Automatic length measuring device of bag cutting machine

Abstract

The utility model provides an automatic length measuring device of a bag cutting machine, and relates to the technical field of bag cutting machines. The automatic length measuring device of the bag cutting machine comprises a table top, one end of the table top is elastically connected with a clamping plate, and the two sides of the table top are symmetrically and fixedly connected with vertical frames; two lifting assemblies are symmetrically arranged on the table top, and two smoothing rollers are symmetrically connected between the lifting assemblies in a sliding mode. A stretching assembly is fixedly connected to the vertical frame, a measuring assembly is erected between the two lifting assemblies, and the stretching assembly is used for outwards pushing the two smoothing rollers to move away from each other in the lifting assemblies so as to conduct smoothing operation on the cloth bag; the stretching assembly is used for pulling back the two smoothing rollers to get close to each other in the lifting assembly till the lifting assembly is lifted up from the table top, a cloth bag is conveniently placed, one end of the cloth bag is fixed to one end of the table top through the elastically-connected clamping plates, the cloth bag is conveniently positioned, and the measuring end of the measuring assembly is slidably arranged, so that the cloth bag can be accurately measured. And the cloth bag can be conveniently measured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bag cutting machines, in particular to a length automatic measuring device of a bag cutting machine. BACKGROUND

[0002] In the prior art, for example, the length measuring device for automatic bag cutting machine disclosed in publication No. CN220039410U includes a measuring plate, the front of both sides of the top of the measuring plate is bolted with a first fixed plate, the inner side of the first fixed plate is bolted with a sliding rod, the surface of the sliding rod is slidingly connected with a sliding block, the back of the sliding block is bolted with a baffle, the rear of both sides of the top of the measuring plate is bolted with a second fixed plate, the front of the inner side of the second fixed plate is rotatably connected with a lead screw through a bearing, the right side of the lead screw is bolted with a handle through the second fixed plate, and the surface of the lead screw is threadedly connected with an internal thread piece.

[0003] In this scheme, the handle is rotated to drive the lead screw to rotate, so that the internal thread piece drives the measuring rod to move axially, which has the functions of quick adjustment and self-locking. Through the rotating mode, the adjustment rate can be effectively improved, the stability of use can be ensured, and the problems of low measurement accuracy and poor use stability of the length measuring device are avoided.

[0004] However, in this scheme, two smoothing rollers are needed to smooth the cloth bag, but in this scheme, the smoothing rollers cannot change in height relative to the measuring plate, so the applicability of this scheme to cloth bags of different thicknesses is limited. Secondly, it is difficult to place the cloth bag between the smoothing rollers and the measuring plate. In this scheme, there is a certain gap between the measuring rod and the cloth bag in order for the measuring rod to pass over the smoothing roller, which requires a large gap between the measuring rod and the measuring scale or between the measuring rod and the cloth bag, which makes it difficult to read the measurement value and affects the accuracy of the measurement result. INVENTION CONTENTS

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a length automatic measuring device of a bag cutting machine, which aims to improve the problem of small applicability range of the smoothing roller and the influence on the accuracy of the measurement result of the existing length automatic measuring device of a bag cutting machine.

[0006] The present application provides a length automatic measuring device of a bag cutting machine, which includes a table top, wherein one end of the table top is elastically connected with a clamping plate, and two vertical supports are symmetrically fixed to both sides of the table top; two groups of lifting assemblies are symmetrically arranged on the table top, two smoothing rollers are symmetrically slidingly connected between the two groups of lifting assemblies; a stretching assembly is fixed to the vertical support, and the movable ends of the stretching assembly are rotatably connected with the two smoothing rollers; a measuring assembly is arranged between the two groups of lifting assemblies, and the measuring end of the measuring assembly is slidingly arranged along the length direction of the lifting assembly.

[0007] According to the length automatic measuring device of the bag cutting machine, the two smoothing rollers are pushed outward by the stretching assembly to move away from each other in the lifting assembly to perform the smoothing operation on the cloth bag, the two smoothing rollers are pulled back by the stretching assembly to move close to each other in the lifting assembly until the lifting assembly is lifted from the table top, the cloth bag is placed, one end of the cloth bag is fixed to one end of the table top by the elastic clamping plate, the cloth bag is positioned, the sliding of the measuring end of the measuring assembly is facilitated, and the cloth bag is measured.

