Clamping opening force test fixture for blister product and use method thereof

Abstract

The invention relates to the technical field of mechanical tools, and discloses a clamping opening force testing clamp for a blister product and a using method of the clamping opening force testing clamp. The test fixture comprises a lower fixture and an upper fixture, the lower fixture is arranged on a machine table, the upper fixture is connected with a tensile joint of a universal test machine, the lower fixture is provided with a lower guide rail groove and a first clamping groove, and the lower fixture is provided with a second clamping groove. According to the test fixture, the product is pushed into the lower jig along the lower guide rail groove of the lower jig, and the first convex edge of the tray is inserted into the first insertion groove of the lower jig, so that the tray is fixed on the lower jig; the second convex edge of the upper cover is inserted into the second clamping groove of the upper jig, so that the upper cover is fixed on the upper jig, and a product is convenient to clamp and fix; the universal testing machine pulls the upper jig and the upper cover to move upwards until the upper cover is separated from the tray, the pulling force value when the upper cover is separated from the tray is the clamping opening and closing force of the upper cover and the tray, the product clamping efficiency is high, the force value transmission is accurate, and the detection precision is high.

Description

Technical Field

[0001] This invention relates to the field of mechanical tooling technology, specifically to a clamping opening force testing fixture for thermoforming products and its usage method. Background Technology

[0002] The company's Tray blister packaging products include a tray and a lid. After the packaged items are placed into the tray of the Tray, the lid closes on the tray to seal it.

[0003] This tray blister box product has requirements for the clamping and opening force between the top cover and the tray after the top cover is closed. Therefore, after the product is blister formed, a testing machine is needed to test the clamping and opening force between the top cover and the tray.

[0004] The inventors of this application have discovered that, currently, when testing the clamping and opening force of blister pack products, the product is inconvenient to clamp and fix, the clamping efficiency is low, and the testing accuracy is poor. Summary of the Invention

[0005] The purpose of this invention is to provide a clamping opening force testing fixture for blister packaging products and its usage method, so as to solve the problems in the background art mentioned above.

[0006] This invention provides a clamping opening force testing fixture for blister packaging products. The product includes a tray and a top cover, the tray and the top cover respectively having a first protruding edge and a second protruding edge, and includes a lower fixture and an upper fixture. The lower fixture is mounted on the machine platform of the universal testing machine, and the upper fixture is located above the lower fixture and is connected to the tensile joint of the universal testing machine through a force transmission rod. The lower fixture is provided with a lower guide rail groove and a first snap-fit ​​groove, and the lower guide rail groove is adapted to the tray. The lower fixture is provided with a second locking groove; The product is inserted into the lower fixture along the lower guide groove, located between the lower fixture and the upper fixture, with the first protruding edge and the second protruding edge respectively inserted into the first snap-fit ​​groove and the second snap-fit ​​groove, and the lower fixture, the upper fixture, the force transmission rod and the central axis of the product coincide with each other; The universal testing machine is used to pull the top cover to separate it from the tray, and to record the pulling force when the top cover separates from the tray.

[0007] Based on the above scheme, it can be seen that the clamping opening force testing fixture for thermoformed products of the present invention is provided with a lower fixture and an upper fixture. The lower fixture is set on the machine base of the universal testing machine, and the upper fixture is connected to the tensile joint of the universal testing machine through a force transmission rod. The lower fixture is provided with a lower guide rail groove and a first locking groove, and the lower fixture is provided with a second locking groove. The central axes of the lower fixture, the upper fixture and the force transmission rod coincide with each other. The clamping opening force testing fixture for blister packaging products of the present invention, in use, pushes the product tray into the lower fixture along the lower guide groove of the lower fixture. After the product is fully pushed in, the left and right sides and the rear side of the first protruding edge of the tray are inserted into the first insertion groove of the lower fixture, fixing the tray on the lower fixture; at the same time, the left and right sides and the rear side of the second protruding edge of the upper cover are inserted into the second locking groove of the upper fixture, fixing the upper cover on the upper fixture, making product clamping and fixing convenient; then the universal testing machine pulls the upper fixture upward, the upper fixture drives the upper cover upward until the upper cover separates from the tray. The universal testing machine records the pulling force when the upper cover separates from the tray, and this pulling force value is the clamping opening and closing force of the upper cover and the tray. The product clamping efficiency is high, the force value transmission is accurate, and the detection accuracy is high.

