Hot-sticking bottom sealing device for square bottom bag

Abstract

The utility model discloses a square bottom bag hot sticking bottom sealing device which comprises guide rails fixedly connected in a base, sliding grooves are formed in the guide rails, the number of the guide rails is four, and the inner sides of the four guide rails are further fixedly connected with supporting rings. When expansion heat sealing operation is carried out on the square bottom bag, the adjusting push rod installed in the guide rail can be started to push the moving seat to the outer side, and the moving seat drives the guide rod inserted into the moving seat to carry out automatic expansion opening operation on the square bottom bag. The heating cover fixedly connected to the bottom end face of the pressing and covering push rod is arranged, so that when the square bottom bag is heated, the heating cover with a groove formed in the bottom end covers the outer side of the square bottom bag connected to the outer side of the guide rod in a sleeving mode, and automatic heat sealing operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-melt bottom sealing of square bottom bags, in particular to a hot-melt bottom sealing device for square bottom bags. Background Art

[0002] Square bottom bag, polymer (or synthetic resin) is the main component of plastic. In order to improve the performance of plastic, various auxiliary materials must be added to the polymer to meet people's various requirements for plastics, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., to become a plastic with good performance. Square-bottom bags are typically made of synthetic resin and are named for their square bottom. When unfolded, they resemble a cardboard box, with varying lengths, widths, and heights, allowing them to be tailored to the size of the product being packaged. A patent for a woven bag bottom paper device, patent publication number CN206781120U, includes a frame with a conveyor surface for conveying the woven bag, a heater for heating the bottom paper, and pinch rollers for pressing the bottom paper against the woven bag. The pinch rollers include upper and lower pinch rollers, forming a gap between the upper and lower pinch rollers for allowing the bottom paper and woven bag to pass through. The gap is flush with the conveyor surface, and the lower pinch roller is connected to the frame. A photoelectric sensor is provided on the frame to detect when the woven bag enters and exits the gap, and a pinch driver is provided on the frame, connected to the upper pinch roller. This utility model is primarily used in a woven bag bottom paper device to achieve reliable bottom sealing. Furthermore, the utility model also provides a woven bag bottom paper cutting and slitting machine, including the aforementioned woven bag bottom paper device.

[0003] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: although they can be guided by the pressure wheel during use, due to the lack of an effective expansion structure, when the square bottom bag is in use, it needs to rely on manual sealing when sealing the bottom, which has limitations. Therefore, we proposed a square bottom bag hot-melt bottom sealing device to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a square bottom bag hot-melt bottom sealing device, which solves the problem that the existing square bottom bag needs to rely on manual bottom sealing due to the lack of an effective expansion structure.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a square bottom bag hot-melt bottom sealing device, including a guide rail fixedly connected to the base, characterized in that a slide groove is opened inside the guide rail, and the guide rail is provided at four locations, and the inner sides of the four guide rails are also fixedly connected to support rings, the support rings are annular structures, and an adjusting push rod is installed inside the slide groove opened in the guide rail, and a movable seat is installed on the output end of the adjusting push rod, the movable seat is a rectangular block structure, and two sliders are fixedly connected to the outer side of the movable seat in opposite directions.

[0006] Preferably, the movable seat is slidably connected to the guide rail via a slider fixedly connected to the outer surface of the movable seat, and a through hole is provided inside the movable seat.

[0007] Preferably, a guide rod is inserted into the through hole formed in the movable seat, and a spring plate with a circular cross section is fixedly connected to the bottom end surface of the guide rod.

[0008] Preferably, the four corners of the bottom end surface of the base are fixedly connected with supporting legs, the interior of the supporting legs is screwed with an adjusting rod with an external thread, and the bottom end of the adjusting rod is fixedly connected with a pad.

[0009] Preferably, a support frame is fixedly connected to the outer side of the base, and there are four support frames in total, wherein every two longitudinally adjacent support frames form a group.

[0010] Preferably, the two groups of support frames are fixedly connected to the left and right side surfaces of the base in opposite directions, and the bottom ends of the two groups of support frames are fixedly connected with pressing push rods.

