A food can product pressure detection device

Abstract

The present application relates to the technical field of can product pressure detection, in particular to a food can product pressure detection device, which comprises a detection platform, a support frame is installed at the bottom of the detection platform, an inverted U-shaped frame is fixed at the middle position of the top of the detection platform, a positioning unit for positioning cans is arranged on the U-shaped frame and the detection platform, a pressing unit and an abutting unit are respectively arranged at the top of the detection platform and located at the left and right sides of the U-shaped frame. The vertical cylinder of the present application simulates the vertical pressure of the top stacked cans by pressing the arc-shaped clamping jaw downward, at the same time, the abutting unit is expanded and fixed at right angles through the hinge of the abutting plate, reproducing the abutting constraint of the side wall and corner of the conveying vehicle on the cans; and the arc-shaped abutting block is self-adaptively deflected under the action of the elastic expansion rod after being unlocked, simulating the change of the pressure direction caused by the friction between the cans in the transportation process, so as to accurately restore the complex stress state in the real transportation environment under the laboratory conditions, making the detection data more practical.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of can product pressure detection, in particular to a food can product pressure detection device. BACKGROUND

[0002] Food cans are a long-term storage form of food packaged by sealing containers and subjected to high-temperature sterilization processing. It is crucial to detect the pressure of food cans. During transportation and stacking, cans need to withstand the combined pressure caused by vibration, extrusion and changes in temperature and humidity. If the structural strength of the can body is insufficient, deformation may occur, affecting the appearance of the product. Through accurate pressure detection, the lateral extrusion, top stacking and other stress states in the actual transportation scenario can be simulated to evaluate the can body's resistance to deformation and material uniformity, thereby screening out products with structural defects, ensuring the integrity of the cans in the supply chain and avoiding food safety risks and economic losses caused by packaging failure.

[0003] Among the devices for pressure testing of food cans, the utility model patent with publication number CN220170753U discloses a pressure detection device for meat can production. This technical solution uses two groups of push plates to press and extrude the side walls of meat cans to detect the pressure on the side walls of meat cans. It is convenient to control the first electric hydraulic rod and the second electric hydraulic rod to apply different pressures to detect meat cans, and the pressure application method is simple.

[0004] Although the above detection device can quickly test the pressure of food cans, there are multiple complex stress states such as lateral extrusion and top stacking during actual food can transportation. The resistance pressure on the side walls and corner positions of the food cans in the delivery vehicle varies in direction and size. The above device uses a conventional single-direction pressure test method, which cannot accurately simulate the stress characteristics under the above complex working conditions, resulting in a deviation between the test data and the actual pressure condition in the transportation environment. In addition, the above test process has a greater impact on the structural integrity of the can body. After a single test, the deformation of the can body makes it impossible to repeatedly adjust the position for multi-angle testing, and the limited test positions may increase the risk of accidental data. SUMMARY

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is: a food can product pressure detection device, comprising a detection platform, a support frame is installed at the bottom of the detection platform, a U-shaped frame is fixed at the middle position of the top of the detection platform, a positioning unit for positioning the can is arranged on the U-shaped frame and the detection platform, a pressure unit and an abutting unit are arranged on the top of the detection platform and located on the left and right sides of the U-shaped frame respectively; the pressure unit cooperates with the abutting unit to simulate the pressure scenario of the can under different pressure and abutting conditions and detect the pressure resistance of the food can; the positioning unit comprises a lower positioning element installed on the top of the detection platform, a vertical cylinder is installed at the bottom of the horizontal section of the U-shaped frame, an upper positioning element for accurately positioning the food can is installed on the extension end of the vertical cylinder and cooperates with the lower positioning element; the pressure unit comprises an adjusting element installed on the rightmost side of the top of the detection platform, a connecting element is arranged on the adjusting element, an arc-shaped pressure block for continuously pressing the food can is connected to the connecting element, and the connecting element is adjusted in position by the adjusting element and cooperates with the arc-shaped pressure block to press the food can in different directions; the abutting unit comprises a horizontal slide rail fixed on the top of the detection platform, and a pressure element for abutting the food can is connected to the horizontal slide rail through an electric sliding block.

[0006] Further, the lower positioning element comprises a positioning seat rotatably installed on the top of the detection platform, limit grooves are symmetrically arranged on the positioning seat, a positioning arc-shaped plate is slidably connected to each limit groove, and a bidirectional threaded rod is threadedly connected to the two positioning arc-shaped plates, the bidirectional threaded rod is rotatably connected to the positioning seat, and a stabilizing structure is arranged between the positioning seat and the detection platform.

[0007] Further, the stabilizing structure comprises a stabilizing seat fixed on the top of the detection platform, the stabilizing seats are uniformly distributed around the center of the positioning seat, a locking seat is fixed on the side surface of the positioning seat and cooperates with the stabilizing seat, and a positioning pin is connected between the locking seat and the corresponding stabilizing seat.

