Blister tray cold resistance detection device

Abstract

The application relates to a blister tray cold resistance detection device and relates to the field of blister tray detection equipment. In order to solve the problem that the blister tray is prone to be brittle in a low-temperature environment and affects the transportation effect of products in the blister tray, the scheme comprises a rack, a bending mechanism is installed on one side of the rack, and a collision mechanism is installed on the other side of the rack. The bending mechanism comprises an upper pressing plate, a lower pressing plate and a bending driving assembly. The upper pressing plate and the lower pressing plate are installed on the rack, and a region for placing the blister tray is left between the upper pressing plate and the lower pressing plate. The bending driving assembly is installed on the rack to control the bending of the upper pressing plate and the lower pressing plate. The collision mechanism comprises a reciprocating hammer, a collision driving assembly and a fixed object moving assembly. The fixed object moving assembly is installed on the rack. The collision driving assembly is installed on the rack and is connected with the fixed object moving assembly to drive the fixed object moving assembly. The collision driving assembly is connected with the reciprocating hammer to control the reciprocating hammer to collide with the blister tray on the fixed object moving assembly. The application has the effect of improving the factory qualified rate of the blister tray.

Description

Technical Field

[0001] This application relates to the field of blister tray testing devices, and in particular to blister tray cold resistance testing devices. Background Technology

[0002] Blister trays, also known as blister trays or plastic trays, are made by forming a plastic sheet into a specific groove using a blister forming process. Products are placed in the groove to protect and enhance their appearance. There are also transport-type trays for packaging. The most common use of trays is for convenience.

[0003] However, when blister packs are used in cold regions, they are prone to becoming brittle in low-temperature environments, which can cause them to break during use. This affects the transportation of the products inside the blister packs and results in a low pass rate for the blister packs leaving the factory. Therefore, it is necessary to conduct cold resistance tests on the same batch of blister packs before they are sold to determine whether the batch of blister packs meets the cold resistance requirements of the user at a certain temperature. Summary of the Invention

[0004] In order to improve the pass rate of blister trays leaving the factory, this application provides a cold resistance testing device for blister trays.

[0005] The cold resistance testing device for blister packs provided in this application adopts the following technical solution: A cold resistance testing device for blister packs includes a frame. A bending mechanism is installed on one side of the frame, and an impact mechanism is installed on the other side. The bending mechanism includes an upper pressure plate, a lower pressure plate, and a bending drive assembly. The upper and lower pressure plates are mounted on the frame, with an area between them for placing the blister pack. The bending drive assembly is mounted on the frame to control the bending of the upper and lower pressure plates. The impact mechanism includes a reciprocating hammer, an impact drive assembly, and a stationary moving assembly. The stationary moving assembly is mounted on the frame, and the impact drive assembly is mounted on the frame and connected to the stationary moving assembly to drive it. The impact drive assembly is connected to the reciprocating hammer to control the reciprocating hammer to impact the blister pack on the stationary moving assembly.

[0006] By adopting the above technical solution, the operator places the cryogenically treated blister tray between the upper and lower pressure plates. The bending drive assembly is activated, and the upper and lower pressure plates simultaneously bend multiple times towards the center to test the deformation capacity of the cryogenically treated blister tray. After the bending test, the blister tray is fixed to the stationary moving assembly, and the impact drive assembly is activated. The impact drive assembly drives the stationary moving assembly to move and controls the reciprocating hammer to reciprocate, intermittently impacting the blister tray. Through bending and impact tests, it is determined whether the batch of blister trays meets the user's cold resistance requirements at a certain temperature. Unqualified batches are then retested for cold resistance at other low temperatures, while qualified batches are released to the factory, improving the pass rate of blister trays.