[0008] In addition, the length automatic measuring device of the bag cutting machine has the following additional technical features.

[0009] In some specific embodiments of the present application, the table top is provided with a recess, and the clamping plate is elastically and slidably connected to the recess.

[0010] In some specific embodiments of the present application, the clamping plate is L-shaped, the bottom side of the clamping plate is fixedly connected with a pull rod and two slide rods, the pull rod and the two slide rods respectively slide through the side walls of the recess, and a spring is sleeved on one end of the slide rod in the recess.

[0011] In some specific embodiments of the present application, the lifting assembly includes a lifting fence arranged along the length direction of the table top, two guide rods are slidably inserted into both ends of the lifting fence, and the two guide rods are fixedly connected to the table top.

[0012] In some specific embodiments of the present application, two sliding grooves are symmetrically arranged on the lifting fence, and the two smoothing rollers are symmetrically slid in the two sliding grooves.

[0013] In some specific embodiments of the present application, the stretching assembly fixedly connected to the stand includes a telescopic piece and two connecting rods, one end of the telescopic piece is fixedly connected to the stand, the other end of the telescopic piece is rotatably connected with the two connecting rods, respectively, and one end of the two connecting rods away from the telescopic piece is rotatably connected with the two smoothing rollers, respectively.

[0014] In some specific embodiments of the present application, the telescopic piece is arranged along the height direction of the table top and located at the middle of the lifting fence, and the lengths of the two connecting rods are consistent.

[0015] In some specific embodiments of the present application, the measuring assembly includes two fixed bars symmetrically fixed to the upper end surface of the lifting fence, the upper end surface of the fixed bar is fixedly connected with a scale, and the measuring end of the measuring assembly is an indicating bar, the two ends of the indicating bar are slidably connected with the two scales, respectively. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. Other related drawings can also be obtained by those of ordinary skill in the art without creative labor on the basis of these drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of a length automatic measuring device of a bag cutting machine according to an embodiment of the present application;

[0018] Figure 2 is an exploded view of the local structure of a length automatic measuring device of a bag cutting machine according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of the structure of a positioning cavity according to an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of the structure of a limiting piece according to an embodiment of the present application.

[0021] Figure legend: 1, table top; 11, clamping plate; 12, stand; 13, recess; 14, pull rod; 15, sliding rod; 16, spring; 2, lifting assembly; 21, lifting fence; 211, sliding groove; 22, guide rod; 3, smoothing roller; 31, telescopic piece; 32, connecting rod; 4, measuring assembly; 41, fixed bar; 42, scale; 43, indicating bar. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0023] As shown in Figures 1-4 , a length automatic measuring device of a bag cutting machine according to an embodiment of the present application comprises a table top 1, wherein one end of the table top 1 is elastically connected with a clamping plate 11. Specifically, as shown in Figure 1 and Figure 2As shown, the table top 1 is provided with a recess 13, the clamping plate 11 is arranged in L shape, the bottom side of the clamping plate 11 is fixedly connected with a pull rod 14 and two slide rods 15, the pull rod 14 and the two slide rods 15 respectively slide through the side wall of the recess 13, and the slide rod 15 located at one end of the recess 13 is sleeved with a spring 16, so that pulling the pull rod 14 can make the clamping plate 11 displace outward along the end of the table top 1, at this time, the spacing of the recess 13 is leaked, and it is convenient to place one end of the cloth bag in the recess 13 and clamp the cloth bag by the elasticity of the spring 16.

[0024] As shown in Figure 1 and Figure 3 , the table top 1 is provided with two groups of lifting assemblies 2 symmetrically, the lifting assembly 2 comprises a lifting fence 21 arranged along the length direction of the table top 1, two guide rods 22 are slidingly inserted at both ends of the lifting fence 21, and the two guide rods 22 are fixedly connected to the table top 1. Two slide grooves 211 are symmetrically arranged on the lifting fence 21, and two smoothing rollers 3 are symmetrically slid in the two slide grooves 211, so that the lifting fence 21 can be lifted relative to the table top 1 along the axial direction of the guide rod 22.