[0011] Preferably, a heating cover with a rectangular cross-section is fixedly connected to the bottom end surface of the pressing push rod, an electric heating wire is laid inside the heating cover, and a controller is fixedly connected to the front end of the heating cover. Beneficial effects

[0012] The utility model provides a hot-melt bottom sealing device for square bottom bags. Compared with the existing technology, it has the following advantages:

[0013] The block bottom bag hot-melt bottom sealing device is provided with a movable seat fixedly connected to the outside of an adjusting push rod. When the block bottom bag is expanded and heat-sealed, the movable seat can be pushed outward by activating the adjusting push rod installed in the guide rail, and the movable seat drives the guide rod inserted inside the movable seat to automatically expand and open the block bottom bag.

[0014] The square bottom bag hot-melt bottom sealing device is provided with a heating cover fixedly connected to the bottom end surface of the pressing push rod, so that when the square bottom bag is heated, the heating cover with a groove at the bottom end can be used to cover the outside of the square bottom bag sleeved on the outside of the guide rod to achieve automatic heat sealing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the disassembled front and side structure of the bottom sealing device of the present invention;

[0016] Figure 2 This is a front structural diagram of the bottom sealing device of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the bottom sealing device of the utility model;

[0018] Figure 4 This is a schematic diagram of the combined structure of the support frame and the pressing push rod of the bottom sealing device of the present invention;

[0019] Figure 5 This is a left-side structural diagram of the bottom sealing device of the present invention;

[0020] Figure 6 This is a schematic diagram of the bottom sealing device of the utility model from an upward and side view.

[0021] In the figure: 1. Base; 101. Support leg; 102. Adjusting rod; 103. Pad; 2. Guide rail; 201. Support ring; 202. Adjusting push rod; 203. Moving seat; 204. Slider; 205. Guide rod; 206. Spring plate; 3. Support frame; 301. Pressing push rod; 302. Heating cover; 303. Controller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1-6 The utility model provides a technical solution: a square bottom bag hot-melt bottom sealing device, comprising a guide rail 2 fixedly connected to a base 1, a slide groove is provided inside the guide rail 2, and the guide rail 2 is provided with four positions, and a support ring 201 is fixedly connected to the inner side of the four guide rails 2, the support ring 201 is an annular structure, and an adjusting push rod 202 is installed inside the slide groove provided in the guide rail 2, a moving seat 203 is installed on the output end of the adjusting push rod 202, the moving seat 203 is a rectangular block structure, and two sliders 204 are fixedly connected to the outer side of the moving seat 203 in opposite directions;

[0024] By fixing two sliders 204 in opposite directions on the outer side of the movable base 203 , the movable base 203 can be guided by the sliders 204 when it moves.

[0025] See Figure 1 、 Figure 5 The movable seat 203 is slidably connected to the guide rail 2 through a slider 204 fixedly connected to the outer surface thereof, and a through hole is provided inside the movable seat 203;

[0026] By opening a through hole inside the movable seat 203 , the guide rod 205 can be quickly installed when it is in use.

[0027] See Figure 2 、 Figure 4 A guide rod 205 is inserted into the through hole opened in the movable seat 203, and a spring plate 206 with a circular cross section is fixedly connected to the bottom end surface of the guide rod 205;

[0028] The spring plate 206 is fixedly connected to the bottom end of the guide rod 205 so that it can provide a rebound force to the guide rod 205 when in use.

[0029] See Figure 1 、 Figure 2 , the two sets of support frames 3 are fixedly connected to the left and right side surfaces of the base 1 in opposite directions, and the bottom ends of the two sets of support frames 3 are fixedly connected with a pressing push rod 301;

[0030] The support frame 3 is fixedly connected to the outer side of the base 1 so that the base 1 can bear the pressing push rod 301 when in use.

[0031] See Figure 3 、 Figure 5 , the four corners of the bottom surface of the base 1 are fixedly connected with supporting legs 101, the interior of the supporting legs 101 is screwed with an adjusting rod 102 with an external thread, and the bottom end of the adjusting rod 102 is fixedly connected with a pad 103;

[0032] The support legs 101 are fixedly connected to the bottom end surface of the base 1 so that the base 1 can be provided with auxiliary support when in use.