[0007] Optionally, the bending drive assembly includes two drive rods, two drive turntables, several bending rods, a drive component, and a connector. The drive component is mounted on a frame. The two drive turntables are rotatably connected to the frame and are located on both sides of the drive component. Several abutment grooves are provided on the drive turntables along their circumference. The drive component controls the rotation of the two drive turntables respectively. The two drive rods are rotatably connected to the frame and are located on both sides of the drive component. The drive rods are located above the drive turntables on the same side. Two abutment rods are provided on the drive rods. The two abutment rods are symmetrically arranged along the rotation point of the drive rods. The two abutment rods alternately abut against the drive turntables to control the lifting and lowering of the two ends of the drive rods. The two ends of the drive rods are respectively connected to the bending rods, and the bending rods are connected to the upper pressure plate or the lower pressure plate. The connector is connected to the bending rods to control the synchronous bending of the upper pressure plate and the lower pressure plate.

[0008] Optionally, the driving component includes a rope winding reel, a driving rope, a fixed pulley, and a gravity block. The rope winding reel is mounted on the driving turntable and rotates synchronously with the driving turntable. One end of the driving rope is wound on the rope winding reel, and the other end of the driving rope is connected to the gravity block. The fixed pulley is rotatably connected to the frame, and the driving rope rests on the fixed pulley. The fixed pulley is higher than the rope winding reel but lower than the lowest point of the driving rod's lifting and lowering.

[0009] Optionally, the bending drive assembly further includes a locking rod, which is movably mounted on the frame and located on one side of the drive rod rotation connection point. The locking rod can abut against the drive rod to limit the lifting and lowering of both ends of the drive rod.

[0010] Optionally, the connector includes a first connecting rod, a second connecting rod, and a connecting tube. The first connecting rod is connected to a bent rod on the lower pressure plate, and the second connecting rod is connected to a bent rod on the upper pressure plate. The ends of the first and second connecting rods that are close to each other are threaded to both sides of the connecting tube.

[0011] By adopting the above technical solution, the blister pack is removed from the low-temperature environment and placed between the upper and lower pressure plates, with the center of the blister pack positioned at the soft part. The connecting tubes are then screwed together to bring the first and second connecting tubes closer together. Twisting is stopped when both the upper and lower pressure plates are in contact with the end walls of the blister pack. The locking rod is then pulled out to release the lock on the drive rod. At this point, under the weight of the gravity block, the gravity block pulls the drive rope, which winds out from the rope winding disc. The rope winding disc rotates, causing the drive turntable to rotate synchronously. When the tray rotates, the two abutting rods alternately abut against the bottom of the abutting groove. That is, when one abutting rod abuts against the bottom of the abutting groove, the drive rod tilts and descends towards that side, and the other side of the drive rod rises. The lower pressure plate and the upper pressure plate bend upward or downward towards the soft part as the drive rod swings. After bending a specified number of times, the blister tray is removed to observe the condition of the blister tray after bending, in order to determine whether the batch of blister trays meets the requirements for multiple bending under low temperature conditions. If it is qualified, it will enter the next inspection process; if it is unqualified, it will be scrapped. The aforementioned bending mechanism employs a non-powered structure to achieve small-amplitude repeated bending of the blister pack. Simultaneously, a single gravity source controls the bending drive structure on both sides, allowing the drive turntables on both sides of the gravity block to rotate synchronously in opposite directions. This, in turn, causes the upper and lower pressure plates to rotate synchronously in opposite directions, maintaining the smoothness of the bending process and improving the stability, consistency, and standardization of the bending mechanism's operation.

[0012] Optionally, the impact driving assembly includes a limiting frame, a limiting arc ring, a power component, and two limiting rods. The limiting frame is mounted on the frame, and limiting holes are provided on both sides of the limiting frame. The two limiting rods are respectively inserted into the limiting holes on both sides and can reciprocate along the axial direction of the limiting holes. The two limiting rods are connected to both sides of the limiting arc ring. The power component is connected to the limiting arc ring to drive the limiting rods to reciprocate. The reciprocating hammer is connected to the limiting rod near the stationary moving assembly.

[0013] Optionally, the power component includes a power motor, a power rod, and a connecting rod. The power motor is mounted on the frame, and the drive shaft of the power motor is connected to the connecting rod. The end of the connecting rod away from the power motor is connected to the power rod. The axis of the power rod is parallel to but not collinear with the axis of the drive shaft of the power motor. The end of the power rod away from the connecting rod is inserted into the limiting arc ring and moves within the limiting arc ring.