[0025] As shown in Figure 1 and Figure 3 , two smoothing rollers 3 are symmetrically and slidingly connected between the two groups of lifting assemblies 2, which are used for smoothing the cloth bag and improving the measurement accuracy of the cloth bag.

[0026] As shown in Figure 1 and Figure 3 , two stands 12 are symmetrically fixed to the two sides of the table top 1; a stretching assembly is fixedly connected to the stand 12, and the movable end of the stretching assembly is rotatably connected to the two smoothing rollers 3. Specifically, the stretching assembly fixedly connected to the stand 12 comprises a telescopic piece 31 and two connecting rods 32, one end of the telescopic piece 31 is fixedly connected to the stand 12, the other end of the telescopic piece 31 is rotatably connected to the two connecting rods 32, and the ends of the two connecting rods 32 away from the telescopic piece 31 are rotatably connected to the two smoothing rollers 3. It should be noted that the telescopic piece 31 is arranged along the height direction of the table top 1 and located at the center of the lifting fence 21, and the lengths of the two connecting rods 32 are consistent. Therefore, when the telescopic piece 31 is elongated, it will drive the two connecting rods 32 to displace downward and simultaneously make the two connecting rods 32 rotate at the hinge between the two connecting rods 32 and the telescopic piece 31, that is, the angle formed by the two connecting rods 32 and the telescopic piece 31 gradually expands, and then the two connecting rods 32 drive the two smoothing rollers 3 to move away from each other along the corresponding slide grooves 211. During this process, the gravity and the downward pressure applied by the connecting rod 32 will make the lifting fence 21 tightly adhere to the table top 1, and the two smoothing rollers 3 will realize the smoothing action on the cloth bag.

[0027] It should be noted that the diameter of the smoothing roller 3 is greater than the height of the lifting fence 21, that is, when the smoothing roller 3 is close to the table top 1, a gap is left between the bottom end of the lifting fence 21 and the table top 1.

[0028] Conversely, when the telescopic member 31 is retracted, the angle between the two connecting rods 32 and the hinge of the lifting member 31 is gradually reduced, until the two smoothing rollers 3 are close to each other to the limit, and with the continuous retraction of the telescopic member 31, the lifting fence 21 is lifted, so that the distance between the lifting fence 21 and the table top 1 is larger (at the same time, the smoothing roller 3 is separated from the table top 1), which facilitates the placement of the bag.

[0029] It should be noted that in the specific embodiments of the present application, the telescopic member 31 can be a hydraulic cylinder, an electric push rod or other prior art with telescopic function.

[0030] It should be further noted that in another embodiment of the present application, the guide rod 22 is fixedly sleeved with an elastic member, one end of the elastic member abuts against the upper end surface of the lifting fence 21, and the other end of the elastic member (not shown in the figure) abuts against the guide rod 22 (an annular fixing member can be added to the guide rod 22 to facilitate the positioning of the elastic member), which further facilitates the abutment of the lifting fence 21 to the table top 1, thereby improving the pressure of the smoothing roller 3 on the bag, which is helpful for the smoothing operation of the smoothing roller 3 on the bag.

[0031] As shown in Figure 1 and Figure 4 , a measuring assembly 4 is arranged between the two lifting assemblies 2, and the measuring end of the measuring assembly 4 is slidably arranged along the length direction of the lifting assembly 2, wherein the measuring assembly 4 comprises two fixed bars 41 symmetrically fixed to the upper end surface of the lifting fence 21, the upper end surface of the fixed bar 41 is fixedly connected with a scale 42, and the measuring end of the measuring assembly 4 is an indicating bar 43, the two ends of the indicating bar 43 are respectively slidably connected to the two scales 42, and it should be noted that the indicating bar 43 can only slide on the scale 42 and cannot perform a swing action, so as to ensure the measurement accuracy.

[0032] It should be noted that the starting end of the scale 42 is flush with the side of the recess 13 away from the end of the table top 1, which facilitates the measurement of the bag.

