Punching mechanism for blister forming of blister package

Abstract

The utility model relates to the technical field of packaging, in particular to a punching mechanism for blister forming of blister packaging, which comprises a knife rest, a U-shaped blade is fixedly connected to the bottom of the knife rest, a sliding groove is arranged on the knife rest, a movable blade is matched with the sliding groove in a sliding mode, and the movable blade is arranged on the knife rest. The movable blade is located in the U-shaped blade, and the two ends of the U-shaped blade are attached to the inner wall of the movable blade. A baffle is fixedly connected to the bottom of the tool rest, the movable blade is parallel to the baffle, and a first spring is installed between the movable blade and the baffle. A rotating rod is rotationally connected to the tool rest in a penetrating mode, and a cam is arranged on the rotating rod located below the tool rest. According to the device, the movable blade is arranged in a sliding mode, so that the device can adjust the length of a cutting opening according to requirements; and by means of arrangement of a fourth spring, when the device conducts cutting work, the situation that the U-shaped blade and the movable blade are damaged due to the fact that cutting force applied by the U-shaped blade and the movable blade is too large can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing technical field, concretely relates to a punch -cutting mechanism for blister forming of blister packing. BACKGROUND

[0002] Blister is a kind of plastic processing technology, and its main principle is that flat plastic hard sheet material is heated to be soft, then is vacuum adsorbed on the surface of mould, and is formed after cooling, and is widely used in plastic packaging, lighting, advertising, decoration and other industries.

[0003] The punch -cutting die is a kind of equipment commonly used in the plastic packaging processing, and the punch -cutting die is used to cut the formed blister product to obtain the final product shape. UTILITY MODEL CONTENT

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a punch -cutting mechanism for blister forming of blister packaging to solve the above problems.

[0005] In order to realize the above purpose, the utility model adopts the technical scheme that:

[0006] A punch -cutting mechanism for blister forming of blister packaging, including the knife rest, the bottom of the knife rest is fixedly connected with the U-shaped blade, the sliding slot is set up on the knife rest, the movable blade is slidably connected on the sliding slot, and the movable blade is located in the inside of the U-shaped blade and the two ends of the U-shaped blade are attached to the inner wall of the movable blade;The bottom of the knife rest is fixedly connected with the baffle, the movable blade and the baffle are arranged in parallel, and the first spring is installed between the movable blade and the baffle;Rotary connection is penetrated on the knife rest and is provided with a cam on the rotary rod below the knife rest, and the edge of the cam is attached to the side of the movable blade away from the baffle.

[0007] Preferably, the rotary rod above the knife rest is coaxially fixedly connected with the mounting ring, the outer surface of the mounting ring is coaxially fixedly connected with the ratchet wheel, and a plurality of inclined grooves are formed in the top of the mounting ring.

[0008] Preferably, the top of the knife rest is fixedly connected with the positioning frame, the positioning frame is slidably connected with the guide column, the end of the guide column close to the ratchet wheel is fixedly connected with the L-shaped limit plate, the end close to the ratchet wheel of the L-shaped limit plate is set as a taper, the second spring is sleeved on the guide column between the positioning frame and the L-shaped limit plate, and the taper end of the L-shaped limit plate is embedded in the tooth groove of the ratchet wheel by the second spring abutting against the L-shaped limit plate.

[0009] Preferably, the movable blade is fixedly connected with a positioning block, a slide rod is slidably connected to the positioning block, and a V-shaped pressing strip is arranged, the bottom end of the slide rod is fixedly connected with the V-shaped pressing strip, and a third spring is arranged on the slide rod between the positioning block and the V-shaped pressing strip.

[0010] Preferably, a lifting body is further arranged, a guide rod is vertically and slidably connected to the lifting body, the top of the blade holder is fixedly connected with the bottom end of the guide rod, and a fourth spring is arranged between the blade holder and the lifting body.