[0008] Further, the upper positioning element comprises a connecting frame fixed on the extension end of the vertical cylinder, the connecting frame is inverted U-shaped, a horizontal plate is commonly connected to the two vertical sections of the connecting frame, a vertical column is fixed at the bottom of the horizontal plate, a plurality of limit columns are uniformly arranged on the side surface of the vertical column, an installation sleeve is radially slidably connected to the limit column, an arc-shaped clamping jaw is fixed at the bottom of the installation sleeve, a threaded protrusion is arranged on the side surface of the vertical column, a swivel ring is connected to the position corresponding to the threaded protrusion on the vertical column, an adjusting ring is rotatably installed at the bottom of the swivel ring, a connecting rod is hingedly connected to the adjusting ring in the circumferential direction, the connecting rod is respectively hingedly connected to the corresponding installation sleeve, and a detection structure for detecting the deformation condition of the food can under pressure is arranged on the vertical column.

[0009] Further, the detection structure comprises a vertical stud threadedly connected to the horizontal plate, a square column is rotatably installed at the bottom of the vertical stud, the square column is vertically and slidably connected in the vertical stud, a mounting plate is fixed to the bottom of the square column, a plurality of telescopic rods are uniformly arranged on the right side of the mounting plate, a pressure sensor is installed at the telescopic end of each telescopic rod, a vertical rod is fixed to the telescopic end of each telescopic rod, and an arc-shaped sleeve is connected to the side of the arc-shaped jaw at the corresponding position on the right side through an L-shaped connecting rod, and the arc-shaped sleeve is slidably connected with the vertical rod.

[0010] Further, the adjusting element comprises a longitudinal slide rail fixed to the top of the detection platform, a moving sleeve is connected to the longitudinal slide rail through an electric sliding block two, an embedded rod is slidably connected in the moving sleeve and hinged to the connecting element; a limiting structure for limiting the connecting element is arranged on the top of the detection platform and located on the left side of the longitudinal slide rail.

[0011] Further, the limiting structure comprises two sections of limiting slide rails fixed to the top of the detection platform, both of which are arc-shaped and concentrically distributed with the vertical air cylinder as the center, the corresponding central angles of the two sections of limiting slide rails are equal, and both of which are connected with the connecting element through limiting sliding blocks.

[0012] Further, the connecting element comprises a connecting plate hinged to the embedded rod, a radial slide rail connected with the two limiting sliding blocks is fixed to the left side of the connecting plate, a driving plate is slidably connected on the radial slide rail, a cylinder one is installed on the left side of the connecting plate, the telescopic end of the cylinder one is fixedly connected with the driving plate, and the driving plate is connected with the arc-shaped abutting block through a locking structure.

[0013] Further, the locking structure comprises a transmission plate rotatably installed at the left end of the driving plate, the transmission plate is fixedly connected with the arc-shaped abutting block, a locking matching plate is fixed to the inner arc surface of the arc-shaped abutting block and located above the transmission plate, an inverted L-shaped fixing plate is fixed to the top of the driving plate, a locking rod is vertically and slidably connected to the horizontal section of the L-shaped fixing plate, a locking hole with an expanded upper end is formed in the locking matching plate at a position corresponding to the locking rod, a return spring is connected between the locking rod and the horizontal section of the L-shaped fixing plate, and the front and rear sides of the driving plate and the top of the detection platform jointly provide an unlocking assembly for unlocking the locking structure.

[0014] Further, the pressure receiving element comprises a moving plate fixed to the electric sliding block one, two abutting plates are installed on the top of the moving plate through a cylinder two, the two abutting plates are hinged to each other and the hinged positions thereof are connected with the pushing end of the cylinder two, guide grooves are symmetrically formed in the front and rear of the moving plate, and guide rods are fixed to the bottom of the abutting plates and at positions corresponding to the guide grooves.

[0015] The beneficial effects of the present application are as follows: firstly, the present application simulates the vertical pressure of the top-stacked cans by vertically downward pressing the arc-shaped clamping jaw through the vertical air cylinder, and the abutting unit is unfolded and rotated through the hinge of the abutting plate to make the abutting plate flat or at a right angle, thereby simulating the abutting constraint of the side wall and the corner of the conveying vehicle on the cans; and the arc-shaped abutting block is adapted to deflect after being unlocked by the elastic expansion rod, thereby simulating the change of the pressure direction caused by the friction between the cans in the transportation process, so as to accurately restore the complex stress state in the real transportation environment under the laboratory conditions, and make the detection data more practical.

[0016] Secondly, the present application changes the height of the adjusting ring through the rotating ring, and adjusts the position of the pressure sensor through the linkage of the L-shaped connecting rod, so as to ensure that the axis of the pressure sensor is always consistent with the pressing direction of the pressing unit; and the height of the pressure sensor is adjusted through the rotating vertical stud, so that the pressure sensor is moved to the middle of the food cans, and the pressure sensor can be ensured to be at the position most prone to deformation, thereby feeding back the deformation of the food cans after being pressed in the first time.

[0017] Thirdly, the present application quickly adjusts the detection position of the food cans after positioning through the lower positioning element, so as to detect the pressure resistance of different positions of the food can body, thereby detecting the uniformity of the food can material, and avoiding the influence of the accuracy of the detection result caused by single position detection in the process of detecting the pressure resistance, and the accidental error of single detection can also be effectively eliminated through the multi-directional pressing detection, thereby effectively improving the accuracy of the detection result.

