An automatic reciprocating follow-up bag stacking machine

Abstract

The present invention belongs to the field of packaging devices, and specifically relates to an automatic reciprocating follow-up stacking machine, including a frame, a Z-axis lifting mechanism, a clamping mechanism and a conveyor belt. The clamping mechanism includes a profile base, a telescopic cylinder and symmetrically arranged clamping components. The clamping components are spaced in two groups in front and behind the profile base and have clamping freedom. During operation, the product to be stacked is sent to the bottom of the clamping mechanism by the conveyor belt, and the clamping component is controlled by the telescopic cylinder to clamp the product, and then the Z-axis lifting mechanism pulls it up to complete the stacking. The frame is provided with an X-axis sliding seat and a Z-axis lifting mechanism, which can realize X-axis reciprocating and Z-axis up and down movement. By controlling the coordinated action of the conveyor belt and various mechanisms, and utilizing the product structure limit, the products can be stacked in an orderly manner, the stacked products can be neat and compact, the stacking quality and efficiency can be improved, and it is convenient to enter the subsequent film packaging link.

Description

Technical Field

[0001] The invention belongs to the field of packaging devices, and in particular relates to an automatic reciprocating follow-up packaging stacking machine. Background Art

[0002] When packaging some bottled products, the packaged single groups of products are usually stacked to form a stacked state with two groups of products. The two stacked groups of products are then film-wrapped again to form independent packages of two groups in one bag, which is convenient for measurement, transportation and subsequent sales.

[0003] At present, the stacking equipment adopts a single clamp design, that is, the clamp grabs the first group of products, and then the clamp carries the first group of products and lifts it in the vertical direction. When the second group of products is transported to the bottom of the first group of products along the conveyor belt, the clamp clamps the first group of products and moves it downward to place it on the second group of products. Since the clamp can only grab one group of products at a time, the stacking efficiency is low; and since the bottle body is elastic after being filled with liquid, the first group of products may bounce off due to misalignment when placed, resulting in misalignment of the stack formed by the two groups of products. Before the second film wrapping, a shaping process needs to be added to shape the stack, which requires additional shaping equipment investment, thereby increasing the packaging cost. Summary of the Invention

[0004] In order to solve the above problems in the prior art, the present invention provides an automatic reciprocating follow-up stacking machine, which improves the stacking efficiency, reduces the subsequent shaping steps, and saves packaging costs.

[0005] The specific technical solution adopted in the present invention is:

[0006] An automatic reciprocating follow-up stacking machine includes a frame and a Z-axis lifting mechanism arranged on the frame. The Z-axis lifting mechanism is connected to a clamping mechanism. A conveyor belt is arranged below the clamping mechanism. The products to be stacked are transported to the bottom of the clamping mechanism by means of the conveyor belt, and the products are stacked on the conveyor belt by means of the clamping mechanism. The clamping mechanism includes a profile base, a telescopic cylinder and clamping components symmetrically arranged on both sides of the profile base. The profile base is connected to the Z-axis lifting mechanism. Two groups of clamping components are arranged at intervals in the front and rear directions of the profile base. Each group of clamping components has clamping freedom by means of the telescopic cylinder.

[0007] The clamping assembly includes a pushing arm and a clamping arm. The cross-section of the pushing arm is an L-shaped structure. The horizontal end of the pushing arm is fixedly connected to the telescopic end of the telescopic cylinder. The vertical end of the pushing arm is arranged on the outside of the clamping arm. The clamping arm is suspended under the profile base with the help of a spring. The clamping arm has the clamping freedom to move closer to the center of the profile base with the help of the abutment and pressing of the pushing arm.

[0008] A pushing wedge with its tip facing upward is provided on the inner side of the vertical end of the pushing arm, and a clamping wedge with its tip facing downward is provided on the outer side of the clamping arm. The pushing wedge abuts against the clamping wedge to form a friction fit.

[0009] The vertical end of the push arm is provided with a limit groove in the vertical direction, and the outer side of the clamping arm is provided with a limit bolt. The limit bolt is inserted into the limit groove and has the freedom to slide along the length direction of the limit groove.

