Tray shearing mechanism

Abstract

The utility model discloses a tray material shearing mechanism which comprises a material shearing roller way, a bearing frame and a material shearing assembly. The material shearing roller way is used for bearing and transporting the tray; the bearing frame is arranged above the shearing roller way; the material shearing assembly is arranged on the bearing frame and can horizontally move and vertically move along the bearing frame so as to shear a water gap in the surface of the tray. The material shearing assembly comprises a connecting support, a pair of gate shears and an elastic piece. One end of the connecting bracket is arranged on the bearing frame in a sliding manner and can move up and down relative to the bearing frame; the gate shear is connected with the other end of the connecting bracket and can move up and down; the elastic piece is vertically arranged between the connecting support and the water gap shear, and the water gap shear always tends to move downwards under the working state due to the elastic force of the elastic piece, so that the water gap shear is attached to the surface of the tray. The tray shearing mechanism can ensure the uniformity of water gap shearing and improve the flatness of the surface of the tray.

Description

Technical Field

[0001] This utility model belongs to the field of automated production technology, specifically relating to a pallet shearing mechanism. Background Technology

[0002] The pallet manufacturing process includes multiple steps such as injection molding, material handling, trimming pallet gates, and pallet stacking. Due to the injection molding process, pallets will have numerous gates. Therefore, after injection molding, the gates on the pallet surface need to be trimmed to make the pallet surface smoother.

[0003] Existing pallet shearing mechanisms use various sensors to control the distance between the sprue shear or shear head and the pallet surface to ensure consistent shearing at each sprue on the pallet. However, due to the complex structure of existing pallet shearing mechanisms, inconsistent sprue shearing lengths inevitably occur, resulting in uneven pallet surfaces and affecting pallet usability. Furthermore, due to limitations in the precision of operation, existing shearing mechanisms can leave sprue residue on the pallet surface, also affecting its flatness.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a pallet shearing mechanism that can ensure the consistency of sprue trimming and improve the flatness of the pallet surface.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides the following technical solution: a pallet shearing mechanism, comprising a shearing roller conveyor, a support frame, and a shearing assembly. The shearing roller conveyor is used to support and transport pallets; the support frame is disposed above the shearing roller conveyor; the shearing assembly is disposed on the support frame and can move horizontally and vertically along the support frame to trim the sprue marks on the surface of the pallet. The shearing assembly includes a connecting bracket, a sprue cutter, and an elastic element. One end of the connecting bracket is slidably disposed on the support frame and can move vertically relative to the support frame; the sprue cutter is connected to the other end of the connecting bracket and can move vertically; the elastic element is vertically disposed between the connecting bracket and the sprue cutter, and the elastic force of the elastic element causes the sprue cutter to always have a downward tendency in the working state, so that the sprue cutter fits against the surface of the pallet.

[0007] In one or more embodiments of this utility model, the other end of the connecting bracket is provided with two vertically downward extending auxiliary plates, and the sprue shear is slidably disposed between the two auxiliary plates, moving up and down.

[0008] In one or more embodiments of this utility model, vertically extending guide rails are provided on both sides of the sprue cutter; sliders are provided on the side of the two auxiliary plates near the sprue cutter, and the sliders are slidably mounted on the guide rails.

[0009] In one or more embodiments of this utility model, the sprue cutter includes a main body and two cutting blades. The main body is connected to the other end of the connecting bracket and can move up and down along the axial direction of the connecting bracket; the two cutting blades are coaxially rotatably mounted on the main body to trim the sprue on the tray surface by moving closer to or further away from each other.

[0010] In one or more embodiments of this utility model, the support frame includes a first support, a second support, a first drive motor, and a second drive motor. The first support is disposed on one side of the shearing roller conveyor and extends along the conveying direction of the shearing roller conveyor; the second support is slidably disposed on the first support and can move along the extending direction of the first support, the second support extending along the width direction of the shearing roller conveyor and located above the shearing roller conveyor; the shearing assembly is disposed on the second support and can move along the extending direction of the second support; the first drive motor is connected to the second support and is used to drive the second support to move along the first support; the second drive motor is connected to the shearing assembly and is used to drive the shearing assembly to move along the second support.