[0014] Optionally, the fixed-object moving assembly includes a moving lead screw, a moving block, a supporting back plate, and a fixed object component. The moving lead screw is rotatably connected to the frame, and the power motor controls the rotation of the moving lead screw. The moving block is threadedly connected to the moving lead screw, and a locking rod is provided on the moving block. The locking rod is parallel to the axis of the moving lead screw. The supporting back plate is installed on the moving block, and the fixed object component is installed on the supporting back plate. The fixed object component fixes the blister tray on the supporting back plate.

[0015] Optionally, the fixing component includes a plurality of fixing rods and a fixing cap. The plurality of fixing rods are installed circumferentially along the support back plate. The fixing rods are installed on the side wall of the support back plate near the reciprocating hammer, and the fixing caps are installed on the side of the fixing rods away from the support back plate.

[0016] By adopting the above technical solution, the blister tray that has passed the bending process is placed on the fixed rod. The power motor starts, the moving screw rotates, and the moving block drives the blister tray to move from one end of the frame to the other. At the same time, the power motor drives the power rod to make a circular motion with the connecting rod as the radius and the power motor as the center. The power rod moves within the limiting arc ring. The side wall of the limiting arc ring limits the movement of the power rod in the length direction of the frame. Therefore, the limiting rod slides back and forth in the limiting hole. The reciprocating hammer intermittently impacts the blister tray. When the support back plate drives the blister tray to move from one end of the frame to the other, the impact test of the blister tray ends. The condition of the blister tray is observed to determine whether the batch of blister trays meets the requirements for multiple impacts under low temperature conditions. If it is qualified, it means that the entire cold resistance test is qualified and can be shipped. If it is unqualified, it is scrapped. The aforementioned impact structure utilizes the same power source and the unique properties of a circle to achieve the effects of reciprocating movement and impact.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. The operator places the cryogenically treated blister tray between the upper and lower pressure plates. The bending drive assembly is activated, and the upper and lower pressure plates simultaneously bend the tray multiple times towards the center to test its deformation capacity. After the bending test, the tray is fixed to the stationary moving assembly, and the impact drive assembly is activated. This assembly drives the stationary moving assembly and controls the reciprocating hammer to reciprocate, intermittently impacting the tray. Through bending and impact tests, it is determined whether the batch of blister trays meets the user's cold resistance requirements at a specific temperature. Unqualified batches are then retested at other low temperatures, while qualified batches are released to the factory, improving the overall yield rate of blister trays. 2. The bending mechanism adopts a non-powered structure to achieve small-amplitude repeated bending of the blister tray. At the same time, a single gravity source is used to control the bending drive structure on both sides, so that the drive turntables on both sides of the gravity block can rotate synchronously in opposite directions. This allows the upper and lower pressure plates to rotate synchronously in opposite directions, maintaining the smoothness of the bending and improving the stability, consistency and standardization of the bending mechanism operation. 3. The impact structure utilizes the same power source and the special properties of a circle to achieve the effect of reciprocating movement and impact. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a cold resistance testing device for a blister tray in an embodiment of this application.

[0019] Figure 2 This is a structural diagram of the hidden side frame in this embodiment of the application, used to illustrate the positional relationship between the bending mechanism and the impact mechanism.

[0020] Figure 3 This is a structural schematic diagram in the embodiments of this application, illustrating the connection relationship between the upper pressure plate, the lower pressure plate, and the bending drive assembly.

[0021] Figure 4 yes Figure 3 An enlarged diagram of A in the diagram.

[0022] Figure 5 This is a structural schematic diagram in the embodiments of this application used to illustrate the connection relationship between the reciprocating hammer, the impact drive assembly, and the stationary moving assembly.