[0018] Fourthly, the present application quickly clamps the cans through the symmetrical positioning arc-shaped plate driven by the bidirectional threaded rod, so as to realize one-key radial positioning; and the linkage design of the rotating ring and the vertical stud can synchronously adjust the clamping position of the arc-shaped clamping jaw and the height of the pressure sensor for different sizes of cans, and the positions of the abutting plate and the connecting element are adjusted through the slide rail and the electric sliding block, so that the degree of automation is higher, thereby effectively reducing the repeated calibration steps of manual operation, significantly improving the detection efficiency and reducing the operation complexity. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in combination with the drawings and embodiments.

[0020] Figure 1 is a structural schematic diagram of the present application.

[0021] Figure 2 is a structural schematic diagram of the positioning unit in the present application.

[0022] Figure 3 is a structural schematic diagram of the upper positioning element in the present application.

[0023] Figure 4 is a partial sectional view of the upper positioning element in the present application.

[0024] Figure 5 is a schematic view of the structure of the abutting unit in the present application.

[0025] Figure 6 is a schematic view of the structure of the pressing unit in the present application.

[0026] Figure 7 is a back partial sectional view of the pressing unit in the present application.

[0027] Figure 8 is a partial schematic view of the connecting element in the present application.

[0028] Figure 9 is a state change view of the lower positioning element moving from the middle position of the limiting slide rail to the front position in the present application.

[0029] In the figure: 1, detection platform; 11, support frame; 12, U-shaped frame; 2, positioning unit; 21, lower positioning element; 211, positioning seat; 212, positioning arc-shaped plate; 213, bidirectional threaded rod; 214, stabilizing seat; 215, locking seat; 22, vertical air cylinder; 23, upper positioning element; 231, connecting frame; 232, horizontal plate; 233, vertical column; 234, limiting column; 235, mounting sleeve; 236, arc-shaped clamping jaw; 237, swivel ring; 238, adjusting ring; 239, connecting rod; 240, vertical stud; 241, square column; 242, mounting plate; 243, pressure sensor; 244, vertical rod; 245, L-shaped connecting rod; 246, arc-shaped sleeve; 3, pressing unit; 31, adjusting element; 311, longitudinal slide rail; 312, moving sleeve; 313, embedded rod; 314, limiting slide rail; 32, connecting element; 321, connecting plate; 322, radial slide rail; 323, driving plate; 324, air cylinder one; 325, transmission plate; 326, locking matching plate; 327, L-shaped fixing plate; 328, locking rod; 329, unlocking block; 33, arc-shaped abutting block; 340, triggering block; 341, wedge-shaped block; 342, L-shaped pushing rod; 4, abutting unit; 41, horizontal slide rail; 42, pressure receiving element; 421, moving plate; 422, air cylinder two; 423, abutting plate; 424, guide rod. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below. The embodiments described below are exemplary only, and are intended to explain the present application, and are not to be understood as limiting the present application. The specific techniques or conditions not mentioned in the embodiments are performed according to the techniques or conditions described in the literature in the art or according to the product instructions.

[0031] Reference Figure 1The utility model provides a kind of food can product pressure detection device, including detection platform 1, support frame 11 is installed in the bottom of detection platform 1, inverted U-shaped frame 12 is fixed in the middle position of the top of detection platform 1, positioning unit 2 for positioning can is arranged in U-shaped frame 12 and detection platform 1, and pressure unit 3 and abutting unit 4 are arranged respectively in the top of detection platform 1 and located U-shaped frame 12 left and right sides.

[0032] The utility model can simulate the scene that can is pressed under different pressure and abutting by pressure unit 3 cooperation abutting unit 4 and detect the pressure resistance of food can, and positioning unit 2 is used to position food can and simulate the condition that food can is pressed by multiple food cans on top after stacking, so that detection is closer to actual food can transport process, and then more accurately detect the pressure resistance of food can under the double action of top pressure and pressure of food can on side.

[0033] Specifically, the detection personnel first places food can standard sample on positioning unit 2, and accurately positions food can standard sample by positioning unit 2, after food can standard sample positioning is completed, the left side of food can standard sample is abutted by abutting unit 4, then control pressure unit 3 to press food can standard sample in middle position, at this time, record the pressing distance of pressure unit 3 when food can standard sample is pressed and deformed, then control abutting unit 4 to switch abutting condition, then control pressure unit 3 to press food can standard sample in multiple different positions, at this time, record the pressing distance of pressure unit 3 when food can standard sample is pressed and deformed in turn, after detection, to avoid the contingency of detection result, rotate food can standard sample by positioning unit 2, then repeat the above positioning and detection operation, and record all data, after food can standard sample detection is completed, only need to repeat positioning and detection operation to food can sample to be measured, and compare detection data, the pressure resistance of food can sample to be measured and the uniformity of food can material can be comprehensively evaluated.

[0034] Referring to Figures 1-2 Positioning unit 2 includes lower positioning element 21 installed on the top of detection platform 1, vertical cylinder 22 is installed at the bottom of the horizontal segment of U-shaped frame 12, and upper positioning element 23 for accurately positioning food can is installed at the telescopic end of vertical cylinder 22, which cooperates with lower positioning element 21.