[0008] In one feasible solution, the lower fixture includes: a lower base plate and a lower guide rail plate; The lower guide plate is a rectangular frame with an opening on one side, and the lower guide plate is provided with an extending protrusion. The lower guide plate is disposed on the lower base plate, the extended protrusion forms the lower guide groove on the lower base plate, and the first snap-fit ​​groove is formed between the extended protrusion and the top surface of the lower base plate.

[0009] In one feasible solution, the upper fixture includes: an upper base plate and an upper guide rail plate; The upper guide plate is a rectangular frame with an opening on one side, and the top corners of the upper guide plate and the upper base plate are connected by a connecting rod. Upper guide rail grooves are formed on both sides of the upper guide rail plate for inserting the upper cover; The second snap-fit ​​slot is provided on the upper guide rail plate.

[0010] In one feasible solution, the upper fixture further includes: a movable baffle; The movable baffle is detachably mounted on the upper guide plate, located at the opening of the upper guide plate, and is used to abut against the upper cover.

[0011] In one feasible solution, the movable baffle is provided with the second snap-fit ​​groove for the insertion of the second protruding edge.

[0012] In one feasible solution, the upper guide plate is provided with receiving grooves on both sides, and the movable baffle is slidably inserted into the receiving grooves.

[0013] In one feasible solution, the upper base plate is a hollowed-out frame shape with multiple hollowed-out areas; The top of the upper base plate is provided with a connecting protrusion, and the connecting protrusion is provided with a threaded hole for threaded connection with the force transmission rod.

[0014] In one feasible solution, the machine tool is provided with a limiting protrusion, and the machine tool is provided with a threaded hole at the limiting protrusion; The lower fixture is provided with a limiting groove and a fixing through hole. The limiting groove is used for the limiting protrusion to be inserted, and the lower fixture is detachably fixed to the machine base by fixing bolts.

[0015] In one feasible solution, the upper fixture and the lower fixture are made of aluminum alloy; The force transmission rod is made of alloy steel.

[0016] This invention also provides a method for using a clamping opening force testing fixture for blister packaging products, comprising the following steps: S1 lower fixture is fixed on the machine base; The upper fixture of S2 is connected to the tensile joint of the universal testing machine via a force transmission rod; The S3 product is pushed into the lower fixture along the lower guide groove of the lower fixture, and the first protruding edge and the second protruding edge are respectively inserted into the first snap-fit ​​groove and the second snap-fit ​​groove. S4 The movable baffle is inserted into the upper fixture; Pull the top cover of the S5 universal testing machine upwards until the top cover separates from the tray. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the product in this invention; Figure 2 This is a schematic diagram of the tray in this invention; Figure 3 This is a schematic diagram of a clamping opening force testing fixture for thermoformed products according to an embodiment of the present invention; Figure 4 As described in the embodiments of the present invention Figure 3 Enlarged view of point A in the image; Figure 5 This is a schematic diagram of the lower fixture in an embodiment of the present invention; Figure 6 As described in the embodiments of the present invention Figure 5 Enlarged view of point B in the image; Figure 7 This is a schematic diagram of the lower fixture in an embodiment of the present invention; Figure 8 As described in the embodiments of the present invention Figure 7 Enlarged view of point C in the image; Figure 9 This is a schematic diagram of the upper guide rail plate in an embodiment of the present invention; Figure 10 As described in the embodiments of the present invention Figure 9 Enlarged view of point D in the image; Figure 11 This is a schematic diagram of the bottom of the lower fixture in an embodiment of the present invention; Figure 12 This is a schematic diagram of the machine tool in an embodiment of the present invention; Figure 13 This is a schematic diagram of the first usage state of the test fixture in an embodiment of the present invention; Figure 14 As described in the embodiments of the present invention Figure 13 Enlarged view of point E in the image; Figure 15 This is a schematic diagram of the second usage state of the test fixture in an embodiment of the present invention; Figure 16 As described in the embodiments of the present invention Figure 15 Enlarged view of point F in the image.