[0023] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Clearance hole; 2. Upper pressure plate; 21. Flexible part; 3. Lower pressure plate; 4. Bending drive assembly; 41. Drive rod; 411. Abutment rod; 42. Drive turntable; 421. Abutment groove; 43. Bending rod; 44. Drive component; 441. Rope winding disc; 442. Drive rope; 443. Fixed pulley; 444. Gravity block; 45. Connector; 451. First connecting rod; 452. Second connecting rod 453. Connecting rod; 46. Locking rod; 5. Reciprocating hammer; 6. Impact drive assembly; 61. Limiting frame; 611. Limiting hole; 62. Limiting arc ring; 63. Power component; 631. Power motor; 632. Power rod; 633. Connecting rod; 64. Limiting rod; 7. Fixed object moving assembly; 71. Moving screw; 72. Moving block; 73. Support back plate; 74. Fixed object; 741. Fixed object rod; 742. Fixed object cap. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0025] This application discloses a cold resistance testing device for blister packs. (Refer to...) Figure 1 and Figure 2 The cold resistance testing device for blister trays includes a frame 1, with a bending mechanism installed on one side and an impact mechanism installed on the other side.

[0026] The bending mechanism includes an upper pressure plate 2, a lower pressure plate 3, and a bending drive assembly 4. The upper pressure plate 2 and the lower pressure plate 3 are mounted on the frame 1, and there is an area between them for placing the blister tray. The bending drive assembly 4 is mounted on the frame 1 to control the upper pressure plate 2 and the lower pressure plate 3 to bend synchronously.

[0027] The impact mechanism includes a reciprocating hammer 5, an impact drive assembly 6, and a stationary moving assembly 7. The stationary moving assembly 7 is mounted on the frame 1. The impact drive assembly 6 is mounted on the frame 1 and connected to the stationary moving assembly 7 to drive the stationary moving assembly 7 to reciprocate along the width direction of the frame 1. The impact drive assembly 6 is connected to the reciprocating hammer 5 to control the reciprocating hammer 5 to intermittently impact the blister pack on the stationary moving assembly 7.

[0028] The operator places the cryogenically treated blister tray between the upper pressure plate 2 and the lower pressure plate 3. The bending drive assembly 4 is activated, and the upper and lower pressure plates 2 and 3 are simultaneously bent multiple times towards the center to test the deformation capacity of the cryogenically treated blister tray. After the bending test, the blister tray is fixed to the stationary moving assembly 7, and the impact drive assembly 6 is activated. The impact drive assembly 6 drives the stationary moving assembly 7 to move and controls the reciprocating hammer 5 to reciprocate, intermittently impacting the blister tray. Through bending and impact tests, it is determined whether the batch of blister trays meets the user's cold resistance requirements at a certain temperature. Unqualified batches are then retested for cold resistance at other low temperatures, while qualified batches are shipped, improving the overall pass rate of the blister trays.

[0029] Reference Figure 2 and Figure 3 The upper pressure plate 2 and the lower pressure plate 3 are connected at the middle of the length of the frame 1, which is the flexible part 21. Both the upper pressure plate 2 and the lower pressure plate 3 can be connected at the flexible part 21, and the two sides of the flexible part 21 can be rotated around the flexible part 21 as the axis. When the blister plate is placed on the upper pressure plate 2 and the lower pressure plate 3, the central axis of the blister plate is located between the flexible part 21 of the upper pressure plate 2 and the flexible part 21 of the lower pressure plate 3.

[0030] Reference Figure 3 The bending drive assembly 4 includes two drive turntables 42 and a drive component 44 for controlling the rotation of the drive turntables 42. Both drive turntables 42 are rotatably connected to the frame 1 and are symmetrically arranged along the flexible part 21. Several abutment grooves 421 are arranged on the drive turntables 42 along their circumference and are arranged in an array along the drive turntables 42.

[0031] The driving component 44 includes a rope winding reel 441, which is coaxially fixed on the driving turntable 42. A driving rope 442 is provided on the rope winding reel 441. In this embodiment, the driving rope 442 is a steel wire rope. One end of the driving rope 442 is fixed on the rope winding reel 441 and wound on the rope winding reel 441. The other end of the driving rope 442 is fixedly connected to a gravity block 444.