[0010] The frame is also provided with an X-axis sliding seat, and the X-axis sliding seat is slidably arranged on the X-axis slide rail. The frame is also provided with a transmission belt arranged along the X-axis slide rail. The X-axis sliding seat is fixedly connected to the transmission belt, and the transmission belt drives the X-axis sliding seat to move back and forth along the X-axis slide rail with the help of a driving motor. The Z-axis lifting mechanism includes a Z-axis slide rail arranged on the X-axis sliding seat and a Z-axis lifting slide rod slidingly matched with the Z-axis slide rail. The profile base is fixedly connected to the Z-axis lifting slide rod. The X-axis sliding seat is provided with a Z-axis gear driven by a motor, and the Z-axis lifting slide rod is provided with teeth meshing with the Z-axis gear. The Z-axis slide rod has the freedom to slide up and down along the Z-axis slide rail with the help of the rotation of the Z-axis gear.

[0011] The lower end of the clamping arm is configured as a flanged bending structure extending outward, and the clamping arms on both sides are formed into a trumpet-shaped structure.

[0012] The vertical end of the pushing arm is also provided with a reinforcing edge with an L-shaped cross-section, and the lower end of the clamping arm is provided with an upward-turned limiting fold. The reinforcing edge and the limiting fold have the freedom of movement to abut and limit as the spring of the clamping arm expands and contracts.

[0013] The profile base is also provided with a blocking rod, which hangs down and extends between the clamping arms on both sides of the profile base.

[0014] The beneficial effects of the present invention are:

[0015] The clamping mechanism consists of a profile base, a telescopic cylinder and symmetrically arranged clamping components. The clamping components are spaced in two groups in the front and rear directions of the profile base and have clamping freedom, which can achieve clamping and loosening of the product. In conjunction with the Z-axis lifting mechanism, the clamped product can be raised and squatted on top of the next group of products, thereby completing the stacking operation and realizing an automated stacking process.

[0016] The push arm and the clamping arm in the clamping assembly cooperate with each other, and the clamping arm is hoisted by a spring, so that the push arm can abut and press the clamping arm, allowing the clamping arm to have the clamping freedom to move closer to the center of the profile base, so as to facilitate the stable clamping of the product when it is located between the clamping arms, and ensure that the product will not fall off when displacement occurs during the stacking process.

[0017] The pushing wedge on the inner side of the vertical end of the pushing arm abuts against the clamping wedge on the outer side of the clamping arm to form a friction fit, and the angle reaches a self-locking angle. At the same time, combined with the anti-slip rubber pad on the inner side of the clamping arm, the reverse wedge limit structure can be used to prevent the product from sliding when the product has a downward trend, prevent the product from falling during the clamping process, and ensure the stability and safety of the stacking.

[0018] The limit groove at the vertical end of the push arm cooperates with the limit bolt on the outside of the clamping arm. When the spring expands and contracts due to the lowering of the clamping jaw assembly and the abutment against the conveyor belt, the movement of the clamping arm can be limited in the vertical direction to prevent the clamping arm from swinging with the conveyor belt, thereby ensuring the accuracy of clamping and preventing unstable product clamping or misalignment of stacked packages due to shaking of the clamping arm.

[0019] The flange-shaped bending structure extending outward from the lower end of the clamping arm forms a trumpet shape, which is convenient for being put on the product on the conveyor belt, making it easier for the product to enter the clamping space between the clamping arms, improving the convenience and efficiency of the clamping mechanism in grasping the product, and reducing the time for product positioning and grasping.

[0020] The reinforced edge at the vertical end of the pushing arm cooperates with the limiting folded edge at the lower end of the clamping arm, which can play a role of abutment and limitation when the clamping arm spring is extended and retracted; the blocking rod can intercept the product, so that the products in the product unit are arranged tightly, providing neat product arrangement for subsequent clamping and stacking, ensuring the neatness and tightness of the stacking.

[0021] The X-axis sliding seat and Z-axis lifting mechanism on the frame realize reciprocating movement in the X-axis direction and up and down sliding in the Z-axis direction through structures such as transmission belts, slide rails, and gears. Cooperating with the clamping mechanism, the clamping mechanism can accurately move to the product position for grabbing and move the product to the designated position for stacking. At the same time, it realizes follow-up during the stacking process to ensure the smoothness and accuracy of the stacking action.