[0035] The upper positioning element 21 comprises a positioning seat 211 rotatably mounted on the top of the detection platform 1, limit grooves are symmetrically arranged on the positioning seat 211, each limit groove is slidably connected with a positioning arc-shaped plate 212, two positioning arc-shaped plates 212 are threadedly connected with a bidirectional threaded rod 213, the bidirectional threaded rod 213 is rotatably connected with the positioning seat 211, and a stabilizing structure is arranged between the positioning seat 211 and the detection platform 1; the stabilizing structure comprises a stabilizing seat 214 fixed on the top of the detection platform 1, the stabilizing seat 214 is uniformly distributed in the circumferential direction of the center of the positioning seat 211, a locking seat 215 matched with the stabilizing seat 214 is fixed on the side surface of the positioning seat 211, and a positioning pin is jointly connected between the locking seat 215 and the stabilizing seat 214 at the corresponding position.

[0036] Specifically, the detection personnel first place the food can which is not sealed and does not contain products on the positioning seat 211, then rotate the bidirectional threaded rod 213 to simultaneously move the two positioning arc-shaped plates 212 to the food can, so that the food can is in a concentric state with the upper positioning element 23, and after the two positioning arc-shaped plates 212 contact the food can, the positioning of the food can can be quickly completed through the two positioning arc-shaped plates 212; after the compression strength detection of one position of the food can is completed, the positioning pin is removed, then the positioning seat 211 is rotated, so that the food can is rotated by the positioning seat 211, and when the positioning seat 211 is rotated to the position where the locking seat 215 and the stabilizing seat 214 are overlapped again, the rotation is stopped, at this time the positioning pin is inserted into the locking seat 215 and the stabilizing seat 214, so that the uniformity of different positions of the food can body is detected.

[0037] Referring to Figures 2-4 The upper positioning element 23 comprises a connecting frame 231 fixed on the telescopic end of the vertical air cylinder 22, the connecting frame 231 is an inverted U-shaped, a horizontal plate 232 is jointly connected on the two vertical segments of the connecting frame 231, a vertical column 233 is fixed on the bottom of the horizontal plate 232, a plurality of limiting columns 234 are uniformly arranged on the side surface of the vertical column 233 in the circumferential direction, a mounting sleeve 235 is radially and slidably connected on the limiting column 234, an arc-shaped clamping jaw 236 is fixed on the bottom of the mounting sleeve 235, a threaded protrusion is arranged on the side surface of the vertical column 233, a rotating ring 237 is connected on the position corresponding to the threaded protrusion on the vertical column 233, an adjusting ring 238 is rotatably mounted on the bottom of the rotating ring 237, a connecting rod 239 is hingedly connected on the circumferential direction of the adjusting ring 238, and the connecting rod 239 is hingedly connected with the corresponding mounting sleeve 235, respectively, and a detection structure for detecting the compression deformation of the food can is arranged on the vertical column 233.

[0038] The detection structure comprises a vertical stud 240 threadedly connected to the horizontal plate 232, a square column 241 rotatably installed at the bottom of the vertical stud 240, the square column 241 being vertically and slidably connected in the vertical column 233, an installation plate 242 being fixed at the bottom of the square column 241, a plurality of telescopic rods being uniformly arranged at the right side of the installation plate 242 in a circumferential direction, a pressure sensor 243 being installed at the telescopic end of each telescopic rod, a vertical rod 244 being fixed at the telescopic end of each telescopic rod, and an arc-shaped sleeve 246 being connected to the vertical rod 244 in a sliding mode through an L-shaped connecting rod 245 at the side of the arc-shaped clamping jaw 236 at the corresponding position on the right side.

[0039] The upper positioning element 23 is used for positioning the top of the food can and applying a continuous pressure, so as to simulate the scene that the top of the food can is subjected to a vertical pressure of other stacked food cans in the actual food can transportation process, so that the detection is more suitable for the use occasion of the food can, and the detection result is more practical. Meanwhile, by driving the adjusting ring 238 to move up and down through the swivel ring 237 and synchronously adjusting the arc-shaped clamping jaw 236, the arc-shaped clamping jaw 236 can be positioned for food cans of different sizes. Meanwhile, in cooperation with the arc-shaped sleeve 246 and the vertical rod 244, the pressure sensor 243 can be close to the inner side wall of the food can, so that the deformation of the food can can be quickly and accurately mastered.

