A device for preventing deformation of prefabricated salt packaging bags

Abstract

This utility model provides an anti-deformation device for prefabricated salt packaging bags, relating to the field of prefabricated packaging bag processing technology. It includes: a fixed base; four support columns fixedly connected in a rectangular array to the top surface of the fixed base; a fixed top plate fixedly connected to the top surface of the four support columns; a lifting slide plate slidably connected to the outside of the four support columns; a hot-pressing plate provided on the bottom surface of the lifting slide plate; and an electric push rod bolted to the center of the top surface of the fixed top plate. During the rolling of the exhaust pressure roller along the prefabricated salt packaging bag, it drives the control cam to rotate, and subsequently, through a series of transmissions, the impact block intermittently impacts the mounting frame, causing the exhaust pressure roller to vibrate. This solves the problem that the film material of the prefabricated salt packaging bag accumulates internal stress due to stretching and temperature changes, and this stress is released as the temperature rises during the hot-pressing process, causing the bag to shrink and warp along the stress direction.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated packaging bag processing technology, and in particular to a device for preventing deformation of prefabricated salt packaging bags. Background Technology

[0002] In the production process of prefabricated salt packaging bags, in order to achieve the integration of multiple functional films, hot pressing is usually used to laminate multiple films with different functions. During the hot pressing process, in order to remove the residual air before hot pressing, a prefabricated salt packaging bag anti-deformation device is usually used to vent the prefabricated salt packaging bag and prevent the prefabricated salt packaging bag from bulging and deforming. The existing prefabricated salt packaging bag anti-deformation device usually consists of a fixed base, an electric push rod, a placement base, a hot pressing plate, a connecting swing rod, and a pressure roller.

[0003] For example, utility model application CN202322509204.5 discloses a device for preparing easy-tear, deformation-resistant packaging bags. Specifically, it includes a base, a placement platform on top of the base, a top plate above the placement platform via guide columns, a lifting plate pushed by a hydraulic cylinder at the bottom of the top plate, a heat-pressing plate installed at the bottom of the lifting plate, a shaft at the center of the front end of the lifting plate, and movably mounted inclined rods on both sides of the bottom of the shaft. A strip is fixed to the bottom of the inclined rod, and a pressure roller is rotatably connected to the bottom of the strip. A tensioning mechanism is provided between the inclined rods. This device for preparing easy-tear, deformation-resistant packaging bags can pre-expel the gas remaining inside the bag by squeezing, improving the effect of heat-pressing the packaging bag and thus ensuring the quality of the finished packaging bag.

[0004] However, regarding the current traditional anti-deformation devices for prefabricated salt packaging bags, during the pre-processing of lamination, printing, and other steps, the film material of the prefabricated salt packaging bags will accumulate internal stress due to stretching and temperature changes. This stress will be released as the temperature rises during the hot pressing process, causing the bag to shrink and warp along the stress direction, affecting the forming quality of the prefabricated salt packaging bags and making them inconvenient to use. Utility Model Content

[0005] In view of this, the present invention provides a device for preventing deformation of prefabricated salt packaging bags, which has an impact block that can release the internal stress of the prefabricated salt packaging bag film and allow small air masses to be discharged smoothly. When the exhaust pressure roller rolls along the prefabricated salt packaging bag, it drives the control cam to rotate. As the control cam rotates, it causes the impact block to intermittently impact the mounting frame through a series of transmissions, causing the exhaust pressure roller to vibrate.

[0006] This utility model provides a device for preventing deformation of prefabricated salt packaging bags, specifically including: a fixed base; four support columns are fixedly connected to the top surface of the fixed base in a rectangular array; a fixed top plate is fixedly connected to the top surface of the four support columns; a lifting slide plate is slidably connected to the outside of the four support columns; a hot pressure plate is provided on the bottom surface of the lifting slide plate; an electric push rod is bolted to the center of the top surface of the fixed top plate; the end of the output shaft of the electric push rod is fixedly connected to the top surface of the lifting slide plate; a placement plate is fixedly connected to the center of the top surface of the fixed base; a fixed column is fixedly connected to the center of the rear part of the lifting slide plate; two control rods are symmetrically rotatably connected to the outside of the fixed column; a mounting bracket is fixedly connected to the bottom surface of each of the two control rods; an exhaust pressure roller is rotatably connected inside each of the two mounting brackets; the two exhaust pressure rollers are aligned with the position of the placement plate.

[0007] Optionally, the rear ends of both control links are hinged to a connecting rocker arm; the end of the right connecting rocker arm is hinged to the end of the left connecting rocker arm; and a limit spring is fixedly connected between the two connecting rocker arms.