[0032] The driving component 44 also includes a fixed pulley 443, which is rotatably connected to the frame 1. The connection point between the fixed pulley 443 and the frame 1 is on the same axis as the flexible part 21. The fixed pulley 443 is installed higher than the rope winding disc 441. Since there are two driving discs 42 in this embodiment, there are two rope winding discs 441, two driving ropes 442, and two fixed pulleys 443 in this embodiment. The two fixed pulleys 443 are coaxially arranged, and the two driving ropes 442 are wound around the corresponding fixed pulleys 443 from both sides. The two driving ropes 442 are connected to the same gravity block 444. Under the action of gravity block 444, gravity block 444 pulls drive rope 442, drive rope 442 moves in the direction of gravity block 444, drive rope 442 on rope reel 441 is unwound, rope reel 441 rotates and drives drive turntable 42 to rotate.

[0033] Reference Figure 3 Each drive turntable 42 is provided with a drive rod 41 above it. The length direction of the drive rod 41 is parallel to the length direction of the frame 1. The drive rod 41 is rotatably connected to the frame 1. The connection point between the drive rod 41 and the frame 1 is the midpoint of the length direction of the drive rod 41. The connection point between the drive rod 41 and the frame 1 is on the same vertical line as the connection between the drive turntable 42 and the frame 1.

[0034] The drive rod 41 is fixedly connected to two abutment rods 411 on both sides of its connection point with the frame 1. The distance between the two abutment rods 411 is greater than the maximum diameter of the abutment groove 421 and less than the maximum diameter of the two abutment grooves 421. The maximum distance between the connection point of the abutment rod 411 with the frame 1 and the bottom of the abutment groove 421 is greater than the length of the abutment rod 411. The minimum distance between the connection point of the abutment rod 411 with the frame 1 and the bottom of the abutment groove 421 is less than the length of the abutment rod 411. When the drive turntable 42 rotates, the two abutment rods 411 alternately abut against the bottom of the abutment groove 421. That is, when one abutment rod 411 abuts against the bottom of the abutment groove 421, the drive rod 41 tilts and descends towards that side, and the other side of the drive rod 41 is raised.

[0035] A locking rod 46 is also provided on the frame 1. In this embodiment, the length direction of the locking rod 46 is consistent with the width direction of the frame 1. One end of the locking rod 46 extending out of the frame 1 can abut against the drive rod 41 to limit the swing of the drive rod 41. Moving the locking rod 46 away from the drive rod 41 can release the restriction on the drive rod 41.

[0036] Reference Figure 3 and Figure 4Each end of the drive rod 41 is provided with a bending rod 43. In this embodiment, the end of the drive rod 41 is integrally formed with a short rod, which is inserted into the lower pressure plate 3 and connected to the bending rod 43. The bending rod 43 is perpendicular to the drive rod 41, and the length direction of the bending rod 43 is parallel to the width direction of the frame 1. The bending rod 43 passes through the lower pressure plate 3 and also passes through the upper pressure plate 2. The bending rods 43 on the same vertical line of the upper pressure plate 2 and the lower pressure plate 3 are connected by a connector 45 to control the upper pressure plate 2 and the lower pressure plate 3 to bend synchronously. The frame 1 is provided with a clearance hole 11 for the end of the bending rod 43 to move up and down. The bending rods 43 on the same drive rod 41 are all inserted on the same side of the flexible part 21.

[0037] The connector 45 includes a first connecting rod 451, a second connecting rod 452, and a connecting pipe 453. The first connecting rod 451 and the bent rod 43 on the lower pressure plate 3 are fixed by welding. The first connecting rod 451 is perpendicular to the bent rod 43. The second connecting rod 452 and the bent rod 43 on the upper pressure plate 2 are fixed by welding. The second connecting rod 452 is perpendicular to the bent rod 43, and the first connecting rod 451 and the second connecting rod 452 are facing each other. The two ends of the connecting pipe 453 are respectively threaded to the end of the first connecting rod 451 away from the lower pressure plate 3 and the end of the second connecting rod 452 away from the upper pressure plate 2. Twisting the connecting pipe 453 can make the first connecting rod 451 and the second connecting rod 452 move closer or further apart.

