A semi-automatic lid-opening vacuum packaging machine
By designing a semi-automatic opening and closing lid vacuum packaging machine, which uses elastic elements to drive the hot melt lid to open automatically, the problem of frequent opening and closing of lids affecting efficiency in existing technologies is solved, and automated operation and safety are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DELI GROUP CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-30
AI Technical Summary
Existing vacuum packaging machines require frequent opening and closing of the lid during operation, which affects work efficiency.
A semi-automatic opening and closing lid vacuum packaging machine was designed. The hot melt lid is automatically opened after vacuuming and heat sealing by an elastic element, reducing manual operation.
It improved work efficiency, prevented burns to hands from high-temperature heat-sealed parts, and simplified the operation process.
Smart Images
Figure CN224428002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of vacuum equipment, and more specifically to a semi-automatic open-and-close lid vacuum packaging machine. Background Technology
[0002] In the existing technology, when operating a vacuum packaging machine, it is usually necessary to open the outer cover of the vacuum packaging machine and then place the packaging bag opening on the vacuuming component to complete the vacuuming and heat sealing work. This operation method affects work efficiency because it requires frequent opening and closing of the cover. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a semi-automatic opening and closing lid vacuum packaging machine, which can automatically open the lid after vacuuming and heat sealing, reducing manual operation and improving work efficiency.
[0004] The technical solution of this utility model is to provide a semi-automatic opening and closing lid vacuum packaging machine, including a rotatably connected machine body and a hot-melt lid. An elastic element is provided between the hot-melt lid and the machine body. The hot-melt lid can rotate to close and compress the elastic element. The elastic element rebounds and drives the hot-melt lid to rotate and open. A buckle assembly is provided on the machine body. The buckle assembly includes a buckle and a buckle drive element. The buckle drive element can be pressed to drive the buckle forward or backward. A snap-fit part is provided on the hot-melt lid. When the hot-melt lid is closed, it can press the buckle drive element, driving the buckle forward to snap and lock with the snap-fit part. The elastic element can partially rebound after the hot-melt lid is closed, driving the hot-melt lid to disengage from the buckle drive element. When the hot-melt lid is attracted by the machine body, it can press the buckle drive element, driving the buckle backward to unlock with the snap-fit part.
[0005] Compared with existing technologies, the semi-automatic opening and closing lid vacuum packaging machine of this utility model has the following advantages: When vacuuming, the following steps can be followed: First, manually close the hot melt lid. At this time, the buckle moves forward and connects with the locking part and locks. After releasing, the hot melt lid is slightly raised, but the buckle is still locked with the locking part, so that the hot melt lid can remain in a closed state. Then, start the machine to vacuum and heat seal. Under the action of atmospheric pressure difference, the hot melt lid is attracted to the machine body, driving the buckle to move backward and unlock the locking part. At this time, the buckle and the locking part are unlocked. When the machine stops vacuuming after heat sealing, the atmospheric pressure difference acting on the hot melt lid disappears, the elastic element rebounds, and drives the hot melt lid to rotate and open automatically. There is no need to manually open the hot melt lid, which reduces manual operation, improves work efficiency, and also avoids burns to the hands from the high-temperature heat sealing parts.
[0006] Preferably, the latching drive component includes a push block, a fixed base, and a push block elastic element. The push block is slidably connected to the fixed base, and when the hot melt cover is closed, it can press the push block to slide downwards. The push block elastic element is disposed between the push block and the fixed base, and is compressed when the push block slides downwards, and pushes the push block upwards to disengage from the hot melt cover upon rebound. The machine body is provided with a latching slide rail, and the latch slides within the latching slide rail. The push block is slidably connected to the latch, and the downward or upward sliding of the push block can drive the latch to move forward or backward along the latching slide rail accordingly. A sliding locking structure is provided between the push block and the fixed base, which is used to lock or unlock the push block after the latch moves forward. With this structure, the latch is driven by the push block sliding on the fixed base, and the push block is locked or unlocked by the sliding locking structure after the latch moves forward, so that the latch can remain locked with the latching part, that is, the hot melt cover remains in a closed state, or the latch can be unlocked from the latching part, and the hot melt cover can be opened automatically. The structure is simple and easy to assemble.