[0011] In one or more embodiments of this utility model, the pallet shearing mechanism further includes a sprue recovery assembly for recovering sprues cut from the pallet surface; the sprue recovery assembly includes an adsorption head and a recovery pipe. The adsorption head is disposed on one side of the connecting bracket and above the sprue shear to suck up the sprues cut by the sprue shear; the recovery pipe is connected to the adsorption head via a flexible hose and is disposed on one side of the shearing roller conveyor.

[0012] In one or more embodiments of this utility model, a blocking bar is provided above the end of the shearing roller conveyor, and the distance between the blocking bar and the upper surface of the shearing roller conveyor matches the height of the tray after trimming.

[0013] In one or more embodiments of this utility model, through-beam sensors are provided on both sides of the shearing roller conveyor to sense the pallets blocked by the barrier bars.

[0014] In one or more embodiments of this utility model, the pallet cutting mechanism further includes a limiting component; the limiting component includes a limiting plate and two clamping plates. The limiting plate is vertically and vertically disposed on the cutting roller conveyor to prevent the pallet from moving; the two clamping plates are disposed on both sides of the cutting roller conveyor and can move closer or further apart from each other along the width direction of the cutting roller conveyor to clamp or release the pallet.

[0015] In one or more embodiments of this utility model, laser marking devices are provided on both sides of the shearing roller conveyor to print information on the tray.

[0016] Compared to existing technologies, the pallet shearing mechanism of this invention uses a vertically movable connecting bracket to adjust the height of the shearing assembly, ensuring the sprue shear fits snugly against the pallet surface and guaranteeing the neatness and consistency of sprue trimming on each pallet. An elastic element is added to the sprue shear, providing cushioning when it contacts the pallet surface, and the compression of the elastic element ensures the sprue shear always has a downward tendency to move, thus maintaining a closer fit to the pallet surface. The sprue recovery assembly reduces material waste and lowers production costs. Furthermore, the blocking bar promptly prevents pallets with uneven or missed sprue trimming, improving the yield rate of pallet production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first perspective view of the pallet shearing mechanism in one embodiment of the present invention;

[0019] Figure 2 This is a second perspective view of the pallet shearing mechanism in one embodiment of the present invention;

[0020] Figure 3 This is a perspective view of the shearing component in one embodiment of the present invention;

[0021] Figure 4 This is a perspective view of the sprue shear in one embodiment of the present invention.

[0022] Explanation of key figure labels:

[0023] 1-Shearing roller conveyor, 2-Bearing frame, 21-First support, 22-Second support, 23-First drive motor, 24-Second drive motor, 3-Shearing assembly, 31-Connecting support, 311-Auxiliary plate, 312-Guide rail, 313-Slider, 32-Sprue shear, 321-Main body, 322-Shear blade, 33-Elastic element, 4-Sprue recovery assembly, 41-Adsorption head, 42-Recovery pipe, 5-Blocking bar, 6-Through-beam sensor, 7-Limiting assembly, 71-Limiting plate, 72-Clamping plate, 8-Laser marking device. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0025] like Figure 1-4 As shown, a pallet cutting mechanism according to one embodiment of the present invention includes a cutting roller conveyor 1, a support frame 2, and a cutting assembly 3. The cutting roller conveyor 1 is used to carry and transport pallets. The support frame 2 is disposed above the cutting roller conveyor 1. The cutting assembly 3 is disposed on the support frame 2 and can move horizontally and vertically along the support frame 2 to trim the sprue marks on the surface of the pallet. The cutting assembly 3 includes a connecting bracket 31, a sprue cutter 32, and an elastic element 33. One end of the connecting bracket 31 is slidably disposed on the support frame 2 and can move vertically relative to the support frame 2. The sprue cutter 32 is connected to the other end of the connecting bracket 31 and can move vertically. The elastic element 33 is vertically disposed between the connecting bracket 31 and the sprue cutter 32. The elastic force of the elastic element 33 causes the sprue cutter 32 to always have a downward tendency in the working state, so that the sprue cutter 32 fits against the surface of the pallet.