[0011] Preferably, the bottom of the lifting body is provided with a first top block and a second top block, the first top block is matched with the chute, the bottom of the second top block is provided with an inclined surface, the second top block is lowered to abut against the L-shaped limiting plate on the inclined surface, the L-shaped limiting plate moves away from the ratchet along the direction of the guide column, and the tapered end of the L-shaped limiting plate is disengaged from the tooth groove of the ratchet.

[0012] Preferably, the top end of the rotating rod penetrates through the lifting body and is provided with an adjusting handle at the end.

[0013] The utility model discloses the beneficial effects are:

[0014] 1. The movable blade is slidably arranged, so that the device can adjust the length of the cutting opening according to the requirements; and the fourth spring is arranged, so that the device can prevent the cutting force of the V-shaped blade and the movable blade from being too large to damage the V-shaped blade and the movable blade during the cutting work.

[0015] 2. During the use of the device, the V-shaped pressing strip first abuts against the top of the plastic suction packaging material, and then the V-shaped pressing strip and the movable blade cut the plastic suction packaging material, so that the cutting stability is high; and after the cutting work is completed, the V-shaped pressing strip automatically moves slightly, thereby pushing the plastic suction packaging material in the cutting opening, so that the connection between the plastic suction packaging material in the cutting opening and the plastic suction packaging material outside the cutting opening is torn, thereby avoiding the situation that there are still a large number of connections between the plastic suction packaging material in the cutting opening and the plastic suction packaging material outside the cutting opening after the cutting work of the device, and thus affecting the subsequent processing of the plastic suction packaging material. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model.

[0017] Figure 2 It is a structural schematic view of the bottom of the blade holder of the utility model.

[0018] Figure 3 It is a sectional view of the utility model.

[0019] Figure 4 It is a structural schematic view of the utility model Figure 3 It is a structural schematic view of the local enlargement of the middle B of the utility model.

[0020] Figure 5 The utility model discloses Figure 3 The structure schematic diagram of partial amplification in A place.

[0021] In the drawing: 1, knife rest;2, N-shaped blade;3, movable blade;4, rotating rod;5, baffle;6, first spring;7, cam;8, ratchet wheel;9, inclined slot;10, positioning frame;11, guide column;12, L-shaped limit plate;13, second spring;14, sliding rod;15, third spring;16, lifting body;17, guide rod;18, fourth spring;19, first jacking block;20, second jacking block;21, adjusting handle;22, positioning block;23, N-shaped pressing strip;24, sliding slot. DETAILED DESCRIPTION

[0022] The following will be referred to reference Figures 1 to 5 The embodiments of the utility model are explained in detail. The person skilled in the art should understand that these embodiments are only used for explaining the technical principles of the utility model, and are not intended to limit the protection scope of the utility model.

[0023] A punching mechanism for blister forming of blister packaging, as shown in Figure 1 and Figure 2 The bottom of the knife rest 1 is fixedly connected with the N-shaped blade 2, the sliding slot 24 is formed in the knife rest 1, the movable blade 3 is slidably connected with the sliding slot 24, the movable blade 3 is located in the inside of the N-shaped blade 2 and the two ends of the N-shaped blade 2 are attached to the inner wall of the movable blade 3;The bottom of the knife rest 1 is fixedly connected with the baffle 5, the movable blade 3 and the baffle 5 are arranged in parallel, and the first spring 6 is installed between the movable blade 3 and the baffle 5;The rotating rod 4 is rotatably connected through the knife rest 1, the cam 7 is arranged on the rotating rod 4 below the knife rest 1, and the edge of the cam 7 is attached to the side of the movable blade 3 away from the baffle 5;When the rotating rod 4 rotates forward, the cam 7 rotates forward and abuts against the movable blade 3, so that the movable blade 3 moves along the direction of the sliding slot 24 and approaches the baffle 5, and the movable blade 3 can slide, so that the device can set the length of the rectangular cutout according to the requirement.