[0019] Numbering on the map: 1. Lower fixture; 101. Lower guide rail groove; 102. First snap-fit ​​groove; 11. Lower base plate; 111. Limiting snap-fit ​​groove; 112. Limiting groove; 113. Fixing through hole; 12. Lower guide rail plate; 121. Extending protrusion; 2. Upper fixture; 201. Second snap-fit ​​groove; 202. Receiving groove; 203. Hollowed-out area; 21. Upper base plate; 211. Connecting protrusion; 212. First threaded hole; 22. Upper guide rail plate; 23. Connecting rod; 24. Movable baffle; 3. Universal testing machine; 31. Machine base; 311. Limiting protrusion; 312. Second threaded hole; 32. Tensile joint; 4. Force transmission rod; 100. Product; 110. Tray; 120. Top cover; 130. First protruding edge; 140. Second protruding edge. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The technical solution of the present invention will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0024] As described in the background section of this application, the company's Tray blister packaging products include a tray and a top cover. After the top cover is closed, there are requirements for the clamping and opening force between the top cover and the tray. Therefore, after the product is blister-formed, a testing machine is needed to test the clamping and opening force between the top cover and the tray.

[0025] The inventors of this application have discovered that, currently, when testing the clamping and opening force of blister pack products, the product is inconvenient to clamp and fix, the clamping efficiency is low, and the testing accuracy is poor.

[0026] To address the aforementioned problems, the inventors of this application have proposed a technical solution, the specific embodiments of which are as follows: Example 1 Figure 1This is a schematic diagram of the product in this invention. Figure 2 This is a schematic diagram of the tray in the present invention. Figure 3 This is a schematic diagram of a clamping opening force testing fixture for thermoformed products according to an embodiment of the present invention. Figure 4 As described in the embodiments of the present invention Figure 3 Enlarged view of point A in the image. Figure 5 This is a schematic diagram of the lower fixture in an embodiment of the present invention. Figure 6 As described in the embodiments of the present invention Figure 5 Enlarged view of point B in the image. Figure 7 This is a schematic diagram of the lower fixture in an embodiment of the present invention. Figure 8 As described in the embodiments of the present invention Figure 7 Enlarged view of point C in the image. Figure 9 This is a schematic diagram of the upper guide rail plate in an embodiment of the present invention. Figure 10 As described in the embodiments of the present invention Figure 9 A magnified view of point D in the image. Figure 11 This is a schematic diagram of the bottom of the lower fixture in an embodiment of the present invention. Figure 12 This is a schematic diagram of the machine tool in an embodiment of the present invention. Figure 13 This is a schematic diagram of the first usage state of the test fixture in an embodiment of the present invention. Figure 14 As described in the embodiments of the present invention Figure 13 Enlarged view of point E in the image. Figure 15 This is a schematic diagram of the second usage state of the test fixture in an embodiment of the present invention. Figure 16 As described in the embodiments of the present invention Figure 15 Enlarged view of point F in the image.

[0027] like Figures 1 to 16 As shown, the clamping opening force testing fixture for blister packaging products in this embodiment includes a product 100 comprising a tray 110 and a top cover 120. Packaged items are placed into the tray 110, and then the top cover 120 is placed over the tray 110 to close it. The bottom perimeter of the tray 110 has outwardly extending first protruding edges 130, and the bottom perimeter of the top cover 120 has outwardly extending second protruding edges 140. After the top cover 120 is closed, the first protruding edges 130 of the tray 110 and the second protruding edges 140 of the top cover 120 are spaced a certain distance apart in the height direction.

