Self-weight clamping type lifting appliance
By designing a self-weight clamping spreader, using the structure of the lifting ring and limiting fixture, the automatic conversion and reversal of the ejection guide plate is realized, solving the problem of excessive labor intensity caused by manual adjustment in the prior art, and significantly reducing labor strength.
Patent Information
- Application Number
- CN202421209394.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In the prior art, the steering adjustment during the ejection guide processing requires manual operation, which is too labor-intensive, resulting in a cumbersome handling process.
A self-weight clamping spreader is designed, including a lifting ring and a limiting fixture. The limiting fixture is composed of an upper half ring and a lower half ring. Through the rotational connection between the lifting ring and the upper half ring, it uses its own gravity and the limit of the blocking component. It can realize automatic conversion and commutation of the ejection guide.
With this self-weight clamping spreader, the horizontal to vertical state of the ejection guide plate and the reversal of the panel can be automatically completed without manpower handling, thereby greatly reducing labor intensity.
Smart Images
Figure CN222454256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of slings, in particular to a deadweight clamping type sling. Background Art
[0002] Injection molding machine is the main equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. As an important component of the injection molding machine, the ejector guide plate has a special processing method and is hoisted and installed using a horizontal-to-vertical conversion method.
[0003] The lifting method for horizontal-to-vertical conversion is as follows: the ejector guide of the injection molding machine is placed flat in the transfer box after rough processing. During processing, the ejector guide needs to be lifted to convert the ejector guide from a horizontal state to a vertical state, and then the vertical ejector guide is lifted onto the square box so that the back of the ejector guide fits against the side wall of the square box, and then fixed on the square box to perform deburring on the front of the ejector guide away from the square box. When the front processing is completed, the ejector guide needs to be removed from the square box, and then the ejector guide is rotated vertically 180° to make the front fit against the square box and the back away from the square box. After the ejector guide is clamped on the square box, the back is processed.
[0004] The above-mentioned ejector guide plate processing process requires the ejector guide plate to be flipped from a horizontal state to a vertical state, and after the front processing is completed, it needs to be vertically rotated 180° to flip the ejector guide plate. The clamping process of this plate part is relatively cumbersome, so the traditional method mostly adopts manual transportation, and the ejector guide plate is moved out of the transfer box and turned vertically, and then hoisted to the square box by a lifting device. After the front processing of the ejector guide plate is completed, the operator is required to move the ejector guide plate to the ground for manual reversing and then install it on the square box for back processing, which is too labor-intensive. Utility Model Content
[0005] The utility model provides a deadweight clamping type sling to solve the problem that the steering adjustment in the processing of the ejection guide plate in the prior art is manually performed and the labor intensity is too high.
[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:
[0007] A deadweight clamping sling comprises a lifting ring and a limit clamp which rotates horizontally at the lower end of the lifting ring, the limit clamp comprising an upper half ring and a lower half ring which are rotatably connected to each other and form a closed loop, the lifting ring is rotatably connected at the middle of the convex part of the upper half ring, and blocking components are rotatably arranged at both ends of the lower half ring, which are located on both sides of the ejection guide plate when the ejection guide plate abuts against the concave part of the lower half ring and flips downward.
[0008] By adopting the above scheme, when hoisting the ejector guide plate placed horizontally, the lower half ring is placed horizontally and the ejector guide plate is located inside the lower half ring, the ejector guide plate abuts against the concave part of the lower half ring, and the blocking component is rotated so that it is located on both sides of the ejector guide plate; the upper half ring is in a vertical state to facilitate the lifting device to lift through the lifting ring. After the lifting device lifts, the lower half ring and the ejector guide plate will flip downward under the action of their own gravity, and due to the existence of the blocking component, the ejector guide plate will not fall from the lower half ring. Therefore, after lifting through the lifting ring, the ejector guide plate can be converted from a horizontal state to a vertical state. The ejector guide plate is hoisted to the square box. Since the limit clamp is composed of the upper half ring and the lower half ring, it will not hinder the ejector guide plate from being fixed on the square box. When the surface needs to be changed, it is only necessary to release the limit of the ejector guide plate by the square box. Since the lifting ring and the upper half ring are rotatably connected, a small force is applied to push the upper half ring to rotate horizontally 180° to complete the reversal of the ejector guide plate. During the whole process, no manpower is required to carry the ejector guide plate, which greatly reduces the labor intensity.