[0022] By controlling the movement of the conveyor belt and combining the coordinated actions of the clamping mechanism, X-axis sliding seat and Z-axis lifting mechanism, orderly stacking of products can be achieved. The structural characteristics of the products themselves (such as the concave bottom of bottled liquids) are used for positioning. At the same time, the clamping wedge and the pushing wedge provide space during the second downward pressure, facilitating the simultaneous release of the claws, so that the stacked products can enter the subsequent links in a neat and tight state, improving the quality and efficiency of stacking and ensuring the appearance and stability of the stacked products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the left view direction of the clamping claw mechanism;

[0025] Figure 3 is a schematic diagram of the gripper mechanism;

[0026] Figure 4 It is a schematic diagram of the state when stacking packages;

[0027] In the accompanying drawings, 1. frame, 2. profile base, 3. telescopic cylinder, 4. pushing arm, 5. clamping arm, 6. spring, 7. pushing wedge, 8. clamping wedge, 9. limiting groove, 10. limiting bolt, 11. X-axis sliding seat, 12. X-axis slide rail, 13. Z-axis slide rail, 14. Z-axis lifting slide bar, 15. reinforcing edge, 16. limiting folding edge, 17. blocking rod. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0029] Specific implementation examples Figure 1 、 Figure 2 and Figure 3 As shown, the stacking machine of the present invention includes a frame 1 and a Z-axis lifting mechanism arranged on the frame 1, the Z-axis lifting mechanism is connected to a clamping mechanism, and a conveyor belt is arranged below the clamping mechanism. The products to be stacked are transported to the bottom of the clamping mechanism with the help of the conveyor belt, and the products are stacked on the conveyor belt with the help of the clamping mechanism. The clamping mechanism includes a profile base 2, a telescopic cylinder 3 and clamping components symmetrically arranged on both sides of the profile base 2, the telescopic cylinder 3 is a double-rod double-head telescopic cylinder, the profile base 2 is connected to the Z-axis lifting mechanism, and the clamping components are arranged in two groups at intervals in the front and rear directions of the profile base 2, and each group of clamping components has clamping freedom with the help of the telescopic cylinder 3.

[0030] The profile base 2 of the present invention is provided with a telescopic cylinder 3, and each set of clamping components includes two clamping components on the left and right. Figure 2 As shown, the telescopic cylinder 3 is arranged above the profile base 2. With the help of pushing or pulling the telescopic cylinder 3, the clamping components on both sides can loosen or clamp the products located below the profile base 2 and between the clamping components on both sides. When the clamping is completed, with the help of the traction of the Z-axis lifting mechanism, the clamping mechanism and the products clamped by the clamping mechanism are lifted, so that it is convenient to squat the group of products on top of the next group of products, thereby completing the stacking.

[0031] Further, such as Figure 2 and Figure 3 As shown, the clamping assembly includes a pushing arm 4 and a clamping arm 5. The cross-section of the pushing arm 4 is an L-shaped structure. The horizontal end of the pushing arm 4 is fixedly connected to the telescopic end of the telescopic cylinder 3. The vertical end of the pushing arm 4 is arranged on the outside of the clamping arm 5. The clamping arm 5 is hoisted under the profile base 2 with the help of a spring 6. The clamping arm 5 has the clamping freedom to move closer to the center of the profile base 2 with the help of the abutment and pressing of the pushing arm 4.

[0032] When the present invention is in use, the clamping assembly cover is buckled on the product with the help of the Z-axis lifting mechanism, so that the product is abutted by the clamping arms 5 on the left and right. With the help of the clamping and release of the push arms 4, the clamping arms 5 are clamped on the product, thereby clamping the product.

[0033] Furthermore, a pushing wedge 7 with its tip facing upward is provided on the inner side of the vertical end of the pushing arm 4, and a clamping wedge 8 with its tip facing downward is provided on the outer side of the clamping arm 5. The pushing wedge 7 abuts against the clamping wedge 8 and forms a friction fit.

