Automatic slitting device for producing degradable shopping bags

Abstract

The utility model discloses an automatic slitting device for producing degradable shopping bags, and relates to the technical field of plastic bag production equipment, the automatic slitting device comprises a top plate and a telescopic device fixedly connected to the top plate, the output end of the telescopic device is fixedly connected with a supporting plate, and the bottom of the supporting plate is fixedly connected with a heating module. The bottom of the heating module is fixedly connected with a cutting edge, and a moving frame and a rotating roller are symmetrically arranged at the bottom of the cutting edge. According to the automatic slitting device for producing the degradable shopping bag, the push plate and the one-way rotating device part are arranged at the bottom of the cutting edge, so that adhered objects on the cutting edge can be scraped off, the problem that subsequent use is affected due to the fact that plastic chippings are adhered to a knife face when a plastic bag material belt is cut by the cutting edge is solved, and meanwhile, the cutting edge is convenient to use. And the push plate can push the solids out of the storage tank, so that the situation of accumulation and blockage caused by excessive solids in the storage tank can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag production equipment, and more specifically to an automatic cutting device for producing degradable shopping bags. Background Art

[0002] Plastic bags, usually made of synthetic resins such as polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC), are widely used in daily life and industrial packaging materials. Plastic bags are widely used in food packaging, shopping, garbage collection, clothing sorting and other fields around the world because of their lightness, durability, waterproofness and relatively low cost. With the current emphasis on the environment, degradable shopping bags have been widely used. Degradable plastic bags are a new type of environmentally friendly packaging product designed to replace traditional disposable plastic bags to reduce the burden on the environment. This type of plastic bag uses special bio-based or chemically modified materials in the design and manufacturing process, so that it can be decomposed into harmless substances by microorganisms, light, heat and other factors in the natural environment under certain conditions.

[0003] When plastic bags are produced now, slitting devices are usually used to cut them into complete plastic bags that can be used individually. In order to ensure neat and rapid cutting, hot cutting is usually used. Although the heated cutting blade will partially melt the plastic, making it easier to cut, plastic debris will adhere to the cutting blade. The molten plastic part will continue to adhere to the hot cutting tool and cannot fall off by itself. The adhesion will affect subsequent cutting, and there is also a risk of dripping on the plastic bag, which requires manual cleaning.

[0004] A plastic bag hot cutting machine is disclosed in the Chinese utility model patent application number: CN217993671U, the structure of which includes a main body, a support leg fixedly mounted on the lower surface of the main body, a first fixing device fixedly mounted on the upper surface of the main body, a rubber pad fixedly mounted on the upper surface of the main body, a first support frame fixedly mounted on the upper surface of the main body, and a first electric push rod fixedly mounted on the inner side of the first support frame. Although the plastic bag hot cutting machine has hot cutting capability and can quickly and accurately cut plastic bags, since the plastic will melt after being heated, some plastic debris will stick to the cutting blade, thereby affecting subsequent cutting.

[0005] Therefore, it is necessary to propose an automatic cutting device for producing degradable shopping bags to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the utility model is to solve the problems raised in the above background technology and to provide an automatic cutting device for producing degradable shopping bags.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0010] An automatic slitting device for producing degradable shopping bags, comprising a top plate and a telescopic device fixedly connected to the top plate, wherein the output end of the telescopic device is fixedly connected to a support plate, the bottom of the support plate is fixedly connected to a heating module, the bottom of the heating module is fixedly connected to a cutting blade, and the bottom of the cutting blade is symmetrically provided with a moving frame and a rotating roller;

[0011] The outer wall of the rotating roller is provided with a grinding block in a circumferential array, and a material storage groove is opened between two adjacent grinding blocks. The interior of the rotating roller is provided with an annular cavity, and the material storage groove is slidably connected with a push plate, one end of the push plate is fixedly connected to a connecting rod extending into the annular cavity, and one end of the connecting rod located in the annular cavity is fixedly connected to an extrusion block. The outer wall of the connecting rod is sleeved with a spring located in the annular cavity, and a rotating rod is provided in the annular cavity, and an arc plate for pressing the extrusion block is fixedly connected to the rotating rod, and the arc plate is inclined to the moving frame on the same side, and both ends of the rotating rod are connected with a one-way rotating device, and the one-way rotating device includes a rotating core and a rotating shell, the rotating rod is fixedly connected to the rotating core, and the two ends of the rotating roller are fixedly connected to the rotating shell, and a rebound device is connected between the rotating rod and the moving frame.