[0009] Preferably, the blocking component includes two parallel baffles and a rotating shaft that rotates through the lower half ring and is fixed to the two baffles at both ends. A limiting structure is provided between the baffle and the lower half ring to limit the baffle from excessively flipping down under the action of gravity and thus detaching from the ejection guide plate.
[0010] With the above scheme, the rotating shaft and the lower half ring are rotatably connected and the two ends of the rotating shaft are respectively fixed to a baffle, so that the two baffles rotate synchronously on the lower half ring. After the two baffles flip downward, they are located on both sides of the ejection guide plate to limit the ejection guide plate and prevent the ejection guide plate from tipping over and falling from the lower half ring; after the two baffles flip upward, they are separated from the ejection guide plate to release the limit on the ejection guide plate, and the ejection guide plate can be removed from the lower half ring. Since there will be a slight error in the thickness of the ejection guide plate during production, in order to facilitate the smooth rotation of the baffle plate, the spacing between the two baffle plates is generally slightly larger than the thickness of the ejection guide plate. Therefore, when the ejection guide plate and the lower half ring flip downward, the baffle plate will also flip downward under the action of its own gravity. In order to prevent the baffle plate from flipping downward excessively and thus detaching from the ejection guide plate, a limiting structure is set between the baffle plate and the lower half ring to ensure that during the lifting process, the baffle plate is always located on both sides of the ejection guide plate to limit the ejection guide plate.
[0011] Preferably, the limiting structure includes limiting rods arranged on the inward side of the lower half ring on the baffle plate and fixed to the two baffles at both ends. When the two baffles are flipped down to the maximum angle, the limiting rods abut against the lower half ring and the baffles are located on both sides of the ejection guide plate.
[0012] With the above solution, the baffle plate flips downward under its own gravity until the limit rod abuts against the lower half ring, limiting the baffle plate from further flipping downward. This is the maximum downward flipping angle of the two baffle plates. At this maximum downward flipping angle, the two baffle plates are still located on both sides of the ejection guide plate to play a limiting role.
[0013] Preferably, a support block for supporting the ejector guide plate during its hoisting process is provided in the recess of the lower half ring, and the support block has a support plane that fits with the plane on the ejector guide plate to reduce the probability of the ejector guide plate slipping.
[0014] With the above solution, the ejector guide plate has a certain thickness, and the lower half ring and the upper half ring are generally smaller in width than the thickness of the ejector guide plate in order to ensure that the ejector guide plate can be installed on the square box without being removed from the lower half ring. The two baffles are only located on both sides of the ejector guide plate and do not play a clamping role, so that the ejector guide plate is at risk of sliding off the lower half ring. By setting a support block and using the support plane to fit the side wall plane of the ejector guide plate, the probability of the ejector guide plate sliding off is reduced. In addition, the support block can make a gap between the ejector guide plate and the lower half ring, so that the clamping parts on the square box can be extended to limit the ejector guide plate on the square box.
[0015] Preferably, the upper half ring and the lower half ring are "U-shaped".
[0016] By adopting the above solution, the closed loop formed by splicing the upper and lower half rings of the "U-shape" is more compatible with the shape of the ejection guide plate.
[0017] Preferably, at least one group of blocking components is disposed on each side of the lower half ring.
[0018] By adopting the above scheme, one group can be set to limit the position, and setting multiple groups can further increase the limiting capacity.