[0034] Because the product has a certain degree of elasticity and is heavy, a non-slip rubber pad is installed on the inside of the clamping arm 5. At the same time, the clamping wedge 8 and the push wedge 7 are arranged in opposite directions. When the clamping arm 5 tends to slide downward when clamping the product, the push wedge 7 and the clamping wedge 8 form a reverse wedge-blocking structure, thereby preventing the product from sliding down. The angle between the clamping wedge 8 and the push wedge 7 reaches a self-locking angle, thus preventing the clamping wedge 8 and the push wedge 7 from further relative movement when the clamping arm 5 and the push arm 4 abut.

[0035] Further, such as Figure 3 As shown, the vertical end of the pushing arm 4 is provided with a limit groove 9 along the vertical direction, and the outer side of the clamping arm 5 is provided with a limit bolt 10. The limit bolt 10 is inserted into the limit groove 9 and has the freedom to slide along the length direction of the limit groove 9.

[0036] When the spring 6 connecting the clamping arm 5 abuts the conveyor belt due to the lowering of the clamping jaw assembly, the spring 6 expands and contracts. The limit groove 9 and the limit bolt 10 are provided to prevent the clamping arm 5 from swinging along with the conveyor belt. That is, the movement of the clamping arm 5 is limited to the vertical direction by the limit groove 9 provided in the vertical direction. At the same time, the limit bolt 10 is longer and greater than the range of motion of the push arm 4, avoiding interference and ensuring accurate clamping.

[0037] Furthermore, the lower ends of the clamping arms 5 are configured as outwardly extending flanged bends, and the clamping arms 5 on both sides are formed into a bell-shaped structure. The bell-shaped clamping arms 5 form a clamping structure that is easy to fit onto the product on the conveyor belt and facilitate the product to enter the clamping space between the clamping arms 5.

[0038] Furthermore, the vertical end of the pushing arm 4 is also provided with a reinforcing edge 15 with an L-shaped cross-section, and the lower end of the clamping arm 5 is provided with an upward-turned limiting fold 16. The reinforcing edge 15 and the limiting fold 16 have the freedom of movement to abut and limit as the spring 6 of the clamping arm 5 expands and contracts.

[0039] The profile base 2 is further provided with a blocking rod 17 , which hangs down and extends between the clamping arms 5 on both sides of the profile base 2 .

[0040] Furthermore, the frame 1 is also provided with an X-axis sliding seat 11, and the X-axis sliding seat 11 is slidably set on the X-axis slide rail 12. The frame 1 is also provided with a transmission belt set along the X-axis slide rail 12, and the X-axis sliding seat 11 is fixedly connected to the transmission belt. The transmission belt drives the X-axis sliding seat 11 to move back and forth along the X-axis slide rail 12 with the help of a driving motor. The Z-axis lifting mechanism includes a Z-axis slide rail 13 set on the X-axis sliding seat 11 and a Z-axis lifting slide bar 14 slidingly matched with the Z-axis slide rail 13. The profile base 2 is fixedly connected to the Z-axis lifting slide bar 14. The X-axis sliding seat 11 is provided with a Z-axis gear driven by a motor, and the Z-axis lifting slide bar 14 is provided with teeth meshing with the Z-axis gear. The Z-axis slide bar has the freedom to slide up and down along the Z-axis slide rail 13 with the help of the rotation of the Z-axis gear.

[0041] The control method of the present invention is that the conveyor belt below the clamping mechanism moves continuously and uniformly, and the upper conveyor belt moves intermittently and stops after conveying two groups of products each time, waiting for the clamping mechanism to move. Figure 1 As shown, with the help of the intermittent motion of the upper conveyor belt, two groups of products are arranged in a unit on the conveyor belt below the clamping mechanism, and are arranged in a straight line. The clamping mechanism lowers the clamping mechanism with the help of the Z-axis lifting slide 14. At this time, the blocking rod 17 is used to intercept the front of a product unit. The product at the front side of this product unit is stopped, and the rear side product is squeezed to the front side product along the conveyor belt, so that there is no gap between the two groups of products. At this time, the downward extending clamping arm 5 abuts against the belt surface of the conveyor belt ( Figure 1 The spring 6 is in a compressed state, thereby reducing the distance between the clamping arm 5 and the profile base 2. Then the telescopic cylinder 3 of the clamping mechanism corresponding to the rear product is contracted, so that the rear product is clamped first. Then the Z-axis lifting slide 14 moves up until the bottom surface of the rear product is higher than the bottom surface of the front product (at this time, the front product is still on the conveyor belt surface and slips and idling with the conveyor belt surface). Then the telescopic cylinder 3 corresponding to the front product is contracted to grab the front product, as shown in FIG. Figure 4 As shown, at this time, the bottom surface of the front product is slightly lower than the bottom surface of the rear product.