[0007] Preferably, the buckle is provided with a connecting shaft, and the push block is provided with a buckle shaft groove that is slidably connected to the connecting shaft. The buckle shaft groove is obliquely arranged. When the push block slides downward, one side wall of the buckle shaft groove drives the connecting shaft to slide obliquely along the buckle shaft groove, causing the buckle to advance along the buckle track. When the push block slides upward, the other side wall of the buckle shaft groove drives the connecting shaft to slide obliquely along the buckle shaft groove, causing the buckle to retract along the buckle track. With this structure, the connecting shaft is slidably connected to the obliquely arranged buckle shaft groove, so that when the push block slides up and down, the connecting shaft can slide obliquely along the buckle shaft groove and slide back and forth along the buckle track, realizing the buckle being driven by the hot-melt cap pressing the push block.
[0008] Preferably, the buckle is provided with an obliquely oriented sliding groove, and the push block is provided with a connecting shaft that is slidably connected to the obliquely oriented sliding groove. When the push block slides downward, the connecting shaft slides obliquely along the obliquely oriented sliding groove, dragging the buckle forward along the buckle slide track; when the push block slides upward, the connecting shaft slides in the opposite direction along the obliquely oriented sliding groove, causing the buckle to retract along the buckle slide track. With this structure, the connecting shaft on the push block is slidably connected to the obliquely oriented sliding groove on the buckle, so that when the push block slides up and down, the connecting shaft can slide obliquely along the obliquely oriented sliding groove and slide back and forth along the buckle slide track, realizing the buckle being driven by the heat-fused cap pressing the push block.
[0009] Preferably, the sliding locking structure includes a guide rail and a sliding protrusion. One of the guide rail and the sliding protrusion is disposed on the push block, and the other is disposed on the fixed base. At least one of the guide rail and the sliding protrusion can slide left and right relative to the push block or the fixed base. The guide rail is provided with a protrusion groove, and the sliding protrusion is slidably connected in the protrusion groove. The protrusion groove is provided with a closed locking position and an open position. When the hot-melt cover switches from open to closed, the hot-melt cover and the elastic element of the push block can drive the push block to slide, so that the sliding protrusion slides along the protrusion groove until it enters the closed locking position, locking the push block. When the hot-melt cover switches from being sucked in to being open, the hot-melt cover and the elastic element of the push block can drive the push block to slide, so that the sliding protrusion slides along the protrusion groove until it enters the open position, unlocking the push block. With this structure, the sliding protrusion is driven to slide along the protrusion groove on the guide rail by the up and down sliding of the push block. A cover locking position is set to lock the push block, so that the buckle is locked with the locking part. An open cover position is set to unlock the push block, so that the buckle is unlocked with the locking part, and the hot melt cover can be opened automatically.
[0010] Preferably, the convex column slide groove includes a first slide groove, a second slide groove, a third slide groove, and a fourth slide groove connected end to end in an M shape. The lower ends of the second slide groove and the third slide groove are connected, and the connection part is provided with a closed locking position. The lower ends of the first slide groove and the fourth slide groove are connected, and the connection part is provided with an open position. When the sliding convex column is in the open position, the hot-melt cover can drive the push block to slide downward, causing the sliding convex column to slide upward along the first slide groove to the upper end of the second slide groove. Then, the push block elastic element can drive the push block to slide upward, causing the sliding convex column to slide downward along the second slide groove to the closed locking position, locking the push block. When the sliding convex column is in the closed locking position, the hot-melt cover can drive the push block to slide downward, causing the sliding convex column to slide upward along the third slide groove to the upper end of the fourth slide groove. Then, the push block elastic element can drive the push block to slide upward, causing the sliding convex column to slide downward along the fourth slide groove to the open position, unlocking the push block. With this structure, the convex post slide groove structure is simple, and the hot melt cover presses the push block to drive the sliding convex post to slide along the convex post slide groove on the guide rail, thereby locking or unlocking the push block.