[0038] Reference Figure 5 The fixed object moving assembly 7 includes a moving screw 71, the two ends of which are rotatably connected to the frame 1. A locking rod 46 is provided on one side of the moving screw 71, and the two ends of the locking rod 46 are fixed to the frame 1. A moving block 72 is threadedly connected to the moving screw 71, and the locking rod 46 is also passed through the moving block 72.

[0039] The top wall of the movable block 72 is connected to a support back plate 73. A fixing element 74 is provided on the support back plate 73 to position the blister tray. The fixing element 74 includes a plurality of fixing rods 741. The plurality of fixing rods 741 are welded and fixed along the circumference of the support back plate 73. A fixing cap 742 is sleeved on the end of the fixing rod 741 away from the support back plate 73. In this embodiment, the fixing cap 742 is made of silicone. The fixing rods 741 are inserted into the grooves on the side of the blister tray, and the fixing cap 742 is interference-fitted with the blister tray.

[0040] Reference Figure 5 The impact drive assembly 6 includes a power component 63, which includes a power motor 631. The power motor 631 is fixed to the frame 1 by bolts, and the drive shaft of the power motor 631 drives the moving lead screw 71 to rotate via a belt.

[0041] The drive shaft of the power motor 631 passes through the frame 1 and is vertically connected to the connecting rod 633. The end of the connecting rod 633 away from the power motor 631 is vertically welded to the power rod 632. The length direction of the power rod 632 is consistent with the axis direction of the drive shaft of the power motor 631.

[0042] A limiting arc ring 62 is fitted on the power rod 632. The limiting arc ring 62 is a semi-circular arc ring. The virtual circle diameter of the limiting arc ring 62 is equal to the virtual circle diameter of the path of the power rod 632. A limiting rod 64 is integrally formed on both sides of the limiting arc ring 62. The axes of the two limiting rods 64 are on the same straight line, and the axis passes through the center of the virtual circle of the limiting arc ring 62.

[0043] In this embodiment, a roller is rotatably connected to one end of the power rod 632 located on the limiting arc ring 62, so that the power rod 632 can move within the limiting arc ring 62 and reduce the friction of the power rod 632 on the limiting arc ring 62.

[0044] Reference Figure 5 The frame 1 is also equipped with a limit frame 61. Limit holes 611 are opened on both sides of the limit frame 61. The axial direction of the limit holes 611 is parallel to the length direction of the frame 1. Two limit rods 64 are respectively inserted into the limit holes 611. At this time, the limit arc ring 62 is located between the two limit holes 611. The side wall of the limit hole 611 restricts the limit rods 64, so that the limit rods 64 can only move back and forth along the axial direction of the limit hole 611.

[0045] The power motor 631 drives the power rod 632 to make circular motion with the connecting rod 633 as the radius and the power motor 631 as the center. The power rod 632 moves within the limiting arc ring 62. The side wall of the limiting arc ring 62 limits the movement of the power rod 632 in the length direction of the frame 1. Therefore, the limiting rod 64 slides back and forth within the limiting hole 611.

[0046] Reference Figure 5 A reciprocating hammer 5 is installed on the limiting rod 64 near the support back plate 73. The reciprocating hammer 5 intermittently impacts the blister tray installed on the support back plate 73 during the reciprocating movement of the limiting rod 64. Based on the set number of impacts, it is determined whether the blister tray is qualified after the impact test.

[0047] The implementation principle of the cold resistance testing device for blister trays in this application embodiment is as follows: the operator places the blister tray to be tested in a low-temperature environment and allows the blister tray to warm up in the low-temperature environment for a specified time.

