Strength detection device for plastic tablecloth

Abstract

The utility model relates to the technical field of tablecloth quality inspection, and discloses a plastic tablecloth strength detection device which comprises a fixed base, mounting holes are formed between the upper side wall and the lower side wall of the four corners of the fixed base, and two tablecloth fixing mechanisms are symmetrically arranged on one side of the top wall of the fixed base. A traction detection mechanism is arranged on the other side of the top wall of the fixed base and comprises two hydraulic driving shafts and tension sensors fixedly connected to the movable ends of the hydraulic driving shafts. The upper pressing block is designed to be of a movable lifting structure, the upper pressing block is driven to ascend and descend through the rotating screw rod structure, the upper pressing block can be kept to be self-locked when the screw rod structure is not rotated, it is guaranteed that the upper pressing block is reliably attached to the lower pressing block fixedly designed, the stability is good after tablecloth is fixed, and the stability of the tablecloth is improved. And the tablecloth is not easy to fall off when being pulled and pulled by matching with the meshed pressing blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of tablecloth quality inspection, in particular to a strength detection device for a plastic tablecloth. Background Art

[0002] Tablecloths, also known as tablecloths, are items that cover tabletops and desktops to prevent dirt or increase beauty. According to the production process, plastics include PVC tablecloths, EVA tablecloths, PEVA tablecloths, hot stamping tablecloths, cotton-based PVC tablecloths, PP tablecloths and other polyethylene tablecloths, and cast film tablecloths. At present, when inspecting the quality of plastic tablecloths, it is necessary to test their tear strength, and thus a strength testing device for plastic tablecloths is needed.

[0003] The existing plastic tablecloth strength detection device still has the following problems when in use: when the existing plastic tablecloth strength detection device is used to fix the plastic tablecloth, its tablecloth fixing structure mostly uses two flat bonding blocks to press and fix the tablecloth, and there is no self-locking structure when the bonding blocks are driven and pressed, so the tablecloth is easily caused to fall off when the tablecloth is pulled. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a strength detection device for a plastic tablecloth, which solves the problems raised by the background technology.

[0006] 2. Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic tablecloth strength detection device, comprising a fixed base, mounting holes are opened between the upper and lower side walls at the four corners of the fixed base, two tablecloth fixing mechanisms are symmetrically arranged on one side of the top wall of the fixed base, and a traction detection mechanism is arranged on the other side of the top wall of the fixed base, the traction detection mechanism comprises two hydraulic drive shafts and a tension sensor fixedly connected to the movable end of the hydraulic drive shaft, one detection end of the tension sensor is fixedly connected to the tablecloth fixing mechanism on the other side, the tablecloth fixing mechanism comprises a U-shaped frame, the other side of the U-shaped frame is fixedly connected to the tension sensor detection end, and a group of bottom walls of the U-shaped frame are fixedly connected to the fixed base through two connecting seats symmetrically arranged front and back.

[0008] As a further solution of the utility model: a lower pressing block is fixedly connected to the inner bottom wall of the U-shaped frame, an upper pressing block is meshed on the top of the lower pressing block, a plurality of toothed blocks are equidistantly provided on the bottom wall of the upper pressing block, and a plurality of toothed grooves are provided on the top wall of the lower pressing block corresponding to the bottom wall of the upper pressing block.

[0009] As a further solution of the utility model: a thread groove is opened in the middle of the top wall of the U-shaped frame, a screw is threadedly connected in the thread groove, a lower pressure block is connected to the bottom of the screw through a rotating shaft seat, and a positioning lifting mechanism is set at the front and rear ends of the lower pressure block.

[0010] As a further solution of the utility model: the positioning and lifting mechanism includes positioning grooves opened at the front and rear ends of the top wall of the U-shaped frame, a positioning rod is slidably connected in the positioning groove, the bottom end of the positioning rod is fixedly connected to the upper pressure block, the rotating shaft seat is fixedly connected to the center position of the top wall of the upper pressure block, the top rotating end of the rotating shaft seat is fixedly connected to a screw, and the top of the screw is fixedly connected to a shift block.

[0011] As a further solution of the utility model: the traction detection mechanism also includes a hydraulic driver fixedly connected to the other side of the top wall of the fixed base in a front-to-back symmetrical shape, a control line is arranged on the other side of the hydraulic driver, and the hydraulic drive shaft is arranged on one side of the hydraulic driver.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, two sets of tablecloth fixing mechanisms are symmetrically arranged, and each set of tablecloth fixing mechanisms includes two upper and lower meshing toothed pressing blocks. When a corner of the tablecloth is placed between the two upper and lower meshing pressing blocks for pressing and fixing, the pressing and fixing anti-slip performance of the tablecloth is better.