[0011] Preferably, the guide rail is mounted on the push block and can slide left and right along the push block. A sliding groove and a sliding strip are provided between the guide rail and the push block for sliding engagement. The sliding protrusion is fixedly mounted on the fixed base. With this structure, the guide rail is located on the push block, and the sliding protrusion is located on the fixed base. When the sliding protrusion slides along the protrusion groove on the guide rail, the guide rail can slide left and right to adapt to the position of the sliding protrusion. Alternatively, the guide rail can be slidably mounted on the fixed base, and the sliding protrusion can be fixedly mounted on the push block.
[0012] Preferably, the guide rail is fixedly mounted on the push block, and the sliding protrusion is mounted on the fixed base and can slide left and right relative to the fixed base. The fixed base is provided with a sliding groove, and the sliding protrusion is limited within the sliding groove to slide left and right. With this structure, specifically, the guide rail is located on the push block, and the sliding protrusion is located on the fixed base. When the sliding protrusion slides along the protrusion groove on the guide rail, the sliding protrusion can adapt to the left and right sliding of the protrusion groove. Alternatively, the guide rail can be fixedly mounted on the fixed base, and the sliding protrusion can slide left and right on the push block.
[0013] Preferably, the hot-melt cover is provided with a locking hole. When the hot-melt cover is rotated and closed, the upper part of the push block and the latch both pass through the locking hole. The locking part is located on one side of the locking hole, and a pressing part is provided on the other side of the locking hole. A pressing plate is provided on the side of the push block. The pressing part is used to press the pressing plate when the hot-melt cover is rotated and closed, causing the push block to slide downward. With this structure, it is convenient to press down the push block while locking it with the latch when the hot-melt cover is rotated and closed.
[0014] Preferably, the machine body includes a housing with a push block slide rail. A fixed base is fixedly disposed below the push block slide rail. The upper part of the push block is disposed within the push block slide rail and can move up and down. A latching slide rail is disposed above the push block slide rail. The latch is disposed above the push block and is limited within the latching slide rail, allowing it to slide back and forth. A pressing plate sliding hole is disposed on the side of the push block slide rail, allowing the pressing plate to be limited within the pressing plate sliding hole and move up and down. This structure facilitates the installation of the latching slide rail and the limitation and guidance of the pressing plate's up and down movement within the pressing plate sliding hole, thus limiting and guiding the up and down movement of the push block.
[0015] Preferably, the side of the fixed base is provided with a limiting groove, and the side of the push block is provided with a guide protrusion. The guide protrusion is limited within the limiting groove and moves up and down. With this structure, the guide protrusion is limited within the limiting groove and moves up and down, which can limit the up and down sliding of the push block and guide the up and down sliding of the push block.
[0016] Preferably, an upper cover is provided above the heat-melting cap, and an operation panel is provided on the upper cover. The operation panel is used to control the start or stop of the semi-automatic opening and closing cap vacuum packaging machine. This structure facilitates the operation of the semi-automatic opening and closing cap vacuum packaging machine of this utility model. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the semi-automatic opening and closing lid vacuum packaging machine of this utility model.
[0018] Figure 2 This is a schematic diagram of the semi-automatic opening and closing lid vacuum packaging machine of this utility model in the open lid state.
[0019] Figure 3This is a schematic diagram of the internal structure of the hot melt cap of the semi-automatic opening and closing cap vacuum packaging machine of this utility model.
[0020] Figure 4 for Figure 3 Enlarged view of the locking structure in area A.
[0021] Figure 5 This is an exploded view of the buckle assembly in the semi-automatic opening and closing lid vacuum packaging machine of this utility model.
[0022] Figure 6 This is a cross-sectional view of the buckle section of the semi-automatic opening and closing lid vacuum packaging machine of this utility model when the lid is opened.