[0028] The clamping opening force testing fixture includes: a lower fixture 1 and an upper fixture 2.

[0029] The lower fixture 1 and the upper fixture 2 are set up separately. The lower fixture 1 is set on the machine base 31 of the universal testing machine 3, and the upper fixture 2 is located above the lower fixture 1. The upper fixture 2 is connected to the tensile joint 32 of the universal testing machine 3 through the force transmission rod 4.

[0030] The lower fixture 1 is provided with a lower guide rail groove 101 and a first locking groove 102. The lower guide rail groove 101 of the lower fixture 1 is adapted to the length of the tray 110. The left, right and rear side walls of the lower fixture 1 are all provided with the first locking groove 102.

[0031] The upper fixture 2 has second snap-fit ​​grooves 201 on the left, right and rear side walls.

[0032] In this embodiment, during use, the upper cover is placed on the tray to form a packaging tray (product). The product tray is pushed into the lower fixture along the lower guide groove of the lower fixture, at which point the product is located between the lower fixture and the upper fixture. After the product is fully pushed in, the left and right sides and the rear side of the first protruding edge of the tray are inserted into the first insertion groove of the lower fixture, fixing the tray on the lower fixture; at the same time, the left and right sides and the rear side of the second protruding edge of the upper cover are inserted into the second snap-fit ​​groove of the upper fixture, fixing the upper cover on the upper fixture, and after the product is clamped and fixed, the central axis of the lower fixture, the upper fixture, the force transmission rod, and the product coincides with each other.

[0033] Then, the universal testing machine pulls the upper fixture upward, and the upper fixture moves the upper cover upward until the upper cover separates from the tray. At the same time, the universal testing machine records the pulling force when the upper cover separates from the tray. This pulling force value is the clamping and opening force between the upper cover and the tray.

[0034] As can be seen from the above, the clamping opening force testing fixture for thermoformed products in this embodiment is configured with a lower fixture and an upper fixture. The lower fixture is set on the machine base of the universal testing machine, and the upper fixture is connected to the tensile joint of the universal testing machine through a force transmission rod. The lower fixture is provided with a lower guide rail groove and a first locking groove, and the lower fixture is provided with a second locking groove. The central axes of the lower fixture, the upper fixture, and the force transmission rod coincide with each other. In this embodiment, the clamping opening force testing fixture for blister packaging products is used such that, during use, the product tray is pushed into the lower fixture along the lower guide rail groove. After the product is fully pushed in, the left and right sides and the rear side of the first protruding edge of the tray are inserted into the first insertion groove of the lower fixture, fixing the tray to the lower fixture. At the same time, the left and right sides and the rear side of the second protruding edge of the upper cover are inserted into the second locking groove of the upper fixture, fixing the upper cover to the upper fixture. The product is easily clamped and fixed. Then, the universal testing machine pulls the upper fixture upward, and the upper fixture drives the upper cover upward until the upper cover separates from the tray. The universal testing machine records the pulling force when the upper cover separates from the tray. This pulling force value is the clamping opening and closing force of the upper cover and the tray. The product clamping efficiency is high, the force value transmission is accurate, and the detection accuracy is high.

[0035] Optional, such as Figure 5 , Figure 6 and Figure 14 As shown, the clamping opening force testing fixture for thermoformed products in this embodiment includes a lower fixture 1 comprising a lower base plate 11 and a lower guide rail plate 12.

[0036] Limiting slots 111 are provided on the left, right and rear sides of the bottom plate 11.

[0037] The lower guide plate 12 is a rectangular frame with an opening on one side, and the top of the lower guide plate 12 is provided with an inwardly extending protrusion 121.