[0040] Specifically, after the arc-shaped plate 212 to be positioned completes positioning of the food can, the height of the adjusting ring 238 is adjusted by rotating the swivel ring 237 according to the size of the food can, then the installation sleeve 235 is synchronously driven to move through the adjusting ring 238 cooperating with the connecting rod 239, so as to adjust the position of the arc-shaped clamping jaw 236 for the size of the food can. With the change of the position of the arc-shaped clamping jaw 236, the arc-shaped sleeve 246 is synchronously driven to change the position through the L-shaped connecting rod 245. At this time, the vertical rod 244 is driven by the arc-shaped sleeve 246, and the position of the pressure sensor 243 is adjusted. By this way of adjusting the position of the pressure sensor 243, it can be ensured that the pressure direction of the pressing unit 3 is always in the same straight line with the pressure sensor 243. Then the connecting frame 231 and the arc-shaped clamping jaw 236 are driven to move towards the top of the food can by the vertical cylinder 22, until the arc-shaped clamping jaw 236 abuts against the top of the food can. In order to ensure that the pressure sensor 243 is at the position where the deformation is most likely to occur, the height of the pressure sensor 243 is adjusted by rotating the vertical stud 240, until the pressure sensor 243 moves to the middle of the food can.

[0041] Referring to Figure 1 and Figure 5, the abutting unit 4 comprises a horizontal sliding rail 41 fixed on the top of the detection platform 1, and a pressure element 42 for abutting against the food cans is connected to the horizontal sliding rail 41 through an electric sliding block I; the pressure element 42 comprises a moving plate 421 fixed on the electric sliding block I, two abutting plates 423 are installed on the top of the moving plate 421 through a gas cylinder II 422, the two abutting plates 423 are hingedly connected to each other and the hinge positions thereof are connected to the telescopic ends of the gas cylinder II 422, guide grooves are symmetrically formed on the moving plate 421, and guide rods 424 are fixed on the bottom of the abutting plates 423 and correspond to the positions of the guide grooves.

[0042] The abutting unit 4 is used for simulating the situation that the food cans are located at the side wall of the conveying vehicle and the corner position of the conveying vehicle during the actual pressure process, and the pressure unit 3 is used for abutting against the food cans in different directions to make the abutting pressure more in line with the actual situation, and only the situation with the largest pressure is detected, so that the deformation of the food cans in the same batch during the conveying process after the detection is completed is avoided.

[0043] Specifically, after the food cans are positioned, the electric sliding block I is controlled to drive the abutting plates 423 to move towards the food cans until the hinge positions of the two abutting plates 423 abut against the food cans, then the pressure unit 3 is controlled to press the food cans in a direction perpendicular to the two abutting plates 423, after the pressing is completed, the pressure unit 3 is controlled to reset, then the gas cylinder II 422 is controlled to drive the hinge positions of the two abutting plates 423 to move to the left, at this time, the two abutting plates 423 will rotate simultaneously with the hinge positions as the center, and due to the cooperation of the guide rods 424 and the guide grooves, the included angle between the two abutting plates 423 is a right angle after the abutting plates 423 rotate, then the electric sliding block I is controlled to drive the abutting plates 423 to move towards the food cans again until the two abutting plates 423 abut against the food cans respectively.

[0044] Referring to Figures 6-7 , the pressure unit 3 comprises an adjusting element 31 installed on the rightmost side of the top of the detection platform 1, a connecting element 32 is arranged on the adjusting element 31, an arc-shaped abutting block 33 for continuously abutting against the food cans is connected to the connecting element 32, the adjusting element 31 comprises a longitudinal sliding rail 311 fixed on the top of the detection platform 1, a moving sleeve 312 is connected to the longitudinal sliding rail 311 through an electric sliding block II, and an embedded rod 313 hingedly connected to the connecting element 32 is horizontally and slidingly connected in the moving sleeve 312; a limiting structure for limiting the connecting element 32 is arranged on the top of the detection platform 1 and located on the left side of the longitudinal sliding rail 311; the limiting structure comprises two limiting sliding rails 314 fixed on the top of the detection platform 1, the two limiting sliding rails 314 are concentrically distributed with the vertical gas cylinder 22 as the center and are arc-shaped, the two limiting sliding rails 314 correspond to equal central angles, and the two limiting sliding rails 314 are connected to the connecting element 32 through limiting sliding blocks.

[0045] Referring to Figures 6-8 , the connecting element 32 comprises a connecting plate 321 hinged with the embedded rod 313, a radial slide rail 322 connected with two limiting slide blocks is fixed on the left side of the connecting plate 321, a driving plate 323 is slidably connected on the radial slide rail 322, a cylinder one 324 is installed on the left side of the connecting plate 321, the telescopic end of the cylinder one 324 is fixedly connected with the driving plate 323, and the driving plate 323 is connected with the arc-shaped pressing block 33 through a locking structure.

[0046] When the hinged positions of the two abutting plates 423 are pressed against the food cans, at this time, the moving sleeve 312 and the embedded rod 313 are located at the middle position of the longitudinal slide rail 311, at this time, the limiting slide blocks limit the position of the connecting plate 321 under the action of the moving sleeve 312, so that the connecting element 32 can be accurately positioned corresponding to the position of the pressure sensor 243, and it is ensured that the connecting element 32 is only subjected to the radial pressing force with the food cans as the center during the pressing process, and the connecting element 32 is in a stable state, then the control cylinder two 324 drives the arc-shaped pressing block 33 to complete the pressing action on the food cans horizontally to the left, until the arc-shaped pressing block 33 presses against the food cans, the food cans will continue to be pressed by the arc-shaped pressing block 33, at this time, the reading of the pressure sensor 243 is also zero, when the food cans are deformed by the pressing action of the arc-shaped pressing block 33, the pressure sensor 243 will be immediately pressed by the food cans to change the reading and no longer be zero, at this time, the pushing action of the cylinder two 324 is stopped and the moving distance of the arc-shaped pressing block 33 is recorded, then the cylinder two 324 controls the arc-shaped pressing block 33 to reset; when the two abutting plates 423 complete abutting with the food cans respectively, the control electric slide block two drives the moving sleeve 312 and the embedded rod 313 to move forward and backward, so as to drive the straight line where the connecting element 32 is located to coincide with the position of the pressure sensor 243, then the cylinder two 324 drives the arc-shaped pressing block 33 to move to the left again and completes the pressing action on the food cans, and then the same way as recording the data above is adopted to record the moving distance of the arc-shaped pressing block 33 when the pressure sensor 243 generates the reading.