[0048] Remove the blister pack from the low-temperature environment and place it between the upper pressure plate 2 and the lower pressure plate 3. The center of the blister pack should be positioned at the soft part 21. Twist the connecting tube 453 to bring the first and second connecting tubes closer together. Stop twisting when both the upper and lower pressure plates 2 and 3 are in contact with the end walls of the blister pack. Pull out the locking rod 46 to release the lock on the drive rod 41. Under the weight of the gravity block 444, the gravity block 444 pulls the drive rope 442, which winds out from the rope winding disc 441. The rope winding disc 441 rotates, causing the drive turntable 42 to rotate synchronously. When the rotating turntable 42 rotates, the two abutting rods 411 alternately abut against the bottom of the abutting groove 421. That is, when one abutting rod 411 abuts against the bottom of the abutting groove 421, the driving rod 41 tilts and descends towards that side, and the other side of the driving rod 41 is raised. The lower pressure plate 3 and the upper pressure plate 2 bend upward or downward towards the soft part 21 as the driving rod 41 swings. After bending a specified number of times, the blister tray is removed to observe the condition of the blister tray after bending, in order to determine whether the batch of blister trays meets the requirements for multiple bending under low temperature conditions. If it is qualified, it will enter the next inspection process; if it is unqualified, it will be scrapped.

[0049] After the blister tray passes the bending process, it is placed on the fixed rod 741. The power motor 631 starts, the moving screw 71 rotates, and the moving block 72 drives the blister tray from one end of the frame 1 to the other end. At the same time, the power motor 631 drives the power rod 632 to make a circular motion with the connecting rod 633 as the radius and the power motor 631 as the center. The power rod 632 moves within the limiting arc ring 62. The side wall of the limiting arc ring 62 limits the movement of the power rod 632 in the length direction of the frame 1. Therefore, the limiting rod 64 slides back and forth in the limiting hole 611. The reciprocating hammer 5 intermittently impacts the blister tray. When the support back plate 73 drives the blister tray to move from one end of the frame 1 to the other end, the impact test of the blister tray ends. The condition of the blister tray is observed to determine whether the batch of blister trays meets the requirements for multiple impacts under low temperature conditions. If it passes, it means that the entire cold resistance test is qualified and can be shipped. If it fails, it is scrapped.

[0050] If a batch of samples fails the cold resistance test at a certain temperature, the same batch can be tested at other low temperatures and sold to suppliers with different requirements at different prices; qualified batches are released from the factory, which improves the pass rate of blister trays.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cold resistance testing device for blister trays, characterized in that: Includes a frame (1), a bending mechanism is installed on one side of the frame (1), and an impact mechanism is installed on the other side of the frame (1); The bending mechanism includes an upper pressure plate (2), a lower pressure plate (3) and a bending drive assembly (4). The upper pressure plate (2) and the lower pressure plate (3) are mounted on the frame (1), and there is a space between them for placing the blister tray. The bending drive assembly (4) is mounted on the frame (1) to control the bending of the upper pressure plate (2) and the lower pressure plate (3). The impact mechanism includes a reciprocating hammer (5), an impact drive assembly (6), and a stationary moving assembly (7). The stationary moving assembly (7) is mounted on the frame (1). The impact drive assembly (6) is mounted on the frame (1) and connected to the stationary moving assembly (7) to drive the stationary moving assembly (7). The impact drive assembly (6) is connected to the reciprocating hammer (5) to control the reciprocating hammer (5) to impact the blister tray on the stationary moving assembly (7). The bending drive assembly (4) includes two drive rods (41), two drive turntables (42), several bending rods (43), a drive component (44), and a connecting component (45). The drive component (44) is mounted on the frame (1). The two drive turntables (42) are rotatably connected to the frame (1) and are arranged on both sides of the drive component (44). Several abutment grooves (421) are arranged on the drive turntables (42) along their circumference. The drive component (44) controls the rotation of the two drive turntables (42) respectively. Both drive rods (41) are rotatably connected to the frame (1) and are arranged on both sides of the drive member (44). The drive rods (41) are arranged above the drive turntable (42) on the same side. Two abutting rods (411) are provided on the drive rods (41). The two abutting rods (411) are symmetrically arranged along the rotation point of the drive rods (41). The two abutting rods (411) alternately abut against the drive turntable (42) to control the lifting and lowering of the two ends of the drive rods (41). The two ends of the drive rod (41) are respectively connected to the bending rod (43), and the bending rod (43) is connected to the upper pressure plate (2) or the lower pressure plate (3); the connector (45) is connected to the bending rod (43) to control the upper pressure plate (2) and the lower pressure plate (3) to bend synchronously.