[0038] The lower guide plate 12 is disposed in the limiting slot 111 of the lower base plate 11. The extended protrusions 121 on the left and right sides of the lower guide plate 12 form a lower guide groove 101 on the top surface of the lower base plate 11. The bottom surface of the extended protrusions 121 of the lower guide plate 12 is spaced at a certain distance from the top surface of the lower base plate 11, and a first engaging groove 102 is formed between the lower guide plate 12 and the top surface of the lower base plate 11.

[0039] When product 100 is placed, product tray 110 is placed on the lower base plate 11, located at the opening of the lower guide plate 12. The left and right sides of tray 110 are engaged between the extension protrusions 121 of the lower guide plate 12 (lower guide groove). The first protruding edge 130 of tray 110 is inserted into the first engaging groove 102 between the lower guide plate 12 and the lower base plate 11. Then, product 100 is pushed until the tray (product) is completely inserted into the lower base plate 11. At this time, the tray is fixed on the lower fixture.

[0040] Furthermore, such as Figure 7 , Figure 8 and Figure 14 As shown, the clamping opening force testing fixture for thermoformed products in this embodiment includes an upper base plate 21 and an upper guide rail plate 22.

[0041] The upper guide plate 22 is a rectangular frame with an opening on one side. The upper base plate 21 is located above the upper guide plate 22. The four corners of the upper guide plate 22 and the four corners of the upper base plate 21 are connected by connecting rods 23.

[0042] The left and right side plates of the upper guide plate 22 form upper guide grooves, which are adapted to the upper cover 120 of the product 100.

[0043] The upper guide plate 22 is assembled from an upper plate and a lower plate. Second snap-fit ​​grooves 201 are provided on the left and right sides and the rear side wall of the upper guide plate 22.

[0044] When product 100 enters, the top cover 120 enters from the opening side of the upper guide plate 22. The left and right sides of the top cover 120 are locked between the left and right sides of the upper guide plate 22 (upper guide groove). The second protruding edge 140 of the top cover 120 is inserted into the second locking groove 201 of the upper guide plate 22. After the product is fully inserted, the top cover 120 is fixed on the upper guide plate 22.

[0045] Furthermore, such as Figure 9 and Figure 10As shown, the clamping opening force testing fixture for thermoformed products in this embodiment further includes an upper fixture 2: a movable baffle 24.

[0046] The movable baffle 24 is detachably mounted on the upper guide plate 22 and located at the opening of the upper guide plate 22. After installation, the movable baffle 24 and the upper guide plate 22 form a closed rectangular frame. The movable baffle 24 abuts against the front wall of the upper cover 120, so that all four side walls of the upper cover 120 abut against the upper fixture 2, making the upper cover 120 more stable on the upper fixture 2.

[0047] Furthermore, in this embodiment, the clamping opening force testing fixture for thermoformed products also has a second snap-fit ​​groove 201 on the movable baffle 24.

[0048] After the movable baffle 24 is installed, the second protruding edge 140 on the front side of the upper cover 120 is inserted into the second locking groove 201 of the movable baffle 24, so that the protruding edges 140 on all four sides of the upper cover 120 are fixed in the second locking groove 201 of the upper fixture 1. When the universal testing machine drives the upper fixture 1 to rise, the second protruding edges on all four sides of the upper cover are pulled upward synchronously, making the upward movement of the upper cover more stable and the testing more accurate.

[0049] Furthermore, in this embodiment, the clamping opening force testing fixture for thermoformed products has accommodating grooves 202 on the left and right sides of the upper guide plate 22. The two ends of the movable baffle 24 can be slidably inserted into the accommodating grooves 202 of the upper guide plate 22, which facilitates the installation and removal of the movable baffle 24, and thus facilitates the insertion and removal of the product.