[0026] The working principle of the pallet shearing mechanism is as follows: The pallet is removed from the injection molding machine and conveyed onto the shearing roller conveyor 1, moving along it to below the shearing assembly 3. Each pallet has multiple sprue marks to be trimmed. Next, the shearing assembly 3 moves along the support frame 2 to above the sprue marks to be trimmed. Then, the connecting bracket 31 moves downward relative to the support frame 2, causing the sprue cutter 32 to abut against the surface near the sprue marks on the pallet. The elastic element 33 is compressed, ensuring a tight fit between the sprue cutter 32 and the pallet surface without gaps. The sprue cutter 32 then cuts off the excess sprue marks, completing one trimming operation. Then, the connecting bracket 31 moves upward relative to the support frame 2, causing the sprue cutter 32 to disengage from the pallet surface. The shearing assembly 3 then moves back along the support frame 2 to the next sprue mark to be trimmed on the pallet, repeating the trimming operation. Finally, all sprue marks on the pallet surface are trimmed.

[0027] In the above embodiments, the pallet cutting mechanism of this utility model enables the sprue cutter 32 to fit against the pallet surface via a vertically movable connecting bracket 31. Furthermore, an elastic element 33 is added to the sprue cutter 32. This provides cushioning when the sprue cutter 32 contacts the pallet surface, and when compressed, the elastic element 33 ensures that the sprue cutter 32 always has a downward tendency, thus allowing for a closer fit against the pallet surface.

[0028] In one implementation, such as Figure 1 and Figure 2 As shown, the support frame 2 includes a first support 21, a second support 22, a first drive motor 23, and a second drive motor 24. The first support 21 is disposed on one side of the shearing roller conveyor 1 and extends along the conveying direction of the shearing roller conveyor 1. The second support 22 is slidably disposed on the first support 21 and can move along the extending direction of the first support 21. The second support 22 extends along the width direction of the shearing roller conveyor 1 and is located above the shearing roller conveyor 1. The shearing assembly 3 is disposed on the second support 22 and can move along the extending direction of the second support 22. With this configuration, the movement of the second support 22 along the first support 21 enables the movement of the shearing assembly 3 in the conveying direction of the shearing roller conveyor 1. The movement of the shearing assembly 3 along the second support 22 enables movement in the width direction of the shearing roller conveyor 1. The second support 22 and the shearing assembly 3 move simultaneously, so that the shearing assembly 3 can move to any position on the pallet surface.

[0029] The first drive motor 23 is connected to the second bracket 22 and is used to drive the second bracket 22 to move along the first bracket 21. The second drive motor 24 is connected to the shearing assembly 3 and is used to drive the shearing assembly 3 to move along the second bracket 22. It is understood that the connecting bracket 31 is also equipped with a drive motor to realize the up and down movement relative to the support frame 2, which will not be described in detail here.

[0030] In one embodiment, the pallet shearing mechanism may include multiple shearing components 3 to improve sprue shearing efficiency. For example, two shearing components 3 may be mounted on a second support 22. It is understood that multiple second supports 22 may also be provided to assemble multiple shearing components 3. Other similar arrangements can achieve the same technical effect, which will not be elaborated here.

[0031] In one implementation, such as Figure 3 As shown, two vertically extending auxiliary plates 311 are provided at the other end of the connecting bracket 31. The sprue cutter 32 is slidably disposed between the two auxiliary plates 311 to ensure that the sprue cutter 32 can move up and down without deviating. Preferably, vertically extending guide rails 312 are provided on both sides of the sprue cutter 32; a slider 313 is provided on the side of each auxiliary plate 311 near the sprue cutter 32, and the slider 313 is slidably disposed on the guide rails 312. Through the vertically extending guide rails 312 and the cooperation of the sliders 313, the sprue cutter 32 can always move in the vertical direction, and the bottom of the sprue cutter 32 can fit in contact with the surface of the tray, so that the bottom of the sprue cutter 32 is not tilted relative to the surface of the tray, thereby trimming the sprue more neatly.