[0012] Preferably, the rebound device includes a first guide column and a support seat, the first guide column is slidably connected to the inner wall of the support seat, a fixing plate is fixedly connected to the outer wall of the first guide column, a spring sleeved on the first guide column is connected between the fixing plate and the support seat, the end of the first guide column away from the rotating rod is fixedly connected to a limiting plate, and the support seat is fixedly connected to both ends of the movable frame.

[0013] Preferably, a synchronous bracket is fixedly connected between the symmetrical moving frames, a second guide column penetrating the support plate is fixedly connected to the top of the moving frame, and a spring located between the moving frame and the support frame is sleeved on the outer wall of the second guide column.

[0014] Preferably, the four bottom corners of the top plate are fixedly connected with third guide columns, and the support frame and the movable frame are slidably connected on the outer walls of the guide columns.

[0015] Preferably, the bottom end of the third guide column is fixedly connected to a bottom plate, and a cutting tool holder cooperating with the cutting blade is fixedly connected to the bottom plate.

[0016] Preferably, a material receiving frame extending to the bottom of the rotating roller is fixedly connected to a side opposite to the movable frame, the bottom of the material receiving frame is inclined toward the movable frame, and an anti-slip pad is fixedly connected to the bottom of the movable frame.

[0017] Preferably, the one-way rotation device also includes an arc-shaped piece and a one-way rotation block located between the rotating core and the rotating shell, the rotating core is provided with bevel teeth, one end of the one-way rotation block is rotatably connected to the rotating shell, the other end of the one-way rotation block is in contact with the bevel teeth, and the arc-shaped piece is in contact with the one-way rotation block.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The device is provided with a rotating roller and a one-way rotating device at the bottom of the cutting blade. When the cutting blade descends, the one-way rotating device is locked, thereby limiting the rotation of the rotating roller, so that the grinding block on the surface of the rotating roller can come into contact with the adhesion on the cutting blade, thereby scraping it off, solving the problem that when the cutting blade cuts the plastic bag material strip, there will be plastic debris adhering to the blade surface and affecting the subsequent hot cutting, avoiding the tedious steps of manual cleaning and reducing the labor intensity.

[0020] 2. This device has a material storage trough on the outer wall of the rotating roller. The scraped adhesive becomes solid after cooling and falls into the material storage trough as the rotating roller rotates. As the rotating roller rotates, the solid is pushed out of the material storage trough by the push plate and falls on the receiving rack, which has the function of cleaning the cleaned solid. At the same time, the action of the push plate pushing the solid out of the material storage trough can prevent the solids in the material storage trough from accumulating and clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the structure of the utility model;

[0023] Figure 3 It is a three-dimensional schematic diagram of the connection structure between the mobile frame and the rebound device in the utility model;

[0024] Figure 4 It is a three-dimensional schematic diagram of the connection structure between the moving frame and the material receiving frame in the utility model;

[0025] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the connection structure of the rebound device and the one-way rotation device in the utility model;

[0026] Figure 6 It is a cross-sectional schematic diagram of the distribution of the material storage trough and the annular cavity in the utility model;

[0027] Figure 7 It is a three-dimensional schematic diagram of the one-way rotating device in the utility model.

[0028] Reference numerals:

[0029] 101. top plate; 102. telescopic device; 103. support plate; 104. heating module; 105. cutting blade; 106. moving frame; 107. rotating roller; 108. grinding block; 109. material storage trough; 110. annular cavity; 111. push plate; 112. connecting rod; 113. extrusion block; 114. rotating rod; 115. arc plate; 116. one-way rotating device; 117. rotating core; 118. rotating shell; 119. rebound device; 120. first guide column; 121. support seat; 122. fixed plate; 123. limit plate; 124. synchronous bracket; 125. second guide column; 126. third guide column; 127. bottom plate; 128. cutting tool holder; 129. receiving frame; 130. arc sheet; 131. one-way rotating block. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-7 , an automatic slitting device for producing degradable shopping bags, comprising a top plate 101 and a telescopic device 102 fixedly connected to the top plate 101, the telescopic device 102 is used to push a support plate 103 to move up and down, the telescopic device 102 can be a device that can be extended such as an oil cylinder, an air cylinder, etc., the output end of the telescopic device 102 is fixedly connected to the support plate 103, the bottom of the support plate 103 is fixedly connected to a heating module 104, a cutting blade 105 is installed on the heating module 104, the cutting blade 105 is heated by the heating module 104, and the plastic bag material strip is convenient for hot cutting, the bottom of the heating module 104 is fixedly connected to the cutting blade 105, the bottom of the cutting blade 105 is symmetrically provided with a moving frame 106 and a rotating roller 107, and the rotating roller 107 is installed on the moving frame 106 through a rebound device 119;