[0047] It should be noted that, in order to ensure that the moving position of the electric slide block two is consistent every time, the movement of the electric slide block two needs to be accurately controlled, or the position indicating structure as shown in Figure 6 is used to accurately control the moving position of the electric slide block two, the position indicating structure comprises a pointing plate fixed on the moving sleeve 312, and a plurality of position indicating plates are fixed on the right side of the longitudinal slide rail 311.

[0048] Referring to Figure 8The locking structure comprises a transmission plate 325 rotatably installed at the left end of the driving plate 323, the transmission plate 325 is fixedly connected with an arc-shaped pressing block 33, the arc-shaped pressing block 33 is fixedly connected with a locking matching plate 326 on the inner arc surface and above the transmission plate 325, the top of the driving plate 323 is fixedly connected with an inverted L-shaped fixed plate 327, the horizontal section of the L-shaped fixed plate 327 is vertically and slidingly connected with a locking rod 328, the locking matching plate 326 is provided with a locking hole with an upper end flange at a position corresponding to the locking rod 328, a return spring is connected between the locking rod 328 and the horizontal section of the L-shaped fixed plate 327, and the front and rear sides of the driving plate 323 are jointly provided with an unlocking assembly for unlocking the locking structure together with the top of the detection platform 1.

[0049] In the embodiment, as shown in Figures 6-8 The unlocking assembly comprises an unlocking block 329 symmetrically fixed on the top of the detection platform 1, a guide inclined surface is formed in the top of the unlocking block 329, a round rod is fixedly connected to the top of the locking rod 328, an elastic telescopic rod is slidingly connected to the middle of the unlocking block 329, a trigger block 340 is fixedly connected to the left end of the transmission plate 325, the telescopic end of the elastic telescopic rod is used for pressing the trigger block 340 and causing the arc-shaped pressing block 33 to slightly rotate or have a rotating trend, a wedge-shaped block 341 is fixedly connected to the section of the elastic telescopic rod away from the transmission plate 325, a compression spring is connected between the wedge-shaped block 341 and the unlocking block 329, L-shaped push rods 342 are symmetrically fixed on the front and rear sides of the driving plate 323, the left end of the horizontal section of the L-shaped push rod 342 is a pushing inclined surface, and a scale is installed on the front side of the driving plate 323.

[0050] The connecting element 32 not only can quickly push the arc-shaped pressing block 33 to complete the pressing of the food cans, but also can quickly measure the moving distance of the arc-shaped pressing block 33 by the scale. When the connecting element 32 is located at the front and rear end positions by the cooperation of the locking structure and the unlocking assembly, the rotating state of the arc-shaped pressing block 33 can be unlocked, so that when the arc-shaped pressing block 33 is pressed to the food cans again, the arc-shaped pressing block 33 is slightly deflected or has a deflection trend by the telescopic pressing of the elastic telescopic rod, thereby simulating the situation that the actively pressed food cans have a trend of moving close to one side wall and generating a friction force to cause the pressed food cans to be pressed to increase the pressing strength of the food cans in the conveying process.

[0051] Referring to Figure 9When the position of the connecting element 32 is located at the front side of the limiting slide rail 314, at this time the drive plate 323 is pushed to the left by the air cylinder one 324, so that the drive plate 323 drives the trigger block 340 and the L-shaped push rod 342 and the arc-shaped abutting block 33 to move to the left and move to the side wall of the food can, with the movement of the arc-shaped abutting block 33, the front side round rod is slowly moved upward under the guide of the guide inclined surface corresponding to the top of the unlocking block 329, when the arc-shaped abutting block 33 contacts the side wall of the food can, the round rod moves on the guide inclined surface of the top of the unlocking block 329, at this time the locking rod 328 is gradually separated from the locking hole under the action of the round rod, and the L-shaped push rod 342 pushes the wedge block 341 and pushes the elastic telescopic rod to abut against the transmission plate 325 and the trigger block 340 in sequence and shrinks, when the locking rod 328 is completely separated from the locking hole, at this time the arc-shaped abutting block 33 can be deflected, and the elastic telescopic rod in the shrinking state can press the trigger block 340 at this time, and the arc-shaped abutting block 33 has a deflection tendency, if the contact friction between the arc-shaped abutting block 33 and the food can is small, at this time the arc-shaped abutting block 33 will be deflected slightly, and due to the elastic pressing action of the elastic telescopic rod, the arc-shaped abutting block 33 is deflected to the direction of the abutting plate 423 closer, in this process, the abutting position of the arc-shaped abutting block 33 and the food can does not change and keeps consistent with the position of the pressure sensor 243, so that the friction force generated by the abutting position of the arc-shaped abutting block 33 and the food can is increased to increase the pressure on the food can, and then the food can is more easily deformed.