[0008] Optionally, two locking blocks are symmetrically slidably connected inside the fixed column; a connecting spring is fixedly connected to the inner side of each of the two locking blocks; the ends of the two connecting springs are fixedly connected inside the fixed column; a locking ring is inserted into the outside of the fixed column; two locking slots are symmetrically opened inside the locking ring; the two locking blocks are respectively inserted into the two locking slots; a control pressure plate is slidably connected inside each of the two locking slots; the two control pressure plates are respectively aligned with the positions of the two locking blocks; an auxiliary slide rod is fixedly connected to the outside of each of the two control pressure plates; the two auxiliary slide rods are slidably connected inside the locking ring; a fixing spring is fixedly connected to the outside of each of the two auxiliary slide rods; the ends of the two fixing springs are fixedly connected to the outside of the locking ring.

[0009] Optionally, a control cam is coaxially fixedly connected to the front of each of the two exhaust rollers; a protective shell is fixedly connected to the front of each of the two mounting brackets; the two control cams are respectively disposed in the two protective shells; a set of reciprocating slide plates is symmetrically slidably connected to the front of each of the two mounting brackets; a set of auxiliary springs is fixedly connected to the outside of each of the two sets of reciprocating slide plates; the ends of the two sets of auxiliary springs are respectively fixedly connected to the two mounting brackets.

[0010] Optionally, a set of reciprocating slides is fixedly connected to the outside of each of the two sets of reciprocating slides; a set of guide slides is symmetrically fixedly connected to the outside of each of the two mounting brackets; the two sets of reciprocating slides are slidably connected to the outside of the two sets of guide slides; a set of return springs is fixedly connected to the outside of each of the two sets of guide slides; the ends of the two sets of return springs are fixedly connected to the outside of the two sets of reciprocating slides.

[0011] Optionally, multiple sets of impact blocks are fixedly connected to the inner side of both sets of reciprocating carriages; the multiple sets of impact blocks are respectively aligned with the positions of the two mounting brackets.

[0012] Beneficial effects In the process of hot-pressing pre-made salt packaging bags, the movement of the hot-pressing plate drives the control linkage downwards via the lifting slide, causing the exhaust pressure roller to roll along the pre-made salt packaging bag. This exhausts air from inside the bag, preventing bulging and deformation during hot pressing, ensuring a tight film adhesion, and guaranteeing uniform pressure during hot pressing. Simultaneously, the rolling of the exhaust pressure roller drives the control cam to rotate, which in turn causes the impact block to intermittently strike the mounting frame via a series of transmissions. This vibration loosens the tension between film molecules, releasing some internal stress in advance and preventing warping and wrinkling caused by localized stress concentration. This effectively improves the practicality of the anti-deformation device for pre-made salt packaging bags and makes it more convenient to use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the isometric structure of this utility model.

[0015] Figure 2 This is an isometric structural schematic diagram of the present invention viewed from below.

[0016] Figure 3 This is an isometric structural diagram of the lifting slide plate of this utility model.

[0017] Figure 4 This is a utility model Figure 3 A magnified structural diagram at point A.

[0018] Figure 5 This is a utility model Figure 3 A magnified structural diagram at point B.

[0019] Figure 6 This is a cross-sectional structural diagram of the fixing column of this utility model.

[0020] Figure 7 This is an isometric structural diagram of the mounting bracket of this utility model.

[0021] Figure 8 This is a utility model Figure 7 A magnified structural diagram at point C.

[0022] Figure 9 This is an isometric structural diagram of the exhaust pressure roller of this utility model.

[0023] List of reference numerals 1. Fixed base; 101. Support column; 102. Fixed top plate; 103. Electric push rod; 104. Lifting slide plate; 105. Hot press plate; 106. Fixed column; 107. Control linkage; 108. Locking ring; 109. Locking block; 110. Connecting spring; 111. Auxiliary slide rod; 112. Control pressure plate; 113. Fixed spring; 114. Mounting bracket; 115. Exhaust pressure roller; 116. Control cam; 117. Protective shell; 118. Reciprocating slide; 119. Reciprocating slide plate; 120. Auxiliary spring; 121. Guide slide column; 122. Return spring; 123. Impact block; 124. Locking slot; 125. Placement plate; 126. Limiting spring; 127. Connecting swing rod. Detailed Implementation

[0024] To make the objectives, solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0025] Example 1: This utility model proposes a device to prevent deformation of prefabricated bags for salt packaging. Please refer to the following: Figures 1 to 9 Includes: a fixed base 1; The top surface of the fixed base 1 is fixedly connected to four support columns 101 in a rectangular array; the top surface of the four support columns 101 is fixedly connected to a fixed top plate 102; the four support columns 101 are slidably connected to a lifting slide plate 104; a hot press plate 105 is provided on the bottom surface of the lifting slide plate 104; an electric push rod 103 is bolted to the center of the top surface of the fixed top plate 102; the end of the output shaft of the electric push rod 103 is fixedly connected to the top surface of the lifting slide plate 104; a placement plate 125 is fixedly connected to the center of the top surface of the fixed base 1; a fixed column 106 is fixedly connected to the center of the rear part of the lifting slide plate 104; two control rods 107 are symmetrically rotatably connected to the outside of the fixed column 106; a mounting bracket 114 is fixedly connected to the bottom surface of each of the two control rods 107; an exhaust pressure roller 115 is rotatably connected inside each of the two mounting brackets 114; the two exhaust pressure rollers 115 are aligned with the position of the placement plate 125.