[0032] refer to Figure 5 and Figure 6The outer wall of the rotating roller 107 is provided with grinding blocks 108 in a circumferential array. The surface of the grinding blocks 108 is rough. When the grinding blocks 108 come into contact with the surface of the cutting blade 105, the plastic debris adhered to the surface can be scraped off. When the cutting blade 105 loses contact with the rotating roller 107, the adhered matter on the grinding blocks 108 will be cooled and solidified. A storage groove 109 is provided between two adjacent grinding blocks 108. The storage groove 109 is used to store solidified matter. When the storage groove 109 is moved to a position where the opening faces downward, the solidified matter inside will roll down from the inside. The interior of the rotating roller 107 is provided with an annular cavity 110. The annular cavity 110 is used to store connecting rods 112, extrusion blocks 113 and arc-shaped plates 115. A push plate 111 is slidably connected in the storage groove 109. One end of the push plate 111 is fixedly connected to the connecting rod 112 extending into the annular cavity 110. One end of the connecting rod 112 located in the annular cavity 110 is fixedly connected to the extrusion block 113. The outer wall of the connecting rod 112 is sleeved with a spring located in the annular cavity 110. A rotating rod 114 is provided in the annular cavity 110. The rotating rod 114 is fixedly connected to the arc-shaped plate 115 for pressing the extrusion block 113. When the rotating roller 107 rotates, the arc-shaped plate 115 is pressed against the extrusion block 113. The extrusion block 113 is pressed down by the inclined surface, so that the extrusion block 113 pushes the push plate 111 out of the storage tank 109 through the connecting rod 112. The arc plate 115 is inclined to the mobile frame 106 on the same side. The two ends of the rotating rod 114 are connected with a one-way rotating device 116. The one-way rotating device 116 includes a rotating core 117, a rotating shell 118, an arc piece 130 and a one-way rotating block 131. The rotating core 117 is fixed on the rotating rod 114, and the rotating shell 118 is fixed on the rotating roller 107. When the cutting blade 105 is downward, the one-way rotating device 116 is locked. , that is, the one-way rotating block 131 presses the rotating core 117 through the bevel teeth. When the cutting blade 105 rises, the rotating core 117 reverses, and the one-way rotating block 131 bounces on the surface of the bevel teeth. The arc-shaped piece 130 is used to push the one-way rotating block 131 to contact the bevel teeth on the rotating core 117. The one-way rotating device 116 includes a rotating core 117 and a rotating shell 118. The rotating rod 114 is fixedly connected to the rotating core 117, and the two ends of the rotating roller 107 are fixedly connected to the rotating shell 118. A rebound device 119 is connected between the rotating rod 114 and the movable frame 106.

[0033] Specifically, refer to Figure 5The rebound device 119 includes a first guide column 120 and a support seat 121. The first guide column 120 is connected to the movable frame 106 through the support seat 121. When the cutting blade 105 contacts the rotating roller 107, the rebound device 119 will be compressed, and the spring between the support seat 121 and the fixed plate 122 will be compressed. The first guide column 120 is slidably connected to the inner wall of the support seat 121. The fixed plate 122 is fixedly connected to the outer wall of the first guide column 120. A spring sleeved on the first guide column 120 is connected between the fixed plate 122 and the support seat 121. When the cutting blade 105 is disengaged from the rotating roller 107, the spring rebounds and the rotating roller 107 is reset. The end of the first guide column 120 away from the rotating rod 114 is fixedly connected to the limiting plate 123, and the support seat 121 is fixedly connected to both ends of the movable frame 106.

[0034] Specifically, refer to Figure 1 and Figure 5 A synchronous bracket 124 is fixedly connected between the symmetrical moving frames 106, and both ends of the synchronous bracket 124 are connected to the moving frames 106 to keep the symmetrical moving frames 106 in the same plane and the symmetrical rotating rollers 107 at the same height. The top of the moving frame 106 is fixedly connected with a second guide column 125 that passes through the support plate 103, and the outer wall of the second guide column 125 is provided with a spring located between the moving frame 106 and the support frame.

[0035] Specifically, refer to Figure 1 The four bottom corners of the top plate 101 are fixedly connected with third guide columns 126, and the support plate 103 and the movable frame 106 can move up and down along the third guide columns 126, and the support frame and the movable frame 106 are slidably connected on the outer wall of the guide columns.