[0052] It should be noted that when the position of the connecting element 32 is located at the rear side of the limiting slide rail 314, the working process is consistent with that of the front side.

[0053] The working steps of the present application are as follows: first, the detection personnel first place the unsealed food can standard sample on the positioning seat 211, then rotate the two-way threaded rod 213 to drive the two positioning arc-shaped plates 212 to clamp the standard sample to complete the radial positioning, then rotate the swivel ring 237 to adjust the height of the arc-shaped clamping jaw 236 according to the size of the standard sample, synchronously link the L-shaped connecting rod 245 to adjust the position of the pressure sensor 243, ensure that the axis is consistent with the subsequent pressing direction, then control the vertical air cylinder 22 to press the arc-shaped clamping jaw 236 to the top of the standard sample, and adjust the pressure sensor 243 to the most easily deformed position in the middle of the standard sample by rotating the vertical stud 240.

[0054] Second step, after the standard sample positioning is completed, control the electric sliding block one drive two hinged against the plate 423 movement, so that its hinge point against the left side of the standard sample, then control the movement of the sleeve 312 and embedded rod 313 to the midpoint of the longitudinal slide rail 311, then through the connecting element 32 drive arc-shaped pressure block 33 transverse compression standard sample, in the process of real-time monitoring pressure sensor 243, when the pressure sensor 243 reading is not zero immediately stop arc-shaped pressure block 33 movement, and record the arc-shaped pressure block 33 movement distance (i.e. critical displacement of deformation).

[0055] Third step, after the completion of the standard sample transverse compression test, start the cylinder two 422 pull against the plate 423 hinge point left, guide rod 424 and guide slot with the expansion of the plate 423 into a right angle, then control the electric sliding block one again push against the plate 423 respectively contact the two sides of the standard sample, then control the electric sliding block two adjustment movement of the sleeve 312 and embedded rod 313 to different positions before and after, repeat the compression and record the displacement of arc-shaped pressure block 33 again, in the process of compression, elastic expansion rod push arc-shaped pressure block 33 deflection to against the plate 423 direction, increase the contact friction to strengthen the deformation effect.

[0056] Fourth step, after the standard sample single place test data are recorded, remove the positioning pin, rotate the positioning seat 211 drive cans, after the lock seat 215 and stable seat 214 re-alignment of the positioning pin and fixed, then repeat step one to step three, in turn test cans different circumferential position, record multiple displacement data of arc-shaped pressure block 33 to eliminate the contingency.

[0057] In the fifth step, after the compression strength of the standard sample is detected, the standard sample is removed and replaced with the food can sample to be detected. Then the above four steps are repeated to obtain the displacement data of the arc-shaped pressing block 33 under the same conditions. Then all the recorded data are compared. If the deformation critical displacement of the food can sample to be detected before and after the detection is larger than that after the transverse compression test and the difference exceeds the allowable error range, or the deformation critical displacement of all positions of the food can sample to be detected is smaller than that of the standard sample and is not within the allowable error range, it indicates that the compression strength of the food can sample to be detected is poor. If the deformation critical displacement of the food can sample to be detected before and after the detection is larger than that after the transverse compression test and the difference does not exceed the allowable error range, or the deformation critical displacement of all positions of the food can sample to be detected is smaller than that of the standard sample and is within the allowable error range, it indicates that the compression strength of the food can sample to be detected meets the requirements. If there is a large deviation in the deformation critical displacement of each position of the food can sample to be detected after the test, it indicates that the uniformity of the overall can material of the food can sample to be detected is poor, otherwise it indicates that the uniformity of the overall can material of the food can sample to be detected meets the requirements.

[0058] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, which are still covered by the protection scope of the present application.

Claims

1. A pressure testing device for canned food products, comprising a testing platform, with a support frame installed at the bottom of the testing platform, characterized in that, A U-shaped frame is fixed at the top center of the detection platform. The U-shaped frame and the detection platform are jointly provided with a positioning unit for positioning the can. A pressing unit and an abutment unit are respectively provided on the top of the detection platform and on the left and right sides of the U-shaped frame. By using a pressing unit in conjunction with a contact unit, the pressure scenarios of canned food under different pressure and contact conditions can be simulated and the compressive strength of the food cans can be detected. The positioning unit includes a lower positioning element installed on the top of the detection platform, a vertical cylinder installed at the bottom of the horizontal section of the U-shaped frame, and an upper positioning element installed at the telescopic end of the vertical cylinder to cooperate with the lower positioning element to accurately position the food cans. The pressing unit includes an adjusting element installed on the far right of the top of the detection platform. The adjusting element is equipped with a connecting element, and the connecting element is connected to an arc-shaped pressing block for continuously pressing the food can. The position of the connecting element is adjusted by the adjusting element, and the arc-shaped pressing block is used to press the food can in different directions. The abutting unit includes a horizontal slide rail fixed to the top of the detection platform. A pressure receiving element for abutting the left side of the food can is connected to the horizontal slide rail via an electric slider. The pressure-bearing element includes a movable plate fixed on an electric slider. Two abutment plates are mounted on the top of the movable plate via a cylinder. The two abutment plates are hinged to each other, and their hinged positions are connected to the telescopic end of the cylinder. Guide grooves are symmetrically opened on the front and back of the movable plate. A guide rod is fixed at the bottom of the abutment plate and at the position corresponding to the guide groove.