[0024] As shown in Figure 3 and Figure 4As shown, the coaxial fixed connection has an installation ring on the rotating rod 4 above the tool rest 1, the outer surface of the installation ring is coaxially fixedly connected with a ratchet 8, and the top of the installation ring is provided with a plurality of inclined grooves 9; the top of the tool rest 1 is fixedly connected with a positioning frame 10, the positioning frame 10 is slidably connected with a guide column 11, one end of the guide column 11 close to the ratchet 8 is fixedly connected with an L-shaped limiting plate 12, the end close to the ratchet 8 of the L-shaped limiting plate 12 is tapered, a second spring 13 is sleeved on the guide column 11 between the positioning frame 10 and the L-shaped limiting plate 12, and the second spring 13 abuts against the L-shaped limiting plate 12 to make the tapered end of the L-shaped limiting plate 12 engage with the tooth groove of the ratchet 8; through the cooperation of the tapered end of the L-shaped limiting plate 12, the guide column 11 and the second spring 13, when the tapered end of the L-shaped limiting plate 12 engages with the tooth groove of the ratchet 8, the forward rotation of the ratchet 8 will make the L-shaped limiting plate 12 reciprocate along the guide column 11, that is, the tapered end of the L-shaped limiting plate 12 is constantly disengaged and engaged with the tooth groove of the ratchet 8, and the L-shaped limiting plate 12 cannot block the forward rotation of the ratchet 8, but the ratchet 8 cannot be reversely rotated.

[0025] As shown in Figures 3 to 5 , the movable blade 3 is fixedly connected with a positioning block 22, the positioning block 22 is slidably connected with a sliding rod 14, and a V-shaped pressing strip 23 is further included, the bottom end of the sliding rod 14 is fixedly connected with the V-shaped pressing strip 23, and a third spring 15 is sleeved on the sliding rod 14 between the positioning block 22 and the V-shaped pressing strip 23; when the tool rest 1 with the V-shaped blade 2 and the movable blade 3 descends, the V-shaped pressing strip 23 descends, the V-shaped pressing strip 23 first abuts against the top of the plastic suction packaging material, thereby positioning the plastic suction packaging material, and then when the tool rest 1 with the V-shaped pressing strip 23 and the movable blade 3 continues to descend, the plastic suction packaging material is cut (at this time, the V-shaped pressing strip 23 no longer moves, and the third spring 15 is compressed).

[0026] As shown in Figures 1 to 3 , a lifting body 16 is further included, a guide rod 17 is vertically and slidably connected to the lifting body 16, the top of the tool rest 1 is fixedly connected with the bottom end of the guide rod 17, and a fourth spring 18 is installed between the tool rest 1 and the lifting body 16; the lifting body 16 is connected with an external lifting device, for example, a cylinder, and the free end of the cylinder is welded with the lifting body 16; when the external lifting device drives the lifting body 16 to descend, the fourth spring 18 abuts against the tool rest 1 to descend, the V-shaped blade 2 and the movable blade 3 descend and cut the plastic suction packaging material; it should be noted that the fourth spring 18 can be compressed, which can prevent the V-shaped blade 2 and the movable blade 3 from being damaged due to excessive cutting force applied by the V-shaped blade 2 and the movable blade 3.

[0027] As shown in Figure 3 and Figure 4As shown, the bottom of the lifting body 16 is provided with a first top block 19 and a second top block 20, the first top block 19 matches the chute 9; the bottom of the second top block 20 is provided with an inclined surface, the second top block 20 is lowered to the inclined surface to abut against the L-shaped limiting plate 12, the L-shaped limiting plate 12 moves away from the ratchet wheel 8 along the direction of the guide column 11, the tapered end of the L-shaped limiting plate 12 is disengaged from the tooth groove of the ratchet wheel 8, thereby releasing the limiting of the ratchet wheel 8.

[0028] As shown in Figure 1 and Figure 3 As shown, the top end of the rotating rod 4 penetrates the lifting body 16 and is provided with an adjusting handle 21 at the end, through the setting of the adjusting handle 21, it is convenient for the user to rotate the rotating rod 4.