[0032] like Figure 4As shown, the sprue cutter 32 includes a main body 321 and two blades 322. The main body 321 is connected to the other end of the connecting bracket 31 and can move up and down along the axial direction of the connecting bracket 31. For example, the top of the sprue cutter 31 can be inserted into the bottom of the connecting bracket 31 via two vertically extending shafts. When the sprue cutter 32 is pressed against the tray surface and subjected to an upward force, it can move upward to compress the elastic element 33, providing a buffering effect. At the same time, the compression of the elastic element 33 makes the sprue cutter 32 fit tightly against the tray surface. The two blades 322 are coaxially rotatably mounted on the main body 321 to move closer to or further away from each other to trim the sprue marks on the tray surface. The two blades 322 extend approximately horizontally, and in particular, the blades of the two blades 322 are on the same horizontal plane to ensure the smoothness of the sprue trimming.

[0033] In one implementation, such as Figure 2 As shown, the pallet shearing mechanism also includes a sprue recovery assembly 4 for recovering sprues cut from the pallet surface. Specifically, the sprue recovery assembly 4 includes an adsorption head 41 and a recovery pipe 42. The adsorption head 41 is located on one side of the connecting bracket 31 and above the sprue shear 32 to suck up the sprues cut by the sprue shear 32. For example, the adsorption head 41 uses vacuum adsorption to suck up the cut sprues. The recovery pipe 42 is connected to the adsorption head 41 via a flexible hose (not shown) and is located on one side of the shearing roller conveyor 1. The cut sprues are transported to a recovery point, such as a recovery cylinder or recovery frame, through the recovery pipe 42. This arrangement reduces the accumulation of sprues around the shearing mechanism and allows the recovered sprues to be reused, reducing production costs.

[0034] like Figure 1 As shown, the pallet shearing mechanism also includes a limiting component 7, which comprises a limiting plate 71 and two clamping plates 72. The limiting plate 71 is vertically and flexibly mounted on the shearing roller conveyor 1 to prevent pallet movement. When the pallet enters the shearing roller conveyor 1 and moves a certain distance, the limiting plate 71 rises to block it below the shearing component 3. After the pallet is trimmed, the limiting plate 71 descends, and the pallet can continue to move. The two clamping plates 72 are located on both sides of the shearing roller conveyor 1 and can move closer or further apart to clamp or release the pallet. When the pallet is blocked by the limiting plate 71, the two clamping plates 72 move closer together to clamp the pallet and cooperate with the limiting plate 71 to prevent the pallet from moving during the trimming process. The limiting plate 71 serves a positioning function, ensuring that the position of the pallet for sprue trimming on the shearing roller conveyor 1 is consistent. Simultaneously, the two clamping plates 72 prevent the pallet from moving during the trimming process, making it easier for the shearing component 3 to position the pallet, thereby improving the efficiency of sprue trimming and the flatness of the pallet surface after trimming.

[0035] Furthermore, a barrier bar 5 is provided above the end of the shearing roller conveyor 1. For example, the barrier bar 5 can be located downstream of the limiting plate 71. The distance between the barrier bar 5 and the upper surface of the shearing roller conveyor 1 matches the height of the trimmed pallet. Here, matching the distance between the barrier bar 5 and the upper surface of the shearing roller conveyor 1 matches the height of the pallet means that the distance between the barrier bar 5 and the upper surface of the shearing roller conveyor 1 is slightly greater than the height of the trimmed pallet. When uneven trimming or missed trimming occurs, the barrier bar 5 will interfere with the sprue, preventing the pallet from passing through the space below the barrier bar 5.

[0036] Through-beam sensors 6 can be installed on both sides of the shearing roller conveyor 1, working in conjunction with the blocking bars 5 to sense trays blocked by the blocking bars 5. When a tray with uneven or missed trimming interferes with the blocking bars 5, it will block the through-beam sensors 6 for an extended period, generating a relevant signal. When the external controller receives the relevant signal, it will issue a command to stop the trimming operation of subsequent trays and alert the operator to handle the situation.

[0037] In one embodiment, laser marking devices 8 are provided on both sides of the shearing roller conveyor 1 to print information on the pallet. For example, the laser marking devices 8 can be located below the shearing assembly 3, using the shearing time to mark the pallet, thereby reducing production time and improving pallet production efficiency.

