Automatic folding machine for plastic bag production

Abstract

The utility model discloses an automatic folding machine for plastic bag production, which comprises a folding machine main body, a folding table is arranged at one end of the top of the folding machine main body, and two sides of the top end of the folding table are fixedly connected with mounting frames. According to the automatic folding machine for plastic bag production, by arranging a reset spring, an eccentric block, a reserved groove, a connecting shaft and a stepping motor, when the middle position of a plastic bag moves to the bottom end of a pressing plate, the stepping motor is started, the stepping motor drives the eccentric block to rotate through the connecting shaft, and the eccentric block rotates to extrude a connecting plate; a connecting plate can drive a pressing plate to descend through a limiting rod and a mounting plate, the pressing plate can fold a plastic bag conveniently, then a reset spring enables the connecting plate to rebound through elasticity of the reset spring, the limiting rod can drive the pressing plate to ascend, an eccentric block can rotate, the pressing plate can ascend and descend in a reciprocating mode, the structure is simple, and practicability is high. The problems that reciprocating motion of a pressing plate is inconvenient, and the structure is complex are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag folding, in particular to an automatic folding machine for plastic bag production. Background Art

[0002] Plastic bags are indispensable items in people's daily lives. Plastic bags are bags made of plastic as the main raw material. They can be used to hold other items and store other items. In the process of packaging plastic bags, it is necessary to use an automatic folding machine for plastic bag production to fold the plastic bags for bundling and packaging. When using the automatic folding machine for plastic bag production, it is found that it is inconvenient to make the pressing plate reciprocate and the structure is relatively complicated. Therefore, we proposed a new type of automatic folding machine for plastic bag production to improve the above-mentioned problems. Utility Model Content

[0003] The utility model aims to provide an automatic folding machine for producing plastic bags, so as to solve the problems in the above-mentioned background technology that it is inconvenient to make the pressing plate reciprocate and the structure is relatively complicated.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic folding machine for plastic bag production, comprising a folding machine body, a folding table is arranged at one end of the top of the folding machine body, mounting frames are fixedly connected to both sides of the top of the folding table, a support plate is welded to the rear end of the top of the mounting frame, a stepper motor is installed at the rear end of the support plate, a connecting shaft is fixedly connected to the output end of the stepper motor, an eccentric block is fixedly connected to the front end of the connecting shaft, a connecting plate is arranged at the top of the mounting frame, reset springs are fixedly connected to both sides between the connecting plate and the mounting frame, a limiting rod is arranged inside the reset spring, the bottom end of the limiting rod is fixedly connected to the mounting plate, and reserved grooves are provided at the four corners of the top end inside the mounting frame.

[0005] Preferably, a conveying assembly is provided inside the folding machine body, and a folding groove is provided at the front end of the folding table and the inside of the folding machine body.

[0006] Preferably, the limiting rod is fixedly connected to both sides between the mounting plate and the connecting plate, and the limiting rod slides inside the reserved groove.

[0007] Preferably, both sides of the mounting plate are fixedly connected with limit slide blocks, a rolling groove is provided inside the limit slide block, a ball bearing is provided inside the rolling groove, and both sides of the mounting frame are provided with limit slide grooves.

[0008] Preferably, the limiting sliding block is arranged inside the limiting sliding groove, and the limiting sliding block slides up and down inside the limiting sliding groove.

[0009] Preferably, a pressure plate is provided at the bottom end of the mounting plate, a mounting block is fixedly connected to the top end of the pressure plate, a mounting frame is fixedly connected to the bottom end of the mounting plate, mounting grooves are respectively provided inside the mounting frame and the mounting block, and fixing bolts are provided inside the mounting grooves.

[0010] Preferably, the mounting block is embedded in the mounting frame, and the mounting block and the mounting frame cooperate with each other.

[0011] Preferably, three groups of the mounting grooves are provided, and the mounting blocks are installed inside the mounting frame through fixing bolts and the mounting grooves.