[0029] When the length of the pre-cut needs to be increased, the adjusting handle 21 is rotated forward, the rotating rod 4 rotates the cam 7 forward, the cam 7 abuts against the movable blade 3 to make the movable blade 3 move towards the baffle 5 along the direction of the sliding groove 24 (at the same time, the first spring 6 is compressed to store force), thereby increasing the length of the pre-cut; it should be noted that when the rotating rod 4 rotates forward, the ratchet wheel 8 rotates forward with the rotating rod 4, at this time, the L-shaped limiting plate 12 does not block the rotation of the ratchet wheel 8, and after the ratchet wheel 8 is rotated, the L-shaped limiting plate 12 can limit the position of the ratchet wheel 8, thereby playing a check function on the rotating rod 4 and the cam 7.

[0030] Since the ratchet wheel 8 can only rotate forward, if the user needs to reduce the length of the pre-cut, the cam 7 is quickly rotated forward, the cam 7 is rotated to the lowest point and contacts the movable blade 3 (at this time, the length of the pre-cut is the minimum value), then the cam 7 is slowly rotated forward, the movable blade 3 moves towards the baffle 5 along the direction of the sliding groove 24, the length of the pre-cut is gradually increased, until the cam 7 is stopped after reaching the set length.

[0031] After the length of the pre-cut is adjusted, the external lifting equipment drives the lifting body 16 to descend, the knife holder 1 carries the movable blade 3 and the movable blade 3 to descend, drives the crescent-shaped pressing strip 23 to descend, the crescent-shaped pressing strip 23 first abuts against the top of the plastic suction packaging material, and then the crescent-shaped pressing strip 23 and the movable blade 3 continue to descend and cut the plastic suction packaging material.

[0032] It should be noted that the fourth spring 18 can be compressed, which can prevent the cutting force applied by the crescent-shaped blade 2 and the movable blade 3 from being too large to cause damage to the crescent-shaped blade 2 and the movable blade 3.

[0033] After cutting the plastic suction packaging material, due to factors such as blade quality and plastic suction packaging material material, there may be a small part of the plastic suction packaging material inside the cutting opening still connected with the plastic suction packaging material outside the cutting opening, and not completely separated.

[0034] When the knife holder 1 is lowered to the point that the bottom of the first top block 19 abuts against the inner wall of the inclined groove 9, the rotating rod 4 with the cam 7 is positively rotated in a small range, the movable blade 3 with the amphisarcinous pressing strip 23 moves in the direction of the slide groove 24 to approach the baffle 5 in a small range, the amphisarcinous pressing strip 23 pushes the vacuum packaging material inside the cutting opening, the connection between the vacuum packaging material inside the cutting opening and the vacuum packaging material outside the cutting opening is torn, and a large number of connections between the vacuum packaging material inside the cutting opening and the vacuum packaging material outside the cutting opening after the cutting work of the device is avoided, which influences the subsequent processing of the vacuum packaging material.

[0035] It should be noted that when the knife holder 1 is lowered to the point that the bottom of the first top block 19 abuts against the top surface of the inclined groove 9, the inclined surface of the second top block 20 abuts against the L-shaped limiting plate 12, and the L-shaped limiting plate 12 is away from the ratchet wheel 8 in the direction of the guide column 11, that is, the limiting of the ratchet wheel 8 is released.

[0036] Finally, the external lifting device drives the lifting body 16 to rise, and since the L-shaped limiting plate 12 no longer limits the ratchet wheel 8 at this time, the movable blade 3 moves away from the baffle 5 under the abutting force of the first spring 6, the movable blade 3 is reset, and the cam 7 drives the rotating rod 4 to rotate in the opposite direction, and when the lifting body 16 rises to the point that the bottom of the first top block 19 no longer abuts against the top surface of the inclined groove 9, the inclined surface of the second top block 20 no longer abuts against the L-shaped limiting plate 12 at this time, and the tapered end of the L-shaped limiting plate 12 is re-embedded with the ratchet wheel 8, and the reset of the movable blade 3 is completed, that is, the pre-cut length returns to the set value, which is convenient for the user to perform the next cutting work.