[0038] In summary, the pallet cutting mechanism of this invention adjusts the height of the cutting assembly 3 via a vertically movable connecting bracket 31, ensuring that the sprue cutter 32 fits snugly against the pallet surface and guarantees the neatness and consistency of sprue trimming for each pallet. An elastic element 33 is added to the sprue cutter 32, providing cushioning when it contacts the pallet surface. Furthermore, compression of the elastic element 33 ensures the sprue cutter 32 always has a downward tendency, allowing for a closer fit to the pallet surface. The sprue recovery assembly 4 reduces material waste and lowers production costs. Additionally, the blocking bar 5 promptly prevents pallets with uneven or missed sprue trimming, improving the yield rate of pallet production.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pallet shearing mechanism, characterized in that, include: Shearing roller conveyors are used to carry and transport pallets; A support frame is positioned above the shearing roller conveyor; and A shearing assembly is mounted on the support frame and can move horizontally and vertically along the support frame to trim the sprue on the surface of the tray; The shearing assembly includes: A connecting bracket, one end of which is slidably mounted on the support frame and is capable of moving up and down relative to the support frame; A sprue cutter, connected to the other end of the connecting bracket and capable of vertical movement; and An elastic element is vertically disposed between the connecting bracket and the sprue cutter. The elastic force of the elastic element causes the sprue cutter to always have a downward tendency in the working state, so that the sprue cutter fits against the surface of the tray.

2. The pallet shearing mechanism according to claim 1, characterized in that, The other end of the connecting bracket is provided with two vertically downward extending auxiliary plates, and the sprue shear is slidably disposed between the two auxiliary plates, moving up and down.

3. The pallet shearing mechanism according to claim 2, characterized in that, The sprue shear is provided with vertically extending guide rails on both sides; each of the two auxiliary plates is provided with a slider on the side closest to the sprue shear, and the slider is slidably mounted on the guide rail.

4. The pallet shearing mechanism according to claim 1, characterized in that, The sprue shear includes: The main body, connected to the other end of the connecting bracket, is capable of moving up and down along the axial direction of the connecting bracket; and Two shear blades are coaxially rotatably mounted on the main body to trim the sprue on the surface of the tray by moving closer or further apart from each other.

5. The pallet shearing mechanism according to claim 1, characterized in that, The support frame includes: The first support is disposed on one side of the shearing roller conveyor and extends along the conveying direction of the shearing roller conveyor; The second support is slidably disposed on the first support and can move along the extending direction of the first support. The second support extends along the width direction of the shearing roller track and is located above the shearing roller track. The shearing assembly is disposed on the second support and can move along the extending direction of the second support. A first drive motor, connected to the second bracket, is used to drive the second bracket to move along the first bracket; and The second drive motor is connected to the shearing assembly and is used to drive the shearing assembly to move along the second support.

6. The pallet shearing mechanism according to claim 1, characterized in that, It also includes a sprue recovery assembly for recovering sprues trimmed from the surface of the tray; The sprue recovery assembly includes: An adsorption head, positioned on one side of the connecting bracket and above the sprue shear, is used to remove the sprue cut off by the sprue shear; and The recycling pipe is connected to the adsorption head via a hose and is located on one side of the shearing roller conveyor.

7. The pallet shearing mechanism according to claim 1, characterized in that, A barrier bar is provided above the end of the shearing roller conveyor, and the distance between the barrier bar and the upper surface of the shearing roller conveyor matches the height of the tray after trimming.

8. The pallet shearing mechanism according to claim 7, characterized in that, The shearing roller conveyor is equipped with through-beam sensors on both sides to sense the pallets blocked by the barrier bars.

9. The pallet shearing mechanism according to claim 1, characterized in that, It also includes a limiting component; the limiting component includes: A limiting plate, which can be raised and lowered on the shearing roller conveyor, is used to prevent the pallet from moving; and Two clamping plates are disposed on both sides of the shearing roller track and can move closer or further apart from each other along the width direction of the shearing roller track to clamp or release the tray.

10. The pallet shearing mechanism according to claim 1, characterized in that, Laser marking machines are installed on both sides of the shearing roller conveyor to print information on the tray.

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