[0023] Figure 7 This is a schematic diagram of the buckle assembly of the semi-automatic opening and closing lid vacuum packaging machine of this utility model when the lid is opened.
[0024] Figure 8 This is a cross-sectional view of the buckle assembly of the semi-automatic opening and closing lid vacuum packaging machine of this utility model when the lid is opened.
[0025] Figure 9 This is a cross-sectional view of the buckle section of the semi-automatic opening and closing lid vacuum packaging machine of this utility model when the lid is closed.
[0026] Figure 10 This is a schematic diagram of the buckle assembly of the semi-automatic opening and closing lid vacuum packaging machine of this utility model when the lid is closed.
[0027] Figure 11 This is a cross-sectional view of the buckle assembly of the semi-automatic opening and closing lid vacuum packaging machine of this utility model when the lid is closed.
[0028] As shown in the figure: 1. Decorative panel, 2. Control panel, 3. Top cover, 4. Hot melt cover, 4-1. Locking hole, 4-2. Snap-fit part, 4-3. Pressing part, 5. Handle, 6. Machine body, 6-1. Machine housing, 6-2. Push block slide, 6-3. Snap-fit slide, 6-4. Pressing plate slide hole, 7. Base, 8. Buckle assembly, 9. Snap-fit, 9-1. Connecting shaft, 9-2. Snap-fit connector, 10. Push block, 1 0-1, Buckle shaft slide groove; 10-2, Guide rail limiting part; 10-3, Guide protrusion; 10-4, Pressing piece; 11, Guide rail; 11-1, First slide groove; 11-2, Second slide groove; 11-3, Third slide groove; 11-4, Fourth slide groove; 11-5, Opening position; 11-6, Closing locking position; 12, Fixing base; 12-1, Sliding protrusion; 12-2, Limiting slide groove; 13, Push block elastic element. Detailed Implementation
[0029] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.
[0030] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.
[0031] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list.
[0032] Example 1:
[0033] like Figure 1 and Figure 2 As shown, the semi-automatic opening and closing lid-type vacuum packaging machine of this utility model includes a machine body 6 and a heat-melting lid 4 rotatably connected. An upper cover 3 is provided above the heat-melting lid 4, and an operation panel 2 and a decorative panel 1 are provided on the upper cover 3. A handle 5 is provided on the side of the heat-melting lid 4. A base 7 is provided at the bottom of the machine body 6. The machine body 6 includes a housing 6-1. An elastic element (not shown) is provided between the heat-melting lid 4 and the housing 6-1. The heat-melting lid 4 can rotate to close and compress the elastic element, and the elastic element's rebound can drive the heat-melting lid 4 to rotate and open. A vacuuming device and an electrical system (not shown, but existing components can be used) are provided inside the housing 6-1. A heat-sealing device is provided below the heat-melting lid 4. Both the heat-sealing device and the vacuuming device are electrically connected to the electrical system. A control circuit board is provided below the operation panel 2, and the control circuit board is electrically connected to the electrical system, which can control the start or stop of the semi-automatic opening and closing lid-type vacuum packaging machine.