[0042] After that, the Z-axis lifting slide 14 is used to continue to lift it to a safe height, that is, a height that does not interfere with other products on the conveyor belt. Then, the X-axis sliding seat 11 carries the Z-axis lifting mechanism and the product to the incoming direction of the conveyor belt. After the next unit product enters the conveyor belt, the X-axis sliding seat 11 follows the conveyor belt for follow-up. At the same time, the Z-axis lifting mechanism lowers the clamping mechanism, and the clamping mechanism remains in a clamping state. Since the front product is lower than the rear product at this time, the front product is first pressed against the corresponding product in the next unit product. Since the product targeted by the present invention is bottled liquid, the bottom of the bottle is concave. The front product clamped by the clamping mechanism forms a new limit device and is sleeved on the bottle cap of the lower product. Then, the moving speed of the X-axis sliding seat 11 is reduced, so that the front product currently on the conveyor belt is slightly decelerated and caught up by the rear product. After the gap between the two is eliminated, the X-axis sliding seat 11 resumes the following state and presses down the Z-axis lifting mechanism again. After the rear products of the upper and lower packages are in contact, the clamping claws at the front and rear ends are released at the same time to complete this stacking operation.

[0043] The clamping wedge 8 and the pushing wedge 7 can provide downward pressure space for the lowering of the rear product when the Z-axis lifting mechanism is pressed down for the second time, avoiding the front product in the clamped state from obstructing this process, and facilitating the simultaneous release of the claws, so that the stacked products can enter the subsequent secondary film packaging link in a neat and tight stacking state.

Claims

1. An automatic reciprocating follower type stacking machine, comprising a frame (1) and a Z-axis lifting mechanism arranged on the frame (1), wherein the Z-axis lifting mechanism is connected to a clamping mechanism, a conveyor belt is arranged below the clamping mechanism, and products to be stacked are transported to the bottom of the clamping mechanism by means of the conveyor belt, and the products are stacked on the conveyor belt by means of the clamping mechanism, characterized in that: The clamping mechanism comprises a profile base (2), a telescopic cylinder (3), and clamping assemblies symmetrically arranged on both sides of the profile base (2); the profile base (2) is connected to the Z-axis lifting mechanism; two groups of clamping assemblies are arranged at intervals in the front-rear direction of the profile base (2); each group of clamping assemblies has a degree of clamping freedom by means of the telescopic cylinder (3); The frame (1) is further provided with an X-axis sliding seat (11), and the Z-axis lifting mechanism includes a Z-axis slide rail (13) provided on the X-axis sliding seat (11) and a Z-axis lifting slide bar (14) slidably engaged with the Z-axis slide rail (13); The clamping assembly includes a push arm (4) and a clamping arm (5), the cross section of the push arm (4) is an L-shaped structure, the horizontal end of the push arm (4) is fixedly connected to the telescopic end of the telescopic cylinder (3), the vertical end of the push arm (4) is arranged on the outside of the clamping arm (5), the clamping arm (5) is hoisted below the profile base (2) by means of a spring (6), and the clamping arm (5) has the clamping freedom to move closer to the center of the profile base (2) by means of the abutment and pressing of the push arm (4); The control method of the bag stacking machine during use is that the conveyor belt below the clamping mechanism moves continuously and uniformly, while the upper conveyor belt moves intermittently. After conveying two groups of products, the machine stops and waits for the clamping mechanism to operate. With the help of the intermittent movement of the upper conveyor belt, the two groups of products are arranged as a unit on the conveyor belt below the clamping mechanism, and are arranged in a straight line at intervals. By means of the Z-axis lifting slide bar (14) to lower the clamping mechanism, the front product in this product unit is stopped, and the rear product is squeezed onto the front product along with the conveyor belt, so that there is no gap between the two groups of products. At this time, the downwardly extending clamping arm (5) abuts against the belt surface of the conveyor belt, and the spring (6) is in a compressed state, thereby reducing the distance between the clamping arm (5) and the profile base (2). Then, the telescopic cylinder (3) of the clamping mechanism corresponding to the rear product contracts, so that the rear product is clamped first, and then the Z-axis lifting slide bar (14) moves up until the bottom surface of the rear product is higher than the bottom surface of the front product. At this time, the front product is still on the conveyor belt surface and slips and idles with the conveyor belt surface. Then, the telescopic cylinder (3) corresponding to the front product contracts to grab the front product. At this time, the bottom surface of the front product is slightly lower than the bottom surface of the rear product. Subsequently, the Z-axis lifting slide (14) is used to continue to lift the product to a safe height, that is, a height that does not interfere with other products on the conveyor belt. Subsequently, the X-axis sliding seat (11) carries the Z-axis lifting mechanism and the product to the incoming direction of the conveyor belt. When the next unit product enters the conveyor belt, the X-axis sliding seat (11) follows the conveyor belt and moves. At the same time, the Z-axis lifting mechanism lowers the clamping mechanism, and the clamping mechanism remains in a clamping state. Since the front product is lower than the rear product at this time, the front product is first pressed against the corresponding product in the next unit product. Since the product is a bottled liquid, the bottom of the bottle is concave. The front product clamped by the clamping mechanism forms a new limit device and is sleeved on the bottle cap of the lower product. Subsequently, the moving speed of the X-axis sliding seat (11) is reduced, so that the front product currently on the conveyor belt is slightly decelerated and caught up by the rear product. After the gap between the two is eliminated, the X-axis sliding seat (11) resumes the following state and presses down the Z-axis lifting mechanism for the second time. After the rear products of the upper and lower packages are in contact, the clamping claws at the front and rear ends are released at the same time to complete this stacking operation.