[0026] The rear ends of the two control links 107 are hinged to a connecting rocker arm 127; the end of the right connecting rocker arm 127 is hinged to the end of the left connecting rocker arm 127; a limit spring 126 is fixedly connected between the two connecting rocker arms 127.

[0027] Two locking blocks 109 are symmetrically slidably connected inside the fixed post 106; a connecting spring 110 is fixedly connected to the inner side of each of the two locking blocks 109; the ends of the two connecting springs 110 are fixedly connected inside the fixed post 106; a locking ring 108 is inserted into the outside of the fixed post 106; two locking slots 124 are symmetrically opened inside the locking ring 108; the two locking blocks 109 are respectively inserted into the two locking slots 124; a control pressure plate 112 is slidably connected inside each of the two locking slots 124; the positions of the two control pressure plates 112 are aligned with the positions of the two locking blocks 109; an auxiliary slide rod 111 is fixedly connected to the outside of each of the two control pressure plates 112; the two auxiliary slide rods 111 are slidably connected inside the locking ring 108; a fixing spring 113 is fixedly connected to the outside of each of the two auxiliary slide rods 111; the ends of the two fixing springs 113 are fixedly connected to the outside of the locking ring 108.

[0028] A control cam 116 is coaxially fixedly connected to the front of each of the two exhaust rollers 115; a protective shell 117 is fixedly connected to the front of each of the two mounting brackets 114; the two control cams 116 are respectively located inside the two protective shells 117; a set of reciprocating slide plates 119 are symmetrically slidably connected to the front of each of the two mounting brackets 114; an auxiliary spring 120 is fixedly connected to the outside of each of the two sets of reciprocating slide plates 119; the ends of the two sets of auxiliary springs 120 are respectively fixedly connected inside the two mounting brackets 114.

[0029] Each of the two sets of reciprocating slide plates 119 is fixedly connected to a set of reciprocating slide brackets 118; each of the two mounting brackets 114 is symmetrically fixedly connected to a set of guide slide columns 121; the two sets of reciprocating slide brackets 118 are slidably connected to the outside of the two sets of guide slide columns 121; each of the two sets of guide slide columns 121 is fixedly connected to a set of return springs 122; the ends of the two sets of return springs 122 are fixedly connected to the outside of the two sets of reciprocating slide brackets 118.

[0030] The specific usage and function of this embodiment are as follows: When hot-pressing the pre-made salt packaging bags, the film material of the pre-made salt packaging bags is placed on the placement plate 125. Then, the electric push rod 103 is activated to drive the lifting slide plate 104 to move. As the lifting slide plate 104 moves, it will drive the hot pressing plate 105 to move downward to hot-press the pre-made salt packaging bags. As the lifting slide plate 104 moves, it will cause the exhaust pressure roller 115 to roll along the pre-made salt packaging bags, expelling the air between the film materials of the pre-made salt packaging bags. During the rolling of the exhaust pressure roller 115, the control link 107 swings via the mounting bracket 114. This swinging of the control link 107 causes the connecting swing rod 127 to swing and stretch the limit spring 126. The elastic potential energy of the limit spring 126 facilitates the reset of the mounting bracket 114. The roller face of the exhaust pressure roller 115 is covered with an elastic material. By pressing the auxiliary slide rod 111, the auxiliary slide rod 111 slides within the locking ring 108 and compresses the fixing spring 113. As the auxiliary slide rod 115 rolls, the control link 107 swings via the mounting bracket 114. The sliding of the sliding rod 111 will cause the control plate 112 to slide within the locking slot 124. As the control plate 112 slides, it will press the locking block 109, causing the locking block 109 to slide within the fixed post 106 and press the connecting spring 110, thus disengaging the locking block 109 from the locking slot 124. Only then can the worker remove the locking ring 108. After removing the locking ring 108, the worker can remove the control linkage 107. The exhaust pressure roller 115 moves along the pre-made salt packaging bag. When the membrane material rolls, it drives the control cam 116 to rotate. As the control cam 116 rotates, it intermittently squeezes the reciprocating slide plate 119, causing the reciprocating slide plate 119 to slide back and forth under the elastic potential energy of the auxiliary spring 120 and the intermittent squeezing action of the control cam 116. During the reciprocating sliding of the reciprocating slide plate 119, it drives the reciprocating slide 118 to slide along the guide slide post 121 and squeeze the reset spring 122, causing the reciprocating slide 118 to move back and forth with the reciprocating sliding of the reciprocating slide plate 119.