[0034] like Figure 2 and Figure 3 As shown, a buckle assembly 8 is provided on the housing 6-1. The buckle assembly 8 includes a latch 9 and a latch drive component. The latch drive component can drive the latch 9 to move forward or backward when pressed. Figure 5As shown, the latching drive includes a push block 10, a fixed base 12, and a push block elastic member. The push block 10 is slidably connected to the fixed base 12. The fixed base 12 has a limiting groove 12-2 on its side, and the push block 10 has a guide protrusion 10-3 on its side. The guide protrusion 10-3 is limited within the limiting groove 12-2 and moves up and down. The push block elastic member is located between the push block 10 and the fixed base 12 (not shown). The push block elastic member can be a spring, with its two ends abutting against the push block 10 and the fixed base 12, respectively. The latch 9 has a connecting shaft 9-1, and the upper part of the push block 10 has a latch shaft groove 10-1 that is slidably connected to the connecting shaft 9-1. The latch shaft groove 10-1 is obliquely arranged. A sliding locking structure is provided between the push block 10 and the fixed base 12. The sliding locking structure includes a guide rail 11 and a sliding protrusion 12-1. The push block 10 has a... A guide rail limiting part 10-2 is provided. The guide rail 11 is mounted on the push block 10 and is limited in the vertical direction within the guide rail limiting part 10-2. The guide rail limiting part 10-2 is provided with a transverse sliding groove. The guide rail 11 is provided with a sliding strip that slides in cooperation with the transverse sliding groove, so that the guide rail 11 can slide left and right relative to the push block 10. The guide rail 11 is provided with a protruding post sliding groove. The sliding protruding post 12-1 is fixedly mounted on the fixed base 12 and is slidably connected to... Within the aforementioned convex column sliding groove; the convex column sliding groove includes a first sliding groove 11-1, a second sliding groove 11-2, a third sliding groove 11-3, and a fourth sliding groove 11-4 connected end to end in an M shape. The lower ends of the second sliding groove 11-2 and the third sliding groove 11-3 are connected, and a cover locking position 11-6 is provided at the connection point. The lower ends of the first sliding groove 11-1 and the fourth sliding groove 11-4 are connected, and an open cover position 11-5 is provided at the connection point.
[0035] like Figure 6 and Figure 9 As shown, a push block slide 6-2 is provided on the housing 6-1, and a fixed base 12 is fixedly provided below the push block slide 6-2. The upper part of the push block 10 is provided in the push block slide 6-2 and can move up and down. A latch slide 6-3 is provided on the upper part of the push block slide 6-2. The latch 9 is slidably engaged in the latch slide 6-3 and is limited to slide back and forth in the latch slide 6-3.
[0036] like Figure 3 and Figure 4 As shown, the hot melt cover 4 is provided with a locking hole 4-1, a snap-fit part 4-2 is provided on one side of the locking hole 4-1, a pressing part 4-3 is provided on the other side of the locking hole 4-1, and a pressing piece 10-4 is provided on the side of the push block 10; a pressing piece sliding hole 6-4 is provided on the side of the push block slide 6-2, and the pressing piece 10-4 is limited to move up and down within the pressing piece sliding hole 6-4.
[0037] like Figures 6 to 8As shown, when the hot melt cover 4 is in the open state, the force of the push block elastic element causes the push block 10 to be in the high position, the sliding protrusion 12-1 to be in the low position of the open cover 11-5, the connecting shaft 9-1 to be in the low end of the buckle shaft slide groove 10-1, the buckle 9 to be in the buckle slide 6-3, and the buckle connector 9-2 at the front end of the buckle 9 to be retracted in the buckle slide 6-3.
[0038] When the hot melt cover 4 is pressed down, switching it from the open to the closed state, the upper part of the push block 10 and the buckle 9 both pass through the locking hole 4-1. The pressing part 4-3 presses on the pressing piece 10-4 and causes the push block 10 to slide downward. The side wall of the buckle shaft slide groove 10-1 drives the connecting shaft 9-1 to slide obliquely along the buckle shaft slide groove 10-1, causing the buckle 9 to slide forward out of the buckle slide 6-3 and buckle with the snap-fit part 4-2. The sliding protrusion 12-1 slides upward along the first slide groove 11-1 to the upper end of the second slide groove 11-2. The elastic element between the hot melt cover 4 and the housing 6-1 and the elastic element of the push block between the push block 10 and the fixed seat 12 are both compressed.
[0039] When the hot-melt cover 4 is released, the elastic element rebounds, driving the hot-melt cover 4 to rotate upwards, causing the pressing part 4-3 to disengage from the pressing piece 10-4; the elastic element of the push block rebounds, driving the push block 10 to slide upwards, and the sliding protrusion 12-1 slides downwards along the second sliding groove 11-2 to the cover locking position 11-6, locking the push block 10, that is, the connection between the buckle 9 and the locking part 4-2 is locked, and the hot-melt cover 4 is locked in the closed state, as shown. Figures 9 to 11 As shown in the image.