2. The automatic reciprocating follower bag stacking machine according to claim 1, characterized in that: A pushing wedge (7) with its tip facing upward is provided on the inner side of the vertical end of the pushing arm (4), and a clamping wedge (8) with its tip facing downward is provided on the outer side of the clamping arm (5). The pushing wedge (7) and the clamping wedge (8) abut against each other and form a friction fit.

3. The automatic reciprocating follower bag stacking machine according to claim 1, characterized in that: The vertical end of the pushing arm (4) is provided with a limit groove (9) in the vertical direction, and the outer side of the clamping arm (5) is provided with a limit bolt (10), and the limit bolt (10) is inserted into the limit groove (9) and has the freedom to slide along the length direction of the limit groove (9).

4. The automatic reciprocating follower bag stacking machine according to claim 1, characterized in that: The X-axis sliding seat (11) is slidably arranged on the X-axis slide rail (12), and the frame (1) is also provided with a transmission belt arranged along the X-axis slide rail (12). The X-axis sliding seat (11) is fixedly connected to the transmission belt. The transmission belt drives the X-axis sliding seat (11) to move back and forth along the X-axis slide rail (12) with the help of a driving motor. The profile base (2) is fixedly connected to the Z-axis lifting slide bar (14). The X-axis sliding seat (11) is provided with a Z-axis gear driven by a motor. The Z-axis lifting slide bar (14) is provided with teeth meshing with the Z-axis gear. The Z-axis lifting slide bar has the freedom to slide up and down along the Z-axis slide rail (13) with the help of the rotation of the Z-axis gear.

5. The automatic reciprocating follower bag stacking machine according to claim 1, characterized in that: The lower end of the clamping arm (5) is configured as a flanged bent structure extending outward, and the clamping arms (5) on both sides are formed into a trumpet-shaped structure.

6. The automatic reciprocating follower bag stacking machine according to claim 1, characterized in that: The vertical end of the pushing arm (4) is also provided with a reinforcing edge (15) with an L-shaped cross section, and the lower end of the clamping arm (5) is provided with an upwardly turned limit folding edge (16). The reinforcing edge (15) and the limit folding edge (16) have the freedom of movement of abutting and limiting as the spring (6) of the clamping arm (5) expands and contracts.

7. The automatic reciprocating follower bag stacking machine according to claim 1, characterized in that: A blocking rod (17) is also provided on the profile base (2), and the blocking rod (17) hangs down and extends between the clamping arms (5) on both sides of the profile base (2).

Images