[0019] The utility model has significant technical effects due to the adoption of the above technical scheme: the lower half ring is placed horizontally and the ejection guide plate is located inside the lower half ring, the ejection guide plate abuts against the supporting plane, and the two baffles are rotated to be located on both sides of the ejection guide plate; the upper half ring is in a vertical state to facilitate the lifting device to lift through the lifting ring. After the lifting device lifts, the lower half ring and the ejection guide plate flip downward, and the baffle plate will also flip downward, and under the action of the limit rod, they are always located on both sides of the ejection guide plate for limiting, so that the ejection guide plate will not fall from the lower half ring. Therefore, after lifting through the lifting ring, the ejection guide plate can be converted from a horizontal state to a vertical state. Since the lifting ring and the upper half ring are rotatably connected, the ejection guide plate can be changed by applying a small force to push the upper half ring to rotate horizontally 180°. During the whole process, no manpower is required to carry the ejection guide plate, which greatly reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic diagram of a deadweight clamping type sling in an embodiment;
[0021] Figure 2 This is a disassembled diagram of a deadweight clamping type sling in the embodiment;
[0022] Figure 3 yes Figure 2A in the enlarged view;
[0023] Figure 4 and Figure 5 is a schematic diagram of a deadweight clamping type lifting device in an embodiment when waiting for lifting and ejecting a guide plate;
[0024] Figure 6 This is a schematic diagram of a self-weight clamping type lifting device in an embodiment when lifting and ejecting a guide plate;
[0025] Figure 7 yes Figure 6 The enlarged view of point B in the figure;
[0026] Figure 8 It is a schematic diagram of a deadweight clamping type lifting device in an embodiment when lifting and ejecting a guide plate.
[0027] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. ejector guide plate; 2. lifting ring; 3. upper half ring; 4. lower half ring; 5. baffle; 6. rotating shaft; 7. limiting rod; 8. support block; 801, support plane. DETAILED DESCRIPTION
[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] Example
[0030] A deadweight clamping sling, refer to Figures 1 to 8 , including a lifting ring 2 and a limiting clamp horizontally rotating at the lower end of the lifting ring 2. The limiting clamp includes an upper half ring 3 and a lower half ring 4 that are rotatably connected to each other and form a closed loop, and the lifting ring 2 is rotatably connected to the middle of the convex part of the upper half ring 3. In this embodiment, the upper half ring 3 and the lower half ring 4 are "U-shaped", which is more compatible with the shape of the ejection guide plate 1.
[0031] Blocking components are rotatably provided at both ends of the lower half ring 4. The lower half ring 4 is placed horizontally so that the ejection guide plate 1 is located inside the lower half ring 4. The ejection guide plate 1 abuts against the recessed portion of the lower half ring 4. The rotating blocking components are located on both sides of the ejection guide plate 1. After the limiting clamp is lifted, the lower half ring 4 and the ejection guide plate 1 will flip downward under the action of their own gravity. The blocking components are located on both sides of the ejection guide plate 1 to limit the ejection guide plate 1 from tipping out of the limiting clamp.
[0032] The blocking component includes two parallel baffles 5 facing each other, a rotating shaft 6 is arranged between the two baffles 5, the rotating shaft 6 passes through the lower half ring 4 and rotates with the lower half ring 4, and the two ends of the rotating shaft 6 are respectively fixedly connected to the opposite sides of the two baffles 5, and the two baffles 5 rotate synchronously on the lower half ring 4. After the two baffles 5 are flipped downward, they are located on both sides of the ejection guide plate 1, or after flipping upward, they are separated from the ejection guide plate 1.
[0033] Since there may be slight errors in the thickness of the ejector guide plate 1 during production, in order to facilitate the smooth rotation of the baffle plate 5, the distance between the two baffle plates 5 is generally slightly larger than the thickness of the ejector guide plate 1. Therefore, when the ejector guide plate 1 and the lower half ring 4 are flipped downward, the baffle plate 5 will also flip downward under the action of its own gravity. In order to prevent the baffle plate 5 from flipping downward excessively and thus separating from the ejector guide plate 1, a limiting structure is provided between the baffle plate 5 and the lower half ring 4 to ensure that during the lifting process, the baffle plate 5 is always located on both sides of the ejector guide plate 1 to play a limiting role.
[0034] The limiting structure includes limiting rods 7 arranged on the baffle plate 5 on the inner side of the lower half ring 4, and fixed to the two baffle plates 5 at both ends. The baffle plate 5 turns downward under its own gravity until the limiting rods 7 abut against the lower half ring 4, limiting the baffle plate 5 from further turning downward, which is the maximum turning angle of the two baffle plates 5. At the maximum turning angle, the two baffle plates 5 are still located on both sides of the ejection guide plate 1 to play a limiting role.