[0036] Specifically, refer to Figure 1 The bottom end of the third guide column 126 is fixedly connected to a bottom plate 127 , on which a cutting tool holder 128 for cooperating with the cutting blade 105 for cutting is installed. The bottom plate 127 is fixedly connected to a cutting tool holder 128 for cooperating with the cutting blade 105 .

[0037] Specifically, refer to Figure 4 The opposite side of the symmetrical moving frame 106 is fixedly connected with a receiving frame 129 extending to the bottom of the rotating roller 107. The solidified material pushed out of the material storage trough 109 will fall on the receiving frame 129 to facilitate its cleaning. The bottom of the receiving frame 129 is inclined toward the moving frame 106, and the bottom of the moving frame 106 is fixedly connected with an anti-slip pad.

[0038] Specifically, refer to Figure 7The one-way rotating device 116 also includes an arc-shaped piece 130 and a one-way rotating block 131 located between the rotating core 117 and the rotating shell 118. The one-way rotating device 116 rotates when the cutting blade 105 rises, so that the adhesion can move upward together with the cutting blade 105, thereby avoiding the adhesion falling on the plastic bag. When the cutting blade 105 descends, the one-way rotating device 116 is locked, thereby scraping off the adhesion. The rotating core 117 is provided with bevel teeth, one end of the one-way rotating block 131 is rotatably connected to the rotating shell 118, and the other end of the one-way rotating block 131 is in contact with the bevel teeth, and the arc-shaped piece 130 is in contact with the one-way rotating block 131.

[0039] In this embodiment, the device can be placed at the part that needs to be cut during the production of plastic bags, the heating module 104 heats the cutting blade 105, and the two ends of the rotating roller 107 rotate on the rotating rod 114 through the one-way rotating device 116;

[0040] The plastic bag material belt passes between the mobile frame 106 and the bottom plate 127, and the output end of the telescopic device 102 drives the support plate 103 to move up and down. When the plastic bag material belt is cut, the telescopic device 102 is started, driving the support plate 103 and the mobile frame 106 to move downward along the third guide column 126. The anti-skid pad at the bottom of the mobile frame 106 will first contact the plastic bag material belt, and fix the two ends of the part to be cut to prevent the plastic bag material belt from being displaced during hot cutting. When the output end of the telescopic device 102 continues to extend, the support plate 103 continues to move downward, and the distance between the support plate 103 and the mobile frame 106 becomes smaller. At the same time, the spring between them is compressed, and the cutting is completed. When the cutting blade 105 moves downward, it will squeeze the contacting rotating roller 107 to both sides. At this time, the rotating roller 107 is restricted by the one-way rotating device 116 and will not rotate. The rebound devices 119 on both sides are compressed. After the cutting blade 105 passes through the range of the rotating roller 107 and the receiving frame 129, it will contact the cutting knife frame 128, thereby performing a hot cutting action on the plastic bag material strip. After cutting, the output end of the telescopic device 102 retracts, and the output end drives the support plate 103 to rise. The moving frame 106 at the bottom of the support plate 103 is separated from the cut plastic bag. When the cutting blade 105 moves upward, the rotating roller 107 loses the restriction of the one-way rotating device 116 and rotates.

[0041] When plastic debris adheres to the cutting blade 105, the cutting blade 105 moves upward and drives the rotating roller 107 to rotate through the contact on the surface. When the next section of the plastic bag material strip is hot-cut, the cutting blade 105 moves downward. At this time, the rotating roller 107 is restricted by the one-way rotating device 116 and does not rotate. At this time, the cutting blade 105 is in friction contact with the grinding block 108 on the rotating roller 107, and the grinding block 108 scrapes off the adhesion on the cutting blade 105. When the cutting blade 105 moves upward, the rotating roller 107 loses the restriction of the one-way rotating device 116. The roller 107 is controlled to rotate, and the adhered matter is solidified by cooling and then rolls into the storage tank 109. When the rotating roller 107 rotates more times, the storage tank 109 carrying the solid matter will rotate into the range of the arc plate 115, and the extrusion block 113 will be squeezed by the inclined surface of the arc plate 115, and the push plate 111 will be pushed out of the storage tank 109 through the connecting rod 112. At this time, the solidified matter in the storage tank 109 will be pushed out together and then fall on the receiving rack 129. The receiving rack 129 continuously collects the fallen solidified matter for easy collection and cleaning during cleaning;

[0042] When the cutting blade 105 moves downward, the rotating roller 107 drives the first guide column 120 to move to both sides, so that the distance between the fixed plate 122 and the support seat 121 becomes smaller, and the spring between them is compressed. At the same time, the rotating roller 107 is locked by the one-way rotating devices 116 at both ends, and the rotating core 117 inside the one-way rotating device 116 is supported by the one-way rotating block 131 through the bevel teeth on the surface, so that the rotating core 117 is fixed, and the rotating roller 107 does not rotate. The grinding block 108 on the surface of the rotating roller 107 scrapes the cutting blade 105;

[0043] When the cutting blade 105 moves upward, the rotating core 117 reverses and loses the restriction of the one-way rotating block 131, so that the one-way rotating device 116 is unlocked, driving the rotating roller 107 to rotate.