[0014] 2. In the utility model, the upper pressing block is designed as a movable lifting structure, and the upper pressing block is driven to rise and fall by a rotating screw structure. When the screw structure is not rotated, the upper pressing block can be kept self-locking to ensure reliable fit with the fixed pressing block below. The stability of the tablecloth after fixation is better, and the pressing block with meshing arrangement can ensure that the tablecloth is not easy to fall off when pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall stereogram of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the traction detection mechanism of the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the tablecloth fixing mechanism of the utility model;

[0018] Figure 4 This is a disassembled stereoscopic diagram of the tablecloth fixing mechanism components of the present invention.

[0019] In the figure: 1. fixed base; 2. connecting seat; 3. tablecloth fixing mechanism; 4. mounting hole; 5. hydraulic driver; 6. hydraulic drive shaft; 7. tension sensor; 8. control line; 31. U-shaped frame; 32. lower pressure block; 33. upper pressure block; 34. threaded groove; 35. positioning groove; 36. positioning rod; 37. shaft seat; 38. screw rod; 39. shift block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that the tension sensor 7 is a prior art and common knowledge to those skilled in the art, and will not be described in detail here.

[0022] See also Figures 1 to 4 In an embodiment of the utility model, a strength detection device for a plastic tablecloth comprises a fixed base 1, wherein mounting holes 4 are provided between upper and lower side walls at four corners of the fixed base 1, two tablecloth fixing mechanisms 3 are symmetrically arranged on one side of the top wall of the fixed base 1, and a traction detection mechanism is arranged on the other side of the top wall of the fixed base 1, wherein the traction detection mechanism comprises two hydraulic drive shafts 6 and a tension sensor 7 fixedly connected to the movable end of the hydraulic drive shaft 6, wherein one detection end of the tension sensor 7 is fixedly connected to the tablecloth fixing mechanism 3 on the other side, wherein the tablecloth fixing mechanism 3 comprises a U-shaped frame 31, wherein the U-shaped frame 31 on the other side is fixedly connected to the detection end of the tension sensor 7, wherein a group of bottom walls of the U-shaped frame 31 are fixedly connected to the fixed base 1 through two connecting seats 2 symmetrically arranged in a front-to-back manner, wherein two groups of tablecloth fixing mechanisms 3 are symmetrically arranged as a whole, and after the tablecloth is fixed by the two tablecloth fixing mechanisms 3, the tension sensor 7 can be driven to move via the hydraulic drive shaft 6, thereby driving the movable tablecloth fixing mechanism 3 to move, thereby realizing the tearing of the tablecloth until it is torn off, recording the data of the tension sensor 7, and analyzing the tearing strength of the tablecloth.

[0023] A lower pressing block 32 is fixedly connected to the inner bottom wall of the U-shaped frame 31, and an upper pressing block 33 is meshed with the top of the lower pressing block 32. A plurality of toothed blocks are equidistantly provided on the bottom wall of the upper pressing block 33, and a plurality of toothed grooves are provided on the top wall of the lower pressing block 32 corresponding to the bottom wall of the upper pressing block 33. Each set of tablecloth fixing mechanisms 3 includes two toothed pressing blocks meshed up and down. When a corner of the tablecloth is placed between the two upper and lower meshing pressing blocks for press-fixing, the tablecloth has better anti-slip performance when pressed and fixed.

[0024] A threaded groove 34 is provided in the middle of the top wall of the U-shaped frame 31, and a screw 38 is connected to the inner thread of the threaded groove 34. The bottom of the screw 38 is connected to a lower pressing block 32 through a rotating shaft seat 37. Positioning and lifting mechanisms are provided at the front and rear ends of the lower pressing block 32. The upper pressing block is designed as a movable lifting structure, and the upper pressing block is driven to rise and fall by the rotating screw 38 structure. The upper pressing block can be kept self-locking when the screw 38 structure is not rotated to ensure reliable fit with the fixed pressing block below. The stability of the tablecloth after fixing is better, and the pressing block with the meshing arrangement can ensure that the tablecloth is not easy to fall off when being pulled.

[0025] The positioning and lifting mechanism includes positioning grooves 35 opened at the front and rear ends of the top wall of the U-shaped frame 31, and a positioning rod 36 is slidably connected in the positioning groove 35. The bottom end of the positioning rod 36 is fixedly connected to the upper pressure block 33, and the shaft seat 37 is fixedly connected to the center position of the top wall of the upper pressure block 33. The top rotating end of the shaft seat 37 is fixedly connected to a screw rod 38, and a shift block 39 is fixedly connected to the top of the screw 38. The two upper pressure blocks 33 are designed as a liftable structure, and the upper pressure blocks 33 can be lifted and lowered by holding the shift block 39 and rotating the screw 38.