[0012] Compared with the prior art, the utility model has the beneficial effects that: the automatic folding machine for plastic bag production not only facilitates the reciprocating motion of the pressing plate, facilitates the improvement of the lifting stability of the pressing plate, but also facilitates the replacement of the pressing plate;

[0013] (1) A reset spring, an eccentric block, a limit rod, a reserved groove, a connecting shaft and a stepper motor are provided. When the middle position of the plastic bag moves to the bottom end of the pressing plate, the stepper motor is started. The stepper motor drives the eccentric block to rotate through the connecting shaft. The rotation of the eccentric block can squeeze the connecting plate, so that the connecting plate can drive the pressing plate to descend through the limit rod and the mounting plate, making it convenient for the pressing plate to fold the plastic bag. Then, the reset spring can make the connecting plate rebound through its own elasticity, so that the limit rod can drive the pressing plate to rise, and the rotation of the eccentric block can make the pressing plate reciprocate and rise. The structure is simple;

[0014] (2) By providing the ball bearings, the rolling grooves, the limit sliders and the limit slide grooves, when the mounting plate is lifted or lowered, the limit sliders on both sides of the mounting plate will slide up and down inside the limit slide grooves, thereby improving the lifting and lowering stability of the mounting plate and the pressure plate, and preventing the pressure plate from being misaligned with the folding grooves and affecting the folding effect. The limit slider is provided with a rolling groove inside, and the ball bearings inside the rolling grooves can reduce the friction between the limit slider and the limit slide groove, thereby facilitating the limit slider to slide up and down inside the limit slide grooves;

[0015] (3) By providing the fixing bolts, the mounting groove, the mounting frame and the mounting block, the pressure plate will be worn out after long-term use. When the pressure plate needs to be disassembled and replaced, the fixing bolts are unscrewed from the inside of the mounting groove, so that the mounting block on the top of the pressure plate can be unfixed. After the mounting block is unfixed, the mounting block can be taken out of the inside of the mounting frame to disassemble the pressure plate. After the pressure plate is disassembled, it can be replaced to prevent the worn pressure plate from affecting the plastic bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0017] Figure 2It is a side-view enlarged structural schematic diagram of the mounting frame of the utility model;

[0018] Figure 3 It is a schematic diagram of an enlarged side cross-sectional structure of the installation frame of the utility model;

[0019] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged cross-section structure at point A in the middle.

[0020] In the figure: 1. folding machine body; 2. mounting frame; 3. pressure plate; 4. mounting plate; 5. reset spring; 6. connecting plate; 7. supporting plate; 8. eccentric block; 9. limit rod; 10. reserved groove; 11. folding table; 12. connecting shaft; 13. stepping motor; 14. fixing bolt; 15. mounting groove; 16. mounting frame; 17. ball bearing; 18. rolling groove; 19. limit slider; 20. limit slide groove; 21. mounting block. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1: Please refer to Figure 1-4 , an automatic folding machine for plastic bag production, including a folding machine body 1, a folding table 11 is arranged at one end of the top of the folding machine body 1, and a mounting frame 2 is fixedly connected to both sides of the top of the folding table 11, a support plate 7 is welded to the rear end of the top of the mounting frame 2, a stepper motor 13 is installed at the rear end of the support plate 7, a connecting shaft 12 is fixedly connected to the output end of the stepper motor 13, an eccentric block 8 is fixedly connected to the front end of the connecting shaft 12, a connecting plate 6 is arranged at the top of the mounting frame 2, and a reset spring 5 is fixedly connected to both sides between the connecting plate 6 and the mounting frame 2, a limiting rod 9 is arranged inside the reset spring 5, and the bottom end of the limiting rod 9 is fixedly connected to the mounting plate 4, and reserved grooves 10 are opened at the four corners of the top of the mounting frame 2;

[0023] A conveying assembly is provided inside the folding machine body 1, a folding slot is provided at the front end of the folding table 11 and the inside of the folding machine body 1, a limiting rod 9 is fixedly connected to both sides between the mounting plate 4 and the connecting plate 6, and the limiting rod 9 slides inside the reserved slot 10;