[0040] After the semi-automatic opening and closing lid vacuum packaging machine of this utility model starts vacuuming, the hot melt lid 4 is attracted to the machine body 6 under the action of atmospheric pressure difference. The pressing part 4-3 presses on the pressing plate 10-4 again and causes the push block 10 to slide downward. The sliding protrusion 12-1 slides upward along the third slide groove 11-3 to the upper end of the fourth slide groove 11-4, and the push block 10 is unlocked. After that, the elastic element of the push block rebounds and pushes the push block 10 to slide upward. The sliding protrusion 12-1 slides downward along the fourth slide groove 11-4 to the lid opening position 11-5. The other side of the groove wall of the buckle shaft slide groove 10-1 drives the connecting shaft 9-1 to slide obliquely along the buckle shaft slide groove 10-1, so that the buckle 9 retracts back into the buckle slide 6-3 and unlocks the buckling part 4-2.
[0041] When the semi-automatic opening and closing lid vacuum packaging machine of this utility model stops vacuuming, the atmospheric pressure difference acting on the hot melt lid 4 disappears, the elastic element rebounds, and drives the hot melt lid 4 to rotate and open automatically, eliminating the need to manually open the hot melt lid 4, reducing manual operation and improving work efficiency.
[0042] Example 2:
[0043] The difference between the semi-automatic opening and closing lid vacuum packaging machine of this embodiment and Embodiment 1 is that the buckle 9 is provided with an obliquely arranged sliding groove, and the push block 10 is provided with a connecting shaft that is slidably connected to the oblique sliding groove. When the push block 10 slides downward, the connecting shaft slides obliquely along the oblique sliding groove, dragging the buckle 9 forward along the buckle slide 6-3; when the push block 10 slides upward, the connecting shaft slides in the opposite direction along the oblique sliding groove, causing the buckle 9 to retract along the buckle slide 6-3.
[0044] Example 3:
[0045] Since only one of the guide rail 11 and the sliding protrusion 12-1 needs to be mounted on the push block 10 and the other on the fixed base 12, at least one of the guide rail 11 and the sliding protrusion 12-1 can slide left and right relative to the push block 10 or the fixed base 12. Therefore, the difference between the semi-automatic opening and closing lid vacuum packaging machine of this embodiment and Embodiment 1 is that the guide rail 11 is fixedly mounted on the push block 10, and the sliding protrusion 12-1 is mounted on the fixed base 12 and can slide left and right relative to the fixed base 12. The fixed base 12 is provided with a sliding groove, and the sliding protrusion 12-1 is limited to slide left and right within the sliding groove.
[0046] In other embodiments, the guide rail 11 can be slidably mounted on the fixed base 12, and the sliding protrusion 12-1 can be fixedly mounted on the push block 10; or the guide rail 11 can be fixedly mounted on the fixed base 12, and the sliding protrusion 12-1 can be slidably mounted on the push block 10.
[0047] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.
Claims
1. A semi-automatic lidding vacuum packaging machine comprising a machine body (6) and a hot-melt lid (4) connected rotatably, characterized in that, An elastic element is provided between the hot melt cover (4) and the machine body (6). The hot melt cover (4) can rotate to close and compress the elastic element. The elastic element rebounds and drives the hot melt cover (4) to rotate and open. A buckle assembly (8) is provided on the machine body (6). The buckle assembly (8) includes a buckle (9) and a buckle drive. The buckle drive can be pressed to drive the buckle (9) to move forward or backward. A snap-fit part (4-2) is provided on the hot melt cover (4). When the hot melt cover (4) is closed, it can press the buckle drive, drive the buckle (9) to move forward and snap-fit with the snap-fit part (4-2) and lock it. The elastic element can partially rebound after the hot melt cover (4) is closed, drive the hot melt cover (4) to disengage from the buckle drive. When the hot melt cover (4) is attracted by the machine body (6), it can press the buckle drive, drive the buckle (9) to move backward and unlock the snap-fit part (4-2).