[0050] Optionally, in this embodiment, the clamping opening force testing fixture for thermoformed products has an upper base plate 21 with a hollow frame shape, and the upper base plate 21 has multiple hollow areas 203 to reduce the weight of the upper base plate 21.

[0051] The top of the upper base plate 21 is provided with a connecting protrusion 211, and the upper base plate 21 is provided with a first threaded hole 212 on the connecting protrusion 211. The force transmission rod 4 is a threaded rod, so that the upper base plate 21 and the force transmission rod 4 are connected by a threaded connection, which facilitates the replacement of the upper fixture 1.

[0052] Optional, such as Figure 11 and Figure 12 As shown, in this embodiment, the clamping opening force test fixture for thermoformed products has a rectangular limiting protrusion 311 on the machine base 31 of the universal testing machine, and the machine base 31 has a plurality of second threaded holes 312 at the limiting protrusion 311.

[0053] The bottom of the lower base plate 11 of the lower fixture 1 is provided with a limiting groove 112, and the lower base plate 11 is provided with a stepped fixing through hole 113 at the limiting groove 112.

[0054] During installation, the lower fixture 1 has its limiting protrusion 311 on the machine base 31 inserted into the limiting groove 112 on the lower base plate 11, positioning the lower base plate 11 (lower fixture) on the machine base 31. The lower base plate 11 is detachably fixed to the second threaded hole 312 on the machine base 31 using fixing bolts, facilitating the installation and removal of the lower fixture 1. For different sizes and specifications of tray products, simply replace the corresponding lower and upper fixtures.

[0055] Furthermore, in this embodiment, the clamping opening force testing fixture for thermoformed products, with the lower fixture 1 and upper fixture 2 made of aluminum alloy, has the required rigidity and strength.

[0056] The force transmission rod 4 is made of alloy steel.

[0057] Example 2 The present invention also provides a method for using a clamping opening force testing fixture for thermoformed products.

[0058] The method of using the clamping opening force testing fixture for blister packaging products in this embodiment includes the following steps: The S1 lower fixture is fixed on the machine platform.

[0059] The upper fixture of S2 is connected to the tensile joint of the universal testing machine via a force transmission rod.

[0060] The S3 product is pushed into the lower fixture along the lower guide groove, and the first and second protrusions are inserted into the first and second locking grooves respectively.

[0061] The S4 movable baffle is inserted into the upper fixture to fix the upper cover.

[0062] Pull the top cover of the S5 universal testing machine upwards until the top cover separates from the tray.

[0063] Specifically, the lower fixture is fixed to the machine base with bolts, and the upper fixture is connected to the tensile joint of the universal testing machine through a force transmission rod, ensuring that the central axes of the lower fixture, the upper fixture, and the force transmission rod coincide.

[0064] The product (tray) is fully pushed into the test fixture along the lower guide groove of the lower jig, such as... Figure 13 As shown in the diagram; then insert the movable baffle into the receiving groove of the upper guide plate to complete the clamping and fixing of the product, as shown. Figure 15 As shown in the diagram, at this time, the left and right sides and the rear side of the first protruding edge of the tray are inserted into the first locking groove of the lower fixture, and the tray is fixed on the lower fixture; the four sides of the second protruding edge of the upper cover are respectively inserted into the second locking groove of the upper guide plate and the movable baffle, and the upper cover is fixed on the upper fixture; and after the product is pushed in, the lower fixture, the upper fixture, the force transmission rod and the central axis of the product coincide with each other.

[0065] Then, the universal testing machine slowly pulls the upper fixture upward, and the upper fixture drives the upper cover to slowly move upward until the upper cover separates from the tray, thus obtaining the clamping opening force value between the upper cover and the tray.

[0066] In this invention, unless otherwise explicitly specified and limited, the first feature being "on" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium.