2. The pressure detection device for canned food products according to claim 1, characterized in that, The lower positioning element includes a positioning seat rotatably mounted on the top of the detection platform. The positioning seat is symmetrically provided with limit grooves. Each limit groove is slidably connected to a positioning arc plate. The two positioning arc plates are threadedly connected to a bidirectional threaded rod. The bidirectional threaded rod is rotatably connected to the positioning seat. A stable structure is provided between the positioning seat and the detection platform.

3. The pressure detection device for canned food products according to claim 2, characterized in that, The stabilizing structure includes a stabilizing seat fixed to the top of the detection platform, and the stabilizing seats are evenly distributed circumferentially around the center of the positioning seat. A locking seat that matches the stabilizing seat is fixed on the side of the positioning seat, and a positioning pin is connected between the locking seat and the stabilizing seat at the corresponding position.

4. The pressure detection device for canned food products according to claim 1, characterized in that, The upper positioning element includes a connecting frame fixed to the telescopic end of the vertical cylinder. The connecting frame is an inverted U-shape. A horizontal plate is connected to both vertical sections of the connecting frame. A vertical column is fixed to the bottom of the horizontal plate. Multiple limiting posts are evenly arranged circumferentially on the side of the vertical column. A mounting sleeve is radially slidably connected to the limiting post. An arc-shaped gripper is fixed to the bottom of the mounting sleeve. A threaded protrusion is provided on the side of the vertical column. A rotating ring is connected to the vertical column at the position corresponding to the threaded protrusion. An adjusting ring is rotatably installed at the bottom of the rotating ring. A connecting rod is hinged to the circumferentially of the adjusting ring, and the connecting rod is hinged to the corresponding mounting sleeve. A detection structure for detecting the deformation of the food can under pressure is provided on the vertical column.

5. The pressure detection device for canned food products according to claim 4, characterized in that, The detection structure includes a vertical stud threaded onto a horizontal plate, a square column rotatably mounted on the bottom of the vertical stud, the square column being vertically slidably connected inside the vertical column, a mounting plate fixed to the bottom of the square column, and multiple telescopic rods evenly arranged circumferentially on the right side of the mounting plate. Pressure sensors are installed on the telescopic ends of the telescopic rods, and a vertical rod is fixed to the telescopic end of each telescopic rod. An arc-shaped gripper on the corresponding position on the right side is connected to an arc-shaped sleeve via an L-shaped connecting rod, and the arc-shaped sleeve is slidably connected to the vertical rod.

6. The pressure detection device for canned food products according to claim 1, characterized in that, The adjusting element includes a longitudinal slide rail fixed to the top of the detection platform. A movable sleeve is connected to the longitudinal slide rail via an electric slider. An embedded rod that is hinged to the connecting element is horizontally slidably connected inside the movable sleeve. A limiting structure for limiting the connecting element is provided at the top of the detection platform and on the left side of the longitudinal slide rail.

7. The pressure detection device for canned food products according to claim 6, characterized in that, The limiting structure includes two limiting slide rails fixed to the top of the detection platform. Both limiting slide rails are arc-shaped and concentrically distributed with the vertical cylinder as the center. The corresponding central angles of the two limiting slide rails are equal. The two limiting slide rails are connected to the connecting element through limiting sliders.

8. The pressure detection device for canned food products according to claim 7, characterized in that, The connecting element includes a connecting plate hinged to the embedded rod. A radial slide rail connected to two limiting sliders is fixed on the left side of the connecting plate. A drive plate is slidably connected on the radial slide rail. A cylinder is installed on the left side of the connecting plate. The telescopic end of the cylinder is fixedly connected to the drive plate. The drive plate is connected to the arc-shaped pressing block through a locking structure.

9. A pressure detection device for canned food products according to claim 8, characterized in that, The locking structure includes a transmission plate rotatably mounted on the left end of the drive plate, the transmission plate being fixedly connected to an arc-shaped pressing block, a locking mating plate being fixed on the inner arc surface of the arc-shaped pressing block above the transmission plate, an L-shaped fixing plate being fixed on the top of the drive plate, a locking rod being vertically slidably connected to the horizontal section of the L-shaped fixing plate, a locking hole with an flared upper end being opened on the locking mating plate corresponding to the position of the locking rod, a return spring being connected between the horizontal section of the locking mating plate and the L-shaped fixing plate, and unlocking components for unlocking the locking structure being provided on the front and rear sides of the drive plate and the top of the detection platform.

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