2. The semi-automatic lidding vacuum packaging machine according to claim 1, characterized in that, The buckle drive component includes a push block (10), a fixed base (12), and a push block elastic element. The push block (10) is slidably connected to the fixed base (12). When the hot melt cover (4) is closed, it can press the push block (10) to slide downward. The push block elastic element is disposed between the push block (10) and the fixed base (12). It is compressed when the push block (10) slides downward and pushes the push block (10) to slide upward and disengage from the hot melt cover (4) when it rebounds. The machine body (6) is provided with a buckle slide (6-3). The buckle (9) is slidably engaged in the buckle slide (6-3). The push block (10) is slidably connected to the buckle (9). The push block (10) can drive the buckle (9) to move forward or backward along the buckle slide (6-3) accordingly when it slides downward or upward. A sliding locking structure is provided between the push block (10) and the fixed base (12). The sliding locking structure is used to lock or unlock the push block (10) after the buckle (9) moves forward.
3. The semi-automatic lidding vacuum packaging machine according to claim 2, characterized in that, The buckle (9) is provided with a connecting shaft (9-1), and the push block (10) is provided with a buckle shaft groove (10-1) that is slidably connected to the connecting shaft (9-1). The buckle shaft groove (10-1) is obliquely arranged. When the push block (10) slides downward, one side of the groove wall of the buckle shaft groove (10-1) drives the connecting shaft (9-1) to slide obliquely along the buckle shaft groove (10-1), so that the buckle (9) moves forward along the buckle slide (6-3). When the push block (10) slides upward, the other side of the groove wall of the buckle shaft groove (10-1) drives the connecting shaft (9-1) to slide obliquely along the buckle shaft groove (10-1), so that the buckle (9) moves backward along the buckle slide (6-3).
4. The semi-automatic lidding vacuum packaging machine according to claim 2, characterized in that, The buckle (9) is provided with an obliquely oriented sliding groove, and the push block (10) is provided with a connecting shaft that is slidably connected to the obliquely oriented sliding groove. When the push block (10) slides downward, the connecting shaft slides obliquely along the obliquely oriented sliding groove, dragging the buckle (9) forward along the buckle slide (6-3); when the push block (10) slides upward, the connecting shaft slides in the opposite direction along the obliquely oriented sliding groove, causing the buckle (9) to retract along the buckle slide (6-3).
5. The semi-automatic lidding vacuum packaging machine according to claim 3 or 4, characterized in that The sliding locking structure includes a guide rail (11) and a sliding protrusion (12-1). One of the guide rail (11) and the sliding protrusion (12-1) is mounted on the push block (10), and the other is mounted on the fixed base (12). At least one of the guide rail (11) and the sliding protrusion (12-1) can slide left and right relative to the push block (10) or the fixed base (12). The guide rail (11) is provided with a protrusion groove, and the sliding protrusion (12-1) is slidably connected in the protrusion groove. The protrusion groove is provided with a cover locking position (11-6) and an open position. When the hot-melt cover (4) is in position (11-5), it switches from open to closed. The hot-melt cover (4) and the push block elastic element can drive the push block (10) to slide, so that the sliding protrusion (12-1) slides along the protrusion groove until it enters the closed locking position (11-6), locking the push block (10). When the hot-melt cover (4) is switched from being sucked in to being open, the hot-melt cover (4) and the push block elastic element can drive the push block (10) to slide, so that the sliding protrusion (12-1) slides along the protrusion groove until it enters the open position (11-5), unlocking the push block (10).