[0024] Specifically, Figure 1 and Figure 2As shown, when the middle position of the plastic bag moves to the bottom end of the pressing plate 3, the stepper motor 13 is started. The stepper motor 13 drives the eccentric block 8 to rotate through the connecting shaft 12. The rotation of the eccentric block 8 can squeeze the connecting plate 6, so that the connecting plate 6 can drive the pressing plate 3 to descend through the limiting rod 9 and the mounting plate 4, which makes it convenient for the pressing plate 3 to fold the plastic bag. Then the reset spring 5 will make the connecting plate 6 rebound through its own elasticity, so that the limiting rod 9 can drive the pressing plate 3 to rise, and the rotation of the eccentric block 8 can make the pressing plate 3 reciprocate and rise and fall. The structure is simple.

[0025] Embodiment 2: The two sides of the mounting plate 4 are fixedly connected with the limit slider 19, the inside of the limit slider 19 is provided with a rolling groove 18, the inside of the rolling groove 18 is provided with a ball 17, the two sides of the inside of the mounting frame 2 are provided with a limit slide groove 20, the limit slider 19 is arranged inside the limit slide groove 20, and the limit slider 19 slides up and down inside the limit slide groove 20;

[0026] Specifically, Figure 1 and Figure 4 As shown, when the mounting plate 4 is lifted or lowered, the limit sliders 19 on both sides of the mounting plate 4 will slide up and down inside the limit slide groove 20, thereby improving the stability of the lifting and lowering of the mounting plate 4 and the pressure plate 3, and preventing the pressure plate 3 from being misaligned with the folding groove and affecting the folding effect. A rolling groove 18 is opened inside the limit slider 19, and the ball 17 inside the rolling groove 18 can reduce the friction between the limit slider 19 and the limit slide groove 20, thereby facilitating the limit slider 19 to slide up and down inside the limit slide groove 20.

[0027] Embodiment 3: A pressing plate 3 is provided at the bottom end of the mounting plate 4, a mounting block 21 is fixedly connected to the top end of the pressing plate 3, a mounting frame 16 is fixedly connected to the bottom end of the mounting plate 4, mounting grooves 15 are respectively provided inside the mounting frame 16 and the mounting block 21, a fixing bolt 14 is provided inside the mounting groove 15, the mounting block 21 is embedded in the mounting frame 16, the mounting block 21 and the mounting frame 16 cooperate with each other, three groups of mounting grooves 15 are provided, and the mounting block 21 is installed inside the mounting frame 16 by the fixing bolts 14 and the mounting grooves 15.

[0028] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, the pressing plate 3 will be worn out after long-term use. When the pressing plate 3 needs to be disassembled and replaced, the fixing bolt 14 is unscrewed from the inside of the mounting groove 15, so that the mounting block 21 at the top of the pressing plate 3 can lose its fixation. After the mounting block 21 loses its fixation, the mounting block 21 can be taken out of the inside of the mounting frame 16 to disassemble the pressing plate 3. After the pressing plate 3 is disassembled, the pressing plate 3 can be replaced to prevent the worn pressing plate 3 from affecting the plastic bag.