[0067] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "under," and "beneath" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A clamping opening force testing fixture for blister packaging products, the product comprising: A tray and a top cover, wherein the tray and the top cover are respectively provided with a first protruding edge and a second protruding edge, characterized in that it includes: a lower fixture and an upper fixture; The lower fixture is mounted on the machine platform of the universal testing machine, and the upper fixture is located above the lower fixture and is connected to the tensile joint of the universal testing machine through a force transmission rod. The lower fixture is provided with a lower guide rail groove and a first snap-fit ​​groove, and the lower guide rail groove is adapted to the tray. The lower fixture is provided with a second locking groove; The product is inserted into the lower fixture along the lower guide groove, located between the lower fixture and the upper fixture, with the first protruding edge and the second protruding edge respectively inserted into the first snap-fit ​​groove and the second snap-fit ​​groove, and the lower fixture, the upper fixture, the force transmission rod and the central axis of the product coincide with each other; The universal testing machine is used to pull the top cover to separate it from the tray, and to record the pulling force when the top cover separates from the tray.

2. The clamping opening force testing fixture for thermoformed products according to claim 1, characterized in that, The lower fixture includes: a lower base plate and a lower guide rail plate; The lower guide plate is a rectangular frame with an opening on one side, and the lower guide plate is provided with an extending protrusion. The lower guide plate is disposed on the lower base plate, the extended protrusion forms the lower guide groove on the lower base plate, and the first snap-fit ​​groove is formed between the extended protrusion and the top surface of the lower base plate.

3. The clamping opening force testing fixture for thermoformed products according to claim 1, characterized in that, The upper fixture includes: an upper base plate and an upper guide rail plate; The upper guide plate is a rectangular frame with an opening on one side, and the top corners of the upper guide plate and the upper base plate are connected by a connecting rod. Upper guide rail grooves are formed on both sides of the upper guide rail plate for inserting the upper cover; The second snap-fit ​​slot is provided on the upper guide rail plate.

4. The clamping opening force testing fixture for thermoformed products according to claim 3, characterized in that, The upper fixture also includes: a movable baffle; The movable baffle is detachably mounted on the upper guide plate, located at the opening of the upper guide plate, and is used to abut against the upper cover.

5. The clamping opening force testing fixture for thermoformed products according to claim 4, characterized in that, The movable baffle is provided with the second snap-fit ​​groove for the insertion of the second protruding edge.

6. The clamping opening force testing fixture for thermoformed products according to claim 4, characterized in that, The upper guide plate has receiving grooves on both sides, and the movable baffle can be slidably inserted into the receiving grooves.

7. The clamping opening force testing fixture for thermoformed products according to claim 1, characterized in that, The upper base plate is a hollow frame shape with multiple hollow areas; The top of the upper base plate is provided with a connecting protrusion, and the connecting protrusion is provided with a threaded hole for threaded connection with the force transmission rod.

8. The clamping opening force testing fixture for thermoformed products according to claim 1, characterized in that, The machine tool is provided with a limiting protrusion, and the machine tool is provided with a threaded hole at the limiting protrusion; The lower fixture is provided with a limiting groove and a fixing through hole. The limiting groove is used for the limiting protrusion to be inserted, and the lower fixture is detachably fixed to the machine base by fixing bolts.

9. The clamping opening force testing fixture for thermoformed products according to any one of claims 1 to 8, characterized in that, The upper fixture and the lower fixture are made of aluminum alloy; The force transmission rod is made of alloy steel.

10. A method of using the clamping opening force testing fixture for thermoformed products as described in claim 4, characterized in that, Includes the following steps: S1 lower fixture is fixed on the machine base; The upper fixture of S2 is connected to the tensile joint of the universal testing machine via a force transmission rod; The S3 product is pushed into the lower fixture along the lower guide groove of the lower fixture, and the first protruding edge and the second protruding edge are respectively inserted into the first snap-fit ​​groove and the second snap-fit ​​groove. S4 The movable baffle is inserted into the upper fixture; Pull the top cover of the S5 universal testing machine upwards until the top cover separates from the tray.

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