[0026] The traction detection mechanism also includes a hydraulic driver 5 which is fixedly connected to the other side of the top wall of the fixed base 1 in a front-to-back symmetrical shape, a control line 8 is provided on the other side of the hydraulic driver 5, and the hydraulic drive shaft 6 is provided on one side of the hydraulic driver 5, and the hydraulic drive shaft 6 can be driven to move by the hydraulic driver 5.

[0027] The working principle of the utility model is as follows: each set of tablecloth fixing mechanism 3 includes two toothed pressing blocks meshing up and down. When a corner of the tablecloth is placed between the two meshing pressing blocks for pressing and fixing, the pressing and fixing anti-skid performance of the tablecloth is better. The upper pressing block is designed as a movable lifting structure, and the upper pressing block is driven to lift by a rotating screw 38 structure. The upper pressing block can be kept self-locking when the screw 38 structure is not rotated to ensure reliable fit with the fixed pressing block below. The stability after the tablecloth is fixed is better. The pressing blocks arranged in meshing can ensure that the tablecloth is not easy to fall off when pulled and pulled. The hydraulic drive shaft 6 can be driven to move by the hydraulic driver 5. The two sets of tablecloth fixing mechanisms 3 are symmetrically arranged as a whole. After the tablecloth is fixed by the two tablecloth fixing mechanisms 3, the tension sensor 7 can be driven to move via the hydraulic drive shaft 6, thereby driving the movable tablecloth fixing mechanism 3 to move, so as to realize the pulling of the tablecloth until it is torn off, record the data of the tension sensor 7, and analyze the tear strength of the tablecloth.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic tablecloth strength detection device, comprising a fixed base (1), two tablecloth fixing mechanisms (3) are symmetrically arranged on one side of the top wall of the fixed base (1), and a traction detection mechanism is arranged on the other side of the top wall of the fixed base (1); Features: The traction detection mechanism comprises two hydraulic drive shafts (6) and a tension sensor (7) fixedly connected to the movable end of the hydraulic drive shaft (6), wherein a detection end of one end of the tension sensor (7) is fixedly connected to a tablecloth fixing mechanism (3) on the other side; The tablecloth fixing mechanism (3) comprises a U-shaped frame (31), the inner bottom wall of the U-shaped frame (31) is fixedly connected with a lower pressing block (32), the top of the lower pressing block (32) is meshed with an upper pressing block (33), and a threaded groove (34) is provided in the middle of the top wall of the U-shaped frame (31); The thread groove (34) is internally threadedly connected to a screw rod (38), the bottom of the screw rod (38) is connected to a lower pressing block (32) via a rotating shaft seat (37), and positioning lifting mechanisms are provided at the front and rear ends of the lower pressing block (32).

2. The strength detection device for a plastic tablecloth according to claim 1, characterized in that: The traction detection mechanism further comprises a hydraulic driver (5) fixedly connected to the other side of the top wall of the fixed base (1) in a front-to-back symmetrical manner, and a control line (8) is arranged on the other side of the hydraulic driver (5).

3. The strength detection device for a plastic tablecloth according to claim 1, characterized in that: The hydraulic drive shaft (6) is arranged on one side of the hydraulic driver (5), and mounting holes (4) are provided between the upper and lower side walls at four corners of the fixed base (1).

4. The strength detection device for a plastic tablecloth according to claim 1, characterized in that: The U-shaped frame (31) on the other side is fixedly connected to the detection end of the tension sensor (7), and a group of bottom walls of the U-shaped frame (31) are fixedly connected to the fixed base (1) via two connection seats (2) arranged symmetrically in the front and rear.

5. The strength detection device for a plastic tablecloth according to claim 1, characterized in that: The bottom wall of the upper pressing block (33) is provided with a plurality of tooth-shaped blocks at equal intervals, and the top wall of the lower pressing block (32) is provided with a plurality of tooth-shaped grooves corresponding to the bottom wall of the upper pressing block (33).

6. The strength detection device for a plastic tablecloth according to claim 1, characterized in that: The positioning and lifting mechanism comprises positioning grooves (35) formed at the front and rear ends of the top wall of the U-shaped frame (31), a positioning rod (36) being slidably connected in the positioning groove (35), and the bottom end of the positioning rod (36) being fixedly connected to the upper pressing block (33).

7. The strength detection device for a plastic tablecloth according to claim 1, characterized in that: The rotating shaft seat (37) is fixedly connected to the center position of the top wall of the upper pressing block (33); the top rotating end of the rotating shaft seat (37) is fixedly connected to a screw rod (38); and the top of the screw rod (38) is fixedly connected to a shifting block (39).

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