[0033] See Figure 1 、 Figure 6 , the outer side of the base 1 is fixedly connected with a support frame 3, and there are four support frames 3, wherein every two longitudinally adjacent support frames 3 form a group;

[0034] The support frame 3 is fixedly connected to the outer side of the base 1 so that the outer side of the heating cover 302 can be protected from collision when in use.

[0035] See Figure 4 、 Figure 5A heating cover 302 with a rectangular cross section is fixedly connected to the bottom end surface of the pressing push rod 301, an electric heating wire is laid inside the heating cover 302, and a controller 303 is fixedly connected to the front end of the heating cover 302;

[0036] By fixing an electric heating wire on the inner side of the heating cover 302 , the heating cover 302 can be heated and quickly heat-sealed when in use.

[0037] During operation, during the production of the square bottom bag, the base 1 is placed on the ground using the pad 103 fixedly connected to the bottom end surface of the adjusting rod 102, and the screwing range of the adjusting rod 102 inside the supporting leg 101 is adjusted according to actual needs. After the adjustment is completed, the majority of the square bottom bag can be placed through the through hole provided in the support ring 201, and the opening of the square bottom bag can be sleeved to the outer position of the guide rod 205 inserted in the movable seat 203. Then, the square bottom bag that needs to be sealed is placed on the bottom square bottom bag that needs to be heat-sealed.

[0038] At this time, the heating cover 302 arranged on the bottom end surface of the pressing push rod 301 is pre-energized and heated. After reaching the predetermined temperature, the pressing push rod 301 installed on the bottom end surface of the support frame 3 is started to push the heating cover 302 downward to contact the square bottom bag sleeved on the outside of the guide rod 205 to realize automated heat sealing operation, thereby achieving a more practical purpose.

[0039] In summary, the device can adjust the expansion range of the guide rod 205 by providing an adjustment push rod 202 fixedly connected to the guide rail 2.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A hot-melt bottom sealing device for a square bottom bag, comprising a guide rail (2) fixedly connected to a base (1), characterized in that: The guide rail (2) is provided with a slide groove inside, and the guide rail (2) is provided with four grooves in total. The inner sides of the four guide rails (2) are fixedly connected with support rings (201). The support ring (201) is an annular structure. An adjusting push rod (202) is installed inside the slide groove provided in the guide rail (2). A moving seat (203) is installed on the output end of the adjusting push rod (202). The moving seat (203) is a rectangular block structure, and two sliders (204) are fixedly connected to the outer side of the moving seat (203) in opposite directions.

2. The hot-melt bottom sealing device for a square bottom bag according to claim 1, characterized in that: The movable seat (203) is slidably connected to the guide rail (2) via a slider (204) fixedly connected to the outer surface thereof, and a through hole is provided inside the movable seat (203).

3. The hot-melt bottom sealing device for a square bottom bag according to claim 2, characterized in that: A guide rod (205) is inserted into the through hole provided in the movable seat (203), and a spring plate (206) with a circular cross section is fixedly connected to the bottom end surface of the guide rod (205).

4. The hot-melt bottom sealing device for a square bottom bag according to claim 1, characterized in that: The four corners of the bottom end surface of the base (1) are fixedly connected to support legs (101), the interior of the support legs (101) is screwed with an adjustment rod (102) with an external thread, and the bottom end of the adjustment rod (102) is fixedly connected to a cushion block (103).

5. The hot-melt bottom sealing device for a square bottom bag according to claim 1, characterized in that: The outer side of the base (1) is fixedly connected to a support frame (3), and the support frames (3) are provided at four locations, wherein every two longitudinally adjacent support frames (3) form a group.

6. The hot-melt bottom sealing device for a square bottom bag according to claim 5, characterized in that: The two groups of support frames (3) are fixedly connected to the left and right side surfaces of the base (1) in opposite directions, and the bottom ends of the two groups of support frames (3) are fixedly connected to the pressing push rods (301).

7. The hot-melt bottom sealing device for a square bottom bag according to claim 6, characterized in that: A heating cover (302) with a rectangular cross section is fixedly connected to the bottom end surface of the pressing push rod (301), an electric heating wire is laid inside the heating cover (302), and a controller (303) is fixedly connected to the front end of the heating cover (302).

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