[0033] Thus, in actual use, the telescopic member 31 is used to pull the connecting rod 32 upward until the lifting fence 21 is pulled upward, at which time the flattening roller 3 is separated from the table top 1, then the clamping plate 11 is pulled outward, one end of the cloth bag is placed in the gap between the clamping plate 11 and the recessed portion 13, then the pull rod 14 is released, the clamping plate 11 is clamped and fixed on the table top 1 by the elastic force of the spring 16, the other end of the cloth bag passes through the bottom end of the flattening roller 3, then the telescopic member 31 is extended downward, the lifting fence 21 is lowered and abuts on the table top 1, the telescopic member 31 continues to descend, the two connecting rods 32 will have an action of increasing the angle at the hinge between themselves and the telescopic member 31, and exert an outward and downward pressure on the two flattening rollers 3, so that the two flattening rollers 3 are pressed on the cloth bag, and as the lifting member 31 continues to descend, the two flattening rollers 3 move away from each other, and the cloth bag is flattened, then the moving indicator 43 is moved, and the measured value is read by the indicating position of the indicator 43 on the scale 42.

[0034] It should be noted that the specific model and specifications of the spring 16, the telescopic member 31 and the scale 42 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in the art, so it will not be described in detail.

[0035] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic length measuring device for a bag cutting machine, comprising a table (1), characterized in that: One end of the tabletop (1) is elastically connected to a clamp (11), and uprights (12) are symmetrically fixed to both sides of the tabletop (1). Two sets of lifting components (2) are symmetrically arranged on the platform (1), and two smoothing rollers (3) are symmetrically slidably connected between the two sets of lifting components (2); A tensioning assembly is fixedly connected to the upright frame (12), and the movable end of the tensioning assembly is rotatably connected to the two smoothing rollers (3); A measuring component (4) is installed between the two sets of lifting components (2), and the measuring end of the measuring component (4) is slidably arranged along the length direction of the lifting component (2).

2. The automatic length measuring device for a bag cutting machine as described in claim 1, characterized in that, The tabletop (1) is provided with a recess (13), and the clamp (11) is elastically slidably connected to the recess (13).

3. The automatic length measuring device for a bag cutting machine as described in claim 2, characterized in that, The clamp (11) is L-shaped. A pull rod (14) and two slide rods (15) are fixed to the bottom side of the clamp (11). The pull rod (14) and the two slide rods (15) slide through the side wall of the recess (13). A spring (16) is sleeved on one end of the slide rod (15) located in the recess (13).

4. The automatic length measuring device for a bag cutting machine as described in claim 1, characterized in that, The lifting assembly (2) includes a lifting gate (21) arranged along the length of the platform (1), and two guide rods (22) are slidably inserted at both ends of the lifting gate (21), and the two guide rods (22) are fixed to the platform (1).

5. The automatic length measuring device for a bag cutting machine as described in claim 4, characterized in that, The lifting fence (21) is symmetrically provided with two sliding grooves (211), and the two smoothing rollers (3) slide symmetrically in the two sliding grooves (211).

6. The automatic length measuring device for a bag cutting machine as described in claim 4, characterized in that, The tensioning assembly fixed to the upright (12) includes a telescopic member (31) and two connecting rods (32). One end of the telescopic member (31) is fixed to the upright (12), and the other end of the telescopic member (31) is rotatably connected to the two connecting rods (32). The ends of the two connecting rods (32) away from the telescopic member (31) are rotatably connected to the two smoothing rollers (3).

7. The automatic length measuring device for a bag cutting machine as described in claim 6, characterized in that, The telescopic component (31) is arranged along the height direction of the platform (1) and located at the center of the lifting fence (21), and the two connecting rods (32) have the same length.

8. The automatic length measuring device for a bag cutting machine as described in claim 4, characterized in that, The measuring component (4) includes two fixed strips (41) symmetrically fixed to the upper surface of the lifting fence (21). A scale (42) is fixed to the upper surface of the fixed strip (41). The measuring end of the measuring component (4) is an indicator strip (43). The two ends of the indicator strip (43) are slidably connected to the two scales (42).

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