2. The cold resistance testing device for blister packs according to claim 1, characterized in that: The driving component (44) includes a rope winding disc (441), a driving rope (442), a fixed pulley (443) and a gravity block (444). The rope winding disc (441) is mounted on the driving turntable (42) and rotates synchronously with the driving turntable (42). One end of the drive rope (442) is wound on the rope reel (441), and the other end of the drive rope (442) is connected to the gravity block (444). The fixed pulley (443) is rotatably connected to the frame (1). The drive rope (442) is laid on the fixed pulley (443). The fixed pulley (443) is higher than the rope reel (441) and lower than the lowest point of the drive rod (41) when it is raised or lowered.

3. The cold resistance testing device for blister packs according to claim 2, characterized in that: The bending drive assembly (4) also includes a locking rod (46), which is movably mounted on the frame (1). The locking rod (46) is located on one side of the rotation connection point of the drive rod (41). The locking rod (46) can abut against the drive rod (41) to limit the lifting and lowering of both ends of the drive rod (41).

4. The cold resistance testing device for blister packs according to claim 1, characterized in that: The connector (45) includes a first connecting rod (451), a second connecting rod (452), and a connecting tube (453). The first connecting rod (451) is connected to the bent rod (43) on the lower pressure plate (3), and the second connecting rod (452) is connected to the bent rod (43) on the upper pressure plate (2). The ends of the first connecting rod (451) and the second connecting rod (452) that are close to each other are threaded to both sides of the connecting tube (453).

5. The cold resistance testing device for blister packs according to claim 1, characterized in that: The impact drive assembly (6) includes a limiting frame (61), a limiting arc ring (62), a power component (63), and two limiting rods (64). The limiting frame (61) is mounted on the frame (1). Limiting holes (611) are provided on both sides of the limiting frame (61). The two limiting rods (64) are respectively inserted into the limiting holes (611) on both sides and can reciprocate along the axial direction of the limiting holes (611). The two limiting rods (64) are connected to both sides of the limiting arc ring (62), the power component (63) is connected to the limiting arc ring (62) to drive the limiting rods (64) to reciprocate, and the reciprocating hammer (5) is connected to the limiting rod (64) near the stationary moving component (7). The power component (63) includes a power motor (631), a power rod (632), and a connecting rod (633). The power motor (631) is mounted on the frame (1). The drive shaft of the power motor (631) is connected to the connecting rod (633). The end of the connecting rod (633) away from the power motor (631) is connected to the power rod (632). The axis of the power rod (632) is parallel to but not collinear with the axis of the drive shaft of the power motor (631). The end of the power rod (632) away from the connecting rod (633) is inserted into the limiting arc ring (62) and moves within the limiting arc ring (62).

6. The cold resistance testing device for blister packs according to claim 5, characterized in that: The fixed object moving assembly (7) includes a moving screw (71), a moving block (72), a support back plate (73), and a fixed object (74). The moving screw (71) is rotatably connected to the frame (1). The power motor (631) controls the rotation of the moving screw (71). The moving block (72) is threadedly connected to the moving screw (71). A locking rod (46) is provided on the moving block (72). The locking rod (46) is parallel to the axis of the moving screw (71). The support back plate (73) is mounted on the movable block (72), and the fixing component (74) is mounted on the support back plate (73). The fixing component (74) fixes the blister tray on the support back plate (73).

7. The cold resistance testing device for blister packs according to claim 6, characterized in that: The fixing component (74) includes a plurality of fixing rods (741) and a fixing cap (742). The plurality of fixing rods (741) are installed circumferentially along the support back plate (73). The fixing rods (741) are installed on the side wall of the support back plate (73) near the reciprocating hammer (5). The fixing cap (742) is installed on the side of the fixing rods (741) away from the support back plate (73).

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