[0035] The concave part of the lower half ring 4 is provided with a support block 8 for supporting the ejector guide 1 during the lifting process of the ejector guide 1. The support block 8 has a support plane 801 that fits with the plane on the ejector guide 1 to reduce the probability of the ejector guide 1 sliding off. The ejector guide 1 has a certain thickness, and the lower half ring 4 and the upper half ring 3 are generally smaller than the thickness of the ejector guide 1 in order to ensure that the ejector guide 1 can be installed on the square box without being removed from the lower half ring 4. The two baffles 5 are only located on both sides of the ejector guide 1 and do not play a clamping role, so that the ejector guide 1 is at risk of sliding off the lower half ring 4. By providing the support block 8, the support plane 801 is used to fit with the side wall plane of the ejector guide 1 to reduce the probability of the ejector guide 1 sliding off. In addition, the support block 8 can make a distance between the ejector guide 1 and the lower half ring 4, so that the clamping parts on the square box can be extended to limit the ejector guide 1 on the square box.
[0036] At least one group of blocking components is provided on both sides of the lower half ring 4. Position limiting can be achieved by providing only one group, and the position limiting capability can be further increased by providing multiple groups.
[0037] The lower half ring 4 is placed horizontally so that the ejection guide plate 1 is located inside the lower half ring 4. The ejection guide plate 1 is in contact with the support plane 801, and the two baffles 5 are rotated to be located on both sides of the ejection guide plate 1; the upper half ring 3 is in a vertical state so that the lifting device can lift it through the lifting ring 2. After the lifting device lifts, the lower half ring 4 and the ejection guide plate 1 flip downward under the action of their own gravity, and the baffle 5 will also flip downward, and under the action of the limit rod 7, it is always located on both sides of the ejection guide plate 1 for limiting, so that the ejection guide plate 1 will not fall from the lower half ring 4. Therefore, after lifting through the lifting ring 2, the ejection guide plate 1 can be converted from a horizontal state to a vertical state. Since the lifting ring 2 and the upper half ring 3 are rotatably connected, the ejection guide plate 1 can be changed by applying a small force to push the upper half ring 3 to rotate horizontally 180°. During the whole process, no manpower is required to carry the ejection guide plate 1, which greatly reduces the labor intensity.
[0038] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A deadweight clamping sling, characterized in that: The invention comprises a lifting ring (2) and a limiting clamp which rotates horizontally at the lower end of the lifting ring (2), wherein the limiting clamp comprises an upper half ring (3) and a lower half ring (4) which are connected to each other and form a closed loop, the lifting ring (2) is connected to the middle of the convex part of the upper half ring (3) and blocking parts are provided at both ends of the lower half ring (4) so as to be located on both sides of the ejection guide plate (1) when the ejection guide plate (1) abuts against the concave part of the lower half ring (4) and turns downward.
2. A deadweight clamping sling according to claim 1, characterized in that: The blocking component comprises two parallel baffles (5) facing each other and a rotating shaft (6) which rotates through the lower half ring (4) and is fixed to the two baffles (5) at both ends. A limiting structure is provided between the baffles (5) and the lower half ring (4) to limit the baffles (5) from excessively turning down under the action of gravity and thus detaching from the ejection guide plate (1).
3. A deadweight clamping sling according to claim 2, characterized in that: The limiting structure comprises limiting rods (7) arranged on the baffle plate (5) at both ends on the inner side of the lower half ring (4) and fixed to the two baffle plates (5); when the two baffle plates (5) are tilted down to a maximum angle, the limiting rods (7) abut against the lower half ring (4) and the baffle plates (5) are located on both sides of the ejection guide plate (1).
4. A deadweight clamping sling according to claim 1, characterized in that: A support block (8) is provided in the recess of the lower half ring (4) for supporting the ejector guide plate (1) during the lifting process of the ejector guide plate (1). The support block (8) has a support plane (801) that fits with the plane on the ejector guide plate (1) and is used to reduce the probability of the ejector guide plate (1) sliding off.
5. The deadweight clamping type sling according to claim 1, characterized in that: The upper half ring (3) and the lower half ring (4) are in a "U-shape".
6. A deadweight clamping type sling according to claim 1, characterized in that: At least one group of blocking components is arranged on each side of the lower half ring (4).