6. The semi-automatic lidding vacuum packaging machine according to claim 5, characterized in that, The aforementioned convex column sliding groove includes a first sliding groove (11-1), a second sliding groove (11-2), a third sliding groove (11-3), and a fourth sliding groove (11-4) connected end-to-end in an M-shape. The lower end of the second sliding groove (11-2) is connected to the lower end of the third sliding groove (11-3), and the connection part is provided with a cover locking position (11-6). The lower end of the first sliding groove (11-1) is connected to the lower end of the fourth sliding groove (11-4), and the connection part is provided with a cover opening position (11-5). When the sliding convex column (12-1) is in the cover opening position (11-5), the hot melt cover (4) can drive the push block (10) to slide downward, so that the sliding convex column (12-1) can slide upward along the first sliding groove (11-1) to the second sliding groove (11-4). At the upper end of 1-2), the push block elastic element can drive the push block (10) to slide upward so that the sliding protrusion (12-1) can slide downward along the second slide groove (11-2) to the cover locking position (11-6) and lock the push block (10); when the sliding protrusion (12-1) is in the cover locking position (11-6), the hot melt cover (4) can drive the push block (10) to slide downward so that the sliding protrusion (12-1) can slide upward along the third slide groove (11-3) to the upper end of the fourth slide groove (11-4), and then the push block elastic element can drive the push block (10) to slide upward so that the sliding protrusion (12-1) can slide downward along the fourth slide groove (11-4) to the cover opening position (11-5) and unlock the push block (10).
7. The semi-automatic opening and closing lid vacuum packaging machine according to claim 5, characterized in that, The guide rail (11) is set on the push block (10) and can slide left and right along the push block (10). A sliding groove and a sliding strip are provided between the guide rail (11) and the push block (10) for sliding cooperation. The sliding protrusion (12-1) is fixedly set on the fixed seat (12).
8. The semi-automatic lidding vacuum packaging machine according to claim 5, characterized in that, The guide rail (11) is fixedly mounted on the push block (10), and the sliding protrusion (12-1) is mounted on the fixed seat (12) and can slide left and right relative to the fixed seat (12). The fixed seat (12) is provided with a sliding groove, and the sliding protrusion (12-1) is limited to slide left and right within the sliding groove.
9. The semi-automatic lidding vacuum packaging machine according to claim 2, characterized in that, The hot melt cover (4) is provided with a locking hole (4-1). When the hot melt cover (4) is rotated to close, the upper part of the push block (10) and the buckle (9) both pass through the locking hole (4-1). The snap-fit part (4-2) is located on one side of the locking hole (4-1). The other side of the locking hole (4-1) is provided with a pressing part (4-3). The side of the push block (10) is provided with a pressing piece (10-4). The pressing part (4-3) is used to press the pressing piece (10-4) when the hot melt cover (4) is rotated to close, so that the push block (10) slides downward.
10. The semi-automatic lidding vacuum packaging machine according to claim 9, characterized in that, The main body (6) of the machine includes a housing (6-1), a push block slide (6-2) is provided on the housing (6-1), a fixed seat (12) is fixedly provided below the push block slide (6-2), the upper part of the push block (10) is provided in the push block slide (6-2) and can move up and down, a snap-lock slide (6-3) is provided on the upper part of the push block slide (6-2), a snap (9) is provided on the upper part of the push block (10) and is limited to slide back and forth in the snap-lock slide (6-3), and a pressing plate slide hole (6-4) is provided on the side of the push block slide (6-2), and the pressing plate (10-4) is limited to move up and down in the pressing plate slide hole (6-4).
11. The semi-automatic lidding vacuum packaging machine according to claim 2, characterized in that, The side of the fixed seat (12) is provided with a limiting groove (12-2), and the side of the push block (10) is provided with a guide protrusion (10-3). The guide protrusion (10-3) is limited to move up and down within the limiting groove (12-2).
12. The semi-automatic lidding vacuum packaging machine of claim 1, wherein, A top cover (3) is provided above the hot melt cover (4), and an operation panel (2) is provided on the top cover (3). The operation panel (2) is used to control the start or stop of the semi-automatic opening and closing cover vacuum packaging machine.