[0029] Working principle: When the utility model is in use, the stepper motor 13 is started, and the stepper motor 13 drives the eccentric block 8 to rotate through the connecting shaft 12. The rotation of the eccentric block 8 can squeeze the connecting plate 6, so that the connecting plate 6 can drive the pressing plate 3 to descend through the limiting rod 9 and the mounting plate 4, so that the pressing plate 3 can fold the plastic bag conveniently, and then the reset spring 5 can make the connecting plate 6 rebound through its own elasticity. The eccentric block 8 and the reset spring 5 are arranged to make the pressing plate 3 reciprocate and rise and fall. When the mounting plate 4 is lifted and lowered, the limiting sliders 19 on both sides of the mounting plate 4 will slide up and down inside the limiting slide groove 20, so as to improve the lifting and lowering stability of the mounting plate 4 and the pressing plate 3, and prevent the pressing plate 3 from being misaligned with the folding groove to affect the folding effect. The ball 17 inside the rolling groove 18 can reduce the limiting slider 19 and the limiting slide groove 2 0, so that it is convenient for the limiting slider 19 to slide up and down inside the limiting slide groove 20. The pressing plate 3 will be worn after long-term use. When the pressing plate 3 needs to be disassembled and replaced, the fixing bolt 14 is screwed out from the inside of the mounting groove 15, so that the mounting block 21 at the top of the pressing plate 3 can lose its fixation. After the mounting block 21 loses its fixation, the mounting block 21 can be taken out of the inside of the mounting frame 16 to disassemble the pressing plate 3. After the pressing plate 3 is disassembled, the mounting block 21 is put back on the mounting frame 16. When placing the mounting block 21, align the mounting block 21 with the mounting groove 15 inside the mounting frame 16. After alignment, screw the fixing bolt 14 into the inside of the mounting groove 15 again to fix the new pressing plate 3. Replacing the pressing plate 3 can prevent the worn pressing plate 3 from affecting the plastic bag.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An automatic folding machine for producing plastic bags, comprising a folding machine body (1), characterized in that: A folding platform (11) is provided at one end of the top of the folding machine body (1), and a mounting frame (2) is fixedly connected to both sides of the top of the folding platform (11), and a support plate (7) is welded to the rear end of the top of the mounting frame (2), and a stepper motor (13) is installed at the rear end of the support plate (7), and the output end of the stepper motor (13) is fixedly connected to a connecting shaft (12), and the front end of the connecting shaft (12) is fixedly connected to an eccentric block (8), and a connecting plate (6) is provided at the top of the mounting frame (2), and a reset spring (5) is fixedly connected to both sides between the connecting plate (6) and the mounting frame (2), and a limit rod (9) is provided inside the reset spring (5), and the bottom end of the limit rod (9) is fixedly connected to the mounting plate (4), and reserved grooves (10) are provided at the four corners of the top of the mounting frame (2).

2. The automatic folding machine for plastic bag production according to claim 1, characterized in that: A conveying assembly is arranged inside the folding machine body (1), and a folding groove is arranged at the front end of the folding table (11) and the inside of the folding machine body (1).

3. The automatic folding machine for plastic bag production according to claim 1, characterized in that: The limiting rod (9) is fixedly connected to both sides between the mounting plate (4) and the connecting plate (6), and the limiting rod (9) slides inside the reserved groove (10).

4. The automatic folding machine for plastic bag production according to claim 1, characterized in that: The two sides of the mounting plate (4) are fixedly connected to a limit slide block (19), a rolling groove (18) is provided inside the limit slide block (19), a ball (17) is provided inside the rolling groove (18), and the two sides of the mounting frame (2) are provided with a limit slide groove (20).

5. The automatic folding machine for plastic bag production according to claim 4, characterized in that: The limiting sliding block (19) is arranged inside the limiting sliding groove (20), and the limiting sliding block (19) slides up and down inside the limiting sliding groove (20).

6. The automatic folding machine for plastic bag production according to claim 1, characterized in that: A pressing plate (3) is arranged at the bottom end of the mounting plate (4), a mounting block (21) is fixedly connected to the top end of the pressing plate (3), a mounting frame (16) is fixedly connected to the bottom end of the mounting plate (4), mounting grooves (15) are respectively provided inside the mounting frame (16) and the mounting block (21), and fixing bolts (14) are provided inside the mounting grooves (15).

7. The automatic folding machine for producing plastic bags according to claim 6, characterized in that: The mounting block (21) is embedded in the interior of the mounting frame (16), and the mounting block (21) and the mounting frame (16) cooperate with each other.

8. The automatic folding machine for producing plastic bags according to claim 6, characterized in that: The mounting grooves (15) are provided in three groups, and the mounting block (21) is mounted inside the mounting frame (16) via fixing bolts (14) and the mounting grooves (15).

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