located on the lower inclined wall of the inclined space (21). Moreover, a right angle is formed between the bottom surface of the upper flipping and suspended mold (2) and the locking buckle (22). The locking buckle (22) is buckled on the inner vertical surface of the upper convex block (11), and the bottom surface of the upper flipping and suspended mold (2) fits with the top surface of the upper convex block (11). The concave-convex matching mechanism includes an upper convex part (12) provided at the other end of the lower positioning arc surface (10). An upper groove (23) is provided at the bottom of the upper flipping and suspended mold (2). The upper convex part (12) and the upper groove (23) are concave-convex matched.

6. Stationery slitting machine, characterized in that, A plastic core detection device for a stationery slitting machine according to any one of claims 1-5.

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