[0037] It should be noted that in the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] Moreover, it needs to be explained that, in the description of the utility model, unless another explicit stipulation and limitation, the term "mount", "link", "connect" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be direct connection, also can indirectly connect through the intermediate medium, can be two elements inside the communication. For the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances. By now, the technical scheme of the utility model has been described in combination with the preferred embodiment shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. The person skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. A punch mechanism for the thermoforming of a blister package, comprising a holder (1) for the punches (2), characterized in that, The bottom of the cutter holder (1) is fixedly connected with a U-shaped blade (2), a sliding groove (24) is formed in the cutter holder (1), and a movable blade (3) is slidably connected to the sliding groove (24), the movable blade (3) is located in the interior of the U-shaped blade (2), and the two ends of the U-shaped blade (2) are attached to the inner wall of the movable blade (3); the bottom of the cutter holder (1) is fixedly connected with a baffle (5), the movable blade (3) is arranged in parallel with the baffle (5), and a first spring (6) is arranged between the movable blade (3) and the baffle (5); a rotating rod (4) is rotatably connected to the cutter holder (1), a cam (7) is arranged on the rotating rod (4) below the cutter holder (1), and the edge of the cam (7) is attached to one side of the movable blade (3) away from the baffle (5).

2. The punch mechanism for the punch of the blister forming of the blister packaging according to claim 1, characterized in that, A mounting ring is fixedly connected coaxially to the rotating rod (4) above the cutter holder (1), a ratchet wheel (8) is fixedly connected coaxially to the outer surface of the mounting ring, and a plurality of inclined grooves (9) are formed in the top of the mounting ring.

3. The punch mechanism for the punch of the blister forming of the blister packaging according to claim 2, characterized in that, A positioning frame (10) is fixedly connected to the top of the cutter holder (1), a guide column (11) is slidably connected to the positioning frame (10), an L-shaped limiting plate (12) is fixedly connected to one end of the guide column (11) close to the ratchet wheel (8), one end of the L-shaped limiting plate (12) close to the ratchet wheel (8) is conical, a second spring (13) is arranged on the guide column (11) between the positioning frame (10) and the L-shaped limiting plate (12), and the second spring (13) abuts against the L-shaped limiting plate (12) to make the conical end of the L-shaped limiting plate (12) engaged with the tooth groove of the ratchet wheel (8).

4. The punch mechanism for blister forming of a blister pack according to claim 1, wherein A positioning block (22) is fixedly connected to the movable blade (3), a sliding rod (14) is slidably connected to the positioning block (22), and a U-shaped pressing strip (23) is further arranged, the bottom end of the sliding rod (14) is fixedly connected with the U-shaped pressing strip (23), and a third spring (15) is arranged on the sliding rod (14) between the positioning block (22) and the U-shaped pressing strip (23).

5. The punch mechanism for blister forming of a blister pack according to claim 3, wherein A lifting body (16) is further arranged, a guide rod (17) is vertically and slidably connected to the lifting body (16), the top of the cutter holder (1) is fixedly connected with the bottom end of the guide rod (17), and a fourth spring (18) is arranged between the cutter holder (1) and the lifting body (16).

6. The punch mechanism for blister forming of a blister pack according to claim 5, wherein First and second top blocks (19) and (20) are arranged at the bottom of the lifting body (16), the first top block (19) is matched with the inclined groove (9), and the bottom of the second top block (20) is provided with an inclined surface, the second top block (20) is lowered to abut against the L-shaped limiting plate (12) on the inclined surface, the L-shaped limiting plate (12) moves away from the ratchet wheel (8) along the guide column (11), and the conical end of the L-shaped limiting plate (12) is disengaged from the tooth groove of the ratchet wheel (8).

7. The punch mechanism for the punch of the blister forming of the blister packaging according to claim 5, characterized in that, The top end of the rotating rod (4) penetrates through the lifting body (16), and an adjusting handle (21) is arranged at the end of the rotating rod (4).

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