[0031] Example 2: Based on Example 1, please refer to Figures 7 to 9 It includes: impact blocks 123, and multiple sets of impact blocks 123 are fixedly connected to the inner side of the two sets of reciprocating slides 118; the multiple sets of impact blocks 123 are respectively aligned with the positions of the two mounting brackets 114.

[0032] The specific usage and function of this embodiment: During the reciprocating movement of the reciprocating slide 118, the impact block 123 will intermittently impact the mounting frame 114, causing the exhaust pressure roller 115 to vibrate. The impact block 123 is made of nylon material.

[0033] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0034] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0035] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A device for preventing deformation of a preformed bag for packaging of table salt, comprising: A fixed base (1) is provided; four support columns (101) are fixedly connected to the top surface of the fixed base (1) in a rectangular array; a fixed top plate (102) is fixedly connected to the top surface of the four support columns (101); a lifting slide plate (104) is slidably connected to the outside of the four support columns (101); a hot press plate (105) is provided on the bottom surface of the lifting slide plate (104); characterized in that an electric push rod (103) is bolted to the center of the top surface of the fixed top plate (102); the end of the output shaft of the electric push rod (103) is fixedly connected to the lifting slide plate. The top surface of (104); a placement plate (125) is fixedly connected to the top surface of the fixed base (1); a fixed column (106) is fixedly connected to the rear of the lifting slide plate (104); two control rods (107) are symmetrically rotatably connected to the outside of the fixed column (106); a mounting bracket (114) is fixedly connected to the bottom surface of each of the two control rods (107); an exhaust pressure roller (115) is rotatably connected inside each of the two mounting brackets (114); the two exhaust pressure rollers (115) are aligned with the position of the placement plate (125).

2. The anti-deformation device for the pre-made bag of table salt packaging according to claim 1, characterized in that: The rear ends of the two control links (107) are hinged to a connecting rod (127); the end of the right connecting rod (127) is hinged to the end of the left connecting rod (127); a limit spring (126) is fixedly connected between the two connecting rods (127).

3. The anti-deformation device for the preform bag of table salt packaging according to claim 1, characterized in that: Two locking blocks (109) are symmetrically slidably connected inside the fixed post (106); a connecting spring (110) is fixedly connected to the inner side of each of the two locking blocks (109); the ends of the two connecting springs (110) are fixedly connected inside the fixed post (106); a locking ring (108) is inserted into the outside of the fixed post (106); two locking slots (124) are symmetrically opened inside the locking ring (108); the two locking blocks (109) are respectively inserted into the two locking slots (124); the two locking slots (124) A control pressure plate (112) is slidably connected inside each of the two control pressure plates (112); the positions of the two control pressure plates (112) are aligned with the positions of the two locking blocks (109); an auxiliary slide rod (111) is fixedly connected to the outside of each of the two control pressure plates (112); the two auxiliary slide rods (111) are slidably connected inside the locking ring (108); a fixing spring (113) is fixedly connected to the outside of each of the two auxiliary slide rods (111); the ends of the two fixing springs (113) are fixedly connected to the outside of the locking ring (108).

4. The anti-deformation device for the preform bag of table salt packaging according to claim 1, characterized in that: The front of each of the two exhaust rollers (115) is coaxially fixedly connected to a control cam (116); the front of each of the two mounting brackets (114) is fixedly connected to a protective shell (117); the two control cams (116) are respectively located inside the two protective shells (117); the front of each of the two mounting brackets (114) is symmetrically slidably connected to a set of reciprocating slide plates (119); the outside of each of the two sets of reciprocating slide plates (119) is fixedly connected to a set of auxiliary springs (120); the ends of the two sets of auxiliary springs (120) are respectively fixedly connected inside the two mounting brackets (114).

5. The anti-deformation device for the preform bag of table salt packaging according to claim 4, characterized in that: Both sets of reciprocating slides (119) are fixedly connected to a set of reciprocating slides (118); both sets of mounting brackets (114) are symmetrically fixedly connected to a set of guide slides (121); the two sets of reciprocating slides (118) are slidably connected to the outside of the two sets of guide slides (121); the two sets of guide slides (121) are fixedly connected to a set of return springs (122); the ends of the two sets of return springs (122) are fixedly connected to the outside of the two sets of reciprocating slides (118).

6. The anti-deformation device for the preform bag of table salt packaging according to claim 5, characterized in that: Multiple sets of impact blocks (123) are fixedly connected to the inner side of both sets of reciprocating slides (118); the multiple sets of impact blocks (123) are respectively aligned with the positions of the two mounting brackets (114).

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