[0044] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An automatic slitting device for producing degradable shopping bags, comprising a top plate (101) and a telescopic device (102) fixedly connected to the top plate (101), the output end of the telescopic device (102) being fixedly connected to a support plate (103), the bottom of the support plate (103) being fixedly connected to a heating module (104), the bottom of the heating module (104) being fixedly connected to a cutting blade (105), characterized in that: A moving frame (106) and a rotating roller (107) are symmetrically arranged at the bottom of the cutting blade (105); The outer wall of the rotating roller (107) is provided with grinding blocks (108) in a circular array, and a material storage groove (109) is provided between two adjacent grinding blocks (108). The interior of the rotating roller (107) is provided with an annular cavity (110), and a push plate (111) is slidably connected in the material storage groove (109). One end of the push plate (111) is fixedly connected to a connecting rod (112) extending into the annular cavity (110), and one end of the connecting rod (112) located in the annular cavity (110) is fixedly connected to an extrusion block (113), and the outer wall of the connecting rod (112) is sleeved with a spring located in the annular cavity (110). A rotating rod (114) is provided, and an arc plate (115) for pressing the extrusion block (113) is fixedly connected to the rotating rod (114), and the arc plate (115) is arranged to be inclined toward the moving frame (106) on the same side. Two ends of the rotating rod (114) are connected with a one-way rotating device (116), and the one-way rotating device (116) includes a rotating core (117) and a rotating shell (118). The rotating rod (114) is fixedly connected to the rotating core (117), and two ends of the rotating roller (107) are fixedly connected to the rotating shell (118). A rebound device (119) is connected between the rotating rod (114) and the moving frame (106).

2. The automatic cutting device for producing degradable shopping bags according to claim 1, characterized in that: The rebound device (119) comprises a first guide column (120) and a support seat (121); the first guide column (120) is slidably connected to the inner wall of the support seat (121); a fixing plate (122) is fixedly connected to the outer wall of the first guide column (120); a spring sleeved on the first guide column (120) is connected between the fixing plate (122) and the support seat (121); one end of the first guide column (120) away from the rotating rod (114) is fixedly connected to a limiting plate (123); and the support seat (121) is fixedly connected to both ends of the movable frame (106).

3. The automatic cutting device for producing degradable shopping bags according to claim 1, characterized in that: A synchronous bracket (124) is fixedly connected between the symmetrical moving frames (106), and a second guide column (125) penetrating the support plate (103) is fixedly connected to the top of the moving frame (106), and a spring located between the moving frame (106) and the support plate (103) is sleeved on the outer wall of the second guide column (125).

4. The automatic cutting device for producing degradable shopping bags according to claim 1, characterized in that: The four corners of the bottom of the top plate (101) are fixedly connected to third guide columns (126), and the support plate (103) and the movable frame (106) are slidably connected on the outer wall of the guide column.

5. The automatic cutting device for producing degradable shopping bags according to claim 4, characterized in that: The bottom end of the third guide column (126) is fixedly connected to a bottom plate (127), and a cutting blade holder (128) cooperating with the cutting blade (105) is fixedly connected to the bottom plate (127).

6. The automatic cutting device for producing degradable shopping bags according to claim 1, characterized in that: A material receiving frame (129) extending to the bottom of the rotating roller (107) is fixedly connected to a side opposite to the symmetrical moving frame (106); the bottom of the material receiving frame (129) is inclined toward the moving frame (106); and an anti-skid pad is fixedly connected to the bottom of the moving frame (106).

7. The automatic cutting device for producing degradable shopping bags according to claim 1, characterized in that: The one-way rotating device (116) further comprises an arc-shaped piece (130) and a one-way rotating block (131) located between the rotating core (117) and the rotating shell (118); the rotating core (117) is provided with bevel teeth; one end of the one-way rotating block (131) is rotatably connected to the rotating shell (118); the other end of the one-way rotating block (131) is in contact with the bevel teeth; and the arc-shaped piece (130) is in contact with the one-way rotating block (131).

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